Ecological biogeography of southern polar encrusting faunas
Aim To investigate the affinities and similarities between coastal (marine) encrusting faunas along the Andes–Scotia Arc–Antarctic Peninsula mountain chain with a uniform sampling strategy. Location Twelve different samples sites were selected on the (southern) South American and (western) Antarctic...
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crwiley:10.1046/j.1365-2699.2001.00562.x 2024-06-02T07:58:32+00:00 Ecological biogeography of southern polar encrusting faunas Barnes, David K. A. De Grave, Sammy 2001 http://dx.doi.org/10.1046/j.1365-2699.2001.00562.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2699.2001.00562.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2699.2001.00562.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Biogeography volume 28, issue 3, page 359-365 ISSN 0305-0270 1365-2699 journal-article 2001 crwiley https://doi.org/10.1046/j.1365-2699.2001.00562.x 2024-05-03T11:43:35Z Aim To investigate the affinities and similarities between coastal (marine) encrusting faunas along the Andes–Scotia Arc–Antarctic Peninsula mountain chain with a uniform sampling strategy. Location Twelve different samples sites were selected on the (southern) South American and (western) Antarctic continents. The sites spanned 25° of latitude along the Andes–Scotia Arc–Antarctic Peninsula mountain chain from Tierra del Fuego to the Ross Sea (Antarctica). Methods Encrusting faunal colonists were identified on rocky (boulder/cobble) surfaces constituting a total surface area of 2 m 2 from each of twelve localities at depths from the intertidal zone to 12 m. Faunal suites of sites were subjected to differing but common modern analyses, Detrended Correspondance Analysis (DCA) and TWINSPAN . Results Typically the number of encrusting species increased with depth and decreased with isolation (remote islands, such as South Georgia and Bird Island had depauperate faunas). The proportion of the total fauna constituted by bryozoans, sponges and other taxa changed with site latitude and isolation. Ordination (DCA) of the site species data matrix revealed distinct Patagonian, Falkland and Antarctic groupings. Ordination of just the Antarctic grouping revealed a cline from the northerly and shallower sites to those more southerly and deep. TWINSPAN analysis of the same data set largely supported the ordination. Ordination at generic level showed a high degree of similarity with the species ordination pattern. Main conclusions The north/south, deep/shallow, cline found shows distinct faunistic patterning within biogeographic zones. The separation of sites within and outside the Polar Frontal Zone (PFZ) support more classically based historic biogeographic studies. The major difference between the findings of this study was the organization of sites into a cline vs. distinct zones. The simplest explanation for why studies yeild such different findings must lie with the considerable differences in the types of data sets used; ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Bird Island Ross Sea Tierra del Fuego Wiley Online Library Antarctic The Antarctic Antarctic Peninsula Ross Sea Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Peninsula Mountain ENVELOPE(-134.254,-134.254,59.833,59.833) Journal of Biogeography 28 3 359 365 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Aim To investigate the affinities and similarities between coastal (marine) encrusting faunas along the Andes–Scotia Arc–Antarctic Peninsula mountain chain with a uniform sampling strategy. Location Twelve different samples sites were selected on the (southern) South American and (western) Antarctic continents. The sites spanned 25° of latitude along the Andes–Scotia Arc–Antarctic Peninsula mountain chain from Tierra del Fuego to the Ross Sea (Antarctica). Methods Encrusting faunal colonists were identified on rocky (boulder/cobble) surfaces constituting a total surface area of 2 m 2 from each of twelve localities at depths from the intertidal zone to 12 m. Faunal suites of sites were subjected to differing but common modern analyses, Detrended Correspondance Analysis (DCA) and TWINSPAN . Results Typically the number of encrusting species increased with depth and decreased with isolation (remote islands, such as South Georgia and Bird Island had depauperate faunas). The proportion of the total fauna constituted by bryozoans, sponges and other taxa changed with site latitude and isolation. Ordination (DCA) of the site species data matrix revealed distinct Patagonian, Falkland and Antarctic groupings. Ordination of just the Antarctic grouping revealed a cline from the northerly and shallower sites to those more southerly and deep. TWINSPAN analysis of the same data set largely supported the ordination. Ordination at generic level showed a high degree of similarity with the species ordination pattern. Main conclusions The north/south, deep/shallow, cline found shows distinct faunistic patterning within biogeographic zones. The separation of sites within and outside the Polar Frontal Zone (PFZ) support more classically based historic biogeographic studies. The major difference between the findings of this study was the organization of sites into a cline vs. distinct zones. The simplest explanation for why studies yeild such different findings must lie with the considerable differences in the types of data sets used; ... |
format |
Article in Journal/Newspaper |
author |
Barnes, David K. A. De Grave, Sammy |
spellingShingle |
Barnes, David K. A. De Grave, Sammy Ecological biogeography of southern polar encrusting faunas |
author_facet |
Barnes, David K. A. De Grave, Sammy |
author_sort |
Barnes, David K. A. |
title |
Ecological biogeography of southern polar encrusting faunas |
title_short |
Ecological biogeography of southern polar encrusting faunas |
title_full |
Ecological biogeography of southern polar encrusting faunas |
title_fullStr |
Ecological biogeography of southern polar encrusting faunas |
title_full_unstemmed |
Ecological biogeography of southern polar encrusting faunas |
title_sort |
ecological biogeography of southern polar encrusting faunas |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1046/j.1365-2699.2001.00562.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2699.2001.00562.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2699.2001.00562.x |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) ENVELOPE(-134.254,-134.254,59.833,59.833) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Ross Sea Bird Island Peninsula Mountain |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Ross Sea Bird Island Peninsula Mountain |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Bird Island Ross Sea Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Bird Island Ross Sea Tierra del Fuego |
op_source |
Journal of Biogeography volume 28, issue 3, page 359-365 ISSN 0305-0270 1365-2699 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2699.2001.00562.x |
container_title |
Journal of Biogeography |
container_volume |
28 |
container_issue |
3 |
container_start_page |
359 |
op_container_end_page |
365 |
_version_ |
1800741907722141696 |