Epibenthic macrofauna abundance during RSS James Clark Ross cruise JR144, South Sandwich arc
The remote South Sandwich arc is an archipelago of small volcanic islands and seamounts entirely surrounded by deep water and about 600 km away from the closest island, South Georgia. As some of the youngest islands (< 5 m.y.) in the Southern Ocean they are ideal for studying colonization process...
Main Authors: | , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2008
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.811814 https://doi.org/10.1594/PANGAEA.811814 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.811814 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.811814 2023-05-15T13:42:11+02:00 Epibenthic macrofauna abundance during RSS James Clark Ross cruise JR144, South Sandwich arc Kaiser, Stefanie Barnes, David K A Linse, Katrin Brandt, Angelika MEDIAN LATITUDE: -59.496411 * MEDIAN LONGITUDE: -27.363889 * SOUTH-BOUND LATITUDE: -59.524380 * WEST-BOUND LONGITUDE: -27.471640 * NORTH-BOUND LATITUDE: -59.470380 * EAST-BOUND LONGITUDE: -27.275620 * DATE/TIME START: 2006-03-27T00:00:00 * DATE/TIME END: 2006-03-28T00:00:00 2008-05-21 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.811814 https://doi.org/10.1594/PANGAEA.811814 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.811814 https://doi.org/10.1594/PANGAEA.811814 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kaiser, Stefanie; Barnes, David K A; Linse, Katrin; Brandt, Angelika (2008): Epibenthic macrofauna associated with the shelf and slope of a young and isolated Southern Ocean island. Antarctic Science, 20(03), 281-290, https://doi.org/10.1017/S0954102008001107 International Polar Year (2007-2008) IPY Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.811814 https://doi.org/10.1017/S0954102008001107 2023-01-20T07:33:00Z The remote South Sandwich arc is an archipelago of small volcanic islands and seamounts entirely surrounded by deep water and about 600 km away from the closest island, South Georgia. As some of the youngest islands (< 5 m.y.) in the Southern Ocean they are ideal for studying colonization processes of the seabed by benthic fauna, but are rarely investigated because of remoteness and extreme weather. The current study attempted to quantify the richness and abundance of the epibenthic macrofauna around the Southern Thule group by taking five epibenthic sledge samples along a depth transect including three shelf (one at 300 m and two at 500 m) and two slope stations (1000 and 1500 m). Our aim was to investigate higher taxon richness and community composition in an isolated Antarctic locality, since recent volcanic eruptions between 1964 and 1997. We examined patterns across all epibenthic macrofauna at phylum and class levels, and investigated trends in some model groups of crustaceans to order and family level. We found that abundance was highest in the shallowest sample and decreased with depth. Shelf samples (300 and 500 m) were dominated by molluscs and malacostracans while at the deeper stations (1000 and 1500 m) nematodes were the most abundant taxon. Surprisingly, the shallow shelf was dominated by animals with restricted dispersal abilities, such as direct developing brooders (malacostracans) or those with lecithotrophic larvae (bivalves of the genus Yoldiella, most bryozoan species). Despite Southern Thule's geological youth, recent eruptions, and its remoteness the shallow shelf was rich in higher taxa (phyla/classes) as well as orders and families of our model groups. Future work at higher taxonomic resolution (species level) should greatly increase understanding of how life has reached and established on these young and highly disturbed seabeds. Dataset Antarc* Antarctic Antarctic Science International Polar Year Southern Ocean Southern Thule PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean Southern Thule ENVELOPE(-27.200,-27.200,-59.433,-59.433) Southern Thule Group ENVELOPE(-27.200,-27.200,-59.433,-59.433) ENVELOPE(-27.471640,-27.275620,-59.470380,-59.524380) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
International Polar Year (2007-2008) IPY |
spellingShingle |
International Polar Year (2007-2008) IPY Kaiser, Stefanie Barnes, David K A Linse, Katrin Brandt, Angelika Epibenthic macrofauna abundance during RSS James Clark Ross cruise JR144, South Sandwich arc |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
The remote South Sandwich arc is an archipelago of small volcanic islands and seamounts entirely surrounded by deep water and about 600 km away from the closest island, South Georgia. As some of the youngest islands (< 5 m.y.) in the Southern Ocean they are ideal for studying colonization processes of the seabed by benthic fauna, but are rarely investigated because of remoteness and extreme weather. The current study attempted to quantify the richness and abundance of the epibenthic macrofauna around the Southern Thule group by taking five epibenthic sledge samples along a depth transect including three shelf (one at 300 m and two at 500 m) and two slope stations (1000 and 1500 m). Our aim was to investigate higher taxon richness and community composition in an isolated Antarctic locality, since recent volcanic eruptions between 1964 and 1997. We examined patterns across all epibenthic macrofauna at phylum and class levels, and investigated trends in some model groups of crustaceans to order and family level. We found that abundance was highest in the shallowest sample and decreased with depth. Shelf samples (300 and 500 m) were dominated by molluscs and malacostracans while at the deeper stations (1000 and 1500 m) nematodes were the most abundant taxon. Surprisingly, the shallow shelf was dominated by animals with restricted dispersal abilities, such as direct developing brooders (malacostracans) or those with lecithotrophic larvae (bivalves of the genus Yoldiella, most bryozoan species). Despite Southern Thule's geological youth, recent eruptions, and its remoteness the shallow shelf was rich in higher taxa (phyla/classes) as well as orders and families of our model groups. Future work at higher taxonomic resolution (species level) should greatly increase understanding of how life has reached and established on these young and highly disturbed seabeds. |
format |
Dataset |
author |
Kaiser, Stefanie Barnes, David K A Linse, Katrin Brandt, Angelika |
author_facet |
Kaiser, Stefanie Barnes, David K A Linse, Katrin Brandt, Angelika |
author_sort |
Kaiser, Stefanie |
title |
Epibenthic macrofauna abundance during RSS James Clark Ross cruise JR144, South Sandwich arc |
title_short |
Epibenthic macrofauna abundance during RSS James Clark Ross cruise JR144, South Sandwich arc |
title_full |
Epibenthic macrofauna abundance during RSS James Clark Ross cruise JR144, South Sandwich arc |
title_fullStr |
Epibenthic macrofauna abundance during RSS James Clark Ross cruise JR144, South Sandwich arc |
title_full_unstemmed |
Epibenthic macrofauna abundance during RSS James Clark Ross cruise JR144, South Sandwich arc |
title_sort |
epibenthic macrofauna abundance during rss james clark ross cruise jr144, south sandwich arc |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.811814 https://doi.org/10.1594/PANGAEA.811814 |
op_coverage |
MEDIAN LATITUDE: -59.496411 * MEDIAN LONGITUDE: -27.363889 * SOUTH-BOUND LATITUDE: -59.524380 * WEST-BOUND LONGITUDE: -27.471640 * NORTH-BOUND LATITUDE: -59.470380 * EAST-BOUND LONGITUDE: -27.275620 * DATE/TIME START: 2006-03-27T00:00:00 * DATE/TIME END: 2006-03-28T00:00:00 |
long_lat |
ENVELOPE(-27.200,-27.200,-59.433,-59.433) ENVELOPE(-27.200,-27.200,-59.433,-59.433) ENVELOPE(-27.471640,-27.275620,-59.470380,-59.524380) |
geographic |
Antarctic Southern Ocean Southern Thule Southern Thule Group |
geographic_facet |
Antarctic Southern Ocean Southern Thule Southern Thule Group |
genre |
Antarc* Antarctic Antarctic Science International Polar Year Southern Ocean Southern Thule |
genre_facet |
Antarc* Antarctic Antarctic Science International Polar Year Southern Ocean Southern Thule |
op_source |
Supplement to: Kaiser, Stefanie; Barnes, David K A; Linse, Katrin; Brandt, Angelika (2008): Epibenthic macrofauna associated with the shelf and slope of a young and isolated Southern Ocean island. Antarctic Science, 20(03), 281-290, https://doi.org/10.1017/S0954102008001107 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.811814 https://doi.org/10.1594/PANGAEA.811814 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.811814 https://doi.org/10.1017/S0954102008001107 |
_version_ |
1766164478523604992 |