fishing food for human consumption – globally, fish is ~20% of animal protein consumed animal feed...
TRANSCRIPT
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
Global Fisheries…
Fisheries by Their Nature are Extractive; They Alter the Natural Environment
anthropogeniceffect
California Marine Landings
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 ($6.7M)
2004 landings by port
What Landings Mean
• Landings are the required reporting of
amounts of harvested fish
• Landings are a function of …
stock size, type of fishery, effort, technology,
harvest policy, market & reporting honesty
• Care must be taken in assessing time
histories of landings
What is Catch??
• Catch = (Catchability) (Effort) (Biomass)
Catchability is f(skill, technology,…)
Effort is hours, # trawls, … = f(profit, …)
Biomass is the stock abundance
• Profit to fishery = (price) (Catch) – (Costs)
Profit drives effort…
Price = f(market, …)
Costs = f(fuel, distance to port, biomass, …)
Market Squid
Lobster
Abalone
Rockfish
Sea Urchin
Shark
Commercial Fishery Landings in Santa Barbara
What we Fish?
• Pelagics
– sardine, anchovies, tuna, swordfish, …
• Groundfish
– “red snapper”, sea bass, rockfish, ...
• Invertebrates
– squid, sea urchin, abalone, lobster, Dungeness
crab,
• Macrophytes
– kelp
California Commercial Landings
CommercialLandings(M Lbs)
Data from http://www.dfg.ca.gov/mrd/status/
California Commercial Landings
CommercialLandings(M Lbs)
Data from http://www.dfg.ca.gov/mrd/status/
California Commercial Revenue
CommercialRevenues($M)
California Commercial Revenue
1999
California Commercial Revenue
1999
California Commercial Revenue
1999
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
California Recreational Fishery
1000’s trips(1998/99)
California Recreational Fishery
Landings(1000 fish)
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%)
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
Purse Seine
Anchovy Schooling
Squid Fishing at Night
Squid Fishing at Night
Red dots are squid boats
Purse Seines & Bycatch
Line Fishing
Long Lines
Stern Trawls
Otter Trawls
Gillnets
Gillnets
Urchin Diving
Urchin Diving
Fish Traps
Fish Traps
Crab Pots
Crab Pots
Lobster Trap
Lobster Trap
Lobster Trap
Kelp Harvester
Kelp Landings