Oceans Mod 5

what is the group of harvested species

fishes

what is the technical term for fishes

finfish

what is the second largest group of harvested species

shellfish

Where are the best fishing grounds located

photic zone near the coast

where are the two places where the fishing grounds are especially rich

upwellings, wide continental shelf

Where are the two major areas that are rich in food resources

North Pole, Antarctic

What type of fish are use by industrial fisheries (fish meal, margarine, cosmetics, paints, pet food)

clupeoid

how are bottom dwellers caught

trawls

how are small schools of fish caught

purse seign

what are the most common type of clupeid fishes

anchovies, sardines, herrings, menhaden, shad

what are the largest group of commercial fishes species

tuna

How are tuna usually caught

longlines

What is overfishing

when fisheries catch the exceeded quanity that keeps the population from being able to reproduce to the population will not shrink

What is by-catch

capturing an untargeted species of fish

what are some practices fisheries use to try to preserve the fish populations

the only harvest during a certain time of the year, regulate the age, sex, and size of fish, only certain methods can be used, reserves where no harvesting can occur

what is an exclusive economic zone

an offshore area belonging exclusively to the geographically bordering country

in what system is the environment is completely controlled by the farmer

closed mariculture

What is seeding

the process of growing a species to a certain age then releasing them to enhance the natural population

Name 4 nonliving parts of the ocean

oil, energy, minerals, water

how can dissolved substances be removed from the ocean

distillation, reverse osmosis

small plankton eating fishes that travel in large schools

clupeoid fishes

bottom dwelling fish

gadoid fishes

resources that can naturally replace harvest numbers

renewable resources

resources that are not capable of replacing harvest numbers

nonrenewable resources

the number of individuals in a population that can be caught without reducing the size of the population or letting it grow

sustainable yeild

the farming and harvesting of marine aquaculture and brackish water organisms

mariculture

the process of removing salt from seawater

desalination