| 1. |
- Ruilope, LM, et al.
(författare)
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Design and Baseline Characteristics of the Finerenone in Reducing Cardiovascular Mortality and Morbidity in Diabetic Kidney Disease Trial
- 2019
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Ingår i: American journal of nephrology. - : S. Karger AG. - 1421-9670 .- 0250-8095. ; 50:5, s. 345-356
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Tidskriftsartikel (refereegranskat)abstract
- <b><i>Background:</i></b> Among people with diabetes, those with kidney disease have exceptionally high rates of cardiovascular (CV) morbidity and mortality and progression of their underlying kidney disease. Finerenone is a novel, nonsteroidal, selective mineralocorticoid receptor antagonist that has shown to reduce albuminuria in type 2 diabetes (T2D) patients with chronic kidney disease (CKD) while revealing only a low risk of hyperkalemia. However, the effect of finerenone on CV and renal outcomes has not yet been investigated in long-term trials. <b><i>Patients and</i></b> <b><i>Methods:</i></b> The Finerenone in Reducing CV Mortality and Morbidity in Diabetic Kidney Disease (FIGARO-DKD) trial aims to assess the efficacy and safety of finerenone compared to placebo at reducing clinically important CV and renal outcomes in T2D patients with CKD. FIGARO-DKD is a randomized, double-blind, placebo-controlled, parallel-group, event-driven trial running in 47 countries with an expected duration of approximately 6 years. FIGARO-DKD randomized 7,437 patients with an estimated glomerular filtration rate ≥25 mL/min/1.73 m<sup>2</sup> and albuminuria (urinary albumin-to-creatinine ratio ≥30 to ≤5,000 mg/g). The study has at least 90% power to detect a 20% reduction in the risk of the primary outcome (overall two-sided significance level α = 0.05), the composite of time to first occurrence of CV death, nonfatal myocardial infarction, nonfatal stroke, or hospitalization for heart failure. <b><i>Conclusions:</i></b> FIGARO-DKD will determine whether an optimally treated cohort of T2D patients with CKD at high risk of CV and renal events will experience cardiorenal benefits with the addition of finerenone to their treatment regimen. Trial Registration: EudraCT number: 2015-000950-39; ClinicalTrials.gov identifier: NCT02545049.
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| 2. |
- van Haarlem, M. P., et al.
(författare)
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LOFAR : The LOw-Frequency ARray
- 2013
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 556, s. 1-53
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Tidskriftsartikel (refereegranskat)abstract
- LOFAR, the LOw-Frequency ARray, is a new-generation radio interferometer constructed in the north of the Netherlands and across europe. Utilizing a novel phased-array design, LOFAR covers the largely unexplored low-frequency range from 10–240 MHz and provides a number of unique observing capabilities. Spreading out from a core located near the village of Exloo in the northeast of the Netherlands, a total of 40 LOFAR stations are nearing completion. A further five stations have been deployed throughout Germany, and one station has been built in each of France, Sweden, and the UK. Digital beam-forming techniques make the LOFAR system agile and allow for rapid repointing of the telescope as well as the potential for multiple simultaneous observations. With its dense core array and long interferometric baselines, LOFAR achieves unparalleled sensitivity and angular resolution in the low-frequency radio regime. The LOFAR facilities are jointly operated by the International LOFAR Telescope (ILT) foundation, as an observatory open to the global astronomical community. LOFAR is one of the first radio observatories to feature automated processing pipelines to deliver fully calibrated science products to its user community. LOFAR’s new capabilities, techniques and modus operandi make it an important pathfinder for the Square Kilometre Array (SKA). We give an overview of the LOFAR instrument, its major hardware and software components, and the core science objectives that have driven its design. In addition, we present a selection of new results from the commissioning phase of this new radio observatory.
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| 3. |
- van Weeren, R. J., et al.
(författare)
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First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256
- 2012
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 543, s. Article Number: A43 -
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Tidskriftsartikel (refereegranskat)abstract
- Abell 2256 is one of the best known examples of a galaxy cluster hosting large-scale diffuse radio emission that is unrelated to individual galaxies. It contains both a giant radio halo and a relic, as well as a number of head-tail sources and smaller diffuse steep-spectrum radio sources. The origin of radio halos and relics is still being debated, but over the last years it has become clear that the presence of these radio sources is closely related to galaxy cluster merger events. Here we present the results from the first LOFAR low band antenna (LBA) observations of Abell 2256 between 18 and 67 MHz. To our knowledge, the image presented in this paper at 63 MHz is the deepest ever obtained at frequencies below 100 MHz in general. Both the radio halo and the giant relic are detected in the image at 63 MHz, and the diffuse radio emission remains visible at frequencies as low as 20 MHz. The observations confirm the presence of a previously claimed ultra-steep spectrum source to the west of the cluster center with a spectral index of -2.3 +/- 0.4 between 63 and 153 MHz. The steep spectrum suggests that this source is an old part of a head-tail radio source in the cluster. For the radio relic we find an integrated spectral index of -0.81 +/- 0.03, after removing the flux contribution from the other sources. This is relatively flat which could indicate that the efficiency of particle acceleration at the shock substantially changed in the last similar to 0.1 Gyr due to an increase of the shock Mach number. In an alternative scenario, particles are re-accelerated by some mechanism in the downstream region of the shock, resulting in the relatively flat integrated radio spectrum. In the radio halo region we find indications of low-frequency spectral steepening which may suggest that relativistic particles are accelerated in a rather inhomogeneous turbulent region.
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| 4. |
- Zhang, X., et al.
(författare)
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Human total, basal and activity energy expenditures are independent of ambient environmental temperature
- 2022
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Ingår i: iScience. - : Elsevier Inc.. - 2589-0042. ; 25:8
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Tidskriftsartikel (refereegranskat)abstract
- Lower ambient temperature (Ta) requires greater energy expenditure to sustain body temperature. However, effects of Ta on human energetics may be buffered by environmental modification and behavioral compensation. We used the IAEA DLW database for adults in the USA (n = 3213) to determine the effect of Ta (−10 to +30°C) on TEE, basal (BEE) and activity energy expenditure (AEE) and physical activity level (PAL). There were no significant relationships (p > 0.05) between maximum, minimum and average Ta and TEE, BEE, AEE and PAL. After adjustment for fat-free mass, fat mass and age, statistically significant (p < 0.01) relationships between TEE, BEE and Ta emerged in females but the effect sizes were not biologically meaningful. Temperatures inside buildings are regulated at 18–25°C independent of latitude. Hence, adults in the US modify their environments to keep TEE constant across a wide range of external ambient temperatures.
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| 5. |
- Kehoe, Laura, et al.
(författare)
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Make EU trade with Brazil sustainable
- 2019
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Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 364:6438, s. 341-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 6. |
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| 7. |
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| 8. |
- Woods, P. J., et al.
(författare)
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A review of adaptation options in fisheries management to support resilience and transition under socio-ecological change
- 2022
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Ingår i: ICES Journal of Marine Science. - : Oxford University Press (OUP). - 1054-3139 .- 1095-9289. ; 79:2, s. 463-479
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Forskningsöversikt (refereegranskat)abstract
- Social-ecological systems dependent on fisheries must be resilient or adapt to remain viable in the face of change. Here, we identified possible interventions (termed “adaptation options”) from published literature, aimed at supporting social or ecological resilience and/or aiding adaptation to changes induced by environmental or social stressors. Our searches centered on nations/regions across North America, Europe, and the South Pacific, encompassing fisheries literature with and without a climate change focus, to compare how, when, and by whom interventions are currently or potentially implemented. We expected that adaptation options within a climate change context would have a greater focus on enhancing social resilience due to a connection with climate change adaptation assessment methodology. Instead, we found a greater focus on ecological resilience, likely indicating a focus on management adaptation. This pattern, along with the more extensive use of social adaptation options responsively and outside the context of climate change, along with an importance in bottom-up influences in implementing them, suggests a general lack of centralized planning and organization with regards to adaptation of stakeholders. Determining how adaptation options are created, chosen, and implemented is a crucial step within or external to ecosystem-based management, especially if planned stakeholder adaption is the goal.
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| 9. |
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| 10. |
- Dornelles, Andre Z., et al.
(författare)
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Towards a bridging concept for undesirable resilience in social-ecological systems
- 2020
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Ingår i: Global Sustainability. - : Cambridge University Press (CUP). - 2059-4798. ; 3
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Tidskriftsartikel (refereegranskat)abstract
- Non-technical summary Resilience is a cross-disciplinary concept that is relevant for understanding the sustainability of the social and environmental conditions in which we live. Most research normatively focuses on building or strengthening resilience, despite growing recognition of the importance of breaking the resilience of, and thus transforming, unsustainable social-ecological systems. Undesirable resilience (cf. lock-ins, social-ecological traps), however, is not only less explored in the academic literature, but its understanding is also more fragmented across different disciplines. This disparity can inhibit collaboration among researchers exploring interdependent challenges in sustainability sciences. In this article, we propose that the term lock-in may contribute to a common understanding of undesirable resilience across scientific fields. Technical summary Resilience is an extendable concept that bridges the social and life sciences. Studies increasingly interpret resilience normatively as a desirable property of social-ecological systems, despite growing awareness of resilient properties leading to social and ecological degradation, vulnerability or barriers that hinder sustainability transformations (i.e., 'undesirable' resilience). This is the first study to qualify, quantify and compare the conceptualization of 'desirable' and 'undesirable' resilience across academic disciplines. Our literature analysis found that various synonyms are used to denote undesirable resilience (e.g., path dependency, social-ecological traps, institutional inertia). Compared to resilience as a desirable property, research on undesirable resilience is substantially less frequent and scattered across distinct scientific fields. Amongst synonyms for undesirable resilience, the term lock-in is more frequently and evenly used across academic disciplines. We propose that lock-in therefore has the potential to reconcile diverse interpretations of the mechanisms that constrain system transformation - explicitly and coherently addressing characteristics of reversibility and plausibility - and thus enabling integrative understanding of social-ecological system dynamics. Social media summary 'Lock-in' as a bridging concept for interdisciplinary understanding of barriers to desirable sustainability transitions.
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| 11. |
- Dornelles, André Zuanazzi, et al.
(författare)
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Transformation archetypes in global food systems
- 2022
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Ingår i: Sustainability Science. - : Springer Science and Business Media LLC. - 1862-4065 .- 1862-4057. ; 17:5, s. 1827-1840
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Tidskriftsartikel (refereegranskat)abstract
- Food systems are primary drivers of human and environmental health, but the understanding of their diverse and dynamic co-transformation remains limited. We use a data-driven approach to disentangle different development pathways of national food systems (i.e. ‘transformation archetypes’) based on historical, intertwined trends of food system structure (agricultural inputs and outputs and food trade), and social and environmental outcomes (malnutrition, biosphere integrity, and greenhouse gases emissions) for 161 countries, from 1995 to 2015. We found that whilst agricultural total factor productivity has consistently increased globally, a closer analysis suggests a typology of three transformation archetypes across countries: rapidly expansionist, expansionist, and consolidative. Expansionist and rapidly expansionist archetypes increased in agricultural area, synthetic fertilizer use, and gross agricultural output, which was accompanied by malnutrition, environmental pressures, and lasting socioeconomic disadvantages. The lowest rates of change in key structure metrics were found in the consolidative archetype. Across all transformation archetypes, agricultural greenhouse gases emissions, synthetic fertilizer use, and ecological footprint of consumption increased faster than the expansion of agricultural area, and obesity levels increased more rapidly than undernourishment decreased. The persistence of these unsustainable trajectories occurred independently of improvements in productivity. Our results underscore the importance of quantifying the multiple human and environmental dimensions of food systems transformations and can serve as a starting point to identify potential leverage points for sustainability transformations. More attention is thus warranted to alternative development pathways able of delivering equitable benefits to both productivity and to human and environmental health.
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| 12. |
- BarboSá, D., et al.
(författare)
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A sustainable approach to large ICT science based infrastructures: The case for radio astronomy
- 2014
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Ingår i: 2014 IEEE International Energy Conference, ENERGYCON 2014; Dubrovnik; Croatia; 13 May 2014 through 16 May 2014. - 9781479924493 ; , s. 668-674
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Konferensbidrag (refereegranskat)abstract
- Large sensor-based infrastructures for radio astronomy will be among the most intensive data-driven projects in the world, facing very high power demands. The geographically wide distribution of these infrastructures and their associated processing High Performance Computing (HPC) facilities require Green Information and Communications Technologies (ICT): a combination is needed of low power computing, power and byte efficient data storage, local data services, Smart Grid power management, and inclusion of Renewable Energies. Here we outline the major characteristics and innovation approaches to address power efficiency and long-term power sustainability for radio astronomy projects, focusing on Green ICT for science.
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| 13. |
- Boonstra, Wiebren J., et al.
(författare)
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What are the major global threats and impacts in marine environments? Investigating the contours of a shared perception among marine scientists from the bottom-up.
- 2015
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Ingår i: Marine Policy. - : Elsevier BV. - 0308-597X .- 1872-9460. ; 60, s. 197-201
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Tidskriftsartikel (refereegranskat)abstract
- Marine scientists broadly agree on which major processes influence the sustainability of marine environments worldwide. Recent studies argue that such shared perceptions crucially shape scientific agendas and are subject to a confirmation bias. Based on these findings a more explicit engagement with scientists' (shared) perceptions of global change in marine environments is called for. This paper takes stock of the shared understanding in marine science of the most pertinent, worldwide threats and impacts that currently affect marine environments. Using results from an email survey among leading academics in marine science this article explores if a shared research agenda in relation to global change in marine environments exists. The analysis demonstrates that marine scientists across disciplines are largely in agreement on some common features of global marine change. Nevertheless, the analysis also highlights where natural and social scientists diverge in their assessment. The article ends discussing what these findings imply for further improvement of interdisciplinary marine science.
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| 14. |
- Ahnström, Johan, et al.
(författare)
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Farmers' Interest in Nature and Its Relation to Biodiversity in Arable Fields
- 2013
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Ingår i: International Journal of Ecology. - : Hindawi Publishing Corporation. - 1687-9708 .- 1687-9716.
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Tidskriftsartikel (refereegranskat)abstract
- Biodiversity declines in farmland have been attributed to intensification of farming at the field level and loss of heterogeneity at the landscape level. However, farmers are not solely optimizing production; their actions are also influenced by social factors, tradition and interest in nature, which indirectly influence biodiversity but rarely are incorporated in studies of farmland biodiversity. We used social science methods to quantify farmers’ interest in nature on 16 farms with winter wheat fields in central Sweden, and combined this with biodiversity inventories of five organism groups (weeds, carabid beetles, bumblebees, solitary bees, and birds) and estimates of landscape composition andmanagement intensity at the field level.Agricultural intensity,measured as crop density, and farmers’ interest in nature explained variation in biodiversity, measured as the proportion of the regional species richness found on single fields. Interest in nature seemed to incorporate many actions taken by farmers and appeared to be influenced by both physical factors, for example, the surrounding landscape, and social factors, for example, social motivations.This study indicates that conservation of biodiversity in farmland, and design of new agri-environmental subsidy systems, would profit from taking farmers’ interest in nature and its relation to agricultural practices into account.
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| 15. |
- Andersson, Erik, et al.
(författare)
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Ambio fit for the 2020s
- 2022
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Ingår i: Ambio. - : Springer Nature. - 0044-7447 .- 1654-7209. ; 51:5, s. 1091-1093
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Tidskriftsartikel (refereegranskat)
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| 16. |
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| 17. |
- Lade, Steven J., et al.
(författare)
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An empirical model of the Baltic Sea reveals the importance of social dynamics for ecological regime shifts
- 2015
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 112:35, s. 11120-11125
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Tidskriftsartikel (refereegranskat)abstract
- Regime shifts triggered by human activities and environmental changes have led to significant ecological and socioeconomic consequences in marine and terrestrial ecosystems worldwide. Ecological processes and feedbacks associated with regime shifts have received considerable attention, but human individual and collective behavior is rarely treated as an integrated component of such shifts. Here, we used generalized modeling to develop a coupled social-ecological model that integrated rich social and ecological data to investigate the role of social dynamics in the 1980s Baltic Sea cod boom and collapse. We showed that psychological, economic, and regulatory aspects of fisher decision making, in addition to ecological interactions, contributed both to the temporary persistence of the cod boom and to its subsequent collapse. These features of the social-ecological system also would have limited the effectiveness of stronger fishery regulations. Our results provide quantitative, empirical evidence that incorporating social dynamics into models of natural resources is critical for understanding how resources can be managed sustainably. We also show that generalized modeling, which is well-suited to collaborative model development and does not require detailed specification of causal relationships between system variables, can help tackle the complexities involved in creating and analyzing social-ecological models.
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| 18. |
- Pedersen, M. W., et al.
(författare)
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Trends in marine climate change research in the Nordic region since the first IPCC report
- 2016
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Ingår i: Climatic Change. - : Springer Science and Business Media LLC. - 0165-0009 .- 1573-1480. ; 134:1-2, s. 147-161
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Tidskriftsartikel (refereegranskat)abstract
- Oceans are exposed to anthropogenic climate change shifting marine systems toward potential instabilities. The physical, biological and social implications of such shifts can be assessed within individual scientific disciplines, but can only be fully understood by combining knowledge and expertise across disciplines. For climate change related problems these research directions have been well-established since the publication of the first IPCC report in 1990, however it is not well-documented to what extent these directions are reflected in published research. Focusing on the Nordic region, we evaluated the development of climate change related marine science by quantifying trends in number of publications, disciplinarity, and scientific focus of 1362 research articles published between 1990 and 2011. Our analysis showed a faster increase in publications within climate change related marine science than in general marine science indicating a growing prioritisation of research with a climate change focus. The composition of scientific disciplines producing climate change related publications, which initially was dominated by physical sciences, shifted toward a distribution with almost even representation of physical and biological sciences with social sciences constituting a minor constant proportion. These trends suggest that the predominantly model-based directions of the IPCC have favoured the more quantitatively oriented natural sciences rather than the qualitative traditions of social sciences. In addition, despite being an often declared prerequisite to successful climate science, we found surprisingly limited progress in implementing interdisciplinary research indicating that further initiatives nurturing scientific interactions are required.
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| 19. |
- Sinclair, A R E, et al.
(författare)
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Testing hypotheses of trophic level interactions: a boreal forest ecosystem
- 2000
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Ingår i: Oikos. - : Wiley. - 1600-0706 .- 0030-1299. ; 89:2, s. 313-328
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Tidskriftsartikel (refereegranskat)abstract
- Models of community organization involve variations of the top-down (predator control) or bottom-up (nutrient limitation) hypotheses. Verbal models, however, can be interpreted in different ways leading to confusion. Therefore, we predict from first principles the range of possible trophic level interactions, and define mathematically the instantaneous effects of experimental perturbations. Some of these interactions are logically and biologically unfeasible. The remaining set of 27 feasible models is based on an initial assumption, for simplicity, of linear interactions between trophic levels. Many more complex and non-linear models are logically feasible but, for parsimony, simple ones are tested first. We use an experiment in the boreal forest of Canada to test predictions of instantaneous changes to trophic levels and distinguish between competing models. Seven different perturbations systematically removed each trophic level or, for some levels, supplemented them. The predictions resulting from the perturbations were concerned with the direction of change in biomass in the other levels. The direct effects of each perturbation produced strong top-down and bottom-up changes in biomass. At both the vegetation and herbivore levels top-down was stronger than bottom-up despite some compensatory growth stimulated by herbivory. The combination of experiments produced results consistent with two-way (reciprocal) interactions at each level. Indirect effects on one or two levels removed from the perturbation were either very weak or undetectable. Top-down effects were strong when direct but attenuated quickly. Bottom-up effects were less strong but persisted as indirect effects to higher levels. Although the 'pure reciprocal' model best fits our results for the boreal forest system different models may apply to different ecosystems around the world.
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| 20. |
- van Ardenne, Arnold, 1948, et al.
(författare)
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SKA antenna systems; Outlook for non-astronomy applications
- 2012
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Ingår i: Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. - 9781457709180 ; , s. 1199-1203
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Konferensbidrag (refereegranskat)abstract
- The globally endorsed Square Kilometre Array project primarily aims to advance high sensitivity radio astronomy using a distributed collection of radio telescope stations spiraling outward from the core along three to five arms out to 3000km. This planned highly sensitive instrument covering a frequency range from 70MHz up to 10GHz will be used as wideband, high resolution, wide observing field interferometer of which the first phase will be realized this decade. With the SKA telescope capabilities and with the underlying technologies, there are many space related applications outside the immediate radio astronomy domain. Examples are tracking space debris, precision orbit determination, simultaneous deep space tracking of multiple spacecrafts, GNSS and other ground segment applications, such as search and rescue tracking. After a brief introduction to the SKA, this paper will explore these potential application areas using the SKA based on its underlying approaches in the antenna and receiving subsystems.
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| 21. |
- van Putten, E. I., et al.
(författare)
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History matters : societal acceptance of deep-sea mining and incipient conflicts in Papua New Guinea
- 2023
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Ingår i: Maritime Studies. - : Springer Berlin/Heidelberg. - 1872-7859 .- 2212-9790. ; 22:3
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Tidskriftsartikel (refereegranskat)abstract
- New marine industries that develop and grow in response to the changing demand for their products have the potential to exert pressure on fragile marine environments. These emerging industries can benefit local communities but equally can have negative environmental and socio-cultural impacts. The development of new and emerging industries, like deep seabed mining (DSM), requires the acceptance and involvement of local communities. Yet, the history of marine exploitation is imbued with conflicts between industries and local communities. This paper presents a DSM case study in Papua New Guinea (PNG) to stimulate debate around the potential for conflict in the pursuit of resource extraction from the deep sea and the social and environmental harm that these extractions can cause. We do so by first presenting a timeline of local and extra-local events and enabling conditions that form the development background for the DSM Solwara 1 project in PNG. We then undertake a media narrative analysis to consider the contribution of aspects of social acceptability to this highly complex and multi-scale conflict. We find that the lack of (or a decrease in) social acceptability contributed to the conflict situation and ultimately the demise of the Solwara 1 project. Extra-locally, the initial development was positively framed around solutions for decarbonisation using new technology. Over time, actions by international NGOs, financial issues related to foreign companies, and asymmetry in the power balance between the Pacific Island nation and global businesses played a role in growing negative perceptions of acceptability. Historical experiences with prior environmental mining disasters, together with sea tenure governance challenges, and a lack of community and stakeholder acceptance also contributed to the demise of the project. Untangling and debating these complex interactions provides context and reasons for the tension between the lack of societal acceptance at a local scale and the perceived need for DSM products in the global North for innovative technologies and decarbonising societies. Better understanding these interactions and tensions can help emerging industries navigate a future blue economy.
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| 22. |
- Wong, Yeun Ying, et al.
(författare)
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Right ventricular failure in idiopathic pulmonary arterial hypertension is associated with inefficient myocardial oxygen utilization
- 2011
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Ingår i: Circulation Heart Failure. - 1941-3289 .- 1941-3297. ; 4:6, s. 700-706
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundIn idiopathic pulmonary arterial hypertension (IPAH), increased right ventricular (RV) power is required to maintain cardiac output. For this, RV O2 consumption (MVO2) must increase by augmentation of O2 supply and/or improvement of mechanical efficiency–ratio of power output to MVO2. In IPAH with overt RV failure, however, there is evidence that O2 supply (perfusion) reserve is reduced, leaving only increase in either O2 extraction or mechanical efficiency as compensatory mechanisms. We related RV mechanical efficiency to clinical and hemodynamic parameters of RV function in patients with IPAH and associated it with glucose metabolism.Methods and ResultsThe patients included were in New York Heart Association (NYHA) class II (n=8) and class III (n=8). They underwent right heart catheterization, MRI, and H215O-, 15O2-, C15O-, and 18FDG-PET. RV power and O2 supply were similar in both groups (NYHA class II versus class III: 0.54±0.14 versus 0.47±0.12 J/s and 0.109±0.022 versus 0.128±0.026 mL O2/min per gram, respectively). RV O2 extraction was near-significantly lower in NYHA class II compared with NYHA class III (63±17% versus 75±16%, respectively, P=0.10). As a result, MVO2 was significantly lower (0.066±0.012 versus 0.092±0.010 mL O2/min per gram, respectively, P=0.006). RV efficiency was reduced in NYHA class III (13.9±3.8%) compared with NYHA class II (27.8±7.6%, P=0.001). Septal bowing, measured by MRI, correlated with RV efficiency (r=−0.59, P=0.020). No relation was found between RV efficiency and glucose uptake rate. RV mechanical efficiency and ejection fraction were closely related (r=0.81, P<0.001).ConclusionsRV failure in IPAH was associated with reduced mechanical efficiency that was partially explained by RV mechanical dysfunction but not by a metabolic shift.
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| 23. |
- Wong, Yeun Ying, et al.
(författare)
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Supine-exercise-induced oxygen supply to the right myocardium is attenuated in patients with severe idiopathic pulmonary arterial hypertension
- 2011
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Ingår i: Heart. - : BMJ. - 1355-6037 .- 1468-201X. ; 97:24, s. 2069-2074
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundImpaired right ventricular (RV) myocardial blood flow (MBF) has been associated with RV dysfunction and fatal RV failure in idiopathic pulmonary hypertension during stress. MBF and O2 extraction from myocardial capillaries (O2 extraction fraction (OEF)) influence myocardial O2 supply.ObjectiveTo determine how the baseline RV OEF affects the amount of MBF increase induced by supine exercise, the authors hypothesise that higher baseline OEF (H-OEF) results in limited O2 extraction during exercise and that MBF must therefore be increased to obtain sufficient O2.MethodsIn 18 patients with idiopathic pulmonary hypertension, baseline OEF, resting MBF and exercise-induced MBF at 40% of maximal cardiopulmonary exercise testing load were measured using positron emission tomography and [15O]O2, [15O]H2O and [15O]CO.ResultsFor the whole population, exercise increased RV MBF from 0.68±0.16 to 1.13±0.38 ml/min/g (p<0.0001). The MBF exercise-to-rest ratio (reserve) was 1.7±0.7. The median baseline OEF was 0.73 at which the patient population was split into H-OEF and lower baseline OEF (L-OEF). Baseline MBF values (0.61±0.11 and 0.74±0.17 ml/min/g, respectively) were similar, and exercise induced a significant MBF increase in both groups (p=0.0001). However, exercise-induced increase in MBF was significantly less in the H-OEF group than in the L-OEF group (0.97±0.30 and 1.30±0.39 ml/min/g, respectively, p<0.05). Moreover, H-OEF patients had lower baseline stroke volume and cardiac output than the L-OEF group (52±19 ml and 4.0±1.1 l/min vs 78±18 ml and 5.5±0.9 l/min, respectively, both p<0.05).ConclusionsH-OEF patients were hemodynamically poorer and showed a lower exercise-induced MBF increase compared to L-OEF patients, suggesting exercise-induced O2 supply limitation.
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| 24. |
- Wong, Yeun Ying, et al.
(författare)
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Systolic pulmonary artery pressure and heart rate are main determinants of oxygen consumption in the right ventricular myocardium of patients with idiopathic pulmonary arterial hypertension
- 2011
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Ingår i: European Journal of Heart Failure. - : Wiley. - 1388-9842 .- 1879-0844. ; 13:12, s. 1290-1295
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Tidskriftsartikel (refereegranskat)abstract
- AimsIncreased afterload in idiopathic pulmonary arterial hypertension (IPAH) causes right ventricular (RV) hypertrophy and failure. Since RV remodelling occurs with alterations in RV oxygen metabolism, increasing our understanding in the factors determining RV O2 consumption in IPAH is necessary. In the left ventricle, it is known that heart rate and systolic blood pressure are the main determinants of myocardial O2 consumption (MVO2). However, the normal right heart has lower oxygen extraction and perfusion than the left myocardium, and RV energy metabolism is changed in hypertrophy. Therefore, it is not obvious that the relationsships of pressure and heart rate to MVO2 hold for the overloaded human right heart. We hypothesize that systolic pulmonary artery pressure (PAP) and heart rate (HR) are the major determinants of RV MVO2 in IPAH.Methods and resultsIn 18 IPAH patients (New York Heart Association class II and III), RV MVO2 was determined using positron emission tomography and 15O tracers. PAP and HR were measured during right heart catheterization. RV MVO2 was found to be related to systolic PAP (R2 = 0.54, P < 0.001), and inversely to stroke volume (R2 = 0.32, P = 0.015) and HR (R2 = 0.32, P = 0.014). Relationships of MVO2 to the rate pressure product (RPP), i.e. systolic pressure × HR, and wall stress were R2 = 0.55, P < 0.001, and R2 = 0.30, P = 0.020, respectively. Multiple regression of MVO2 on HR and systolic PAP gave R2 = 0.59, P = 0.001.ConclusionSystolic PAP and HR are the major determinants of RV MVO2 in IPAH. A further increase of HR and PAP with IPAH progression suggests a compromised RV myocardial oxygen availability.
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| 25. |
- Ahnström, Johan, et al.
(författare)
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Swedish Farmers Talking about Nature – A Study of the Interrelations between Farmers' Values and the Sociocultural Notion of Naturintresse
- 2011
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Ingår i: Sociologia Ruralis. - : Wiley. - 0038-0199 .- 1467-9523. ; 51, s. 420-435
-
Tidskriftsartikel (refereegranskat)abstract
- Agro-environmental schemes (AES) aim to counteract declining biodiversity on farmland and to improve ecosystem services, such as pollination and pest regulation. Studies show, however, that an involvement in AES does not lead to any substantive cognitive or motivational change in farmers' behaviour. Hermeneutic studies have tried to explain these modest effects by analysing farmers' mentalities and behaviour. This article contributes to these studies by using self-identifications and stories of 16 Swedish farmers about nature and AES to create a typology of different farmers' valuations. In pursuit of this objective the article establishes a conceptual link between these hermeneutic studies and so-called farming style analysis (FSA). The study lays bare latent points of friction between the views of these farmers and more conventional sociocultural notions about nature and nature conservation.
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| 26. |
- Björkvik, Emma, et al.
(författare)
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Going on and off the map : Lessons from Swedish fisher knowledge about spawning areas in the Baltic Sea
- 2021
-
Ingår i: Ocean and Coastal Management. - : Elsevier. - 0964-5691 .- 1873-524X. ; 211
-
Tidskriftsartikel (refereegranskat)abstract
- Scholars frequently promote fishers' rich understanding of marine environments as a legitimate and unique form of knowledge that must be accounted for in fisheries management. It is, however, challenging to combine fisher knowledge (FK) with the conventional scientific knowledge that fisheries management relies upon. In this paper we investigate the (in)commensurability between FK and scientific objectives and procedures. Towards this aim we performed interviews with a group of fishers who participated in an earlier Swedish study in which FK was used to map locations of fish spawning areas along the Swedish Baltic coast. By interviewing these fishers again we were able to identify and assess aspects of FK that were left implicit in the earlier study. Based on our results we discuss the value of these aspects of FK for understanding marine environments.
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| 27. |
- Björkvik, Emma, 1987-
(författare)
-
Stewardship in Swedish Baltic small-scale fisheries : A study on the social-ecological dynamics of local resource use
- 2020
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Sustainability scholars frequently advocate for stewardship as a strategy to foster sustainable development. Stewardship broadly refers to the wise and responsible use of nature, and is considered necessary to ensure the long-term wellbeing of humans and that of life in general. In the academic literature local resource users, like hunters, farmers or fishers, are widely acknowledged to act as stewards of the natural environments their livelihoods depend upon. Research shows that this group of people often are able to use natural resources in a sustainable manner, and that their knowledge of how to do so can improve natural resource management. However, research also emphasizes how different local resource users have different potential to steward natural environments. There is thus a need to better understand what stewardship among local resource users entails more concretely as well as when and how it fosters environmental sustainability. In this thesis, I study stewardship in the case of Swedish Baltic small-scale fisheries. I conceptualize stewardship as an interaction between fishers and the social-ecological context in which they are embedded. This conceptualization implies that stewardship does not exist or emerge from within fishers themselves, but is created, formed and realized through fishing practices. I further define and analyze stewardship using a framework composed of three dimensions: care, agency and knowledge. My findings are contained in four papers. Paper I presents a theoretical model of how local resource users respond to social and ecological change, and shows the model’s empirical relevance. Paper II gives an overview of the diversity and development within present-day Swedish Baltic small-scale fisheries. Paper III investigates the historical development of a Swedish fishery that targets the critically endangered European eel (Anguilla anguilla). Paper IV focuses on fishers’ knowledge and assesses how this knowledge can be applied in fisheries science and management. The papers collectively demonstrate the contextual nature of stewardship and showcase how stewardship varies over time as well as between fishers. The findings illustrate the ambiguous link between stewardship and environmental sustainability, they support the notion that fishers’ knowledge can improve fisheries management, while also suggesting that future research needs to pay more attention to how stewardship is empirically manifested. Overall, the thesis advances the understanding of stewardship by highlighting the social-ecological dynamics of local resource use.
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| 28. |
- Björkvik, Emma, 1987-, et al.
(författare)
-
Swedish small-scale fisheries in the Baltic Sea : Decline, diversity and development
- 2020
-
Ingår i: Small-Scale Fisheries in Europe. - Cham : Springer. - 9783030373702 - 9783030373719 ; , s. 559-579
-
Bokkapitel (refereegranskat)abstract
- Can Swedish small-scale fisheries escape decline and live up to their attributed potential to make fisheries more sustainable? Here we address this question by highlighting diversity within these fisheries. Through a specific focus on the Baltic Sea, we demonstrate that small-scale fisheries, defined by scale of operation, are neither sustainable nor unsustainable and have different social and ecological impacts. Based on our analysis we discuss general opportunities and challenges for future development of Swedish small-scale fisheries. Opportunities exist in connection to the creation of niche-products and branding fish as a local and/or exclusive commodity, while major challenges are linked to complexity and extensiveness of regulations, lack of recruitment of new fishers, and ecological sustainability of fishing practices. We argue that attention to diversity in Swedish small-scale fisheries has to be the starting point for meeting future challenges and fulfilling their attributed potential as a sustainable primary production sector.
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| 29. |
- Björkvik, Emma, 1987-, et al.
(författare)
-
Why fishers end up in social-ecological traps : a case study of Swedish eel fisheries in the Baltic Sea
- 2020
-
Ingår i: Ecology and Society. - 1708-3087. ; 25:1
-
Tidskriftsartikel (refereegranskat)abstract
- Unsustainable fishing can be surprisingly persistent despite devastating social, economic, and ecological consequences. Sustainability science literature suggests that the persistence of unsustainable fisheries can be understood as a social-ecological trap. Few studies have explicitly acknowledged the role of historical legacies for the development of social-ecological traps. Here, we investigate why fishers sometimes end up in social-ecological traps through a reconstruction of the historical interplay between fishers’ motivations, capacities, and opportunities to fish. We focus on the case of a Swedish fishery targeting the critically endangered European eel (Anguilla Anguilla) in the Baltic Sea. We performed the case study using a unique quantitative data set of social and ecological variables that spans over eight decades, in combination with earlier literature and interviews with fishers and fisheries experts. Our analysis reveals that Swedish archipelago fishers are highly dependent on the eel to maintain their fishing livelihood. The dependence on the eel originates from the 1930s, when fishers chose to intensify fishing for this species to ensure future incomes. The dependence persisted over time because of a series of changes, including improved eel fishing technology, heightened competition over catch, reduced opportunities to target other species, implementation of an eel fishing license, and the fishers’ capacity and motivation to deal with dwindling catches. Our study confirms that social-ecological traps are path-dependent processes. In terms of management, this finding means that it becomes progressively more difficult to escape the social-ecological trap with the passage of time. The longer entrapment endures, the more effort it takes and the bigger change it requires to return to a situation where fishers have more options so that unsustainable practices can be avoided. We conclude that fisheries policies need to be based on the premise that unsustainable fishing emerges through multiple rather than single causes.
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| 30. |
- Boonstra, M.J., et al.
(författare)
-
Semi-isostatic densification of heat-treated radiata pine
- 2007
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Ingår i: Wood Science and Technology. - : Springer Science and Business Media LLC. - 0043-7719 .- 1432-5225. ; 41:7, s. 607-617
-
Tidskriftsartikel (refereegranskat)abstract
- Semi-isostatic densification is a useful method to increase the density and to improve the mechanical properties of fast-grown softwood species like radiata pine. A major disadvantage of this method is the almost complete recovery of the original dimensions when densified wood is exposed to moisture. Heat treatment improves the dimensional stability of wood and might be a useful method to prevent this shape-recovery after densification. However, no or only a limited effect on the shape-recovery was found when densified radiata pine was exposed to moisture.
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| 31. |
- Boonstra, Wiebren J., et al.
(författare)
-
A sea of many colours - How relevant is Blue Growth for capture fisheries in the Global North, and vice versa?
- 2018
-
Ingår i: Marine Policy. - : Elsevier BV. - 0308-597X .- 1872-9460. ; 87, s. 340-349
-
Tidskriftsartikel (refereegranskat)abstract
- Blue Growth is a relatively new term that is meant to realize economic growth based on the exploitation of marine resources, while at the same time preventing their degradation, overuse, and pollution. This article discusses the relevance and usefulness of this new concept for the development of capture fisheries, a sector where growth largely seems impossible without ecological devastation. An analytical distinction between intensive and extensive growth is used to argue that certain development trajectories of capture fisheries might qualify as Blue Growth. Such trajectories of growth are illustrated with the development of the Swedish bleak roe trawl fishery in the Bothnian Bay and Norwegian whitefish fishery in the Barents Sea. Comparison of the cases highlights aspects that Blue Growth advocates might want to include if they choose to consider capture fisheries as a relevant economic activity. These aspects include: a) adding value through certification; b) technological development to make more efficient use of resources used up in the fishing operation, and to upgrade their fish as commodity; and c) specialization.
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| 32. |
- Boonstra, Wiebren J., et al.
(författare)
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Adaptation to climate change as social-ecological trap : a case study of fishing and aquaculture in the Tam Giang Lagoon, Vietnam
- 2015
-
Ingår i: Environment, Development and Sustainability. - : Springer Science and Business Media LLC. - 1387-585X .- 1573-2975. ; 17:6, s. 1527-1544
-
Tidskriftsartikel (refereegranskat)abstract
- The ways in which people respond to climate change are frequently analyzed and explained with the term adaptation. Conventionally, adaptation is understood as adjustments in behavior either to mitigate harm or to exploit opportunities emerging from climate change. The idea features prominently in scientific analyses as well as in policy programs. Despite its growing popularity over the years, the concept has also received critique. Social scientists in particular take issue with the implicit assumptions about human behavior and fitness advantages (or optimal behavior) that come with the term. Clearly, not all human and animal behavioral responses are optimal or display fitness advantages. To the contrary, sub-optimal and maladaptive behavior is rather widespread. Explaining the possibility of maladaptive or sub-optimal behavior led scholars to introduce the idea of traps. Trap situations refer to a mismatch between behavior and the social and/or ecological conditions in which this behavior takes place. This paper reviews the analytical value of traps for the study of human responses to climate change. It first lays out the theoretical assumptions underpinning the concept. A case study of the Tam Giang Lagoon, in central Vietnam, is used to evaluate how well the trap concept captures the sub-optimality and variety of human responses to climate change.
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| 33. |
- Boonstra, Wiebren J., et al.
(författare)
-
Classifying fishers' behaviour. An invitation to fishing styles
- 2016
-
Ingår i: Fish and Fisheries. - : Wiley. - 1467-2960 .- 1467-2979. ; 17:1, s. 78-100
-
Tidskriftsartikel (refereegranskat)abstract
- The study and classification of fishers’ behaviour remains a much debated topic. There is a tension between detailed empirical studies, which highlight the variety and diversity of fisheries, and the parsimony and generalization required to satisfy science and policy demands. This study contributes to this debate. The first sec- tion reviews quantitative methods currently used for classifying fishing practices. The review uncovers significant weaknesses in quantitative classification methods, which, we argue, can be improved through the complementary use of qualitative methods. To this purpose, we introduce the concept of ‘fishing style’, which integrates quantitative classification methods with qualitative analysis. We explain the scientific premises of the fishing-style concept, outline a general methodological framework and present a fishing-style analysis of Swedish Baltic Sea fisheries. Based on these results, we conclude that it is possible to classify fishing practices in a rel- atively uniform and limited number of styles that can highlight the rich, empirical diversity of fishers’ behaviour. We therefore propose that fishing-style analysis, based on an integration of quantitative and qualitative methods, can be an impor- tant step towards more effective and sustainable fisheries management.
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| 34. |
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| 35. |
- Boonstra, Wiebren J.
(författare)
-
Conceptualizing power to study social-ecological interactions
- 2016
-
Ingår i: Ecology and Society. - 1708-3087. ; 21:1
-
Tidskriftsartikel (refereegranskat)abstract
- My aim is to conceptualize power using social science theory and to demonstrate why and how the concept of power can complement resilience studies and other analyses of social-ecological interaction. Social power as a scientific concept refers to the ability to influence both conduct and context. These two dimensions of power (conduct and context) can be observed by differentiating between various sources of power, including, for example, technology or mental power. The relevance of the conceptualization of power presented here is illustrated with the example of fire as a source of social-ecological power. I conclude by discussing how attention to power can help to address issues of social justice and responsibility in social-ecological interactions.
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| 36. |
- Boonstra, Wiebren J., Dr. 1976-
(författare)
-
More than a single footnote : Connecting Alexis de Tocqueville and Norbert Elias
- 2021
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Ingår i: Human Figurations. - 2166-6644. ; 9:1, s. 1-24
-
Tidskriftsartikel (refereegranskat)abstract
- The view of Norbert Elias as a maverick sociologist who developed his ideas in isolation from other academic thinkers and schools has been debunked since the 1970s. A number of studies have linked Elias’s work to scholars such as Marx, Weber, Freud, Huizinga, and Mannheim, amongst others. In this paper, I contribute to these efforts by exploring affinities between Elias and Alexis de Tocqueville. Elias made only passing reference to Tocqueville in his published work, and Tocqueville has, until now, also been absent in the growing literature that situates Elias within the sociological canon. This is surprising, considering that affinities between the works of the two sociologists can be discerned beyond the single footnote that Elias reserved for Tocqueville. To discover and discuss these affinities, I compare Tocqueville’s observations on how ‘mores become milder as conditions become equal’ and Elias’s argument on ‘functional democratisation’, as well as their explanation and interpretation of the French Revolution. The comparison reveals that, in addition to a thematic affinity, Tocqueville and Elias also share a style of theorising and methodology that neither of them makes very explicit but that is distinct from more well-known traditions of sociological research.
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| 37. |
- Boonstra, Wiebren J., et al.
(författare)
-
The Historical Dynamics of Social-Ecological Traps
- 2014
-
Ingår i: Ambio. - : Springer Science and Business Media LLC. - 0044-7447 .- 1654-7209. ; 43:3, s. 260-274
-
Forskningsöversikt (refereegranskat)abstract
- Environmental degradation is a typical unintended outcome of collective human behavior. Hardin's metaphor of the tragedy of the commons has become a conceived wisdom that captures the social dynamics leading to environmental degradation. Recently, traps has gained currency as an alternative concept to explain the rigidity of social and ecological processes that produce environmental degradation and livelihood impoverishment. The trap metaphor is, however, a great deal more complex compared to Hardin's insight. This paper takes stock of studies using the trap metaphor. It argues that the concept includes time and history in the analysis, but only as background conditions and not as a factor of causality. From a historical-sociological perspective this is remarkable since social-ecological traps are clearly path-dependent processes, which are causally produced through a conjunction of events. To prove this point the paper conceptualizes social-ecological traps as a process instead of a condition, and systematically compares history and timing in one classic and three recent studies of social-ecological traps. Based on this comparison it concludes that conjunction of social and environmental events contributes profoundly to the production of trap processes. The paper further discusses the implications of this conclusion for policy intervention and outlines how future research might generalize insights from historical-sociological studies of traps.
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| 38. |
- Boonstra, Wiebren J., et al.
(författare)
-
The quality of compliance : investigating fishers' responses towards regulation and authorities
- 2017
-
Ingår i: Fish and Fisheries. - : Wiley. - 1467-2960 .- 1467-2979. ; 18:4, s. 682-697
-
Tidskriftsartikel (refereegranskat)abstract
- A substantial amount of scientific effort goes into understanding and measuring compliance in fisheries. Understanding why, how and when fishers follow or violate rules is crucial for designing effective fishery policies that can halt overfishing. Non-compliance was initially explained almost exclusively with reference to economic and self-interested motivations. More recently, however, most explanations involve a combination of economic, social, political and environmental factors. Despite this recent development towards more holistic explanations, many scientists continue to frame the issue in binary terms: fishers either follow rules, or they don't. In this article we challenge this binary interpretation and focus attention on the diversity of fishers' dispositions and perceptions that underpin compliant behaviour. To this aim we construct a typology of fishers' responses towards regulation and authorities, thereby developing conceptual tools to understand different motivations and attitudes that underlie compliance outcomes. For this purpose, we identify the motivational postures of 'creativity' and 'reluctance', and then highlight their empirical relevance with an interview study of Swedish fishers. Reasons for studying the quality and diversity of fishers' motivations and responses are not purely academic. Conceptualizing and observing the quality of compliance can help policymakers and managers gauge and anticipate the potentiality of non-compliant fishing practices that may threaten the resilience of marine ecosystems.
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| 39. |
- Boonstra, Wiebren J., et al.
(författare)
-
The Social Dynamics of Degrowth
- 2013
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Ingår i: Environmental Values. - 0963-2719 .- 1752-7015. ; 22:2, s. 171-189
-
Tidskriftsartikel (refereegranskat)abstract
- Degrowth cannot be realised from within a capitalist society, since growth is the sine qua non for capitalism. But, societies are no blank slates; they are not built from scratch. Putting these two thoughts together seems to make degrowth logically impossible. In this paper we argue that this paradox can be solved with the use of classical and contemporary concepts from the social sciences. We illustrate the use of these concepts with reference to studies on current practices and patterns of food production and consumption. The concept of social mechanism is used to illustrate how social practices can simultaneously reinforce and challenge the dominant (food) regime. We argue that current discussions on degrowth fail to envision how such contrasting developments are linked, and that the degrowth paradox originates in the idea of capitalism and the steady-state economy as alternative systems. The paradox dissolves with studies of mechanisms and social practices that show how the two systems are not autonomous, but 'hybridised' and come into existence and gain shape as reactions to each other.
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| 40. |
- Boonstra, Wiebren J., Dr. 1976-, et al.
(författare)
-
Urban fishing reveals underrepresented diversity
- 2022
-
Ingår i: Nature Food. - : Springer Science and Business Media LLC. - 2662-1355. ; 3
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 41. |
- Boonstra, Wiebren J., et al.
(författare)
-
Urban nature does not stop at the waterfront, neither should urban planning: A case study of street fishing in Stockholm
- 2023
-
Ingår i: Climate-Proof Planning. - Stockholm : KTH Royal Institute of Technology. - 9789180406543
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- While research on green urban spaces has established their important values and functions, less attention has been given to blue urban spaces and its importance for wellbeing of urban residents. With the project “Blue Urban Commons” (2020-2023) we wish to gain more knowledge about these blue spaces through a case study of Stockholm, Sweden. The aim with this project is to understand how urban dwellers use and depend on city waters for recreation, food, and general well-being, with a specific focus on recreational fishing. This paper consists of four parts highlighting research strands, preliminary findings and reflections concerning what issues are important for planning blue urban spaces. The first part provides an understanding of the various conditions that enables Stockholm to be an attractive city for fishing. In the second part, we present some preliminary findings regarding the diversity of fishers in Stockholm, using an ideal typical distinction between fishing for fun and fishing for food. The fact that many people fish for food in Stockholm raises several questions, such as e.g. on water pollution and their potential health consequences for fishers and the fish, which we present in the third part. We conclude with some reflections on the various goals of planning urban waterfronts and the trade-offs that it includes between food safety and security, equal access, and human and non-human wellbeing.
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| 42. |
- Carlson, Andrew K., et al.
(författare)
-
More than ponds amid skyscrapers : Urban fisheries as multiscalar human-natural systems
- 2022
-
Ingår i: Aquatic Ecosystem Health & Management. - : Michigan State University Press. - 1463-4988 .- 1539-4077. ; 25:1, s. 49-58
-
Tidskriftsartikel (refereegranskat)abstract
- Although social-ecological fisheries research is growing, comparatively little attention is paid to fisheries in urban environments. We aim to address this imbalance, because as cities expand worldwide, we expect urban fisheries to become more widespread and important in providing food/nutrition security, recreation, community well-being, and other benefits to fisheries stakeholders and urban dwellers across spatiotemporal scales. This paper contains a first analysis of the economic and sociocultural provisions, trade-offs, and dilemmas associated with urban fisheries to yield insights for sustainable management and planning of urban blue space. To address these objectives, we use the metacoupling framework, a method for assessing human-nature interactions within and across adjacent and distant fisheries systems. We use examples from multiple countries and data from the United States to illustrate how urban fisheries encompass flows of people, money, and information across multiple spatiotemporal scales and provide nutritional, recreational, social, and cultural benefits to fisheries stakeholders. Throughout the world, urban fisheries are influenced by wide-ranging human needs (e.g. food provisioning, recreation, aquatic resource education) that generate social-ecological effects within and beyond cities. Our analysis yields insights for developing holistic, metacoupling-informed management approaches that address the diverse social-ecological objectives and trade-offs involved in sustainable development of urban fisheries.
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| 43. |
- Cooke, Benjamin, et al.
(författare)
-
Dwelling in the biosphere : exploring an embodied human-environment connection in resilience thinking
- 2016
-
Ingår i: Sustainability Science. - : Springer Science and Business Media LLC. - 1862-4065 .- 1862-4057. ; 11:5, s. 831-843
-
Forskningsöversikt (refereegranskat)abstract
- Resilience has emerged as a prominent paradigm for interpreting and shaping human-environment connections in the context of global environmental change. Resilience emphasizes dynamic spatial and temporal change in social-ecological systems where humans are inextricably interwoven with the environment. While influential, resilience thinking has been critiqued for an under-theorized framing of socio-cultural dynamics. In this paper, we examine how the resilience concepts of planetary boundaries and reconnecting to the biosphere frame human-environment connection in terms of mental representations and biophysical realities. We argue that focusing solely on mental reconnection limits further integration between the social and the ecological, thus countering a foundational commitment in resilience thinking to social-ecological interconnectedness. To address this susceptibility we use Tim Ingold's 'dwelling perspective' to outline an embodied form of human-environment (re)connection. Through dwelling, connections are not solely produced in the mind, but through the ongoing interactivity of mind, body and environment through time. Using this perspective, we position the biosphere as an assemblage that is constantly in the making through the active cohabitation of humans and nonhumans. To illustrate insights that may emerge from this perspective we bring an embodied connection to earth stewardship, given its growing popularity for forging local to global sustainability transformations.
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| 44. |
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| 45. |
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| 46. |
- Enqvist, Johan, 1982-, et al.
(författare)
-
Against the current : rewiring rigidity trap dynamics in urban water governance through civic engagement
- 2016
-
Ingår i: Sustainability Science. - : Springer Science and Business Media LLC. - 1862-4065 .- 1862-4057. ; 11:6, s. 919-933
-
Tidskriftsartikel (refereegranskat)abstract
- This paper investigates how the agency of local residents can affect persistent and unsustainable practices in urban water supply governance. Using a case study from Bangalore, India, we analyze a social-ecological trap which developed after a shift to external water provision paired with rapid urbanization. The reluctance of forsaking initial investments in infrastructure and competence, and the subsequent loss of the local network of lakes built for harvesting rainwater, reinforced dependence on external sources while undermining groundwater levels in the city. These feedbacks made water scarcity a structurally persistent feature of Bangalore. This situation started to change when local residents recently started organizing to preserve and restore Bangalore's lakes. By entering collaborative management agreements with municipal authorities, these lake groups have restored and established effective protection of five lakes. Through a case study of this civic engagement we show that the lake restorations have the potential to counteract trap mechanisms by restoring ecological functions, and by reducing water scarcity as groundwater levels rise and authorities are relieved from maintenance and monitoring tasks. Importantly, these lake groups have also created opportunities for over a dozen similar groups to form across the city. This demonstrates that social movements can be an important source of change in social-ecological traps.
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| 47. |
- Garavito-Bermúdez, Diana, 1978-, et al.
(författare)
-
Knowing by fishing : Conceptualising ecological knowledge as working knowledge
-
Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- That the ecological knowledge of local users has great value for sustainable resource use and human development is widely accepted. Underneath this broad consensus about its importance nevertheless lies uncertainty and debate about the ways in which it can be best conceptualized. Is this knowledge best understood as a ‘system of knowledge’ or as ’ways of knowing’? And how can it be conceptually and methodologically operationalized as grounded in processes of work? In this study, we explore how fishers’ work in ecosystems influences what they know. We combine a Fishing Style Analysis with the Structure-Dynamic-Function Framework for a systematic study of the ecological knowledge used in Baltic coastal fisheries in Blekinge, Sweden. The results are used to discuss the theoretical and methodological implications of perceiving fishers’ ecological knowledge as generated, accumulated, transferred and adjusted through processes of work.
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| 48. |
- Garavito-Bermudez, Diana, et al.
(författare)
-
Knowing through fishing : exploring the connection between fishers' ecological knowledge and fishing styles
- 2023
-
Ingår i: Journal of Environmental Planning and Management. - : Routledge. - 0964-0568 .- 1360-0559. ; 66:9, s. 1841-1860
-
Tidskriftsartikel (refereegranskat)abstract
- That fishers' ecological knowledge (FEK) can contribute to the sustainability and legitimacy of environmental planning and management is widely accepted. Nevertheless, despite this broad consensus about its importance, there is uncertainty about the ways in which FEK can be captured methodologically. Here, we present the results of a methodological inquiry aimed to connect FEK to the diversity of work practices within fisheries. Using a sample from a qualitative study of Swedish small-scale fishers, we test to what extent a new combination of concept and method - Fishing Style analysis and the Structure-Dynamic-Function framework - can produce insights into the partiality and diversity of FEK, as well as its embodied and tacit aspects. Results demonstrate how different work practices generate a variety of FEKs. We use this finding to discuss the implications of our work for future study of FEK, and how attention to FEK can inform environmental planning and management.
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| 49. |
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| 50. |
- Haider, L. Jamila, et al.
(författare)
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Effects of development interventions on biocultural diversity : a case study from the Pamir Mountains
- 2020
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Ingår i: Agriculture and Human Values. - : Springer Science and Business Media LLC. - 0889-048X .- 1572-8366. ; 37:3, s. 683-697
-
Tidskriftsartikel (refereegranskat)abstract
- The relationship between nature and culture in biocultural landscapes runs deep, where everyday practices and rituals have coevolved with the environment over millennia. Such tightly intertwined social-ecological systems are, however, often in the world's poorest regions and commonly subject to development interventions which effect biocultural diversity. This paper investigates the social and ecological implications of an introduced wheat seed in the Pamir Mountains. We examine contrasting responses to the intervention through participatory observation of food practices around a New Year ritual, and interviews in two communities. Our results show how one community fostered biocultural diversity, while the other did not, resulting in divergent processes of social and cultural change. In the former, ritual is practiced with traditional seed varieties, involving reciprocal exchange and is characterised by little outmigration of youth. In contrast, the second community celebrates the ritual with replaced store-bought ingredients, no longer cultivates any grain crops and where circular migration to Russia is the main livelihood strategy. Coevolution as an analytical lens enables us to understand these divergent pathways as processes of dynamically changing social-ecological relations. The paper suggests that a deeper understanding of social-ecological relationships in landscapes offers a dynamic and process-oriented understanding of development interventions and can help identify endogenous responses to local, regional and global change-thereby empowering more appropriate and effective development pathways.
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