OVERFISHING. The practice of commercial and non-commercial fishing which depletes a fishery by catching so many adult fish that not enough remain to breed and replenish the population. Overfishing exceeds the carrying capacity of a fishery.
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The practice of commercial and non-commercial fishing which depletes a fishery by catching so many adult fish that not enough remain to breed and replenish the population. Overfishing exceeds the carrying capacity of a fishery.
Catching too many fish; fishing so much that the fish cannot sustain their population. The fish get fewer and fewer, until finally there are none to catch.
Fishing with a sufficiently high intensity to reduce the breeding stock levels to such an extent that they will no longer support a sufficient quantity of fish for sport or commercial harvest.
A dedicated portion of a species-specific total
allowable catch allocated
to a country, fishing-group
or an individual fishermen.
(Benthic Trawling) A fishing method that drags trawl nets along the sea floor. Non-selective destructive fishing method
with a large
and unregulated fishing respecting neither national boundaries nor international
attempts to manage
high seas resources.
Marine species thrown back after capture. Most discards
do not survive.
A fishing method involving towing a trawl net trough the water column. Can be performed by either a single or a combination of ships.
The largest yield (catch) that can be taken from a stock of a species over an indefinite period.
(A type of overfishing) Depletion of a population to a level where it no longer has the reproductive capacity to replenish itself. There are not enough adults to produce offspring.
The deliberate catching of less than the MSY to increase fish stocks and maintain a sustainable fisheries
Overcapacity: Worldwide, fishing fleets are two to three times as large as needed to take present day catches of fish and other marine species and as what our oceans can sustainably support. On a global scale we have enough fishing capacity to cover at least four Earth like planets.
Destructive Fishing Methods: many fishing methods are unsustainable in their own way. These methods have a large impact on the basic functioning of our marine ecosystems. These unselective fishing practices and gear cause tremendous destruction on non target species. Bycatch/discards and bottom trawling destruction are two examples of this.
To explain why overfishing is a problem we first have to get an idea on the scale of the problem.
Thus a total of almost 80% of the world's fisheries are fully- to over-exploited, depleted, or in a state of collapse. Worldwide about 90% of the stocks of large predatory fish stocks are already gone.