Related topics: fish ยท climate change

World's coral reefs could be gone by 2050: study

The world's coral reefs could be wiped out by 2050 unless urgent action is taken to stop threats posed to the "rainforests of the sea" by everything from overfishing to climate change, a report warned.

Community power 'can rescue failing fish stocks'

Traditional community-run marine reserves and fisheries can play a big role in helping to restore and maintain fish numbers in stressed developing nations' coral reef fisheries.

West Coast fishermen embark on new wave of fishing

(AP) -- The West Coast groundfish fleet has struggled to stay afloat during major cutbacks to reverse long-standing problems with overfishing and to protect the seafloor from damage caused by bottom trawling gear.

Study highlights snowball effect of overfishing

Florida State University researchers have spearheaded a major review of fisheries data that examines the domino effect that occurs when too many fish are harvested from one habitat.

Human impacts on the marine ecosystems of Antarctica

A team of scientists in the United Kingdom and the United States has warned that the native fauna and unique ecology of the Southern Ocean, the vast body of water that surrounds the Antarctic continent, is under threat from ...

page 1 from 9

Overfishing

Overfishing occurs when fishing activities reduce fish stocks below an acceptable level. This can occur in any body of water from a pond to the oceans.

Ultimately overfishing can lead to resource depletion in cases of subsidised fishing, low biological growth rates and critical low biomass levels (e.g. by critical depensation growth properties). For example, overfishing of sharks has led to the upset of entire marine ecosystems.

The ability of a fishery to recover after overfishing depends on whether the ecosystem conditions are suitable for the recovery. Dramatic changes in species composition can result in an ecosystem shift, where other equilibrium energy flows involve species compositions other than those that had been present before. For example, once trout have been overfished, carp might take over in a way that makes it impossible for the trout to re-establish a breeding population.

This text uses material from Wikipedia, licensed under CC BY-SA