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> Stop Asian Carp!, Grass carp could be a major problem!
Posted: Jul 11, 2021 - 12:12 pm


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Posted: Jul 13, 2021 - 06:43 am

Smolt Trout

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The Asian carp will never never able to take over great lakes, unless the water in Great lakes become full of plankton and phytoplankton (become a soup).
These fish cannot survive without their food: phytoplankton.
They can populate small lakes around Great lakes but will never be able to take over the main basins of the great lakes. Lake Erie with it shallow depth can be more in trouble, and area like Long Point with lots of vegetation yes, that can be destroyed by those fish, but the open basin it is not a proper habitat for Asian Carp.
You can see that with Regular/common carp as well. It thrives only in weedy, shallow, warm places with lots of vegetation and phytoplankton.
So yea it is not just gloom and doom.
A small lake like Scugog swamp can be overwhelm by this kind of fish.

There is a lot of phytoplankton in the great lakes already. Its the fuel that powers the entire food web in almost any body of water. The fact that the great lakes are becoming clearer means that competition over the remaining phytoplankton can become imbalanced more easily by non-native species which can out compete the native species upsetting the entire balance of the ecosystem, at its core. They don't need to take over the basins, if native baitfish which also feed on phytoplankton as fry (and even as they mature) cannot access their core food source the entire food web is disrupted.

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