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Fisher success and adaptation to plantation systems in Chile

Fisher success and adaptation to plantation systems in Chile . Tracy Van Holt East Carolina University Department of Geography & Institute for Coastal Science & Policy September 26, 2012 vanholtt@ecu.edu. Chilean Fishers 30 organizations Carlos Moreno, Universidad Austral

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Fisher success and adaptation to plantation systems in Chile

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  1. Fisher success and adaptation to plantation systems in Chile Tracy Van Holt East Carolina University Department of Geography & Institute for Coastal Science & Policy September 26, 2012 vanholtt@ecu.edu Chilean Fishers 30 organizations Carlos Moreno, Universidad Austral SandorMulsow, Universidad Austral Michael Binford, University of Florida H. Russel Bernard, University of Florida Tom Frazer, University of Florida Kenneth Portier, American Cancer Society Rodrigo Vergara, University of Florida Financial Support: NASA Earth System Science Fellow National Security Education Program Rotary Ambassadorial Scholarship

  2. Chilean Fisheries Management Loco (Concholepas concholepas)

  3. Ocean Land Zamorano 2003 Chilean Fisheries Management Recovery (ManagementAreas) Sustainable Harvest Crash 1970’s 1980’s 2000’s Consequences of Territorial User Rights Fisheries • 1. Locos available for harvest • 2. Restricted access & movement 3. Introduced new fishers (knowledge) 4. Loco biological condition & price varies Management Area (MA) Loco Territorial User Rights Fisheries MA

  4. Skipper Effect Theory • Some fishers catch more fish than others • Explained by experience and/or technology • Management implications overfishing Acheson (1977); Palsson 1994; Palsson & Durrenberger1982

  5. 1-What factors account for fisher success? 2-How are fishers adapting to environmental change?

  6. The fisheries Loco (Concholepasconcholepas) Congrio (Genypterus sp.) open access closed access

  7. Research Design: space for time substitution southern Chile● similar coastal shelf ● little el niño influence & upwelling ● similar benthic & fish fauna ● landscape change varies (Fernandez et al. 2000; Lancellotti & Vasquez 2000; Camus 2001)

  8. Forest Plantations Increased from 1985-2001Plantaciones forestales se incrementaron desde 1985 al 2001 Supervised classification of October 5, 1985 (Landsat TM, path 233, rows 87-89) and November 29, 2001 (Landsat ETM, path 233, rows 87-89) . Images were atmospherically and topographically corrected. The numbers in white boxes correspond to watersheds in study site.

  9. Chlorophyll-a concentration higher in nearshore influenced by plantations 10 mg/m3 Pl Most Plantations Here High Chlorophyll-a 0.1 mg/m3 SeaWiFS satellite images from winter (April to July) 2003/Imágenes satelitales SeaWiFS del invierno (Abril-Julio) del 2003

  10. Loco shells from plantation-influenced watersheds have more epibionts & endobionts. Barnacles Phoronids Polychaetes clean shell Bivalves Van Holt, T., et al. 2012. Global Change Biology. http://dx.doi.org/10.1111/j.1365-2486.2012.02674.x

  11. Northern Study Site Valdivia

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