摘要:

Studies were conducted in near-shore regions of the Clear-water River, Idaho, to determine benthic insect colonization rates. Dworshak Dam, located on the North Fork of the Clearwater River, subjects downstream shores to daily dewatering, thereby, influencing the benthic insect and algal communities. Continuously watered test and control substrates were sampled weekly to determine insect colonization rates. At least 47 days were required to establish near normal insect carrying capacity on test substrates.

ISSN:0270-5060    

DOI:10.1080/02705060.1981.9664035

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

A quantitative microplankton counting procedure is described which involves: 1) obtaining percent composition data by examining a drop of concentrate with a regular slide and coverslip, 2) obtaining cell density data for a selected organism using the Lackey drop count method, and 3) calculating density data for the remainder of the organisms from 1 and 2. Where detailed statistical analysis is not available or is not warranted, the procedure gives adequate precision and some saving of counting time.

ISSN:0270-5060    

DOI:10.1080/02705060.1981.9664036

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

ISSN:0270-5060    

DOI:10.1080/02705060.1981.9664037

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

ISSN:0270-5060    

DOI:10.1080/02705060.1981.9664024

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor