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Posted Fri Aug 15 2014: from
BBC:
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Giant prehistoric Amazon fish 'locally extinct' due to overfishing http://apocadocs.com/s.pl?1408062622
A 10ft (3m) long fish which used to dominate the Amazon river has been fished to extinction in a number of areas, scientists have revealed.
Arapaima populations were found to be extinct in eight of the 41 communities studied, and extremely low on average....
Previously, bio economic theory predicted that fishing does not cause extinctions because fishermen inevitably move away from depleted resources.
Scientists, led by Dr Leandro Castello, from Virginia Tech, US, wanted to know how healthy the arapaima populations in the Lower Amazon region were.
They also wanted to find out whether these fisheries supported bio economic predictions, or the alternative fishing-down theory which predicts that large, high-value, easy-to-catch fish will be fished to extinction....
Almost a quarter of the fishermen in each community fished arapaima regardless of the population's status.
The research team say the results contradict conventional economic thinking and instead support "fishing-down" predictions.
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[Read more stories about:
hunting to extinction, sixth extinction, overfishing]
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'Doc Michael says:
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Bio-economics: The dismal bioscience.
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You'd think that the last 10,000 years of history, in which every single wild, easy-to-catch, high-value, large land animal might predict that "fishing-down theory" will be correct....
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