To connect or not to connect – floods, fisheries and livelihoods in the Lower Rufiji floodplain lakes, Tanzania.

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dc.contributor.authorHamerlynck, Oliver
dc.contributor.authorDuvail, Stéphanie
dc.contributor.authorVandepitte, leen
dc.contributor.authorKindinda, kassim
dc.contributor.authorNyingi, Dorothy W.
dc.contributor.authorPaul, Jean-Luc
dc.contributor.authorYanda, Pius Z.
dc.contributor.authorMwakalinga, Aggrey B.
dc.contributor.authorMgaya, Yunus D.
dc.contributor.authorSnoeks, Jos
dc.date.accessioned2016-03-02T06:49:06Z
dc.date.available2016-03-02T06:49:06Z
dc.date.issued2011
dc.description.abstractt For seven years, village-based recorders monitored fish catches and water levels in seven floodplainassociated lakes of the Lower Rufiji, Tanzania. The lakes differ in the number of days and volume of inflows from the river, and thus provide a natural experiment to explore the links between catch composition, income per hour of fishing (IPHF) and hydrological connectivity, and to analyse the response of the users. The fishers adapt their fishing mode and equipment to achieve a rather constant IPHF of between 0.2 and 0.8 US$/fisher/hour. In situations of low connectivity, during a series of drought years, the less well-connected lakes lost many species and became a virtual monoculture of Oreochromis urolepis. Only in one extreme case was average fish size significantly reduced, indicating a high fishing pressure. Catch was therefore highly resilient to shifts toward illegal, non-selective and active fishing techniques. Fish diversity and lake productivity were quickly re-established when the larger lakes reconnected. The potential impacts of changes in the flood hydrograph (through dams, increased abstraction or climate/land-use changes) are assessed, and management options discusseden_US
dc.identifier.citationHamerlynck, O., Duvail, S., Vandepitte, L., Kindinda, K., Nyingi, D.W., Paul, J.-L., Yanda, P.Z., Mwakalinga, A.B., Mgaya, Y.D. and Snoeks, J., 2011. To connect or not to connect? Floods, fisheries and livelihoods in the Lower Rufiji floodplain lakes, Tanzania. Hydrological Sciences Journal, 56 (8), 1436–1451.en_US
dc.identifier.other10.1080/02626667.2011.630002
dc.identifier.urihttp://hdl.handle.net/123456789/521
dc.language.isoenen_US
dc.subjectfloodsen_US
dc.subjectfloodplainsen_US
dc.subjecttropical fisheriesen_US
dc.subjectecosystem servicesen_US
dc.subjectlivelihoodsen_US
dc.subjectparticipatory monitoringen_US
dc.titleTo connect or not to connect – floods, fisheries and livelihoods in the Lower Rufiji floodplain lakes, Tanzania.en_US
dc.typeOtheren_US
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