Related topics: fish · climate change

West Coast sardine season called off amid population decline

Fisheries managers have decided to call off the West Coast sardine fishing season that starts in July because of rapidly dwindling numbers, hoping to save an iconic industry from the kind of collapse that hit in the 1940s ...

Endangered delicacy: Japan eel on species red list

(AP)—The Japanese eel, a popular summertime delicacy that has become prohibitively expensive due to overfishing, has been put on the international conservation "red list" in a move that may speed up Japan's push for industrial ...

The snowball effect of overfishing

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

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.

Indonesia, India named as biggest shark catchers

Indonesia and India on Tuesday were named as the world's biggest catchers of sharks in an EU-backed probe into implementing a new pact to protect seven threatened species of sharks and rays.

Evolutionary changes could aid fisheries

Evolutionary changes induced by fisheries may benefit the fishers, according to a new study published last week in the Proceedings of the National Academy of Sciences. But if fisheries are not well-managed, this potential ...

WWF urges Romania, Bulgaria to protect wild sturgeon

Conservationist group WWF on Tuesday urged Romania and Bulgaria, home to the last viable wild sturgeon populations in the European Union, to protect the species, threatened by illegal fishing and caviar trade.

page 1 from 8

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