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Title: Zooplankton feeding ecology and the experimental acidification of Little Rock Lake

Abstract

There is considerable variety in both the selective behavior of suspension feeders and the quality of food available to them. The author reviews this variability and incorporate it in a simple model of particle selection that quantifies the consequences of selective feeding under various feeding conditions. To evaluate the concept that selective feeding enhances fitness, the author tests the hypothesis than an herbivorous zooplankton selects food items that best support its reproduction. Investigations of zooplankton herbivory in experimentally acidified Little Rock Lake indicate that acidification from pH 6.2 to pH 5.2 has not directly impaired feeding rates, while effects on selective feeding behavior are evident. Assessment of the effects of lake acidification on large predatory zooplankton indicate that Chaoborus spp. and water mite populations remain as yet unaffected, while Epischura lacustris and Leptodora kindtii have both declined in the acidified basin. Methodological tests show that preservation of labelled zooplankton by rapid freezing on dry ice minimizes loss of {sup 14}C and {sup 32}P. {sup 14}C retention approximates 100%, while {sup 32}P retention is more variable.

Authors:
Publication Date:
Research Org.:
Wisconsin Univ., Madison, WI (USA)
OSTI Identifier:
5408002
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; LAKES; ACIDIFICATION; WATER POLLUTION; BIOLOGICAL INDICATORS; ZOOPLANKTON; SENSITIVITY; CARBON 14 COMPOUNDS; GENETIC VARIABILITY; PH VALUE; PHOSPHORUS 32; POPULATION DYNAMICS; TRACER TECHNIQUES; AQUATIC ORGANISMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BIOLOGICAL VARIABILITY; DAYS LIVING RADIOISOTOPES; ISOTOPE APPLICATIONS; ISOTOPES; LABELLED COMPOUNDS; LIGHT NUCLEI; NUCLEI; ODD-ODD NUCLEI; PHOSPHORUS ISOTOPES; PLANKTON; POLLUTION; RADIOISOTOPES; SURFACE WATERS; 520200* - Environment, Aquatic- Chemicals Monitoring & Transport- (-1989); 520101 - Environment, Aquatic- Basic Studies- Radiometric Techniques- (-1989)

Citation Formats

Sierszen, M E. Zooplankton feeding ecology and the experimental acidification of Little Rock Lake. United States: N. p., 1988. Web.
Sierszen, M E. Zooplankton feeding ecology and the experimental acidification of Little Rock Lake. United States.
Sierszen, M E. 1988. "Zooplankton feeding ecology and the experimental acidification of Little Rock Lake". United States.
@article{osti_5408002,
title = {Zooplankton feeding ecology and the experimental acidification of Little Rock Lake},
author = {Sierszen, M E},
abstractNote = {There is considerable variety in both the selective behavior of suspension feeders and the quality of food available to them. The author reviews this variability and incorporate it in a simple model of particle selection that quantifies the consequences of selective feeding under various feeding conditions. To evaluate the concept that selective feeding enhances fitness, the author tests the hypothesis than an herbivorous zooplankton selects food items that best support its reproduction. Investigations of zooplankton herbivory in experimentally acidified Little Rock Lake indicate that acidification from pH 6.2 to pH 5.2 has not directly impaired feeding rates, while effects on selective feeding behavior are evident. Assessment of the effects of lake acidification on large predatory zooplankton indicate that Chaoborus spp. and water mite populations remain as yet unaffected, while Epischura lacustris and Leptodora kindtii have both declined in the acidified basin. Methodological tests show that preservation of labelled zooplankton by rapid freezing on dry ice minimizes loss of {sup 14}C and {sup 32}P. {sup 14}C retention approximates 100%, while {sup 32}P retention is more variable.},
doi = {},
url = {https://www.osti.gov/biblio/5408002}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}

Thesis/Dissertation:
Other availability
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