fishing food for human consumption – globally, fish is ~20% of animal protein consumed animal feed...
TRANSCRIPT
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Fishing
• Food for human consumption
– Globally, fish is ~20% of animal protein
consumed
• Animal feed (both aquaculture & livestock)
• Natural products
– Inverts, fish & kelp
• Cultural identification
• Direct employment for 200 M people globally
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Global Fisheries…
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Fisheries by Their Nature are Extractive; They Alter the Natural Environment
anthropogeniceffect
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California Marine Landings
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Rank Port Millions of Pounds Millions of Dollars
1 New Bedford, MA 153.4 282.5
2 Dutch Harbor-Unalaska, AK 887.6 166.1
3 Kodiak, AK 337.2 95.8
4 Hampton Roads Area, VA 23.5 85.1
5 Cape May-Wildwood, NJ 74.6 68.4
6 Honolulu, HI 22.2 57.4
7 Dulac-Chauvin, LA 42.6 54.6
8 Naknek-King Salmon, AK 105.3 54.3
9 Seward, AK 60.5 52.2
10 Cordova, AK 111.2 46.5
11 Gloucester, MA 124.2 46.0
12 Brownsville-Port Isabel, TX 20.1 45.0
#32=LA ($26.6M) #46=Ventura ($16.6M) #71 SB ($6.7M)
2004 landings by port
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What Landings Mean
• Landings are the required reporting of
amounts of harvested fish
• Landings are a function of …
stock size, type of fishery, effort, technology,
harvest policy, market & reporting honesty
• Care must be taken in assessing time
histories of landings
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What is Catch??
• Catch = (Catchability) (Effort) (Biomass)
Catchability is f(skill, technology,…)
Effort is hours, # trawls, … = f(profit, …)
Biomass is the stock abundance
• Profit to fishery = (price) (Catch) – (Costs)
Profit drives effort…
Price = f(market, …)
Costs = f(fuel, distance to port, biomass, …)
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Market Squid
Lobster
Abalone
Rockfish
Sea Urchin
Shark
Commercial Fishery Landings in Santa Barbara
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What we Fish?
• Pelagics
– sardine, anchovies, tuna, swordfish, …
• Groundfish
– “red snapper”, sea bass, rockfish, ...
• Invertebrates
– squid, sea urchin, abalone, lobster, Dungeness
crab,
• Macrophytes
– kelp
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California Commercial Landings
CommercialLandings(M Lbs)
Data from http://www.dfg.ca.gov/mrd/status/
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California Commercial Landings
CommercialLandings(M Lbs)
Data from http://www.dfg.ca.gov/mrd/status/
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California Commercial Revenue
CommercialRevenues($M)
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California Commercial Revenue
1999
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California Commercial Revenue
1999
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California Commercial Revenue
1999
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2010 CA Fisheries Summary• Commercial landings (198,000 Mt) were up 23%
compared with 2009 but a 22% decline from 2000
• Ex-vessel values were nearly $175M, an increase of 56% from 2009
• Market squid was biggest by landings (~130,000 Mt) and ex-vessel value ($73.8M)
• Large landings also for pacific sardine, northern anchovy, red sea urchin & pacific mackerel
• Large ex-vessel values also for Dungeness crab, chinook salmon, urchin & lobster
2010 CA Fishery Summary
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California Recreational Fishery
1000’s trips(1998/99)
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California Recreational Fishery
Landings(1000 fish)
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What Recreational Fisheries Catch?
• Man-made structures– SoCal – tuna/mackerel (39%), croaker (19%)
– NoCal - silversides (31%), surfperch (27%)
• Beach– SoCal – surfperch (63%) NoCal – smelt (72%)
• CPFV– SoCal – rockfish (33%), sea bass (16%)
– NoCal - rockfish (92%)
• Private– SoCal – sea bass (23%), tuna/mackerel (17%)
– NoCal – rockfish (60%)
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How we Fish?• Pelagics & Squid
– purse seine, line, …
• Groundfish
– trawl nets, gill nets, dredge, fish traps, …
• Invertebrates
– hand collection, traps, trawl nets, …
• Macrophytes
– kelp mower
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Purse Seine
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Anchovy Schooling
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Squid Fishing at Night
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Squid Fishing at Night
Red dots are squid boats
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Purse Seines & Bycatch
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Line Fishing
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Long Lines
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Stern Trawls
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Otter Trawls
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Gillnets
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Gillnets
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Urchin Diving
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Urchin Diving
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Fish Traps
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Fish Traps
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Crab Pots
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Crab Pots
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Lobster Trap
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Lobster Trap
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Lobster Trap
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Kelp Harvester
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Kelp Landings