Spatial patterns of benthic diversity in molluscs from
Abstract: Despite several works that have documented patterns of diversity in deep sea organisms, trends of diversity and the processes responsible for such trends still remain unclear. To date very few studies have documented the effects of variables such as latitude and longitude in deep-sea organ...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2009
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.7639 http://webs.uvigo.es/colabarria/papers/ANS 201.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.548.7639 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.548.7639 2023-05-15T13:37:32+02:00 Spatial patterns of benthic diversity in molluscs from Cristian Aldea Celia Olabarria Jesús S. Troncoso The Pennsylvania State University CiteSeerX Archives 2009 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.7639 http://webs.uvigo.es/colabarria/papers/ANS 201.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.7639 http://webs.uvigo.es/colabarria/papers/ANS 201.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://webs.uvigo.es/colabarria/papers/ANS 201.pdf Key words alpha beta and gamma diversity Bellingshausen Sea bivalves gastropods rare species South Shetland Islands text 2009 ftciteseerx 2016-01-08T11:24:53Z Abstract: Despite several works that have documented patterns of diversity in deep sea organisms, trends of diversity and the processes responsible for such trends still remain unclear. To date very few studies have documented the effects of variables such as latitude and longitude in deep-sea organisms in the Antarctic region. We explored the spatial patterns of diversity of benthic gastropods and bivalves in an extensive region about 2200 km long and 500 km wide from the South Shetland Islands to the Bellingshausen Sea in West Antarctica. A total of 134 species from 54 sites was recorded. Alpha diversity and beta diversity (measured as Whittaker’s and Bray-Curtis similarity indices) were highly variable among areas. None of the species richness estimators measured as Sobs, Chao2, Jacknife1 and Jacknife2, stabilized towards asymptotic values in any area. The number of rare species was large with almost half of species represented by 1 or 2 individuals (41%) and most species (62%) restricted to 1 or 2 sites. The partial Mantel test revealed that similarity between sites increased with the decrease of depth differences, but not with horizontal separation. Text Antarc* Antarctic Antarctica Bellingshausen Sea South Shetland Islands West Antarctica Unknown Antarctic Bellingshausen Sea Bray ENVELOPE(-114.067,-114.067,-74.833,-74.833) South Shetland Islands The Antarctic West Antarctica |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words alpha beta and gamma diversity Bellingshausen Sea bivalves gastropods rare species South Shetland Islands |
spellingShingle |
Key words alpha beta and gamma diversity Bellingshausen Sea bivalves gastropods rare species South Shetland Islands Cristian Aldea Celia Olabarria Jesús S. Troncoso Spatial patterns of benthic diversity in molluscs from |
topic_facet |
Key words alpha beta and gamma diversity Bellingshausen Sea bivalves gastropods rare species South Shetland Islands |
description |
Abstract: Despite several works that have documented patterns of diversity in deep sea organisms, trends of diversity and the processes responsible for such trends still remain unclear. To date very few studies have documented the effects of variables such as latitude and longitude in deep-sea organisms in the Antarctic region. We explored the spatial patterns of diversity of benthic gastropods and bivalves in an extensive region about 2200 km long and 500 km wide from the South Shetland Islands to the Bellingshausen Sea in West Antarctica. A total of 134 species from 54 sites was recorded. Alpha diversity and beta diversity (measured as Whittaker’s and Bray-Curtis similarity indices) were highly variable among areas. None of the species richness estimators measured as Sobs, Chao2, Jacknife1 and Jacknife2, stabilized towards asymptotic values in any area. The number of rare species was large with almost half of species represented by 1 or 2 individuals (41%) and most species (62%) restricted to 1 or 2 sites. The partial Mantel test revealed that similarity between sites increased with the decrease of depth differences, but not with horizontal separation. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Cristian Aldea Celia Olabarria Jesús S. Troncoso |
author_facet |
Cristian Aldea Celia Olabarria Jesús S. Troncoso |
author_sort |
Cristian Aldea |
title |
Spatial patterns of benthic diversity in molluscs from |
title_short |
Spatial patterns of benthic diversity in molluscs from |
title_full |
Spatial patterns of benthic diversity in molluscs from |
title_fullStr |
Spatial patterns of benthic diversity in molluscs from |
title_full_unstemmed |
Spatial patterns of benthic diversity in molluscs from |
title_sort |
spatial patterns of benthic diversity in molluscs from |
publishDate |
2009 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.7639 http://webs.uvigo.es/colabarria/papers/ANS 201.pdf |
long_lat |
ENVELOPE(-114.067,-114.067,-74.833,-74.833) |
geographic |
Antarctic Bellingshausen Sea Bray South Shetland Islands The Antarctic West Antarctica |
geographic_facet |
Antarctic Bellingshausen Sea Bray South Shetland Islands The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctica Bellingshausen Sea South Shetland Islands West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Bellingshausen Sea South Shetland Islands West Antarctica |
op_source |
http://webs.uvigo.es/colabarria/papers/ANS 201.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.7639 http://webs.uvigo.es/colabarria/papers/ANS 201.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766093397898035200 |