Siphonophores in fjords and channels in southern Patagonia: biodiversity, spatial distribution and environmental association
This study characterizes the abundance and spatial distribution of siphonophores between the Trinidad Channel (50°06′S) and the Strait of Magellan (52°45′S) in southern Chile, during October–November 2009. Ten species were identified, of which Agalma elegans, Rosacea plicata and Sphaeronectes fragil...
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crcambridgeupr:10.1017/s0025315416001302 2024-03-03T08:38:00+00:00 Siphonophores in fjords and channels in southern Patagonia: biodiversity, spatial distribution and environmental association Palma, Sergio Retamal, María Cristina Silva, Nelson Canepa, Antonio 2016 http://dx.doi.org/10.1017/s0025315416001302 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315416001302 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 98, issue 2, page 245-259 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2016 crcambridgeupr https://doi.org/10.1017/s0025315416001302 2024-02-08T08:32:43Z This study characterizes the abundance and spatial distribution of siphonophores between the Trinidad Channel (50°06′S) and the Strait of Magellan (52°45′S) in southern Chile, during October–November 2009. Ten species were identified, of which Agalma elegans, Rosacea plicata and Sphaeronectes fragilis are new records for this region. Dominant species showed similar dominance values e.g. Lensia conoidea (26.3%), Dimophyes arctica (24.6%), Lensia meteori (22.2%) and Muggiaea atlantica (20.7%). Eudoxids of L. conoidea and D. arctica represented 97.3% of all eudoxids collected and they were mainly collected in estuarine waters. The highest densities were found in estuarine waters (high vertical stratification and low temperature, salinity and dissolved oxygen values). On the other hand, the lowest densities were found in coastal areas influenced by permanent influx of Sub-Antarctic waters from the Pacific (greater instability and vertical mixing, higher temperatures, salinity and dissolved oxygen values). Temperature and dissolved oxygen were the most important environmental variables. In general, all the dominant species showed a positive association with temperature and a negative association with dissolved oxygen (with the exception of L. meteori ). The vertical distribution showed that M. atlantica was mainly distributed in the first 50 m, in association with estuarine waters, while L. conoidea, L. meteori and D. arctica were mainly found in the deeper layer (50–200 m) and in association with modified Sub-Antarctic waters. The comparison of the results obtained in the springs of 1996 and 2009 showed a significant increase in abundance. Article in Journal/Newspaper Antarc* Antarctic Cambridge University Press Antarctic Patagonia Pacific Trinidad ENVELOPE(-60.734,-60.734,-63.816,-63.816) Journal of the Marine Biological Association of the United Kingdom 98 2 245 259 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Palma, Sergio Retamal, María Cristina Silva, Nelson Canepa, Antonio Siphonophores in fjords and channels in southern Patagonia: biodiversity, spatial distribution and environmental association |
topic_facet |
Aquatic Science |
description |
This study characterizes the abundance and spatial distribution of siphonophores between the Trinidad Channel (50°06′S) and the Strait of Magellan (52°45′S) in southern Chile, during October–November 2009. Ten species were identified, of which Agalma elegans, Rosacea plicata and Sphaeronectes fragilis are new records for this region. Dominant species showed similar dominance values e.g. Lensia conoidea (26.3%), Dimophyes arctica (24.6%), Lensia meteori (22.2%) and Muggiaea atlantica (20.7%). Eudoxids of L. conoidea and D. arctica represented 97.3% of all eudoxids collected and they were mainly collected in estuarine waters. The highest densities were found in estuarine waters (high vertical stratification and low temperature, salinity and dissolved oxygen values). On the other hand, the lowest densities were found in coastal areas influenced by permanent influx of Sub-Antarctic waters from the Pacific (greater instability and vertical mixing, higher temperatures, salinity and dissolved oxygen values). Temperature and dissolved oxygen were the most important environmental variables. In general, all the dominant species showed a positive association with temperature and a negative association with dissolved oxygen (with the exception of L. meteori ). The vertical distribution showed that M. atlantica was mainly distributed in the first 50 m, in association with estuarine waters, while L. conoidea, L. meteori and D. arctica were mainly found in the deeper layer (50–200 m) and in association with modified Sub-Antarctic waters. The comparison of the results obtained in the springs of 1996 and 2009 showed a significant increase in abundance. |
format |
Article in Journal/Newspaper |
author |
Palma, Sergio Retamal, María Cristina Silva, Nelson Canepa, Antonio |
author_facet |
Palma, Sergio Retamal, María Cristina Silva, Nelson Canepa, Antonio |
author_sort |
Palma, Sergio |
title |
Siphonophores in fjords and channels in southern Patagonia: biodiversity, spatial distribution and environmental association |
title_short |
Siphonophores in fjords and channels in southern Patagonia: biodiversity, spatial distribution and environmental association |
title_full |
Siphonophores in fjords and channels in southern Patagonia: biodiversity, spatial distribution and environmental association |
title_fullStr |
Siphonophores in fjords and channels in southern Patagonia: biodiversity, spatial distribution and environmental association |
title_full_unstemmed |
Siphonophores in fjords and channels in southern Patagonia: biodiversity, spatial distribution and environmental association |
title_sort |
siphonophores in fjords and channels in southern patagonia: biodiversity, spatial distribution and environmental association |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/s0025315416001302 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315416001302 |
long_lat |
ENVELOPE(-60.734,-60.734,-63.816,-63.816) |
geographic |
Antarctic Patagonia Pacific Trinidad |
geographic_facet |
Antarctic Patagonia Pacific Trinidad |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 98, issue 2, page 245-259 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315416001302 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
98 |
container_issue |
2 |
container_start_page |
245 |
op_container_end_page |
259 |
_version_ |
1792503586560671744 |