Chapter 12 Fisheries Conservation Flashcards Preview

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Flashcards in Chapter 12 Fisheries Conservation Deck (16)
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1

Fish that begin their life in freshwater, travel to and mature in the sea, and return to their native stream to reproduce and die. i.e. pacific salmon.

Andronomous fish

2

Captured marine organisms that are not the target species. (Tuna fishers accidentally netting a dolphin)

Bycatch

3

the bycatch that are thrown back for non target fish, endangered, juvenile, wrong size, inferior quality, or surplus to quotas

Discards

4

live their entire life in freshwater sometimes confined to a lake tributary or stream

resident fish

5

temperature
water depth and velocity
turbidity
dissolved oxygen
salinity
substrate
cover
food

habitat requirements for fish

6

cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye,

turbidity

7

the natural environment in which an organism lives, or the surface or medium on which an organism grows or is attached.

substrate

8

storms
soil mass
animal activities
natural barriers
vegetation
predation
winterkill

natural limitations for fish

9

pollution
temperature
predation
dams
resource extraction
channelization

human interference for fish

10

fishery technique where gears are left in place for a period before retrieval. They may either attract fish using bait, or may passively wait for a fish to swim into a net or trap. Gill nets, longlines, traps and pots.

passive fisheries

11

fishery technique where mobile gears are moved in order to catch fish by trapping or encirclement.
These gears can be divided into those which are towed along the seabed

active fisheries

12

is the amount of fish harvested that: (a) will provide the greatest overall benefit to the national economy, particularly with respect to ... (b) is prescribed as such on the basis of the maximum sustainable yield from the fishery

optimum yield

13

to fish (an area) excessively; to exhaust the supply of usable fish in (certain waters

overfishing

14

captive breeding
stocking
translocation
removal
oxygen control
catch and release
seasons
limits

inland fisheries sustainability

15

harvest taxes
quota system
marine protection areas
aquaculture

ocean fishing sustainability

16

the cultivation of aquatic animals and plants, especially fish, shellfish, and seaweed, in natural or controlled marine or freshwater environments; underwater agriculture.

aquaculture