1 / 51

Fishing

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 ….

shaun
Download Presentation

Fishing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 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

  2. GlobalFisheries…

  3. Fisheries by Their Nature are Extractive; They Alter the Natural Environment anthropogenic effect

  4. California Marine Landings

  5. #32=LA ($26.6M) #46=Ventura ($16.6M) #71 SB ($6.7M) 2004 landings by port

  6. 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

  7. 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, …)

  8. Shark Abalone Sea Urchin Lobster Rockfish Market Squid Commercial Fishery Landings in Santa Barbara

  9. What we Fish? • Pelagics • sardine, anchovies, tuna, swordfish, … • Groundfish • “red snapper”, sea bass, rockfish, ... • Invertebrates • squid, sea urchin, abalone, lobster, Dungeness crab, • Macrophytes • kelp

  10. California Commercial Landings Commercial Landings (M Lbs) Data from http://www.dfg.ca.gov/mrd/status/

  11. California Commercial Landings Commercial Landings (M Lbs) Data from http://www.dfg.ca.gov/mrd/status/

  12. California Commercial Revenue Commercial Revenues ($M)

  13. California Commercial Revenue 1999

  14. California Commercial Revenue 1999

  15. California Commercial Revenue 1999

  16. 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

  17. California Recreational Fishery 1000’s trips (1998/99)

  18. California Recreational Fishery Landings (1000 fish)

  19. 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%)

  20. 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

  21. Purse Seine

  22. Anchovy Schooling

  23. Squid Fishing at Night

  24. Squid Fishing at Night Red dots are squid boats

  25. Purse Seines & Bycatch

  26. Line Fishing

  27. Long Lines

  28. Stern Trawls

  29. Otter Trawls

  30. Gillnets

  31. Gillnets

  32. Urchin Diving

  33. Urchin Diving

  34. Fish Traps

  35. Fish Traps

  36. Crab Pots

  37. Crab Pots

  38. Lobster Trap

  39. Lobster Trap

  40. Lobster Trap

  41. Kelp Harvester

More Related