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A Video Surveillance System to Monitor Breeding Colonies of Common Terns (Sterna Hirundo)
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Modeling marine protected areas for threatened eiders in a climatically changing Bering Sea.

James R Lovvorn1, Jacqueline M Grebmeier, Lee W Cooper

  • 1Department of Zoology, University of Wyoming, Laramie, Wyoming 82071, USA. lovvorn@zoology.siu.edu

Ecological Applications : a Publication of the Ecological Society of America
|September 23, 2009
PubMed
Summary
This summary is machine-generated.

Climate change impacts Spectacled Eider habitats. Fixed protected areas are insufficient for this threatened species, requiring adaptive strategies for long-term survival.

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Area of Science:

  • Ecology
  • Conservation Biology
  • Climate Change Science

Background:

  • Climate change alters species' habitats and human interactions, necessitating adaptive conservation strategies.
  • Protected areas for threatened species face challenges due to shifting geographic ranges and resource availability.
  • The Spectacled Eider (Somateria fischeri), a federally threatened species, winters in the Bering Sea pack ice, facing threats from reduced ice cover and prey availability.

Purpose of the Study:

  • To assess long-term habitat changes affecting the Spectacled Eider.
  • To identify critical resource thresholds for species persistence under changing environmental conditions.
  • To evaluate the adequacy of fixed protected areas for wide-ranging species facing climate-induced habitat shifts.

Main Methods:

  • Linked long-term data (1970-2001) on benthic prey, sea ice, and weather.
  • Utilized a spatially explicit simulation model of eider energy balance.
  • Integrated field, laboratory, and remote-sensing data.

Main Results:

  • Viable eider habitat areas significantly shifted between 1970-1974 and 1993-1994.
  • Reduced ice cover may decrease the area with adequate prey to meet eider energy needs.
  • Fixed protected areas based on current conditions may be too small or inflexible for long-term species survival.

Conclusions:

  • Long-term shifts in habitat viability necessitate flexible conservation strategies beyond fixed protected areas.
  • Understanding natural prey disturbance patterns and human impact allocation is crucial for effective conservation.
  • Adaptive management strategies are essential for ensuring the persistence of wide-ranging species like the Spectacled Eider in a changing climate.