Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica
The nematode communities of Antarctica are considered simple. The few species present are well adapted to the harsh conditions and often endemic to Antarctica. Knowledge of Antarctic terrestrial ecosystems is increasing rapidly, but nematode communities remain to be explored in large parts of Antarc...
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Online Access: | http://handle.uws.edu.au:8081/1959.7/511551 https://doi.org/10.1017/S0954102011000174 |
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ftunivwestsyd:oai:researchdirect.westernsydney.edu.au:uws_12137 2023-05-15T13:34:53+02:00 Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica Nielsen, Uffe N. Wall, Diana H. Li, Grace Toro, Manuel Adams, Byron J. Virginia, Ross A. (Host institution) 2011 print 9 http://handle.uws.edu.au:8081/1959.7/511551 https://doi.org/10.1017/S0954102011000174 eng eng U.K, Blackwell Scientific Antarctic Science--09541020 Vol. 23, Issue 4 (Jul. 2011), pp. 349-357 biodiversity hotspot community composition soil fauna South Shetland Islands ; - journal article 2011 ftunivwestsyd https://doi.org/10.1017/S0954102011000174 2020-12-05T17:39:54Z The nematode communities of Antarctica are considered simple. The few species present are well adapted to the harsh conditions and often endemic to Antarctica. Knowledge of Antarctic terrestrial ecosystems is increasing rapidly, but nematode communities remain to be explored in large parts of Antarctica. In soil samples collected at Byers Peninsula (Antarctic Specially Protected Area No. 126), Livingston Island we recorded 37 nematode taxa but samples showed great variation in richness and abundance. Nematode richness decreased with increasing soil pH, whereas total abundances, and the abundance of several trophic groups, were greatest at intermediate pH (around 6.5–7). Moreover, the community composition was mainly related to pH and less so to soil moisture. Trophic group, and total nematode, rotifer and tardigrade, abundances were generally positively correlated. Byers Peninsula is thus, by maritime Antarctic standards, a nematode biodiversity hotspot, and the presence of several previously unrecorded genera indicates that nematode species richness in maritime Antarctica is probably underestimated. Our results indicate that abiotic factors influence nematode communities with little evidence for biotic interactions. The unexplained heterogeneity in community composition is probably related to variation in microclimate, vegetation, topography and unmeasured soil properties, but may also be contributed to by biological processes. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Livingston Island South Shetland Islands Rotifer Tardigrade University of Western Sydney (UWS): Research Direct Antarctic Byers ENVELOPE(-60.283,-60.283,-63.900,-63.900) Byers peninsula ENVELOPE(-61.066,-61.066,-62.633,-62.633) Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) South Shetland Islands Antarctic Science 23 4 349 357 |
institution |
Open Polar |
collection |
University of Western Sydney (UWS): Research Direct |
op_collection_id |
ftunivwestsyd |
language |
English |
topic |
biodiversity hotspot community composition soil fauna South Shetland Islands ; - |
spellingShingle |
biodiversity hotspot community composition soil fauna South Shetland Islands ; - Nielsen, Uffe N. Wall, Diana H. Li, Grace Toro, Manuel Adams, Byron J. Virginia, Ross A. Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica |
topic_facet |
biodiversity hotspot community composition soil fauna South Shetland Islands ; - |
description |
The nematode communities of Antarctica are considered simple. The few species present are well adapted to the harsh conditions and often endemic to Antarctica. Knowledge of Antarctic terrestrial ecosystems is increasing rapidly, but nematode communities remain to be explored in large parts of Antarctica. In soil samples collected at Byers Peninsula (Antarctic Specially Protected Area No. 126), Livingston Island we recorded 37 nematode taxa but samples showed great variation in richness and abundance. Nematode richness decreased with increasing soil pH, whereas total abundances, and the abundance of several trophic groups, were greatest at intermediate pH (around 6.5–7). Moreover, the community composition was mainly related to pH and less so to soil moisture. Trophic group, and total nematode, rotifer and tardigrade, abundances were generally positively correlated. Byers Peninsula is thus, by maritime Antarctic standards, a nematode biodiversity hotspot, and the presence of several previously unrecorded genera indicates that nematode species richness in maritime Antarctica is probably underestimated. Our results indicate that abiotic factors influence nematode communities with little evidence for biotic interactions. The unexplained heterogeneity in community composition is probably related to variation in microclimate, vegetation, topography and unmeasured soil properties, but may also be contributed to by biological processes. |
author2 |
(Host institution) |
format |
Article in Journal/Newspaper |
author |
Nielsen, Uffe N. Wall, Diana H. Li, Grace Toro, Manuel Adams, Byron J. Virginia, Ross A. |
author_facet |
Nielsen, Uffe N. Wall, Diana H. Li, Grace Toro, Manuel Adams, Byron J. Virginia, Ross A. |
author_sort |
Nielsen, Uffe N. |
title |
Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica |
title_short |
Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica |
title_full |
Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica |
title_fullStr |
Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica |
title_full_unstemmed |
Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica |
title_sort |
nematode communities of byers peninsula, livingston island, maritime antarctica |
publisher |
U.K, Blackwell Scientific |
publishDate |
2011 |
url |
http://handle.uws.edu.au:8081/1959.7/511551 https://doi.org/10.1017/S0954102011000174 |
long_lat |
ENVELOPE(-60.283,-60.283,-63.900,-63.900) ENVELOPE(-61.066,-61.066,-62.633,-62.633) ENVELOPE(-60.500,-60.500,-62.600,-62.600) |
geographic |
Antarctic Byers Byers peninsula Livingston Island South Shetland Islands |
geographic_facet |
Antarctic Byers Byers peninsula Livingston Island South Shetland Islands |
genre |
Antarc* Antarctic Antarctic Science Antarctica Livingston Island South Shetland Islands Rotifer Tardigrade |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Livingston Island South Shetland Islands Rotifer Tardigrade |
op_relation |
Antarctic Science--09541020 Vol. 23, Issue 4 (Jul. 2011), pp. 349-357 |
op_doi |
https://doi.org/10.1017/S0954102011000174 |
container_title |
Antarctic Science |
container_volume |
23 |
container_issue |
4 |
container_start_page |
349 |
op_container_end_page |
357 |
_version_ |
1766058763554390016 |