Frequency, Abundance and Distribution of Zoosporic Organisms from Las CañAs Stream (Buenos Aires, Argentina)

Zoosporic organisms are common inhabitants of aquatic environments; however there are few ecological studies made for Argentinean streams. In this contribution the taxonomic composition of zoosporic organisms from a stream and their abundance, frequency and diversity on cellulosic baits were analyze...

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Bibliographic Details
Published in:Mycologia 2008-09, Vol.100 (5), p.691-700
Main Authors: Marano, Agostina V., Barrera, Marcelo D., Steciow, Mónica M., Donadelli, Jorge L., Saparrat, Mario C. N.
Format: Article
Language:English
Subjects:
Argentina
Biochemical oxygen demand
Biodiversity
Chemical oxygen demand
Chytridiomycota
Ecology
Fresh Water - microbiology
Fungi
Fungi - chemistry
Fungi - classification
Fungi - isolation & purification
Nitrates
Seasons
Species diversity
Spores, Fungal - chemistry
Spores, Fungal - classification
Spores, Fungal - isolation & purification
Spring
Summer
Taxa
Temperature
Winter
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Summary:Zoosporic organisms are common inhabitants of aquatic environments; however there are few ecological studies made for Argentinean streams. In this contribution the taxonomic composition of zoosporic organisms from a stream and their abundance, frequency and diversity on cellulosic baits were analyzed. Samples of water and floating organic matter (vegetable debris) were taken at four dates and different environmental variables (temperature, dissolved oxygen and nutrient concentrations) were measured. Twenty-one taxa were recovered with the baiting technique. Physicochemical fluctuations affected the structure of the studied community; in spring the greatest species richness was related to high nutrient levels whereas in winter the greatest abundance and diversity was related to low water temperature, nutrient levels and well oxygenated conditions.
ISSN:0027-5514
1557-2536
DOI:10.3852/07-198