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Visualization of Productivity Zones Based on Nitrogen Mass Balance Model in Narragansett Bay, Rhode Island
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Published on: July 14, 2023

Coastal ecosystem-based management with nonlinear ecological functions and values.

Edward B Barbier1, Evamaria W Koch, Brian R Silliman

  • 1Department of Economics and Finance, University of Wyoming, Laramie, WY 82071, USA. ebarbier@uwyo.edu

Science (New York, N.Y.)
|January 19, 2008
PubMed
Summary

Coastal ecosystem services, like wave attenuation, are rarely linear with habitat size. This suggests integrating development and conservation, rather than stark preservation-versus-conversion choices, for optimal land use.

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Area of Science:

  • Ecology
  • Coastal Management
  • Environmental Science

Background:

  • Ecosystem services are often assumed to have linear responses to habitat size, simplifying conservation decisions.
  • This linear assumption can lead to binary choices: complete preservation or full conversion of coastal habitats.
  • Such dichotomous decisions may not reflect the complex reality of ecosystem service provision.

Purpose of the Study:

  • To challenge the assumption of linear relationships between habitat size and ecosystem services.
  • To investigate the nonlinear nature of wave attenuation in various coastal habitats.
  • To propose alternative land-use strategies that integrate conservation and development.

Main Methods:

  • Surveyed wave attenuation data from field studies across diverse coastal ecosystems (mangroves, salt marshes, seagrass beds, coral reefs, sand dunes).
  • Incorporated nonlinear wave attenuation data into economic valuation models for coastal protection.
  • Utilized case study data from mangrove ecosystems in Thailand.

Main Results:

  • Empirical data reveal that the relationship between habitat size and wave attenuation is typically nonlinear across multiple coastal ecosystems.
  • Estimating coastal protection value using nonlinear wave attenuation for mangroves in Thailand indicated benefits from integrated land-use approaches.
  • The study found that nonlinearities significantly alter the perceived value of coastal habitats.

Conclusions:

  • The assumption of linear responses of ecosystem services to habitat size is frequently inaccurate.
  • Nonlinear relationships necessitate a move away from 'all or none' preservation-versus-conversion decisions for coastal habitats.
  • An ecosystem-based management approach, integrating development and conservation, offers a more nuanced and potentially optimal strategy for coastal land use.