| 1. |
- Hasler, Berit, et al.
(författare)
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Sustainable ecosystem governance under changing climate and land use : An introduction
- 2019
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Ingår i: Ambio. - : Springer Netherlands. - 0044-7447 .- 1654-7209. ; 48, s. 1235-1239
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Combatting eutrophication is currently a major challenge for policy makers in the Baltic Sea region, and it is likely to remain so in the decades to come. Although total nutrient loads to the Baltic Sea have recently declined, the gap between current loadings and those required to ensure the desired status is still substantial (Reusch et al. 2018). This Special Issue is dedicated to research that helps inform how the eutrophication challenge might best be addressed by improving our understanding of technological constraints, societal drivers of change, land uses, environmental policies, and innovative governance with stakeholder involvement. These issues are important for the current generation and those to come and are issues we must address in order to succeed in reducing nutrient loads to the desired levels to gradually achieve the desired good environmental status of the Baltic Sea. Currently, we witness a new era of water policies across the entire Baltic Sea region. Our changing climate is impacting on precipitation and runoff, and is also the reason why new EU climate policies seek to tie carbon sinks more visibly to carbon sources. Both these aspects have repercussions for water policies. Thus, solving eutrophication challenges requires sharpening of existing policies and instruments, as well as creating new insights and governance approaches with broad stakeholder involvement in a changing environment. In order to design coherent water and climate policies, and target and implement those policies more efficiently, policy makers need to combine new insights regarding the inhabitants in the region, the catchments, and the Baltic Sea itself. Such insights can be expected from soil scientists, agronomists, hydrogeologists, marine ecologists, economists, and social and policy scientists. What is needed is on the one hand effectively targeted governance at appropriate spatial and temporal scales, adapted to differing interests and motivations of citizens living around the Baltic Sea, and on the other hand fine tuning and co-designing of policies at local, national, Baltic Sea regional and EU level. This Special Issue brings together recent research from four BONUS-funded projects—BONUS BALTICAPP, BONUS GO4BALTIC, BONUS MIRACLE and BONUS SOILS2SEA—that comprised part of the ‘Viable Ecosystem’ and ‘Sustainable Ecosystem Services’ BONUS research programmes. The projects addressed these common concerns through somewhat different, but inter-related, themes. Key messages emphasized and discussed in the research papers of this Special Issue are summarized under four interlinked themes: Scenarios for the future, Policies and ecosystem services in water governance, Novel approaches for managing nutrients, and Advanced modelling from field level to the entire Baltic Sea region.
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| 2. |
- Podgrajsek, Eva, et al.
(författare)
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Comparison of floating chamber and eddy covariance measurements of lake greenhouse gas fluxes
- 2014
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Ingår i: Biogeosciences. - : Copernicus GmbH. - 1726-4170 .- 1726-4189. ; 11, s. 4225-4233
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Tidskriftsartikel (refereegranskat)abstract
- Fluxes of carbon dioxide (CO2) and methane (CH4) from lakes may have a large impact on the magnitude of the terrestrial carbon sink. Traditionally lake fluxes have been measured using the floating chamber (FC) technique; however, several recent studies use the eddy covariance (EC) method. We present simultaneous flux measurements using both methods at lake Tämnaren in Sweden during field campaigns in 2011 and 2012. Only very few similar studies exist. For CO2 flux, the two methods agree relatively well during some periods, but deviate substantially at other times. The large discrepancies might be caused by heterogeneity of partial pressure of CO2 (pCO2w) in the EC flux footprint. The methods agree better for CH4 fluxes. It is, however, clear that short-term discontinuous FC measurements are likely to miss important high flux events.
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| 3. |
- Gomez-Gener, L., et al.
(författare)
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Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions
- 2021
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Ingår i: Nature Geoscience. - : Springer Science and Business Media LLC. - 1752-0894 .- 1752-0908. ; 14, s. 289-294
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Tidskriftsartikel (refereegranskat)abstract
- Carbon dioxide (CO2) emissions to the atmosphere from running waters are estimated to be four times greater than the total carbon (C) flux to the oceans. However, these fluxes remain poorly constrained because of substantial spatial and temporal variability in dissolved CO2 concentrations. Using a global compilation of high-frequency CO2 measurements, we demonstrate that nocturnal CO2 emissions are on average 27% (0.9 gC m(-2) d(-1)) greater than those estimated from diurnal concentrations alone. Constraints on light availability due to canopy shading or water colour are the principal controls on observed diel (24 hour) variation, suggesting this nocturnal increase arises from daytime fixation of CO2 by photosynthesis. Because current global estimates of CO2 emissions to the atmosphere from running waters (0.65-1.8 PgC yr(-1)) rely primarily on discrete measurements of dissolved CO2 obtained during the day, they substantially underestimate the magnitude of this flux. Accounting for night-time CO2 emissions may elevate global estimates from running waters to the atmosphere by 0.20-0.55 PgC yr(-1). Failing to account for emission differences between day and night will lead to an underestimate of global CO2 emissions from rivers by up to 0.55 PgC yr(-1), according to analyses of high-frequency CO2 measurements.
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| 4. |
- Stoddard, Isak, et al.
(författare)
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Three Decades of Climate Mitigation: Why Haven't We Bent the Global Emissions Curve?
- 2021
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Ingår i: Annual Review of Environment and Resources. - : Annual Reviews. - 1543-5938 .- 1545-2050. - 9780824323462 ; 46, s. 653-689
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Forskningsöversikt (refereegranskat)abstract
- Despite three decades of political efforts and a wealth of research on the causes and catastrophic impacts of climate change, global carbon dioxide emissions have continued to rise and are 60% higher today than they were in 1990. Exploring this rise through nine thematic lenses-covering issues of climate governance, the fossil fuel industry, geopolitics, economics, mitigation modeling, energy systems, inequity, lifestyles, and social imaginaries-draws out multifaceted reasons for our collective failure to bend the global emissions curve. However, a common thread that emerges across the reviewed literature is the central role of power, manifest in many forms, from a dogmatic political-economic hegemony and influential vested interests to narrow techno-economic mindsets and ideologies of control. Synthesizing the various impediments to mitigation reveals how delivering on the commitments enshrined in the Paris Agreement now requires an urgent and unprecedented transformation away from today's carbon- and energy-intensive development paradigm.
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| 5. |
- Persson, Martin, 1976, et al.
(författare)
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A method for calculating a land-use change carbon footprint (LUC-CFP) for agricultural commodities - applications to Brazilian beef and soy, Indonesian palm oil
- 2014
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Ingår i: Global Change Biology. - : Wiley. - 1365-2486 .- 1354-1013. ; 20:11, s. 3482-3491
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Tidskriftsartikel (refereegranskat)abstract
- The world's agricultural system has come under increasing scrutiny recently as an important driver of global climate change, creating a demand for indicators that estimate the climatic impacts of agricultural commodities. Such carbon footprints, however, have in most cases excluded emissions from land-use change and the proposed methodologies for including this significant emissions source suffer from different shortcomings. Here, we propose a new methodology for calculating land-use change carbon footprints for agricultural commodities and illustrate this methodology by applying it to three of the most prominent agricultural commodities driving tropical deforestation: Brazilian beef and soybeans, and Indonesian palm oil. We estimate land-use change carbon footprints in 2010 to be 66 tCO2/t meat (carcass weight) for Brazilian beef, 0.89 tCO2/t for Brazilian soybeans, and 7.5 tCO2/t for Indonesian palm oil, using a 10 year amortization period. The main advantage of the proposed methodology is its flexibility: it can be applied in a tiered approach, using detailed data where it is available while still allowing for estimation of footprints for a broad set of countries and agricultural commodities; it can be applied at different scales, estimating both national and subnational footprints; it can be adopted to account both for direct (proximate) and indirect drivers of land-use change. It is argued that with an increasing commercialization and globalization of the drivers of land-use change, the proposed carbon footprint methodology could help leverage the power needed to alter environmentally destructive land-use practices within the global agricultural system by providing a tool for assessing the environmental impacts of production, thereby informing consumers about the impacts of consumption and incentivizing producers to become more environmentally responsible.
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| 6. |
- Shabb, Katherine, et al.
(författare)
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Climate city contracts? Governing towards climate-neutral cities
- 2023
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Ingår i: A Research Agenda for Sustainable Cities and Communities. - Cheltenham : Edward Elgar Publishing. - 9781800372030 - 9781800372023 ; , s. 141-152
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Bokkapitel (refereegranskat)abstract
- In Chapter 10, Shabb, McCormick, Anderberg and Mujkic investigate how Climate City Contracts (CCCs) are being developed in Europe and what it means for other parts of the world. CCCs are intended to be different from current strategies to tackle climate change because they are designed as part of a larger mission with many stakeholders, funding and growing momentum. CCCs are a mechanism to ensure that city-level work is not occurring in a vacuum but rather facilitates multi-level integration between cities, national agencies, and the European Union, but also collaboration across all stakeholders. The current focus of CCCs is mostly on the process rather than outcomes. Ambitious Climate Investment Plans, which encompass private sector efforts, are necessary to underpin the goals and activities outlined in CCCs.
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| 7. |
- Juhola, Sirkku, et al.
(författare)
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Climate Change Transformations in Nordic Agriculture?
- 2017
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Ingår i: Journal of Rural Studies. - Oxford : Pergamon Press. - 0743-0167 .- 1873-1392. ; 51, s. 28-36
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Tidskriftsartikel (refereegranskat)abstract
- Climate change is expected to have negative impacts but also to bring potential opportunities for agriculture and crop productivity in the Nordic countries. Little research has been conducted at the farmer level to identify what adaptation measures are being considered or already taken and transformative these are. Based on semi-structured interviews with farmers and extension officers from two of the most fertile agricultural areas of Finland and Sweden, this study examines to what extent Nordic farmers are engaged in transforming their farming systems. The results show that some transformational changes are taking place already but most changes are incremental. Currently, agricultural policies and regulations are perceived as a greater adaptation challenge than climate change.
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| 8. |
- Linkhorst, Annika, et al.
(författare)
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Spatially Resolved Measurements in Tropical Reservoirs Reveal Elevated Methane Ebullition at River Inflows and at High Productivity
- 2021
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Ingår i: Global Biogeochemical Cycles. - : American Geophysical Union (AGU). - 0886-6236 .- 1944-9224. ; 35:5
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Tidskriftsartikel (refereegranskat)abstract
- An increasing number of rivers are being dammed, particularly in the tropics, and reservoir water surfaces can be a substantial anthropogenic source of greenhouse gases. On average, 80% of the CO2-equivalent emission of reservoirs globally has been attributed to CH4, which is predominantly emitted via ebullition. Since ebullition is highly variable across space and time, both measuring and upscaling to an entire reservoir is challenging, and estimates of reservoir CH4 emission are therefore not well constrained. We measured CH4 ebullition at high spatial resolution with an echosounder and bubble traps in two reservoirs of different use (water storage and hydropower), size and productivity in the tropical Brazilian Atlantic Rainforest biome. Based on the spatially most well-resolved whole-reservoir ebullition measurements in the tropics so far, we found that mean CH4 ebullition was twice as high in river inflow areas than in other parts of the reservoirs, and more than four times higher in the eutrophic reservoir compared to the oligotrophic one. Using different upscaling approaches rendered similar whole-reservoir CH4 ebullition estimates, suggesting that highly spatially resolved measurements may be more important for constraining reservoir-wide CH4 estimates than choice of upscaling approach. The minimum sampling effort was high (>250 and >1700 30-m segments of hydroacoustic survey to reach within 50% or 80% accuracy, respectively). This suggests that traditional manual bubble trap measurements should be abandoned in favour of highly resolved measurements in order to get spatially representative estimates of CH4 ebullition, which accounted for 60 and 99% of total C emission in the two studied reservoirs.
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| 9. |
- Ostwald, Madelene, 1966-, et al.
(författare)
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Can India’s wasteland be used for biomass plantations?
- 2015
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Rapport (populärvet., debatt m.m.)abstract
- How much of India’s vast wasteland can be used for growing plants such as eucalyptus and Jatropha? As land demands have increased, the sustainable use of marginal lands has become increasingly important. In India about 47 million hectares, or 15 percent of the total geographical area, is classified as wastelands. Here we assess the climate and land quality requirements of eucalyptus, a commonly used plantation tree, and Jatropha, a much-discussed biodiesel crop. We find that roughly half of the degraded lands are suitable for growing eucalyptus and/or Jatropha.
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| 10. |
- Wiréhn, Lotten, 1985-
(författare)
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Climate indices for the tailoring of climate information : a systematic literature review of Swedish forestry and agriculture
- 2021
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Ingår i: Climate Risk Management. - : ELSEVIER. - 2212-0963. ; 34
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Tidskriftsartikel (refereegranskat)abstract
- Climate information is an important support for national adaptation plan processes, but there is at the same time a general desire that climate information should be more relevant and appropriate in relation to decision-making contexts. An initial step in such a development towards tailored climate information would be to understand the currently available climate indices, their defi-nitions and contexts. This study systematically reviews the scientific literature on climate indices and factors related to specific climate impacts, and in this way identifies currently available climate indices for Swedish forestry and agriculture. The identified indices are analysed relative to climate change impact categories from the vulnerability assessments and adaptation plans set out by the Swedish Forest Agency and the Swedish Board of Agriculture, to indicate development potentials and research gaps in climate indices. The review identifies 79 definitions of climate indices for forestry and 63 indices for agriculture in Sweden. The reviewed literature has employed or developed climate indices for only 11 of the 25 types of climate impact emphasised as important by the two sectoral authorities. Most of the climate indices identified have been adopted for use in modelling forest growth or crop growth and productivity. The results of the review found indices lacking for a substantial number of impacts that are relevant for Swedish forestry and agriculture. The study shows that scientific literature on climate indices to a very limited degree addresses the specific tailoring of climate indices. Potential reasons for the lack of climate indices are discussed, and the study suggests that there is a need to continue climate model development such that the models better represent relevant processes, to advance research on the co-design of indices together with sectoral stakeholders, and to enhance collaboration between adaptation, impact modelling and climatology research. The results of this study may be used in future research to analyse if and how the identified climate indices can be actionable for different stakeholders, and as a foundation to examine the demands and feasibilities of developing new tailored climate indices.
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