| 1. |
- Asplund, Maria. E., 1970, et al.
(författare)
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Dynamics and fate of blue carbon in a mangrove-seagrass seascape : influence of landscape configuration and land-use change
- 2021
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Ingår i: Landscape Ecology. - : Springer. - 0921-2973 .- 1572-9761. ; 36, s. 1489-1509
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Tidskriftsartikel (refereegranskat)abstract
- Context Seagrass meadows act as efficient natural carbon sinks by sequestering atmospheric CO2 and through trapping of allochthonous organic material, thereby preserving organic carbon (C-org) in their sediments. Less understood is the influence of landscape configuration and transformation (land-use change) on carbon sequestration dynamics in coastal seascapes across the land-sea interface. Objectives We explored the influence of landscape configuration and degradation of adjacent mangroves on the dynamics and fate of C-org in seagrass habitats. Methods Through predictive modelling, we assessed sedimentary C-org content, stocks and source composition in multiple seascapes (km-wide buffer zones) dominated by different seagrass communities in northwest Madagascar. The study area encompassed seagrass meadows adjacent to intact and deforested mangroves. Results The sedimentary C-org content was influenced by a combination of landscape metrics and inherent habitat plant- and sediment-properties. We found a strong land-to-sea gradient, likely driven by hydrodynamic forces, generating distinct patterns in sedimentary C-org levels in seagrass seascapes. There was higher C-org content and a mangrove signal in seagrass surface sediments closer to the deforested mangrove area, possibly due to an escalated export of C-org from deforested mangrove soils. Seascapes comprising large continuous seagrass meadows had higher sedimentary C-org levels in comparison to more diverse and patchy seascapes. Conclusion Our results emphasize the benefit to consider the influence of seascape configuration and connectivity to accurately assess C-org content in coastal habitats. Understanding spatial patterns of variability and what is driving the observed patterns is useful for identifying carbon sink hotspots and develop management prioritizations.
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| 2. |
- Bender, Anke, et al.
(författare)
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Imaging-sonar observations of salmonid interactions with a vertical axis instream turbine
- 2023
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Ingår i: Rivers Research and Applications. - : John Wiley & Sons. - 1535-1459 .- 1535-1467.
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Tidskriftsartikel (refereegranskat)abstract
- Anthropogenic activities and their influences on aquatic systems is an important topic, especially considering the growing interest in using the earth's resources in a sustainable way. One of those anthropogenic activities is the introduction of renewable technologies into the aquatic environment such as instream turbines. Environmental studies around those technologies are often still ongoing due to their novelty. During the spring of 2018, juvenile individuals of two salmonid species, Atlantic salmon and brown trout were released upstream a vertical axis instream turbine in the river Dal (Dalälven) in eastern Sweden. The aim of this study was to investigate the swimming behavior of the salmonids around a small-scale prototype vertical axis instream turbine. The swimming pattern and the possible response of avoiding the vertical axis instream turbine were documented with a multi beam sonar. A control area, next to the turbine, was used as reference. No consistent results were shown for trout as they were passing the control area with a statistically high variation, and specimens were rarely observed in proximity of the turbine, neither if the turbine was operating nor at stand still. Salmon clearly avoided the operating turbine, but did not avoid the turbine when it was at stand still, and was often observed swimming straight through the turbine area. These findings indicate that operating this type of instream turbine in a river affects the swimming behavior of Atlantic salmon but is unlikely to affect its migration paths. For brown trout, the statistical results are inconclusive, although data indicate a response of avoiding the turbine. The species are in little risk to suffer physical harm as no fish entered the rotating turbine, despite very turbid water conditions.
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| 3. |
- Göthberg, Maria, et al.
(författare)
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9 facteurs permettant la croissance bleue locale dans les pays en développement : Document d’orientation basé sur quatre études de référence
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Le présent document d’orientation résume les résultats de quatre études de référence explorant les conditions permettant de sortir les communautés côtières de la pauvretéLe document énumère neuf facteurs institutionnels et infra-structurels clés qui favorisent la croissance bleue locale à partir de l’utilisation des ressources marines dans les pays en développement.Le présent document d’orientation est le résultat de SwAM Ocean, le programme de coopération au développement international géré par l’Office suédois de gestion des ressources marines et aquatiques.
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| 4. |
- Göthberg, Maria, et al.
(författare)
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9 factores posibilitando el crecimiento azul a nivel local en los países en desarrollo : Informe de orientación política basado en cuatro estudios
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This policy brief presents nine key institutional and infrastructure factors that promotelocal blue growth from the use of marine resources in developing countries.The policy brief is provided by the Swedish Agency of Marine and Water Management,and is based on four background studies, all addressing the same question:What is needed for marine resources to actually generate local blue growth.Here, local blue growth refers to economic revenue and wellbeing in the local community from the sustainable use of ocean resources, such as fisheries, aquaculture, or tourism.
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| 5. |
- Göthberg, Maria, et al.
(författare)
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9 Factors enabling local blue growth in developing countries : Policy brief based on four background studies
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This policy brief presents nine key institutional and infrastructure factors that promotelocal blue growth from the use of marine resources in developing countries.The policy brief is provided by the Swedish Agency of Marine and Water Management,and is based on four background studies, all addressing the same question:What is needed for marine resources to actually generate local blue growth.Here, local blue growth refers to economic revenue and wellbeing in the local community from the sustainable use of ocean resources, such as fisheries, aquaculture, or tourism.
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| 6. |
- Göthberg, Maria, et al.
(författare)
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9 fatores que permitem o crescimento azul local em países em desenvolvimento : Resumo de políticas baseado em quatro estudos de base
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Este resumo de políticas agrega resultados de quatro estudos de base explorando as condições para tirar comunidades costeiras da pobreza.Este resumo alista nove principais fatores institucionais e de infraestrutura que promovem o crescimento azul local a partir do uso de recursos marinhos em países em desenvolvimento.Este resumo de políticas é resultado do SwAM Ocean, o programa internacional de cooperação para desenvolvimento operado pela Agência Sueca para o Gestão Marinha e da Águas
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| 7. |
- Göthberg, Maria, et al.
(författare)
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Mambo 9 yanayowezesha ukuaji wa bluu kwa wenyeji katika nchi zinazoendelea : Muhtasari wa sera kutokana na tafiti nne za usuli
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Muhtasari huu wa sera unawasilisha mambo tisa muhimu ya kitaasisi na miundombinu yanayochangia ukuaji wa bluu kwa wenyeji kutokana na matumizi ya rasilimali za baharini katika nchi zinazoendelea.Muhtasari wa sera umetolewa na Wakala wa Uswidi wa Usimamizi wa Bahari na Maji, na unategemea tafiti nne za usuli, zote zikishughulikia swali moja: ni nini kinachohitajika ili rasilimali za baharini zizalishe ukuaji wa bluu kwa wenyeji.Hapa, ukuaji wa bluu kwa wenyeji unarejelea mapato ya kiuchumi na ustawi katika jamii ya wenyeji kutokana na matumizi endelevu ya rasilimali za bahari, kama vile uvuvi, ufugaji wa samaki, au utalii.
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| 8. |
- Hammar, Linus, 1979, et al.
(författare)
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Cumulative impact assessment for ecosystem-based marine spatial planning
- 2020
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Ingår i: Science of the Total Environment. - : Elsevier BV. - 0048-9697 .- 1879-1026. ; 734
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Tidskriftsartikel (refereegranskat)abstract
- Claims for ocean space are growing while marine ecosystems suffer from centuries of insufficient care. Human pressures from runoff, atmospheric emissions, marine pollution, fishing, shipping, military operations and other activities wear on habitats and populations. Ecosystem-based marine spatial planning (MSP) has emerged worldwide as a strategic instrument for handling conflicting spatial claims among competing sectors and the environment. The twofold objective of both boosting the blue economy and protecting the environment is challenging in practice and marine planners need decision support. Cumulative Impact Assessment (CIA) was originally developed to provide an overview of the human imprint on the world's ocean ecosystems. We have now added a scenario component to the CIA model and used it within Swedish ecosystem-based MSP. This has allowed us to project environmental impacts for different planning alternatives throughout the planning process, strengthening the integration of environmental considerations into strategic decision-making. Every MSP decision may entail a local shift of environmental impact, causing positive or negative consequences for ecosystem components. The results from Swedish MSP in the North Sea and Baltic Sea illustrate that MSP certainly has the potential to lower net cumulative environmental impact, both locally and across sea basins, as long as environmental values are rated high and prevailing pressures derive from activities that are part of MSP. By synthesizing innumerous data into comprehensible decision support that informs marine planners of the likely environmental consequences of different options, CIA enables ecosystem-based MSP in practice.
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| 9. |
- Perry, Diana, et al.
(författare)
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Spatial risk assessment of global change impacts on Swedish seagrass ecosystems
- 2020
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Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 15:1
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Tidskriftsartikel (refereegranskat)abstract
- Improved knowledge on the risk in ecologically important habitats on a regional scale from multiple stressors is critical for managing functioning and resilient ecosystems. This risk assessment aimed to identify seagrass ecosystems in southern Sweden that will be exposed to a high degree of change from multiple global change stressors in mid- and endof- century climate change conditions. Risk scores were calculated from the expected overlap of three stressors: sea surface temperature increases, ocean acidification and wind driven turbid conditions. Three high-risk regions were identified as areas likely to be exposed to a particularly high level of pressure from the global stressors by the end of the century. In these areas it can be expected that there will be a large degree of stressor change from the current conditions. Given the ecological importance of seagrass meadows for maintaining high biodiversity and a range of other ecosystem services, these risk zones should be given high priority for incorporation into management strategies, which can attempt to reduce controllable stressors in order to mitigate the consequences of some of the impending pressures and manage for maintained ecosystem resilience.
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