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The WWF living planet index for freshwater

The WWF living planet index for freshwater

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Uploaded 16 Feb 2012 by GRID-Arendal
Year: 2009
From collection: Vital Water Graphics 2
Author: GRID-Arendal
Description:
'The over-exploitation and mismanagement of fisheries, particularly when combined with other man-made stresses, can lead to the collapse of regional fish faunas. In many countries, aquaculture is rapidly increasing in response to declining natural fisheries, often exacerbating the degradation of inland and coastal ecosystems through habitat alteration, pollution and the introduction of alien species' (Revenga et al., 1998). The Freshwater Species Population Index measures the average change over time in the populations of some 194 species of freshwater birds, mammals, reptiles, amphibians and fish. Between 1970 and 1999, the Freshwater Species Population Index fell by nearly 50%, which is a very rapid decline in population indices. The harvest of freshwater fish is likely to increase either through capture fisheries or aquaculture (otherwise known as ’fish-farming’). In many developing countries, freshwater fish provide a significant contribution to the diets of local communities ...
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