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Fig' 121, p' 249

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Narwhal. Bottlenose dolphin. Baleen whales. Blue whale. Fin whale. Bowhead whale. Right whale ... Charge fees for harvesting fish and shellfish from publicly ... – PowerPoint PPT presentation

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Title: Fig' 121, p' 249


1
Chapter 12
2
(No Transcript)
3
Fig. 12-1, p. 249
4
Fig. 12-2a, p. 251
5
(No Transcript)
6
Video Loggerhead Turtles
PLAY VIDEO
7
Trawler fishing
Fish farming in cage
Spotter airplane
Sonar
Purse-seine fishing
Trawl flap
Trawl lines
Fish school
Trawl bag
Drift-net fishing
Long line fishing
Buoy
Float
Lines with hooks
Deep sea aquaculture cage
Fish caught by gills
Fig. 12-A, p. 255
8
(No Transcript)
9
Fig. 12-2b, p. 251
10
Fig. 12-B, p. 256
11
Fig. 12-4, p. 256
12
Toothed whales
Sperm whale with squid
Killer whale
Narwhal
Bottlenose dolphin
Baleen whales
Blue whale
Fin whale
Bowhead whale
Right whale
Sei whale
Humpback whale
Gray whale
Minke whale
Fig. 12-5, p. 258
13
Video Humpback Whales
PLAY VIDEO
14
Fig. 12-6, p. 258
15
(No Transcript)
16
Solutions
Managing Fisheries
Fishery Regulations Set catch limits well below
the maximum sustainable yield Improve monitoring
and enforcement of regulations
Bycatch Use wide-meshed nets to allow escape of
smaller fish Use net escape devices for sea
birds and sea turtles Ban throwing edible and
marketable fish back into the sea
Economic Approaches Sharply reduce or eliminate
fishing subsidies Charge fees for harvesting
fish and shellfish from publicly owned offshore
waters Certify sustainable fisheries
Aquaculture Restrict coastal locations for fish
farms Control pollution more strictly Depend
more on herbivorous fish species
Protected Areas Establish no-fishing
areas Establish more marine protected
areas Rely more on integrated coastal management
Nonnative Invasions Kill organisms in ship
ballast water Filter organisms from ship ballast
water Dump ballast water far at sea and replace
with deep-sea water
Consumer Information Label sustainably harvested
fish Publicize overfished and threatened species
Fig. 12-7, p. 261
17
Fig. 12-8a, p. 263
18
Fig. 12-8b, p. 263
19
Fig. 12-9, p. 264
20
Fig. 12-10, p. 265
21
Fig. 12-11, p. 267
22
Video Salmons Swimming Upstream
PLAY VIDEO
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