NJ Fisheries in a Global Context
Olaf Jensen
Rutgers University
Outline
• Global marine fisheries
• Status and trends
• Black Sea Bass
What I mean by a “fishery”
What I mean by a “fishery”
• A social-ecological system organized around the harvest of wild
marine/aquatic fish or invert...
What I mean by a “fishery”
• A social-ecological system organized around the harvest of wild
marine/aquatic fish or invert...
World fishery landings peaked in the 1980s
FAO 2006
World fishery landings peaked in the 1980s
FAO 2006
…it seems unlikely that the potential sustained yield of fish to man i...
Illegal, Unreported, Unregulated (IUU) catches
and discards are large
Fishing effort and demand for
seafood continue to grow
• 4 million fishing vessels
• landings worth 84.9 billion USD
• 2.6...
Fishing effort and demand for
seafood continue to grow
• 4 million fishing vessels
• landings worth 84.9 billion USD
• 2.6...
OLDTARGET
NEWTARGET
Impacts of fishing
Catch
OLDTARGET
NEWTARGET
Impacts of fishing
Catch
Biomass
OLDTARGET
NEWTARGET
Impacts of fishing
Catch
Biomass
Collapsed
Species
Worm et al. (2006) Science 314:787-790
ALL FISH GONE
BY 2048
Worm et al. (2006) Science 314:787-790
Source: Time magazine, November 2006
Outline
• Global marine fisheries
• Status and trends
• Black Sea Bass
What are the current status and
trends of fisheries around the world?
A global stock assessment
database
Stock status
worldwide
Worm et al. 2009 Science
Stock status
worldwide
Emergency Room
Worm et al. 2009 Science
Stock status
worldwide
Emergency Room
Recovery Room
Worm et al. 2009 Science
Stock status
worldwide
Emergency Room
Recovery Room
Worm et al. 2009 Science
Stock status
worldwide
Emergency Room
Recovery Room
Worm et al. 2009 Science
Stock status
worldwide
• 166 stocks
• 63% below
MSY target
• 65% fished at
rates below
UMSY
Worm et al. 2009 Science
Stock status – selected regions
updated – 241
assessments
New Zealand Canada
EuropeUnited States
Ricard et al. 2012
Declining fishing rate and signs of
rebuilding
• 7 of 10 regions at or below
fishing rate that yields MSY
• Higher fishing...
A New Consensus
• Overfishing has depleted a significant
number of stocks and ecosystems
• Solution: reduce fishing pressu...
Impacts of fishing
Catch
Biomass
Collapsed
Species
Impacts of fishing
Catch
Biomass
Collapsed
Species
OLDTARGET
Impacts of fishing
Catch
Biomass
Collapsed
Species
NEWTARGET
OLDTARGET
Outline
• Global marine fisheries
• Status and trends
• Black Sea Bass
New Jersey Fisheries
• Commercial landings in NJ worth about
$150 million per year
• Cape May – Wildwood is the 8th
most
i...
New Jersey Fisheries
Black sea bass
protogynous hermaphrodites
Female Male
Sex ratio
Sex ratio
Sex ratio
1 2 3 4 5
Rutgers BSB study
Black sea bass tagging
Moser and
Shepherd
2009
Black sea bass tagging
Moser and
Shepherd
2009
How you
can help
Acknowledgments
• NCEAS working group participants
• Dan Ricard, Coilin Minto, Julia Baum, Malin
Pinsky (database developm...
Questions?
East Coast MARE Ocean Lecture Jan 19, 2012 - NJ Fisheries in a Global Context
East Coast MARE Ocean Lecture Jan 19, 2012 - NJ Fisheries in a Global Context
East Coast MARE Ocean Lecture Jan 19, 2012 - NJ Fisheries in a Global Context
East Coast MARE Ocean Lecture Jan 19, 2012 - NJ Fisheries in a Global Context
East Coast MARE Ocean Lecture Jan 19, 2012 - NJ Fisheries in a Global Context
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East Coast MARE Ocean Lecture Jan 19, 2012 - NJ Fisheries in a Global Context

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East Coast MARE hosted an Ocean Lecture & Educators' Night for teachers focused on bringing ocean literacy to students in New Jersey. Dr. Olaf Jensen of Rutgers University presented the scientific lecture on January 19, 2012. For more information visit http://coseenow.net/mare/opportunities-resources/ocean-lecture-educators-night/.

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  • Source: Trevor Branch
  • Source: Trevor Branch
  • Trevor Branch (change y-axis)
  • Slide from Boris and Ray
  • Point three: Contrast how MSA structure is important (timelines and targets) – not present for example in Canada
  • East Coast MARE Ocean Lecture Jan 19, 2012 - NJ Fisheries in a Global Context

    1. 1. NJ Fisheries in a Global Context Olaf Jensen Rutgers University
    2. 2. Outline • Global marine fisheries • Status and trends • Black Sea Bass
    3. 3. What I mean by a “fishery”
    4. 4. What I mean by a “fishery” • A social-ecological system organized around the harvest of wild marine/aquatic fish or invertebrates for use by humans. Top 10 world fisheries (weight of landings) Management Fishermen Fish “stocks”
    5. 5. What I mean by a “fishery” • A social-ecological system organized around the harvest of wild marine/aquatic fish or invertebrates for use by humans. Top 10 world fisheries (weight of landings) FAO 2006 Management Fishermen Fish “stocks”
    6. 6. World fishery landings peaked in the 1980s FAO 2006
    7. 7. World fishery landings peaked in the 1980s FAO 2006 …it seems unlikely that the potential sustained yield of fish to man is appreciably greater than 100 million tons. - Ryther 1969, Science
    8. 8. Illegal, Unreported, Unregulated (IUU) catches and discards are large
    9. 9. Fishing effort and demand for seafood continue to grow • 4 million fishing vessels • landings worth 84.9 billion USD • 2.6 billion people rely on fish for >20% of their animal protein (1/3 of global population)
    10. 10. Fishing effort and demand for seafood continue to grow • 4 million fishing vessels • landings worth 84.9 billion USD • 2.6 billion people rely on fish for >20% of their animal protein (1/3 of global population) FAO 2006
    11. 11. OLDTARGET NEWTARGET Impacts of fishing Catch
    12. 12. OLDTARGET NEWTARGET Impacts of fishing Catch Biomass
    13. 13. OLDTARGET NEWTARGET Impacts of fishing Catch Biomass Collapsed Species
    14. 14. Worm et al. (2006) Science 314:787-790
    15. 15. ALL FISH GONE BY 2048 Worm et al. (2006) Science 314:787-790
    16. 16. Source: Time magazine, November 2006
    17. 17. Outline • Global marine fisheries • Status and trends • Black Sea Bass
    18. 18. What are the current status and trends of fisheries around the world?
    19. 19. A global stock assessment database
    20. 20. Stock status worldwide Worm et al. 2009 Science
    21. 21. Stock status worldwide Emergency Room Worm et al. 2009 Science
    22. 22. Stock status worldwide Emergency Room Recovery Room Worm et al. 2009 Science
    23. 23. Stock status worldwide Emergency Room Recovery Room Worm et al. 2009 Science
    24. 24. Stock status worldwide Emergency Room Recovery Room Worm et al. 2009 Science
    25. 25. Stock status worldwide • 166 stocks • 63% below MSY target • 65% fished at rates below UMSY Worm et al. 2009 Science
    26. 26. Stock status – selected regions updated – 241 assessments New Zealand Canada EuropeUnited States Ricard et al. 2012
    27. 27. Declining fishing rate and signs of rebuilding • 7 of 10 regions at or below fishing rate that yields MSY • Higher fishing rates in Europe • Biomass still low in most regions • Signs of rebuilding in: – California – Northeast U.S.? – Iceland
    28. 28. A New Consensus • Overfishing has depleted a significant number of stocks and ecosystems • Solution: reduce fishing pressure to achieve better economic and ecological outcomes • New focus on restoring biodiversity, rebuilding fisheries • High seas and less developed countries remain great challenges
    29. 29. Impacts of fishing Catch Biomass Collapsed Species
    30. 30. Impacts of fishing Catch Biomass Collapsed Species OLDTARGET
    31. 31. Impacts of fishing Catch Biomass Collapsed Species NEWTARGET OLDTARGET
    32. 32. Outline • Global marine fisheries • Status and trends • Black Sea Bass
    33. 33. New Jersey Fisheries • Commercial landings in NJ worth about $150 million per year • Cape May – Wildwood is the 8th most important fishing port in the U.S. (by value) • Recreational anglers: 1.2 million in NJ • Recreational fishing impact: $1.6 billion annually
    34. 34. New Jersey Fisheries
    35. 35. Black sea bass protogynous hermaphrodites Female Male
    36. 36. Sex ratio
    37. 37. Sex ratio
    38. 38. Sex ratio 1 2 3 4 5
    39. 39. Rutgers BSB study
    40. 40. Black sea bass tagging Moser and Shepherd 2009
    41. 41. Black sea bass tagging Moser and Shepherd 2009
    42. 42. How you can help
    43. 43. Acknowledgments • NCEAS working group participants • Dan Ricard, Coilin Minto, Julia Baum, Malin Pinsky (database development and analysis) • Boris Worm, Liz Neeley, Trevor Branch (presentation slides) • Rainer Froese (FishBase) • Reg Watson (Sea Around Us Project) • Database contributors • NCEAS and David H. Smith Conservation Research Fellowship
    44. 44. Questions?

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