Fishing

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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
anthropogenic effect
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California Marine Landings
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32LA (26.6M) 46Ventura (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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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
Commercial Landings (M Lbs)
Data from http//www.dfg.ca.gov/mrd/status/
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California Commercial Landings
Commercial Landings (M Lbs)
Data from http//www.dfg.ca.gov/mrd/status/
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California Commercial Revenue
Commercial Revenues (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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2007 CA Fisheries Summary

• Commercial landings (172,000 Mt) were up 13
  compared with 2006 but a 32 decline from 2000
• Ex-vessel values were nearly 120M, a decrease of
  8 from 2006
• Pacific sardine was biggest by landings (81,000
  Mt) but market squid by ex-vessel value (29.1M)
• Large landings also for northern anchovy, red sea
  urchin pacific mackerel
• Large ex-vessel values also for Dungeness crab,
  chinook salmon, urchin lobster
• 2007 CA Fishery Summary in reader

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40.5M
17M
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California Recreational Fishery
1000s 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