Connectivity in a network-scale model of aquatic population dynamics

A. Catherine Marcinkevage, E. E. Herricks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

America's waterways face multiple pressures that have the capabilities to alter the hydrologic connectivity that maintains aquatic population persistence throughout the watershed. The dynamic feedback of organism response can provide a real-time link between the habitat-influencing hydrologic processes operating within a watershed and the ecological processes that shape aquatic communities. This paper describes the incorporation of a connectivity component into the habitat-selection behavior of fish during high-flow conditions. The research is part of a larger effort that focuses on the development and use of a spatially-explicit individual-based model (IBM) in evaluating the long-term hydrologic effect of landscape change and management on aquatic communities. The model simulates the behavior of individual fish in their habitat selection process to analyze network dynamics in stream ecosystems in response to outside driving influences. The primary input to this model is streamflow and hydrologic connectivity related to watershed landscape characteristics. The results of this research show that connectivity does in fact contribute to the ability of aquatic communities to tolerate and recover from high-stress conditions. However, despite the recognition of the importance of connectivity in watershed science, it has not been directly incorporated into models of large-scale riverine systems. This work shows that connectivity, in addition to habitat quality, can influence species distribution within river reaches and affect population sustainability throughout the watershed area.

Original languageEnglish (US)
Title of host publicationWorld Environmental and Water Resources Congress 2008
Subtitle of host publicationAhupua'a - Proceedings of the World Environmental and Water Resources Congress 2008
DOIs
StatePublished - Dec 1 2008
EventWorld Environmental and Water Resources Congress 2008: Ahupua'a - Honolulu, HI, United States
Duration: May 12 2008May 16 2008

Publication series

NameWorld Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008
Volume316

Other

OtherWorld Environmental and Water Resources Congress 2008: Ahupua'a
Country/TerritoryUnited States
CityHonolulu, HI
Period5/12/085/16/08

Keywords

  • Aquatic habitats
  • Watersheds
  • Waterways

ASJC Scopus subject areas

  • Management, Monitoring, Policy and Law
  • Water Science and Technology
  • Pollution

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