Seasonal dynamic of macroalgae in intertidal pools formed by beds of Crassostrea gigas (Mollusca, Bivalvia) on the north Patagonian Atlantic coast
Abstract Intertidal pools represent restricted habitats for macroalgal assemblages, and their structure is determined by physical and biotic factors. The establishment of the exotic oyster Crassostrea gigas on the north Patagonian Atlantic coast led to the formation of intertidal pools; these provid...
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Language: | English |
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Walter de Gruyter GmbH
2012
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Online Access: | http://dx.doi.org/10.1515/bot-2011-0122 https://www.degruyter.com/document/doi/10.1515/bot-2011-0122/xml https://www.degruyter.com/document/doi/10.1515/bot-2011-0122/pdf |
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crdegruyter:10.1515/bot-2011-0122 2024-09-09T19:37:20+00:00 Seasonal dynamic of macroalgae in intertidal pools formed by beds of Crassostrea gigas (Mollusca, Bivalvia) on the north Patagonian Atlantic coast Croce, M. Emilia Parodi, Elisa R. 2012 http://dx.doi.org/10.1515/bot-2011-0122 https://www.degruyter.com/document/doi/10.1515/bot-2011-0122/xml https://www.degruyter.com/document/doi/10.1515/bot-2011-0122/pdf en eng Walter de Gruyter GmbH botm volume 55, issue 1, page 49-58 ISSN 1437-4323 0006-8055 journal-article 2012 crdegruyter https://doi.org/10.1515/bot-2011-0122 2024-08-05T04:13:35Z Abstract Intertidal pools represent restricted habitats for macroalgal assemblages, and their structure is determined by physical and biotic factors. The establishment of the exotic oyster Crassostrea gigas on the north Patagonian Atlantic coast led to the formation of intertidal pools; these provide habitats for macroalgal settlement. We aimed to determine the composition, distribution and abundance of the macroalgal assemblage inhabiting these pools, and to establish the structuring variables. Several biotic and abiotic variables were evaluated in 36 pools in winter and summer. Correlations were calculated and permutation analysis of variance and constrained redundancy analysis were conducted to determine the structuring variables. Unlike other Patagonian coasts, richness was low and pools were characterized by a dominance of red algae. Richness was higher in winter, while diversity was lower because of the dominance of Polysiphonia abscissa , which had the highest percentage of occurrence. Temperature was a putative factor determining seasonal richness and diversity. Elevation and surface area of the pools were structuring factors for assemblage biomass. We demonstrated distinct assemblage dynamics. Polysiphonia abscissa developed large populations in winter, which declined towards the summer, while Gelidium maggsiae and Gelidiella calcicola formed dense turfs during summer stress. Article in Journal/Newspaper Crassostrea gigas De Gruyter Botanica Marina 55 1 |
institution |
Open Polar |
collection |
De Gruyter |
op_collection_id |
crdegruyter |
language |
English |
description |
Abstract Intertidal pools represent restricted habitats for macroalgal assemblages, and their structure is determined by physical and biotic factors. The establishment of the exotic oyster Crassostrea gigas on the north Patagonian Atlantic coast led to the formation of intertidal pools; these provide habitats for macroalgal settlement. We aimed to determine the composition, distribution and abundance of the macroalgal assemblage inhabiting these pools, and to establish the structuring variables. Several biotic and abiotic variables were evaluated in 36 pools in winter and summer. Correlations were calculated and permutation analysis of variance and constrained redundancy analysis were conducted to determine the structuring variables. Unlike other Patagonian coasts, richness was low and pools were characterized by a dominance of red algae. Richness was higher in winter, while diversity was lower because of the dominance of Polysiphonia abscissa , which had the highest percentage of occurrence. Temperature was a putative factor determining seasonal richness and diversity. Elevation and surface area of the pools were structuring factors for assemblage biomass. We demonstrated distinct assemblage dynamics. Polysiphonia abscissa developed large populations in winter, which declined towards the summer, while Gelidium maggsiae and Gelidiella calcicola formed dense turfs during summer stress. |
format |
Article in Journal/Newspaper |
author |
Croce, M. Emilia Parodi, Elisa R. |
spellingShingle |
Croce, M. Emilia Parodi, Elisa R. Seasonal dynamic of macroalgae in intertidal pools formed by beds of Crassostrea gigas (Mollusca, Bivalvia) on the north Patagonian Atlantic coast |
author_facet |
Croce, M. Emilia Parodi, Elisa R. |
author_sort |
Croce, M. Emilia |
title |
Seasonal dynamic of macroalgae in intertidal pools formed by beds of Crassostrea gigas (Mollusca, Bivalvia) on the north Patagonian Atlantic coast |
title_short |
Seasonal dynamic of macroalgae in intertidal pools formed by beds of Crassostrea gigas (Mollusca, Bivalvia) on the north Patagonian Atlantic coast |
title_full |
Seasonal dynamic of macroalgae in intertidal pools formed by beds of Crassostrea gigas (Mollusca, Bivalvia) on the north Patagonian Atlantic coast |
title_fullStr |
Seasonal dynamic of macroalgae in intertidal pools formed by beds of Crassostrea gigas (Mollusca, Bivalvia) on the north Patagonian Atlantic coast |
title_full_unstemmed |
Seasonal dynamic of macroalgae in intertidal pools formed by beds of Crassostrea gigas (Mollusca, Bivalvia) on the north Patagonian Atlantic coast |
title_sort |
seasonal dynamic of macroalgae in intertidal pools formed by beds of crassostrea gigas (mollusca, bivalvia) on the north patagonian atlantic coast |
publisher |
Walter de Gruyter GmbH |
publishDate |
2012 |
url |
http://dx.doi.org/10.1515/bot-2011-0122 https://www.degruyter.com/document/doi/10.1515/bot-2011-0122/xml https://www.degruyter.com/document/doi/10.1515/bot-2011-0122/pdf |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
botm volume 55, issue 1, page 49-58 ISSN 1437-4323 0006-8055 |
op_doi |
https://doi.org/10.1515/bot-2011-0122 |
container_title |
Botanica Marina |
container_volume |
55 |
container_issue |
1 |
_version_ |
1809906519568809984 |