Distribution of microarthropods across altitude and aspect in the sub-Antarctic: climate change implications for an isolated oceanic island
International audience Current climate change is altering the distribution of species across both broad and fine scales. Examining contemporary species distributions along altitudinal gradients is one approach to predicting species future distributions, as species occurrence patterns at cold, high a...
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fttriple:oai:gotriple.eu:10670/1.3z7ohz 2023-05-15T13:57:51+02:00 Distribution of microarthropods across altitude and aspect in the sub-Antarctic: climate change implications for an isolated oceanic island Hugo-Coetzee, Elizabeth A. Le Roux, Peter C. University of the Free State South Africa University of Pretoria 2018-01-01 https://doi.org/10.24349/acarologia/20184278 https://hal.archives-ouvertes.fr/hal-01883375/file/Acarologia-2018-58-43-60.pdf https://hal.archives-ouvertes.fr/hal-01883375 en eng HAL CCSD Acarologia hal-01883375 doi:10.24349/acarologia/20184278 10670/1.3z7ohz https://hal.archives-ouvertes.fr/hal-01883375/file/Acarologia-2018-58-43-60.pdf https://hal.archives-ouvertes.fr/hal-01883375 lic_creative-commons other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0044-586X EISSN: 2107-7207 Acarologia Acarologia, Acarologia, 2018, 58 (Suppl), pp.43-60. ⟨10.24349/acarologia/20184278⟩ sub-Antarctic Prince Edward Islands species richness environmental gradients Animalia Arthropoda Acari Azorella selago Collembola geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.24349/acarologia/20184278 2023-01-22T18:29:08Z International audience Current climate change is altering the distribution of species across both broad and fine scales. Examining contemporary species distributions along altitudinal gradients is one approach to predicting species future distributions, as species occurrence patterns at cold, high altitudes are expected to resemble the species distribution patterns currently observed at warmer, lower altitudes if warming occurs. Strong changes in climate have been observed in the sub-Antarctic over the last 50 years, with a 1.5 °C increase in mean temperature and a c. 30% decrease in mean precipitation recorded on Marion Island. In this study, the distribution patterns of mites and springtails inhabiting the cushion-plant Azorella selago were studied on Marion Island. Mite and springtail species richness and springtail abundance were significantly higher on the western aspect of the island, possibly due to higher rainfall and greater cloud cover on the windward side of the island. Mite abundance did not differ between aspects of the island, which may be due to the higher desiccation tolerance of mites. Mite and springtail species richness and springtail abundance were significantly lower at high altitudes coinciding with lower temperatures and generally harsher environment at higher altitudes. Plant characteristics generally did not contribute to explaining species patterns, suggesting that at the island-scale abiotic variables, rather than biotic factors, appeared to be the more important determinants of community structure. Therefore, despite species responding individualistically, it is clear that a warmer and drier climate will dramatically change the microarthropod community structure within A. selago on Marion Island. Article in Journal/Newspaper Antarc* Antarctic Marion Island Prince Edward Islands Mite Springtail Unknown Antarctic Acarologia 58 Suppl 43 60 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
sub-Antarctic Prince Edward Islands species richness environmental gradients Animalia Arthropoda Acari Azorella selago Collembola geo envir |
spellingShingle |
sub-Antarctic Prince Edward Islands species richness environmental gradients Animalia Arthropoda Acari Azorella selago Collembola geo envir Hugo-Coetzee, Elizabeth A. Le Roux, Peter C. Distribution of microarthropods across altitude and aspect in the sub-Antarctic: climate change implications for an isolated oceanic island |
topic_facet |
sub-Antarctic Prince Edward Islands species richness environmental gradients Animalia Arthropoda Acari Azorella selago Collembola geo envir |
description |
International audience Current climate change is altering the distribution of species across both broad and fine scales. Examining contemporary species distributions along altitudinal gradients is one approach to predicting species future distributions, as species occurrence patterns at cold, high altitudes are expected to resemble the species distribution patterns currently observed at warmer, lower altitudes if warming occurs. Strong changes in climate have been observed in the sub-Antarctic over the last 50 years, with a 1.5 °C increase in mean temperature and a c. 30% decrease in mean precipitation recorded on Marion Island. In this study, the distribution patterns of mites and springtails inhabiting the cushion-plant Azorella selago were studied on Marion Island. Mite and springtail species richness and springtail abundance were significantly higher on the western aspect of the island, possibly due to higher rainfall and greater cloud cover on the windward side of the island. Mite abundance did not differ between aspects of the island, which may be due to the higher desiccation tolerance of mites. Mite and springtail species richness and springtail abundance were significantly lower at high altitudes coinciding with lower temperatures and generally harsher environment at higher altitudes. Plant characteristics generally did not contribute to explaining species patterns, suggesting that at the island-scale abiotic variables, rather than biotic factors, appeared to be the more important determinants of community structure. Therefore, despite species responding individualistically, it is clear that a warmer and drier climate will dramatically change the microarthropod community structure within A. selago on Marion Island. |
author2 |
University of the Free State South Africa University of Pretoria |
format |
Article in Journal/Newspaper |
author |
Hugo-Coetzee, Elizabeth A. Le Roux, Peter C. |
author_facet |
Hugo-Coetzee, Elizabeth A. Le Roux, Peter C. |
author_sort |
Hugo-Coetzee, Elizabeth A. |
title |
Distribution of microarthropods across altitude and aspect in the sub-Antarctic: climate change implications for an isolated oceanic island |
title_short |
Distribution of microarthropods across altitude and aspect in the sub-Antarctic: climate change implications for an isolated oceanic island |
title_full |
Distribution of microarthropods across altitude and aspect in the sub-Antarctic: climate change implications for an isolated oceanic island |
title_fullStr |
Distribution of microarthropods across altitude and aspect in the sub-Antarctic: climate change implications for an isolated oceanic island |
title_full_unstemmed |
Distribution of microarthropods across altitude and aspect in the sub-Antarctic: climate change implications for an isolated oceanic island |
title_sort |
distribution of microarthropods across altitude and aspect in the sub-antarctic: climate change implications for an isolated oceanic island |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://doi.org/10.24349/acarologia/20184278 https://hal.archives-ouvertes.fr/hal-01883375/file/Acarologia-2018-58-43-60.pdf https://hal.archives-ouvertes.fr/hal-01883375 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Marion Island Prince Edward Islands Mite Springtail |
genre_facet |
Antarc* Antarctic Marion Island Prince Edward Islands Mite Springtail |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0044-586X EISSN: 2107-7207 Acarologia Acarologia, Acarologia, 2018, 58 (Suppl), pp.43-60. ⟨10.24349/acarologia/20184278⟩ |
op_relation |
hal-01883375 doi:10.24349/acarologia/20184278 10670/1.3z7ohz https://hal.archives-ouvertes.fr/hal-01883375/file/Acarologia-2018-58-43-60.pdf https://hal.archives-ouvertes.fr/hal-01883375 |
op_rights |
lic_creative-commons other |
op_doi |
https://doi.org/10.24349/acarologia/20184278 |
container_title |
Acarologia |
container_volume |
58 |
container_issue |
Suppl |
container_start_page |
43 |
op_container_end_page |
60 |
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1766265779191283712 |