Investigating the causes of fish community change in the Dahan River (Taiwan) using an autecology matrix

Jian-Ping Suen, Edwin E. Herricks

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Recent work in river restoration and water resources management has seen the need to change the focus of analysis from reach to watershed scales to better define causes of watershed impairment. However, comprehensive investigations at a watershed scale are hindered by difficulties in using reach data that was collected for analysis at small spatial and short temporal scales. This is especially true for ecological and biological data. The approach assembles assessment and monitoring data and uses an autecology matrix to identify the changes in environmental and ecological conditions that may be associated with community change over spatial and temporal scales appropriate for ecosystem analysis in watersheds. The analysis uses a weight-of-evidence approach based on the percent of the community associated with a matrix factor. We have used the autecology matrix to examine historical fish community data from the Dahan River, Taiwan. The results show that the method provides an improved understanding of historical influences on fish community structure and supports a process-based analysis of community change over watershed scales and historic time periods. Further the method helps identify habitat requirements for the fish communities at each sampling site, supporting management and ecological restoration objectives.

Original languageEnglish
Pages (from-to)317-330
Number of pages14
JournalHydrobiologia
Volume568
Issue number1
DOIs
Publication statusPublished - 2006 Sep 1

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autecology
population ecology
Taiwan
watershed
rivers
matrix
fish
river
weight-of-evidence
ecological restoration
water management
community structure
fish communities
analysis
ecosystems
monitoring
sampling
habitat
habitats
methodology

All Science Journal Classification (ASJC) codes

  • Aquatic Science

Cite this

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Investigating the causes of fish community change in the Dahan River (Taiwan) using an autecology matrix. / Suen, Jian-Ping; Herricks, Edwin E.

In: Hydrobiologia, Vol. 568, No. 1, 01.09.2006, p. 317-330.

Research output: Contribution to journalArticle

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