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Updated: May 9, 2026
12:44
Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
Human impact on freshwater ecosystem services: a global perspective.
Walter K Dodds1, Joshuah S Perkin, Joseph E Gerken
1Division of Biology, Kansas State University , 116 Ackert Hall, Manhattan 66506, Kansas, USA. wkdodds@ksu.edu
Environmental Science & Technology
|July 27, 2013
Summary
Human activities significantly impact freshwater ecosystem services (ES) globally, diminishing their potential value. Even developed nations heavily utilize these resources, indicating widespread degradation linked to population growth.
Area of Science:
- Ecology
- Environmental Science
- Conservation Biology
Background:
- Human activities profoundly alter freshwater ecosystems worldwide.
- Freshwater ecosystems provide essential regulating, provisioning, and cultural services.
- Understanding the scale of human impact on these services is critical for sustainable management.
Purpose of the Study:
- To assess the global human impact on the potential value of six key freshwater ecosystem services (ES).
- To estimate the proportion of potential freshwater ES currently utilized globally.
- To develop a composite index quantifying human impact on freshwater ES.
Main Methods:
- Global assessment of human impact on freshwater ecosystem services.
- Valuation of six specific ES: biodiversity, disturbance regulation, commodities, greenhouse gases, water availability, and water quality.
- Calculation of a composite index for human impact using various valuation schemes.
Main Results:
- Humans have utilized approximately 4-20% (median 16%) of the potential global freshwater ES value.
- Significant utilization of potential ES value was observed across all countries, irrespective of development status.
- Factors such as high population growth rates correlate with increased degradation of freshwater ES.
Conclusions:
- Human activities have substantially diminished the potential value of global freshwater ecosystem services.
- The notion that developed countries have less impact on their ES is invalidated by current utilization patterns.
- Urgent global strategies are needed to mitigate human impact and restore freshwater ecosystem health.
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