Keywords

Saint Johns River Estuary, Zooplankton, Florida, Saint Johns River Estuary

Abstract

Zooplankton populations in the St. Johns River Estuary ranged from 3,000/m3 to 20,000/m3 during monthly collections from September, 1973 to August, 1974. Acartia tonsa Dana was the dominant organism throughout the year, except for spring blooms of Balanus sp. nauplii in the lower estuary and summer occurrences of Eubosmin tubins in the upper estuary. With these two exceptions, species composition, and community structure were similar throughout the estuary, year round. A patchy distribution of the zooplankton caused high replicate sample variation which made it difficult to detect small population variations. Salinity appeared to have the greatest effect on the distribution and abundance of zooplankton within the estuary. Population numbers were sufficiently low to suggest that zooplankton were not the major component of secondary production.

Notes

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Graduation Date

1979

Advisor

Osborne, John A.

Degree

Master of Science (M.S.)

College

College of Natural Sciences

Degree Program

Biological Sciences

Format

PDF

Pages

vi, 27 pages

Language

English

Rights

Public Domain

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0013250

Subjects

Saint Johns River Estuary (Fla.), Zooplankton -- Florida -- Saint Johns River Estuary

Collection (Linked data)

Retrospective Theses and Dissertations

Included in

Biology Commons

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