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Fisheries and Aquaculture - Coggle Diagram
Fisheries and Aquaculture
Industrial Fishing
Methods
Hook-and-line
Long-line fishing
Trolling (baited lines are pulled behind a ship)
Seine fishing (trapping fish in nets)
Twaling (Large net is dragged through water)
Bycatch: Non-target species of fishing
Threatens any species
Air-breathing species are vulnerable to the entrapment in fishing lines and nets
Thousands of sea turtles, sea birds, and marine mammals are victims of by catch
Aquaculture: The raising of fish for consumption
Methods
Net pen:
Problems
Depletion of the populations of smaller fish harvested
Ecosystem damage from the aquaculture ponds
The use of wild-caught fish as food for farmed fish
Ocean Food Chains Problems
As supplies of higher-tropic-level fish dwindle, we take fish lower on the food chain making it hard for the higher-tropic-level fish populations to recover
Alternatives to Traditional Aquaculture
The pens can be located farther apart and far enough from the coast to allow the open ocean to assimilate the waste produced
The pen can be submerged deeper to weather storms and raised up when it is time to harvest the fish
The use of Aquapods (which have a propeller system) that can be stocked with juvenile fish and motor through the ocean to their final destination to be harvested
Recirculating Aquaculture System (RAS)
Fish were spawned, hatched, and raised to adulthood in the lab; harvested and sold to area restaurants