Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula

Microalgal communities inhabiting three soil sites with different degrees of influence from penguin colonies within and near the Cierva Point Site of Special Scientific Interest (64°10′S, 61°01′W) were analysed and their species composition and diversity compared with those in nearby mineral soils....

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Detalles Bibliográficos
Publicado:	2002
Materias:	community composition microalga seabird Site of Special Scientific Interest soil microorganism species diversity trophic status Antarctica algae Aves Bacillariophyta Chlorophyta Cyanobacteria Spheniscidae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n7_p488_Mataloni http://hdl.handle.net/20.500.12110/paper_07224060_v25_n7_p488_Mataloni
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_07224060_v25_n7_p488_Mataloni
record_format	dspace
spelling	paper:paper_07224060_v25_n7_p488_Mataloni2023-06-08T15:43:30Z Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula community composition microalga seabird Site of Special Scientific Interest soil microorganism species diversity trophic status Antarctica algae Aves Bacillariophyta Chlorophyta Cyanobacteria Spheniscidae Microalgal communities inhabiting three soil sites with different degrees of influence from penguin colonies within and near the Cierva Point Site of Special Scientific Interest (64°10′S, 61°01′W) were analysed and their species composition and diversity compared with those in nearby mineral soils. Concentrations of NH4-N and PO4-P increased drastically as a function of the degree of use by the penguins. Thins chemical variation was accompanied by changes in algal community structure: chlorophytes and diatoms dominated the less enriched site, while cyanobacteria were the exclusive dominants at the most enriched site. A significant fraction (28%) of the recorded species were also present in the mineral soils, but their abundances decreased with nutrient concentration. Biodiversity as measured by the Shannon diversity index was lower than in the mineral soils, and dropped from 1.79 to 0.44 with increasing influence of the bird colonies. These observations indicate that soil algal biodiversity decreases with increasing trophic status, as recorded for freshwater phytoplanktonic communities. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n7_p488_Mataloni http://hdl.handle.net/20.500.12110/paper_07224060_v25_n7_p488_Mataloni
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	community composition microalga seabird Site of Special Scientific Interest soil microorganism species diversity trophic status Antarctica algae Aves Bacillariophyta Chlorophyta Cyanobacteria Spheniscidae
spellingShingle	community composition microalga seabird Site of Special Scientific Interest soil microorganism species diversity trophic status Antarctica algae Aves Bacillariophyta Chlorophyta Cyanobacteria Spheniscidae Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula
topic_facet	community composition microalga seabird Site of Special Scientific Interest soil microorganism species diversity trophic status Antarctica algae Aves Bacillariophyta Chlorophyta Cyanobacteria Spheniscidae
description	Microalgal communities inhabiting three soil sites with different degrees of influence from penguin colonies within and near the Cierva Point Site of Special Scientific Interest (64°10′S, 61°01′W) were analysed and their species composition and diversity compared with those in nearby mineral soils. Concentrations of NH4-N and PO4-P increased drastically as a function of the degree of use by the penguins. Thins chemical variation was accompanied by changes in algal community structure: chlorophytes and diatoms dominated the less enriched site, while cyanobacteria were the exclusive dominants at the most enriched site. A significant fraction (28%) of the recorded species were also present in the mineral soils, but their abundances decreased with nutrient concentration. Biodiversity as measured by the Shannon diversity index was lower than in the mineral soils, and dropped from 1.79 to 0.44 with increasing influence of the bird colonies. These observations indicate that soil algal biodiversity decreases with increasing trophic status, as recorded for freshwater phytoplanktonic communities.
title	Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula
title_short	Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula
title_full	Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula
title_fullStr	Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula
title_full_unstemmed	Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula
title_sort	microalgal communities from ornithogenic soils at cierva point, antarctic peninsula
publishDate	2002
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n7_p488_Mataloni http://hdl.handle.net/20.500.12110/paper_07224060_v25_n7_p488_Mataloni
_version_	1768543088954834944

Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula

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