| Registro completo |
| Provedor de dados: |
Ecology and Society
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| País: |
Canada
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| Título: |
Coupled human and natural system dynamics as key to the sustainability of Lake Victoria’s ecosystem services
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| Autores: |
Downing, Andrea S.; Stockholm Resilience Centre, Stockholm University, Sweden; Aquatic Ecology and Water Quality Management group, Wageningen University, Netherlands; Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands ; andrea.downing@su.se
van Nes, Egbert H.; Aquatic Ecology and Water Quality Management group, Wageningen University, Netherlands ; Egbert.vannes@wur.nl
Balirwa, John S.; National Fisheries Resources Research Institute (NaFIRRI), Jinja, Uganda; jbalirwa@yahoo.com
Beuving, Joost; Department of Cultural Anthropology and Development Studies, Faculty of Social Sciences, Radboud University, Nijmegen, Netherlands ; joostbeuving@gmail.com
Bwathondi, P.O.J.; University of Dar es Salaam, College of Natural and Applied Sciences, Department of Aquatic Sciences and Fisheries, Dar es Salaam, Tanzania ; bwathondi@yahoo.co.uk
Chapman, Lauren J.; Department of Biology, McGill University, Montreal, Canada; lauren.chapman@mcgill.ca
Cornelissen, Ilse J. M.; Aquaculture & Fisheries Group, Wageningen University, Netherlands; Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands; ilsecornelissen@hotmail.com
Cowx, Iain G.; Hull International Fisheries Institute, University of Hull, United Kingdom; I.G.Cowx@hull.ac.uk
Goudswaard, Kees P. C.; Institute for Marine Resource and Ecosystem Studies (IMARES), Wageningen University, Yerseke, Netherlands; kees.goudswaard@wur.nl
Hecky, Robert E.; Biology Department and Large Lakes Observatory, University of Minnesota-Duluth, USA; rehecky@gmail.com
Janse, Jan H.; Netherlands Environmental Assessment Agency (PBL), Bilthoven, Netherlands; Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands; JH.Janse@rivm.nl
Janssen, Annette B. G.; Aquatic Ecology and Water Quality Management group, Wageningen University, Netherlands; Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands; A.Janssen@nioo.knaw.nl
Kaufman, Les; Boston University Marine Program, Biology Department, Boston University, USA ; lesk@bu.edu
Kishe-Machumu, Mary A.; Tanzania Fisheries Research Institute (TAFIRI), Dar es Salaam, Tanzania; mkishe@yahoo.com
Kolding, Jeppe; Department of Biology, University of Bergen, Norway; jeppe.kolding@bio.uib.no
Ligtvoet, Willem; Netherlands Environmental Assessment Agency (PBL), The Hague, Netherlands; Willem.Ligtvoet@pbl.nl
Mbabazi, Dismas; National Fisheries Resources Research Institute (NaFIRRI), Jinja, Uganda; mbabazidismas@yahoo.com
Medard, Modesta; Department of Sociology of Development and Change. Social Science Group, Wageningen University, Netherlands ; modesta.medard@wur.nl
Mkumbo, Oliva C.; Lake Victoria Fisheries Organisation, Jinja, Uganda; ocmkumbo@lvfo.org
Mlaponi, Enock; Tanzania Fisheries Research Institute (TAFIRI), Mwanza, Tanzania; emlaponi@yahoo.com
Munyaho, Antony T.; National Fisheries Resources Research Institute (NaFIRRI), Jinja, Uganda; ataabum@yahoo.com
Nagelkerke, Leopold A. J.; Aquaculture & Fisheries Group, Wageningen University, Netherlands; leo.nagelkerke@wur.nl
Ogutu-Ohwayo, Richard; National Fisheries Resources Research Institute (NaFIRRI), Jinja, Uganda; ogutuohwayo@yahoo.com
Ojwang, William O.; Kenya Marine and Fisheries Research Institute (KMFRI), Kisumu, Kenya; w_ojwang@yahoo.com
Peter, Happy K.; Aquaculture & Fisheries Group, Wageningen University, Netherlands; Happy.Peter@wur.nl
Schindler, Daniel E.; Aquatic & Fishery Sciences/Department of Biology, University of Washington, USA; deschind@uw.edu
Seehausen, Ole; Eawag, Kastanienbaum, Switzerland; Ole.Seehausen@eawag.ch
Sharpe, Diana; Smithsonian Tropical Research Institute, Panama City, Panama; Department of Biology, McGill University, Montreal, Canada; diana.sharpe@gmail.com
Silsbe, Greg M.; Royal Netherlands Institute for Sea Research, Yerseke, Netherlands; Greg.Silsbe@nioz.nl
Sitoki, Lewis; The Technical University of Kenya, Nairobi, Kenya; Sitoki@hotmail.com
Tumwebaze, Rhoda; National Fisheries Resources Research Institute (NaFIRRI), Jinja, Uganda; t60rhoda@gmail.com
Tweddle, Denis; South African Institute for Aquatic Biodiversity, Grahamstown, South Africa; D.Tweddle@saiab.ac.za
van de Wolfshaar, Karen E.; Institute for Marine Resource and Ecosystem Studies (IMARES), Wageningen University, Ijmuiden, Netherlands; karen.vandewolfshaar@wur.nl
van Dijk, Han; Department of Sociology of Development and Change. Social Science Group, Wageningen University, Netherlands ; han.vandijk@wur.nl
van Donk, Ellen; Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands; E.vandonk@nioo.knaw.nl
van Rijssel, Jacco C.; Institute of Biology, University of Leiden, Netherlands; Naturalis Biodiversity Center, Leiden, Netherlands; Eawag, Kastanienbaum, Switzerland; j.c.van.rijssel@biology.leidenuniv.nl
van Zwieten, Paul A. M.; Aquaculture & Fisheries Group, Wageningen University, Netherlands; paul.vanzwieten@wur.nl
Wanink, Jan; Institute of Biology, University of Leiden, Netherlands; Koeman en Bijkerk bv, Ecological Research and Consultancy, Haren, Netherlands; j.h.wanink@koemanenbijkerk.nl
Witte, F.; Institute of Biology, University of Leiden, Netherlands; Naturalis Biodiversity Center, Leiden, Netherlands;
Mooij, Wolf M.; Aquatic Ecology and Water Quality Management group, Wageningen University, Netherlands; Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands ; w.mooij@nioo.knaw.nl
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| Data: |
2014-11-18
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| Ano: |
2014
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| Palavras-chave: |
Eutrophication
Feedbacks
Fisheries
Lake Victoria
Model
Multidisciplinary social-ecological system
Sustainability
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| Resumo: |
East Africa’s Lake Victoria provides resources and services to millions of people on the lake’s shores and abroad. In particular, the lake’s fisheries are an important source of protein, employment, and international economic connections for the whole region. Nonetheless, stock dynamics are poorly understood and currently unpredictable. Furthermore, fishery dynamics are intricately connected to other supporting services of the lake as well as to lakeshore societies and economies. Much research has been carried out piecemeal on different aspects of Lake Victoria’s system; e.g., societies, biodiversity, fisheries, and eutrophication. However, to disentangle drivers and dynamics of change in this complex system, we need to put these pieces together and analyze the system as a whole. We did so by first building a qualitative model of the lake’s social-ecological system. We then investigated the model system through a qualitative loop analysis, and finally examined effects of changes on the system state and structure. The model and its contextual analysis allowed us to investigate system-wide chain reactions resulting from disturbances. Importantly, we built a tool that can be used to analyze the cascading effects of management options and establish the requirements for their success. We found that high connectedness of the system at the exploitation level, through fisheries having multiple target stocks, can increase the stocks’ vulnerability to exploitation but reduce society’s vulnerability to variability in individual stocks. We describe how there are multiple pathways to any change in the system, which makes it difficult to identify the root cause of changes but also broadens the management toolkit. Also, we illustrate how nutrient enrichment is not a self-regulating process, and that explicit management is necessary to halt or reverse eutrophication. This model is simple and usable to assess system-wide effects of management policies, and can serve as a paving stone for future quantitative analyses of system dynamics at local scales.
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| Tipo: |
Peer-Reviewed Reports
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| Idioma: |
Inglês
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| Identificador: |
vol19/iss4/art31/
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| Editor: |
Resilience Alliance
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| Formato: |
text/html application/pdf
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| Fonte: |
Ecology and Society; Vol. 19, No. 4 (2014)
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