Biodiversity and ecology of hirudinea (<i>Annelida</i>) from the natural reserve of isla Martín García, Río de la Plata, Argentina
The Island of Martin Garcia lies at the confluence of the Uruguay and Paraná Rivers (upper Río de la Plata). This island is an outcrop of the crystalline basement. Due to basalt exploitation the island exhibits several ponds covered by carpets of free-floating macrophytes. Seven major environmental...
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Formato: | Articulo |
Lenguaje: | Inglés |
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2009
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/38167 http://www.scielo.br/pdf/bjb/v69n4/v69n4a14.pdf |
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I19-R120-10915-38167 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Naturales environmental protection biodiversity CCA physiology cosmopolitan conservation of natural resources ecology Annelida Helobdella endemics leeches biodiversidade cosmopolitas ecologia endêmicos sanguessuga |
spellingShingle |
Ciencias Naturales environmental protection biodiversity CCA physiology cosmopolitan conservation of natural resources ecology Annelida Helobdella endemics leeches biodiversidade cosmopolitas ecologia endêmicos sanguessuga César, Inés Irma Martin, Stella Maris Gullo, Bettina Sandra Liberto, Romina Biodiversity and ecology of hirudinea (<i>Annelida</i>) from the natural reserve of isla Martín García, Río de la Plata, Argentina |
topic_facet |
Ciencias Naturales environmental protection biodiversity CCA physiology cosmopolitan conservation of natural resources ecology Annelida Helobdella endemics leeches biodiversidade cosmopolitas ecologia endêmicos sanguessuga |
description |
The Island of Martin Garcia lies at the confluence of the Uruguay and Paraná Rivers (upper Río de la Plata). This island is an outcrop of the crystalline basement. Due to basalt exploitation the island exhibits several ponds covered by carpets of free-floating macrophytes. Seven major environmental variables were measured: water and air temperature, percentage of oxygen saturation, dissolved oxygen, electrical conductivity, total dissolved solids and pH. Eleven leech species were found, <i>Helobdella striata</i>, <i>H. diploides</i>, <i>H. adiastola</i> and <i>H. hyalina</i> were new records. UPGMA clustering of species based on their occurrence in different ecological conditions revealed three main species groups. Canonical Correspondence Analysis (CCA) explained 97.2% of the correlation between species and environmental variables. <i>H. triserialis</i> shows the widest range of tolerance, <i>H. hyalina</i> shows positive relationships to conductivity; <i>H. diploides</i> shows a high correlation with dissolved oxygen, <i>H. striata</i>, <i>H. lineata</i>, and <i>S. similis</i> are negatively correlated with water temperature, and <i>H. simplex</i> is positively correlated with pH. Relationships between the species richness (S) and the sampling sites were negatively correlated with water temperature and positively correlated with dissolved oxygen. Leech biodiversity from the water bodies of Martín García Island, shows a great diversity of species and a wide plasticity regarding the characteristics of the environmental factors considered. |
format |
Articulo Articulo |
author |
César, Inés Irma Martin, Stella Maris Gullo, Bettina Sandra Liberto, Romina |
author_facet |
César, Inés Irma Martin, Stella Maris Gullo, Bettina Sandra Liberto, Romina |
author_sort |
César, Inés Irma |
title |
Biodiversity and ecology of hirudinea (<i>Annelida</i>) from the natural reserve of isla Martín García, Río de la Plata, Argentina |
title_short |
Biodiversity and ecology of hirudinea (<i>Annelida</i>) from the natural reserve of isla Martín García, Río de la Plata, Argentina |
title_full |
Biodiversity and ecology of hirudinea (<i>Annelida</i>) from the natural reserve of isla Martín García, Río de la Plata, Argentina |
title_fullStr |
Biodiversity and ecology of hirudinea (<i>Annelida</i>) from the natural reserve of isla Martín García, Río de la Plata, Argentina |
title_full_unstemmed |
Biodiversity and ecology of hirudinea (<i>Annelida</i>) from the natural reserve of isla Martín García, Río de la Plata, Argentina |
title_sort |
biodiversity and ecology of hirudinea (<i>annelida</i>) from the natural reserve of isla martín garcía, río de la plata, argentina |
publishDate |
2009 |
url |
http://sedici.unlp.edu.ar/handle/10915/38167 http://www.scielo.br/pdf/bjb/v69n4/v69n4a14.pdf |
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Repositorios |
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1764820472360337412 |