Rotatoria of Florida

Ahlstrom, Elbert H.

doi:10.2307/3222102

Cited by 26 publications

(20 citation statements)

References 2 publications

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“…The contents of the entire chambers were counted at magnifications of 4OX to 200X as required. Sources used for identifications of zooplankton included Ahlstrom (1934), Brooks (1959), Edmondson (1959), Harring & Myers (1922, 1924, 1926, 1928, Pennak (1978), Voigt (1956), and Yeatman (1959).…”

Section: Methodsmentioning

confidence: 99%

Response of zooplankton to the reduction and elimination of submerged vegetation by grass carp and herbicide in four Florida lakes

1985

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Zooplankton populations were monitored monthly for a three year period in four Florida lakes. bach lake received an aquatic vegetation control program using grass carp (Ctenophar.~mgodon idella Val.) and herbicide, either alone or in combination. All aquatic vegetation was eliminated in the three lakes with grass carp; it was severely reduced and exhibited qualitative shifts in the lake treated with herbicide alone. Total number of recorded zooplankton species was reduced in each subsequent year as vegetation was eliminated, but mean density 1-I increased greatly. The overall trend in all lakes was toward increasing numbers of small filter-feeding herbivores, with a shift from copepod and copepod-cladoceran dominated to rotifer and small cladoceran dominated systems. It is suggested that these changes reflect primary plankton response to fluctuations in habitat, food base, and planktivore pressure resulting from gradual macrophyte alteration. Changes observed indicate apparent increases in eutrophy.

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Section: Methodsmentioning

confidence: 99%

Response of zooplankton to the reduction and elimination of submerged vegetation by grass carp and herbicide in four Florida lakes

1985

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“…Magnifications of 100, 200 and 400X were used for identification to species . Rotifers and microcrustaceans were identified using Ahlstrom (1934), Edmondson (1959), Pennak (1978) and Voigt (1956) . Contracted rotifers were identified by dissolving the lorica in 10% Clorox in a depression slide to extract the trophi .…”

Section: Methodsmentioning

confidence: 99%

Zooplankton densities in a Hydrilla infested lake

Schmitz¹,

Osborne

1984

Hydrobiologia

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The number of individuals and species of zooplankton were sampled concurrently with Hydrilla biomass and water quality for one year in a small, eutrophic central Florida lake . Throughout the study, rotifer species and individuals dominated the zooplankton . The abundance of the zooplankton tended to remain high when Hydrilla biomass was at its seasonal low during late winter and early spring . When hydrilla growth increased in the late spring and summer months causing a decrease in total alkalinity, specific conductivity, water color, turbidity, orthophosphate and chlorophyll a concentrations ; the abundance of the zooplankton declined .

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“…5a, b, c, d, e, f, g, h, i) I will attempt to resolve the question whether these rotifers are indeed the same animals (synonyms), by using published literature and recent personal observations . Ahlstrom (1934) created harringi species to accommodate the animals he considered sufficiently different from punctata, but that were previously grouped with them . First, he described the differences in anterior dorsal and ventral margins, he then discussed the shape of the second foot joint which is rounded in harringi, and elongated, narrow and subcylindric projecting beyond the end of the posterior segment in punctata .…”

Section: Notes On Selected Speciesmentioning

confidence: 99%

“…The single most significant separating feature mentioned by Ahlstrom (1934) is the size of what I call the `inner' points on the ventral plate ; harringi having pointed and overlapping points with the dorsal plate, while punctata has only low and rounded positions that could not be considered points at all .…”

Section: Notes On Selected Speciesmentioning

confidence: 99%

Some rotifers from coastal lakes of Brazil, with description of a new rotifer, Lepadella (Xenolepadella) curvicaudata n. sp.

Turner

1990

Hydrobiologia

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Four relatively rare, two common rotifers and one rotifer new to science are described from some coastal lakes near Rio de Janeiro, Brazil . Each rotifer is described in detail, and several are accompanied by illustrations and mensuration data . Geographic distribution and individual habitats of the rotifers are also discussed . Several species show a larger geographic distribution than previously known .

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Rotatoria of Florida

Cited by 26 publications

References 2 publications

Response of zooplankton to the reduction and elimination of submerged vegetation by grass carp and herbicide in four Florida lakes

Response of zooplankton to the reduction and elimination of submerged vegetation by grass carp and herbicide in four Florida lakes

Zooplankton densities in a Hydrilla infested lake

Some rotifers from coastal lakes of Brazil, with description of a new rotifer, Lepadella (Xenolepadella) curvicaudata n. sp.

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