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Quantifying the conservation gains from shared access to linear infrastructure.

Claire A Runge1,2,3, Ayesha I T Tulloch4, Ascelin Gordon5

  • 1School of Earth and Environmental Sciences, The University of Queensland, Brisbane, QLD, 4072, Australia.

Conservation Biology : the Journal of the Society for Conservation Biology
|May 3, 2017
PubMed
Summary
This summary is machine-generated.

Sharing linear infrastructure, like roads and railways, significantly cuts biodiversity loss and costs. Fully shared development reduced biodiversity impacts by 76% and capital costs by 64% compared to independent development.

Keywords:
acceso abiertoacumulativocolaboracióncollaborationcumulative impactsevaluación de impactoimpact assessmentinfraestructurainfrastructurelicencia socialmineríaminingopen accesssocial license

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Area of Science:

  • Environmental Science
  • Conservation Biology
  • Infrastructure Planning

Background:

  • Linear infrastructure development (roads, railways) is a primary driver of global biodiversity loss.
  • Infrastructure sharing is a strategy to mitigate habitat loss from development.
  • The Upper Spencer Gulf Region of South Australia faces significant development impacts.

Purpose of the Study:

  • To quantify biodiversity impact and capital cost reductions from sharing mine-to-port linear infrastructure.
  • To compare biodiversity and cost outcomes across independent, restricted-access, and fully shared infrastructure scenarios.
  • To identify conditions under which infrastructure sharing minimizes development's biodiversity footprint.

Main Methods:

  • Mapped least-cost pathways for transport links under varying sharing scenarios.
  • Used expert-elicited data to estimate biodiversity impacts of linear infrastructure.
  • Calculated capital costs including construction, compensation, and transaction expenses.
  • Evaluated three scenarios: independent, restricted-access, and fully shared infrastructure.

Main Results:

  • Fully shared infrastructure reduced biodiversity impacts by 76% and capital costs by 64% compared to the independent scenario.
  • A restricted-access scenario yielded only modest biodiversity benefits, highlighting the need for inclusive sharing.
  • Significant variation in benefits existed among companies, influenced by access restrictions.

Conclusions:

  • Comprehensive sharing of linear infrastructure offers substantial biodiversity and economic benefits.
  • Policies promoting inclusive infrastructure sharing are crucial for maximizing conservation gains.
  • Restricting access by dominant companies limits the effectiveness of sharing initiatives.