Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance?
One characteristic pattern found in the marine Antarctic shallow environments is the unusually high proportion of species with protected and pelagic lecitotrophic development modes. However, species with planktotrophic development generally appear as the most conspicuous types of organisms in these...
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ftunivchilecap:oai:www.captura.uchile.cl:2250/2692 2023-05-15T13:03:57+02:00 Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance? Palma, Alvaro T. Poulin, Elie Silva, Marcelo G. San Martín, Roberto B. Muñoz, Carlos Díaz, Angie 2007-02 http://www.captura.uchile.cl/handle/2250/2692 en eng SPRINGER KING-GEORGE ISLAND SOUTH-SHETLAND ISLANDS COMMUNITY STRUCTURE KERGUELEN ISLANDS BENTHIC COMMUNITY ADELAIDE ISLAND ABATUS-CORDATUS MCMURDO SOUND SEA REPRODUCTION Artículo de Revista 2007 ftunivchilecap 2013-12-20T10:20:02Z One characteristic pattern found in the marine Antarctic shallow environments is the unusually high proportion of species with protected and pelagic lecitotrophic development modes. However, species with planktotrophic development generally appear as the most conspicuous types of organisms in these environments. The Antarctic shallow benthos is considered as one of the most disturbed in the world, mainly due to the action of ice, thus one could hypothesize that such an environment should favor organisms with high dispersal capability. In order to test this general hypothesis, for two consecutive summers (2004-2005) and at two locations, we quantified the abundance and size distribution of most echinoderms present along bathymetric transects. Our results show the predominance of broadcasters (i.e., Sterechinus neumayeri and Odontaster validus) at a location where disturbances are common, while brooders (e.g., Abatus agassizii) only occurred at shallower depths of the least disturbed location. These results not only corroborate the hypothesis that local disturbance is an important factor generating these ecological patterns, but also suggest how ice-related disturbances could represent a major selecting agent behind the patterns of species diversity at an evolutionary scale in Antarctica. Article in Journal/Newspaper Adelaide Island Antarc* Antarctic Antarctica Kerguelen Islands King George Island McMurdo Sound South Shetland Islands Universidad de Chile: Captura Adelaide Island ENVELOPE(-68.914,-68.914,-67.762,-67.762) Antarctic Kerguelen Kerguelen Islands King George Island McMurdo Sound South Shetland Islands The Antarctic |
institution |
Open Polar |
collection |
Universidad de Chile: Captura |
op_collection_id |
ftunivchilecap |
language |
English |
topic |
KING-GEORGE ISLAND SOUTH-SHETLAND ISLANDS COMMUNITY STRUCTURE KERGUELEN ISLANDS BENTHIC COMMUNITY ADELAIDE ISLAND ABATUS-CORDATUS MCMURDO SOUND SEA REPRODUCTION |
spellingShingle |
KING-GEORGE ISLAND SOUTH-SHETLAND ISLANDS COMMUNITY STRUCTURE KERGUELEN ISLANDS BENTHIC COMMUNITY ADELAIDE ISLAND ABATUS-CORDATUS MCMURDO SOUND SEA REPRODUCTION Palma, Alvaro T. Poulin, Elie Silva, Marcelo G. San Martín, Roberto B. Muñoz, Carlos Díaz, Angie Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance? |
topic_facet |
KING-GEORGE ISLAND SOUTH-SHETLAND ISLANDS COMMUNITY STRUCTURE KERGUELEN ISLANDS BENTHIC COMMUNITY ADELAIDE ISLAND ABATUS-CORDATUS MCMURDO SOUND SEA REPRODUCTION |
description |
One characteristic pattern found in the marine Antarctic shallow environments is the unusually high proportion of species with protected and pelagic lecitotrophic development modes. However, species with planktotrophic development generally appear as the most conspicuous types of organisms in these environments. The Antarctic shallow benthos is considered as one of the most disturbed in the world, mainly due to the action of ice, thus one could hypothesize that such an environment should favor organisms with high dispersal capability. In order to test this general hypothesis, for two consecutive summers (2004-2005) and at two locations, we quantified the abundance and size distribution of most echinoderms present along bathymetric transects. Our results show the predominance of broadcasters (i.e., Sterechinus neumayeri and Odontaster validus) at a location where disturbances are common, while brooders (e.g., Abatus agassizii) only occurred at shallower depths of the least disturbed location. These results not only corroborate the hypothesis that local disturbance is an important factor generating these ecological patterns, but also suggest how ice-related disturbances could represent a major selecting agent behind the patterns of species diversity at an evolutionary scale in Antarctica. |
format |
Article in Journal/Newspaper |
author |
Palma, Alvaro T. Poulin, Elie Silva, Marcelo G. San Martín, Roberto B. Muñoz, Carlos Díaz, Angie |
author_facet |
Palma, Alvaro T. Poulin, Elie Silva, Marcelo G. San Martín, Roberto B. Muñoz, Carlos Díaz, Angie |
author_sort |
Palma, Alvaro T. |
title |
Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance? |
title_short |
Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance? |
title_full |
Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance? |
title_fullStr |
Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance? |
title_full_unstemmed |
Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance? |
title_sort |
antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance? |
publisher |
SPRINGER |
publishDate |
2007 |
url |
http://www.captura.uchile.cl/handle/2250/2692 |
long_lat |
ENVELOPE(-68.914,-68.914,-67.762,-67.762) |
geographic |
Adelaide Island Antarctic Kerguelen Kerguelen Islands King George Island McMurdo Sound South Shetland Islands The Antarctic |
geographic_facet |
Adelaide Island Antarctic Kerguelen Kerguelen Islands King George Island McMurdo Sound South Shetland Islands The Antarctic |
genre |
Adelaide Island Antarc* Antarctic Antarctica Kerguelen Islands King George Island McMurdo Sound South Shetland Islands |
genre_facet |
Adelaide Island Antarc* Antarctic Antarctica Kerguelen Islands King George Island McMurdo Sound South Shetland Islands |
_version_ |
1766348764791963648 |