Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica
Abstract: 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...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.663.8304 2023-05-15T13:38:31+02:00 Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica Uffe N. Nielsen Diana H. Wall Grace Li Manuel Toro Byron J. Adams Ross A. Virginia The Pennsylvania State University CiteSeerX Archives 2010 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.663.8304 http://adamslab.byu.edu/Portals/74/docs/Papers/Antarctic+Science+2011+Nielsen.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.663.8304 http://adamslab.byu.edu/Portals/74/docs/Papers/Antarctic+Science+2011+Nielsen.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://adamslab.byu.edu/Portals/74/docs/Papers/Antarctic+Science+2011+Nielsen.pdf text 2010 ftciteseerx 2016-01-08T17:00:12Z Abstract: 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. Text Antarc* Antarctic Antarctic Science Antarctica Livingston Island Rotifer Tardigrade Unknown 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) |
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description |
Abstract: 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 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Uffe N. Nielsen Diana H. Wall Grace Li Manuel Toro Byron J. Adams Ross A. Virginia |
spellingShingle |
Uffe N. Nielsen Diana H. Wall Grace Li Manuel Toro Byron J. Adams Ross A. Virginia Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica |
author_facet |
Uffe N. Nielsen Diana H. Wall Grace Li Manuel Toro Byron J. Adams Ross A. Virginia |
author_sort |
Uffe N. Nielsen |
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 |
publishDate |
2010 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.663.8304 http://adamslab.byu.edu/Portals/74/docs/Papers/Antarctic+Science+2011+Nielsen.pdf |
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 |
geographic_facet |
Antarctic Byers Byers peninsula Livingston Island |
genre |
Antarc* Antarctic Antarctic Science Antarctica Livingston Island Rotifer Tardigrade |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Livingston Island Rotifer Tardigrade |
op_source |
http://adamslab.byu.edu/Portals/74/docs/Papers/Antarctic+Science+2011+Nielsen.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.663.8304 http://adamslab.byu.edu/Portals/74/docs/Papers/Antarctic+Science+2011+Nielsen.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766107523489726464 |