[OANNES Foro] Want Sustainable Fishing? Keep Only Small Fish, And Let The Big Ones Go

[Milthon Lujan]

Estimados Amigos

Les adjunto articulo de lectura obligatoria.

Saludos


Want Sustainable Fishing? Keep Only Small Fish, And Let The Big Ones Go

ScienceDaily (Dec. 1, 2008) — Scientists at the University of Toronto
analysed Canadian fisheries data to determine the effect of the "keep the
large ones" policy that is typical of fisheries. What they found is that the
effect of this policy is an unsustainable fishery.

In fact, the opposite policy (keep the small young ones and throw back the
large old ones) would result in a more sustainable fishery. In short -- a
big fish in the water is worth two in the net.

Put simply, a fish population will produce more young -- and therefore
sustain more fishing -- if it is made up of big, old fish.

The team of scientists, led by Paul Venturelli, a graduate student in the
Department of Ecology and Evolutionary Biology, used a simple population
model, as well as evaluating data from 25 marine fish species. They also
tailored their methods to allow for other possible causes for the results,
such as the effect of climate.

Finding ways to replenish fishery stocks and improve management provides
both ecological and financial benefits.

The research is published in the Proceedings of the Royal Society B.

Fuente: http://www.sciencedaily.com/releases/2008/11/081130210013.htm



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