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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Online Access: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n7_p488_Mataloni https://hdl.handle.net/20.500.12110/paper_07224060_v25_n7_p488_Mataloni |
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ftunibueairesbd:paper:paper_07224060_v25_n7_p488_Mataloni 2023-05-15T13:42:26+02:00 Microalgal communities from ornithogenic soils at Cierva Point, Antarctic Peninsula 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n7_p488_Mataloni https://hdl.handle.net/20.500.12110/paper_07224060_v25_n7_p488_Mataloni unknown 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 community composition microalga seabird Site of Special Scientific Interest soil microorganism species diversity trophic status Antarctica algae Aves Bacillariophyta Chlorophyta Cyanobacteria Spheniscidae 2002 ftunibueairesbd https://doi.org/20.500.12110/paper_07224060_v25_n7_p488_Mataloni 2023-02-16T02:05:28Z 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. Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Antarctica Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) Antarctic Antarctic Peninsula Cierva ENVELOPE(-60.873,-60.873,-64.156,-64.156) Cierva Point ENVELOPE(-60.967,-60.967,-64.150,-64.150) |
institution |
Open Polar |
collection |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
unknown |
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 https://hdl.handle.net/20.500.12110/paper_07224060_v25_n7_p488_Mataloni |
long_lat |
ENVELOPE(-60.873,-60.873,-64.156,-64.156) ENVELOPE(-60.967,-60.967,-64.150,-64.150) |
geographic |
Antarctic Antarctic Peninsula Cierva Cierva Point |
geographic_facet |
Antarctic Antarctic Peninsula Cierva Cierva Point |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_relation |
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 |
op_doi |
https://doi.org/20.500.12110/paper_07224060_v25_n7_p488_Mataloni |
_version_ |
1766167889133436928 |