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Ecological Insights and Fish Population Trends from the California Collaborative Fisheries Research Program 1. Conduct scientifically sound research to better inform resource managers 2. Collaborate with local fishing communities to collect data about nearshore fish assemblages 3. Provide rigorous baseline and monitoring data for the evaluation of marine protected area (MPA) performance 4. Better understand nearshore fish stocks and ecosystems 5. Educate the general public about marine fisheries, conservation, stewardship and research 6. Test data-poor fishery models that use differences between MPA and reference (REF) sites to set fisheries control rules Richard M. Starr 1,3 , Dean E. Wendt 2 , Cheryl L. Barnes 1,3 , and Corina I. Marks 1* 1 Moss Landing Marine Laboratories 2 CalPoly San Luis Obispo 3 California Sea Grant * presenting author Objectives From 2007 to 2013, CCFRP scientists worked with volunteer anglers to collect fisheries-independent data onboard charter boats off of central California (Photos 1 through 4). To gather information on species compositions, lengths, and catch rates of nearshore fishes in and around local MPAs, we have: - Conducted 244 days of standardized hook-and-line surveys - Utilized over 6,813 volunteer hours from 717 different anglers - Worked aboard 12 fishing vessels with 20 different skippers - Caught and released 46,855 fishes, of which 33,418 were tagged - Collected data from 48 species Methods Acknowledgements For more information and project updates, like us on facebook or visit us at http://seagrant.mlml.calstate.edu/research/ccfrp/ 20 15 10 5 0 2013 2012 2011 2010 2009 2008 2007 20 15 10 5 0 2013 2012 2011 2010 2009 2008 2007 Point Buchon Piedras Blancas Point Lobos Año Nuevo REF MPA Catch-Per-Angler-Hour Results & Conclusions 2007-2013 • Greater than 50% of the catch at Año Nuevo was comprised of Black and Blue Rockfish. • Greater than 50% of the catch at Point Lobos, Piedras Blancas, and Point Buchon was comprised of Blue and Gopher Rockfish. Relationships of catch rates inside & outside MPAs are used to determine whether there are MPA effects as well as changes in oceanographic conditions in the region. Point Buchon 12 8 4 0 2013 2012 2011 2010 2009 2008 2007 REF MPA Point Lobos Blue Rockfish Sebastes mystinus This project has been made possible by funding and/or support by California Sea Grant, the Ocean Protection Council, National Oceanic and Atmospheric Administration, Santa Monica Seafood’s Responsible Sourcing Vendor Partner Program, California Department of Fish and Wildlife, the captains and crews of F/Vs Admiral, Caroline, Chubasco, Fiesta, Huli Cat, New Captain Pete, Pacific Horizon, Patriot, Princess, Queen of Hearts, Rita G, Salty Lady, and Tigerfish, as well as our many volunteers. Photo 1. Science crew and volunteer angler with a Vermilion Rockfish caught offshore from Año Nuevo. Photo 4. Volunteer angler using standardized fishing gear to catch nearshore species at Point Lobos. Photo 3. Science crew tagging an Olive Rockfish and recording the species, length, physical condition, and the latitude and longitude of where the fish was caught. Inset: Tagged Canary Rockfish. ★ p < 0.05 (MPA greater catch) ★★ p < 0.001 (MPA greater catch) ✪ p < 0.05 (REF greater catch) ✪✪ p < 0.001 (REF greater catch) Species compositions differed among central California MPAs. Catch was higher for many species inside MPAs as compared to reference sites. Proportion of Individuals Length at 50% Maturity 1.00 .80 .60 .40 .20 .00 Black Rockfish Blue Rockfish Canary Rockfish China Rockfish Copper Rockfish Gopher Rockfish Kelp Rockfish Lingcod Olive Rockfish Vermilion Rockfish Yellowtail Rockfish MPA REF MPA REF MPA MPA REF A larger proportion of mature Blue, Copper, Olive, & Vermilion Rockfish as well as Lingcod were caught inside MPAs Changes in catch rates over time, all species combined Because the decrease in relative abundance inside and outside the MPA track each other, we can hypothesize that overall environmental conditions (e.g. food availability) influenced Blue Rockfish in the region of Point Lobos. A wooden v-board is used to measure all fishes to the nearest centimeter. Piedras Blancas n = 8,796 n = 9,233 Point Buchon n = 13,891 Point Lobos Monterey Santa Cruz Morro Bay Monterey Bay ¯ Año Nuevo n = 14,933 Photo 2. Devices used to descend fish with barotrauma: 1.Weighted crate 2. SeaQualizer - releases fish at a set depth. 1 2
Transcript of Ecological Insights and Fish Population Trends from the ......sh sh sh sh sh sh sh Lingcod sh sh sh...
Ecological Insights and Fish Population Trends from the
California Collaborative Fisheries Research Program
1. Conduct scientifically sound research to better inform resource
managers
2. Collaborate with local fishing communities to collect data about
nearshore fish assemblages
3. Provide rigorous baseline and monitoring data for the evaluation of
marine protected area (MPA) performance
4. Better understand nearshore fish stocks and ecosystems
5. Educate the general public about marine fisheries, conservation,
stewardship and research
6. Test data-poor fishery models that use differences between
MPA and reference (REF) sites to set fisheries control rules
Richard M. Starr 1,3, Dean E. Wendt 2, Cheryl L. Barnes 1,3, and Corina I. Marks1* 1 Moss Landing Marine Laboratories 2 CalPoly San Luis Obispo 3California Sea Grant * presenting author
Objectives
From 2007 to 2013, CCFRP scientists worked with volunteer anglers to
collect fisheries-independent data onboard charter boats off of central
California (Photos 1 through 4). To gather information on species
compositions, lengths, and catch rates of nearshore fishes in and
around local MPAs, we have:
- Conducted 244 days of standardized hook-and-line surveys
- Utilized over 6,813 volunteer hours from 717 different anglers
- Worked aboard 12 fishing vessels with 20 different skippers
- Caught and released 46,855 fishes, of which 33,418 were tagged
- Collected data from 48 species
Methods
Acknowledgements
4
For more information and project updates, like us on facebook or visit us at http://seagrant.mlml.calstate.edu/research/ccfrp/
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Point BuchonPiedras Blancas
Point LobosAño Nuevo
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All Species Combined
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Results & Conclusions 2007-2013
• Greater than 50% of the catch at Año
Nuevo was comprised of Black and
Blue Rockfish.
• Greater than 50% of the catch at Point
Lobos, Piedras Blancas, and Point
Buchon was comprised of Blue and
Gopher Rockfish.
Relationships of catch rates inside & outside MPAs are used to determine whether there are MPA
effects as well as changes in oceanographic conditions in the region.
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Point BuchonPiedras Blancas
Point LobosAño Nuevo
REFMPA
Blue Rockfish
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Point BuchonPiedras Blancas
Point LobosAño Nuevo
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Blue Rockfish
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Point BuchonPiedras Blancas
Point LobosAño Nuevo
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Blue Rockfish
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Point BuchonPiedras Blancas
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Copper Rockfish
Page 1
Point Lobos
Blue Rockfish Sebastes mystinus
This project has been made possible by funding and/or support by California Sea
Grant, the Ocean Protection Council, National Oceanic and Atmospheric
Administration, Santa Monica Seafood’s Responsible Sourcing Vendor Partner
Program, California Department of Fish and Wildlife, the captains and crews of
F/Vs Admiral, Caroline, Chubasco, Fiesta, Huli Cat, New Captain Pete, Pacific
Horizon, Patriot, Princess, Queen of Hearts, Rita G, Salty Lady, and Tigerfish, as well
as our many volunteers.
Photo 1. Science crew and volunteer
angler with a Vermilion Rockfish caught
offshore from Año Nuevo.
Photo 4. Volunteer angler
using standardized fishing gear
to catch nearshore species at
Point Lobos.
Photo 3. Science crew tagging an Olive Rockfish and
recording the species, length, physical condition, and
the latitude and longitude of where the fish was caught.
Inset: Tagged Canary Rockfish.
★ p < 0.05 (MPA greater catch)
★★ p < 0.001 (MPA greater catch)
✪ p < 0.05 (REF greater catch)
✪✪ p < 0.001 (REF greater catch)
Species compositions differed among central California MPAs.
Catch was higher for many species inside
MPAs as compared to reference sites.
Proportion of Individuals Length at 50% Maturity
1.00.80.60.40.20.00
Black Rockfish
Blue Rockfish
Canary Rockfish
China Rockfish
Copper Rockfish
Gopher Rockfish
Kelp Rockfish
Lingcod
Olive Rockfish
Vermilion Rockfish
Yellowtail Rockfish
All Years (2007 to 2013) Combined
MPAREF
Page 1
Proportion of Individuals Length at 50% Maturity
1.00.80.60.40.20.00
Black Rockfish
Blue Rockfish
Canary Rockfish
China Rockfish
Copper Rockfish
Gopher Rockfish
Kelp Rockfish
Lingcod
Olive Rockfish
Vermilion Rockfish
Yellowtail Rockfish
All Years (2007 to 2013) Combined
MPAREF
Page 1
Proportion of Individuals Length at 50% Maturity
1.00.80.60.40.20.00
Black Rockfish
Blue Rockfish
Canary Rockfish
China Rockfish
Copper Rockfish
Gopher Rockfish
Kelp Rockfish
Lingcod
Olive Rockfish
Vermilion Rockfish
Yellowtail Rockfish
All Years (2007 to 2013) Combined
MPAREF
Page 1
MPA
REF
Mea
n Le
ngth
(cm
)
60
40
20
0Yellowtail Rockfish
Vermilion Rockfish
Olive Rockfish
LingcodKelp Rockfish
Gopher Rockfish
Copper Rockfish
China Rockfish
Canary Rockfish
Blue Rockfish
Black Rockfish
Reference Site Point Lobos Ecologial Reserve (est 1973)
Page 1
A larger proportion of mature Blue, Copper, Olive, & Vermilion Rockfish as well as Lingcod were
caught inside MPAs
Changes in catch rates over time, all species combined
Because the decrease in relative
abundance inside and outside the
MPA track each other, we can
hypothesize that overall
environmental conditions (e.g. food
availability) influenced Blue Rockfish
in the region of Point Lobos.
A wooden v-board is used to measure all fishes to the
nearest centimeter.
Piedras Blancas
n = 8,796
n = 9,233
Point Buchon
n = 13,891
Point Lobos Monterey
Santa Cruz
Morro
Bay
Monterey
Bay
¯Año Nuevo
n = 14,933
Photo 2. Devices used to descend fish with
barotrauma: 1.Weighted crate
2. SeaQualizer - releases fish at a set depth.
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