A pair of researchers, one with Canada's Nautical Crime Investigation Services, the other with the University of British Columbia, has conducted an assessment of fishery-related criminal offenses on the world's oceans. In ...
Overfishing, hunting and intensive agriculture and forestry can sometimes contribute to plants and animals becoming endangered. New research from Lund University in Sweden and University of Toronto can now show why this leads ...
Plants & Animals
Feb 10, 2021
2
55
The smallest plants and creatures in the ocean power an entire food web, including the fish that much of the world's population depend on for food, work and cultural identity.
Ecology
Jun 26, 2019
0
1
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.
Ecology
Dec 24, 2013
1
0
Urgent cuts in carbon emissions are needed if Caribbean coral reefs are to survive past the end of the century, scientists have warned.
Environment
Aug 14, 2013
7
0
Ocean acidification is damaging some marine species while others thrive, say scientists. An international team studied the effect of ocean acidification on plankton in the North Sea over the past forty years, to see what ...
Ecology
May 22, 2013
1
0
(Phys.org) —Nature is a lot more resilient than we sometimes think. A study by Rutgers marine scientists published recently in Science shows that species of fish that have been overfished for decades can often be brought ...
Ecology
Apr 18, 2013
1
0
Many factors—including climate change, overfishing or loss of food supply—can push a wild animal population to the brink of collapse. Ecologists have long sought ways to measure the risk of such a collapse, which could ...
Ecology
Apr 10, 2013
0
0
In the early 1940s, California fishermen hauled in a historic bounty of sardine at a time that set the backdrop for John Steinbeck's "Cannery Row" novel. But by the end of the decade the nets came up empty and the fishery ...
Environment
Mar 25, 2013
0
0
In a Perspectives article, "The Risks of Overfishing," published in the journal Science, Dr. Ellen K. Pikitch, executive director of the Institute for Ocean Conservation Science and professor at Stony Brook University, cautions ...
Ecology
Oct 25, 2012
2
0
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
