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Flashcards in Fisheries Deck (20)
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1
Q

how many fishers are there globally?

A

40million

- sole fishermen and those on big ships.

2
Q

where accounts for over 90% of global capture fishers?

A

Africa and Asia

3
Q

how many livelihoods depend on fish production

A

660-820 million

12%rely on fishing for their livelihood

4
Q

how many rely on fish on 20% of their animal protein?

A
  1. 1 billion

- we rely on fisheries and fish for nutrition worldwide

5
Q

what % of wild caught fish is reduced to fishmeal and fish oil and used for aquaculture feed and human consumption?

A

10%

6
Q

when did growth of aquaculture take off?

A

1990

7
Q

what % of fish for human consumption come from aquaculture?

A

50%

8
Q

do we know how much is being taken out of oceans?

consequences?

A

we don’t know the what actually is - thus can’t act on it in a sustainable way cut don’t know the whole picture.

9
Q

fishing methods and impacts?

A

beam trawlers.
nets dragged on bottom - disruptive and catch more than just fish.
scallop dredging etc

10
Q

Grand Banks cod fishery collapse

A
  • it supported many jobs
  • 40,000 jobs lost
  • small island and few alternatives
  • $3.1 billion invested by Canadian government to assist those affected
11
Q

maximum sustainable yield

A

if we know the rate fish can reproduce and other biological aspects then we can work out what can be done and how many fish we should fish
- hard to get accurate data tho

12
Q

ecosystem based management

A

seeks to broaden scope of traditional resource management so it considers a wider range of eco, envtl and human factors in the exploitation of resources.

13
Q

ecosystem based management aims

A
  • broaden stakeholder involvement
  • view ecosystem as a whole
  • evaluate multiple simultaneous drivers or pressures on ecosystems
  • emphasis on location
14
Q

e.g.s of fisheries management

A
  • licence
  • closed seasons
  • gear restrictions like mesh size
  • incentivised
  • catch share
    etc
15
Q

EU common fisheries policy

A
  • regionalisation
  • reduce envtl impact
  • sustainable
  • fisheries science
  • only works if you enforce the rules
16
Q

what % of UK quota is caught by one boat

A

25%

17
Q

landing obligation

A
  • undersized fish can’t be marketed
  • species on board counted against quota
  • prohibited species returned to sea
18
Q

does climate change affect fisheries

A

yes - with warmer temps fish will move to poles, so tropics lose out

19
Q

how ocean acidification affects fishing

A

ocean absorbs co2 - sea less alkaline - direct and indirect effects on marine life

20
Q

how storms affect fishing

A

storms effect ecology of oceans and who fishes where and how

some places will have more and some will have less storms