Title

Benthic Macroinvertebrates of a Hydrilla Infested Central Florida Lake

Comments

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Abbreviated Journal Title

J. Freshw. Ecol.

Keywords

Ecology; Limnology

Abstract

Benthic macroinvertebrates and physicochemical parameters were monitored simnl taenously with hydrilla (Hydrilla verticillata Royle) biomass in a Central Florida lake. Twenty-seven of the 54 taxa of benthic macroinvertebrates collected were members of the family Quronomidae. Chironomids and oligochaetes numerically dominated the benthos, comprising 82% of the individuals collected. The greatest numbers of taxa and individuals were found during the winter when hydrilla biomass was low. Hydrilla biomass ranged from 0.382 kg/m2-FW in April, 1977 to 2.275 kg/m2-FW in October, 1977. Low numbers of macroinvertebrate taxa and individuals were collected from bottom sediments during sunnier and fall. Dissolved oxygen concentrations at the bottom were approximately 2.0 ppm during summer and fall and possibly limited benthic organisms. The annual means for the Shannon and Simpson indices for the benthos were 1.92 and 0.35, respectively.

Journal Title

Journal of Freshwater Ecology

Volume

1

Issue/Number

1

Publication Date

1-1-1981

Document Type

Article

Language

English

First Page

41

Last Page

49

WOS Identifier

WOS:A1981MQ04900004

ISSN

0270-5060

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