Fish assemblages

By: , and 
Edited by: F. Richard Hauer and G.A. Lamberti

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Abstract

Methods to sample fishes in stream ecosystems and to analyze the raw data, focusing primarily on assemblage-level (all fish species combined) analyses, are presented in this chapter. We begin with guidance on sample site selection, permitting for fish collection, and information-gathering steps to be completed prior to conducting fieldwork. Basic sampling methods (visual surveying, electrofishing, and seining) are presented with specific instructions for estimating population sizes via visual, capture-recapture, and depletion surveys, in addition to new guidance on environmental DNA (eDNA) methods. Steps to process fish specimens in the field including the use of anesthesia and preservation of whole specimens or tissue samples (for genetic or stable isotope analysis) are also presented. Data analysis methods include characterization of size-structure within populations, estimation of species richness and diversity, and application of fish functional traits. We conclude with three advanced topics in assemblage-level analysis: multidimensional scaling (MDS), ecological networks, and loop analysis.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Fish assemblages
ISBN 9780124165588
DOI 10.1016/B978-0-12-416558-8.00016-0
Year Published 2017
Language English
Publisher Academic Press
Contributing office(s) Coop Res Unit Seattle
Description 33 p.
Larger Work Type Book
Larger Work Title Methods in stream ecology, 3rd Edition
First page 321
Last page 353