Return to search

The Vertical Stratification of the Macrobenthos in the Brazos River, Texas

Quantification of stream macrobenthos populations has remained a perplexing problem in rivbrine ecology, despite numerous attempts at improvement. This is in part due to well documented variations in chemical and physical parameters locally and geographically, and resultant adapted macrobenthos populations. Southwood (1968) and Hynes (1970a) have reviewed the various sampling techniques developed'for the census of lotic macrobenthos populations. Needham and Usinger (1956), Chutter (1969), and others have pointed out the difficulty in obtaining adequate numbers of samples which will yield population estimates with desired statistical confidence, and still maintain some degree of sampling economy. Needham and Usinger (1956) and Gaufin et al. (1956) mentioned the "patchy" distribution of aquatic insect populations as the primary source of this difficulty. The concept of patchy distribution in insect populations was originally discussed by Andrewartha (1961). Attempts to improve confidence through improved sampling devices and techniques have led to development of numerous types of samplers. Cummins (1962) indicated that there were almost as many samplers as there were researchers.

Identiferoai:union.ndltd.org:unt.edu/info:ark/67531/metadc663733
Date12 1900
CreatorsPoole, Walton Charles
ContributorsStewart, Kenneth W., Pearson, William D., Redden, David R.
PublisherNorth Texas State University
Source SetsUniversity of North Texas
LanguageEnglish
Detected LanguageEnglish
TypeThesis or Dissertation
Formatvi, 51 leaves: ill., Text
CoverageUnited States - Texas
RightsPublic, Poole, Walton Charles, Copyright, Copyright is held by the author, unless otherwise noted. All rights

Page generated in 0.0018 seconds