Climate change makes fish smaller ...

[recyclinage]

Climate change is making fish smaller and smaller

Fish in European waters have lost half their body mass in the space of a few decades due to climate change, according to a study by the French institute Cemagref published Monday in the United States.

Researchers from this public institute specializing in the sustainable management of water and land studied fish populations in European rivers, as well as in the North Sea and the Baltic Sea. Their conclusion, published in the journal "Proceedings of the National Academy of Sciences" is that different species of fish have lost an average of 50 pc of their body mass over the past 20 to 30 years and that the total mass of fish present in European waters fell by 60 pc. Smaller species tend to take a proportionately larger place in seas and rivers, explained the study's lead author, Martin Daufresne. (NLE)

msn news source

[Rabbit]

The real problem would not be that we fish the big fish,
thus causing a selection disadvantaging small fish?
It makes me think of the problem of fart of cows which would be
largely responsible for the greenhouse effect.
The motto of our civilization should be:
"If there is a problem it's not me it must be him"

http://www.cite-sciences.fr/francais/al ... &langue=fr

http://www.greenfacts.org/fr/perspectiv ... stemes.htm

[Former Oceano]

Smaller fish take a selective advantage in passing through the cracks, or those that become sexually mature more quickly breed faster than others that can be caught before mating.

[recyclinage]

Fish in European waters have lost half their body mass in the space of a few decades, ...

[Flytox]

Considering the way the fishermen / industrialists of the sea are able to manage the stocks ... I will not be surprised that by chance they make out of sandstone or by force an authorization to fish with smaller meshs of net. ..production requires ... short term policy requires

[recyclinage]

it's up to you not to let it go ...

[Christophe]

Frankly there I say no! The warming has good back ... then I plusoye you: I think that it is rather necessary to seek the reduction of the average size by the overexploitation. This is explained here: http://www.cite-sciences.fr/francais/al ... &langue=fr (thank you Rabbit)

How would global warming decrease the size of ALL species in the world? This is nonsense ... limit of scientific intoxication. A few decades ago, we weren't even talking about global warming ...

On the contrary, the warmer the sea, the more micro algae and plankton, the basis of the marine food chain ...

[recyclinage]

I am neither for nor against

but according to some rumor the earthworm has grown in size at Chernobil following the radiation

therefore ,...

for me this could be true as false

[Christophe]

what relationship between Cherno and warming?

[recyclinage]

modification of the ecosystem