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Related Experiment Videos

Linking terrestrial and marine conservation planning and threats analysis.

Heather Tallis1, Zach Ferdaña, Elizabeth Gray

  • 1Biology Department, University of Washington, Box 351800, Seattle, WA 98195, USA. htallis@stanford.edu

Conservation Biology : the Journal of the Society for Conservation Biology
|February 8, 2008
PubMed
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Integrating terrestrial and marine conservation planning is crucial. A novel threats assessment revealed that cross-system threats significantly alter conservation priorities and site selection for the Pacific Northwest coast.

Area of Science:

  • Ecology
  • Conservation Science
  • Environmental Management

Background:

  • Terrestrial inputs can damage marine ecosystems, as evidenced by the Gulf of Mexico dead zone.
  • Effective marine conservation requires explicit alignment with terrestrial conservation planning to address cross-system threats.
  • Existing conservation planning often treats terrestrial and marine systems separately, potentially overlooking critical interdependencies.

Purpose of the Study:

  • To integrate conservation planning for terrestrial and marine systems using a novel threats assessment.
  • To evaluate the impact of cross-system threats on conservation priorities in the Pacific Northwest coast ecoregion.
  • To identify areas suitable for preservation or restoration through integrated terrestrial-marine management.

Main Methods:

Related Experiment Videos

  • Developed and applied a novel threats assessment incorporating 5 cross-system threats.
  • Utilized site-prioritization exercises for the Pacific Northwest coast ecoregion.
  • Employed 2 proxies of freshwater influence to link land-based threats to marine sites, validated with models and field data.
  • Compared conservation priorities using MARXAN (Marine And Riverine eXpertise Network Analysis) under scenarios with no threats, single-system threats, and both single- and cross-system threats.

Main Results:

  • Including cross-system threats significantly altered the conservation threat landscape.
  • A plan considering only single-system threats identified 323 sites (161,500 ha) at risk from cross-system threats.
  • The location of priority conservation sites shifted when cross-system threats were incorporated into the analysis.

Conclusions:

  • Explicitly integrated decision-making and management actions are essential for terrestrial and marine ecosystems.
  • Findings provide quantitative support for the necessity of a unified approach to conservation planning.
  • Identified key areas for preservation and restoration through integrated management strategies.