Quiz 10 Flashcards
1
Q
Density dependance in fish population
A
- also called compensation or depensation
- difficult to measure
- probably a principal reason why fisheries fail
2
Q
Surplus production
A
-progeny in excess of replacement
3
Q
Ugly rumors
A
- S-R relationshi[s are 2 D
- nature works on averages
- nature wastes
- anthropogenic mortality behaves like natural mortality
4
Q
Ugly truths
A
- S-R relationships are not 2D
- nature does not work on averages
- nature does not waste
- anthropogenic sources of mortality do no behave like natural mortality
5
Q
Growth overfishing
A
- excessive harvesting of younger individuals in a population
- results in lower mean sizes of fish caught
6
Q
Recruitment overfishing
A
-excessive harvesting of the reproductive spawning stock such that there is a decline in reproduction and recruitment
7
Q
Bycatch
A
-teh capture of untargeted spp other than whats being targeted
8
Q
How can gathering of primary data in fisheries be flawed
A
- inaccurate estimates of catch by observers
- false reporting by fisheries
- failure to include accurate data in estimates
9
Q
Overcapitalization of fleeets
A
- driver of overfishing
- nations invest in building up their fishing fleet capacity`
10
Q
Super trawler
A
- factory ships
- can fish virtually anywhere
- catch is processed and flash-frozen on board
11
Q
Types of fisheries used for fishing
A
- subsistence
- commercial
- recreational
12
Q
How is sport fishing regulated
A
- creel limits
- slot limits and other size limits
- closures
13
Q
How is commercial harvesting regulated
A
- gear restrictions
- mesh size restrictions
- quotas
- closures
14
Q
ITQ
A
-Individual transferrable quota
15
Q
TAC
A
-total allowed catch
