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Where to rewild? A conceptual framework to spatially optimize ecological function.

Hugo Thierry1, Haldre Rogers1

  • 1Department of Ecology, Evolution, and Organismal Biology, Iowa State University, 251 Bessey Hall, Ames, IA 50011, USA.

Proceedings. Biological Sciences
|March 5, 2020
PubMed
Summary

Rewilding efforts can be improved by prioritizing locations where ecological functions are most needed. The Spatial Planning of Rewilding Effort (Spore) framework identifies key areas for restoring seed dispersal in Guam.

Keywords:
ecological functionrewildingseed dispersalspatially explicit model

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Area of Science:

  • Ecology
  • Conservation Biology
  • Spatial Planning

Background:

  • Rewilding aims to restore ecosystems and ecological functions through reintroductions or management.
  • Current rewilding site selection often prioritizes habitat suitability over functional need.
  • Ecological functions are critical for ecosystem health and resilience.

Purpose of the Study:

  • To develop a framework for identifying priority rewilding locations based on both habitat suitability and functional need.
  • To apply this framework to a case study in Guam, focusing on restoring seed dispersal function.
  • To improve the effectiveness of rewilding projects through strategic spatial planning.

Main Methods:

  • Developed the Spatial Planning of Rewilding Effort (Spore) framework.
  • Integrated habitat suitability and ecological function provisioning into site selection.
  • Used Guam as a case study, considering the loss of native seed dispersers due to invasive species.
  • Identified priority areas and management units for reintroduction of the Såli (Micronesian starling).

Main Results:

  • The Spore framework successfully identified priority areas for rewilding in Guam.
  • Three priority areas for restoring seed dispersal function were identified.
  • The study highlights the importance of considering landscape structure and species behavior in rewilding.
  • The Såli (Micronesian starling) was identified as a suitable candidate for restoring seed dispersal.

Conclusions:

  • The Spore framework provides a novel approach to optimize rewilding efforts.
  • Strategic site selection considering functional needs can enhance ecological restoration outcomes.
  • Restoring seed dispersal in Guam is crucial due to the impact of invasive species.
  • This approach can guide future rewilding projects for improved ecological success.