Trading-off fish biodiversity, food security, and hydropower in the Mekong River Basin

The Mekong River Basin, site of the biggest inland fishery in the world, is undergoing massive hydropower development. Planned dams will block critical fish migration routes between the river's downstream floodplains and upstream tributaries. Here we estimate fish biomass and biodiversity losses in numerous damming scenarios using a simple ecological model of fish migration. Our framework allows detailing trade-offs between dam locations, power production, and impacts on fish resources.

Redistribution of water use and benefits among hydropower affected communities in Lao PDR

In this paper, we assess how resettlement and changes in water access have altered livelihoods of local communities upstream of the Theun Hinboun Expansion Project in Lao PDR. Based on household surveys conducted both before and after resettlement, we estimate changes in water use and benefits among households of 4 resettled villages.

The importance of the fish resource in the Mekong River and examples of best practices

The Mekong is an exceptional river in many ways. In terms of fish biodiversity, it is the world’s second richest river after the Amazon (www.fishbase. org). With 6 to 18% of the global freshwater fish catch, it is also home to the largest freshwater fisheries in the world. The productive Mekong fisheries are essential to the food security of the 60 million people of the Lower Mekong Basin. Fish contributes 81% of the population’s protein intake in Cambodia and 48% in Laos. Mekong inland fisheries also provide employment to 1.6 of the 14 million Cambodians.

Functional aquatic ecosystems, inland fisheries and the Millennium Development Goals

Freshwater allocation in an environment of increasing demand and declining quality and availability is a major societal challenge. While biodiversity and the needs of local communities are often in congruence, the over-riding necessity of meeting national demands for power, food and, increasingly, mitigation of the hydrological effects of climate change, often supersedes these.

Effects of reservoirs on River Nile fisheries

The catch-effort relationship of the River Nile is Complicated by such factors as changes in water level and hydrology as well as spawning movements of the fish, which result in uneven distribution of the fish and fishing. The effects ofdam construction on the ecology of the fish fauna are considered, with particular reference to the effects of the Faraskour dam on the river fishery.

Fisheries potential of village dams in northern Ghana.

Results of a twelve-month assessment of the fisheries and aquaculture potential of small waterbodies (SWBs) in the West Gonja District of Northern Ghana are presented. The primary objectives of the project were to established whether the fisheries within the reservoir basins in the West Gonja and Nanumba Districts (Northern Region) could be enhanced and aquaculture associated with the SWBs could be viable.

Fisheries, nutrition and regional development pathways: reasserting food rights

As hydropower developments are accelerated, particularly along the the Mekong mainstream, debates are looming over how to address the loss of abundant fisheries that are so important to local livelihoods.The authors discuss what is at stake and what might be lost by considering how fisheries contribute to development that meets the needs of the people of Mekong. They emphasise the importance of food sovereignty as a local issue in the discourse about trade-offs in water decision-making.

Estimation of annual yield of fish by guild in the Lower Mekong Basin: report for the NIES/the WorldFish Center project: Scenario-based assessment of the potential effects of alternative dam construction schemes on freshwater fish diversity in the...

This consultation is a contribution to an assessment of the impacts of basin development on fish production in the Lower Mekong Basin (LMB). Fish of different species respond to development activities, in particular hydropower development, in different ways depending upon their migratory behaviour and their ability to adapt to and tolerate new environmental conditions.

Diagnostic study of the Volta Basin fisheries: Part 1 overview of the fisheries resources

The Basin Focal Project for the Volta (BFP-Volta) is a research project funded by the Challenge Programme on Water and Food (CPWF). Its aim is to provide an in-depth analysis of the basin through three main thematic issues: water-poverty, water availability/use and water productivity. The overall objective of the BFP-Volta is to contribute to the main goal of the CPWF, that is, to alleviate poverty through better management of water in order to enhance agricultural productivity and environment conservation.

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