Usnea antarctica , an important Antarctic lichen, is vulnerable to aspects of regional environmental change
Studies of cryptogam responses to climate change in the polar regions are scarce because these slow-growing organisms require long-term monitoring studies. Here, we analyse the response of a lichen and moss community to 10 years of passive environmental manipulation using open-top chambers (OTCs) in...
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ftnioz:oai:imis.nioz.nl:254624 2023-05-15T13:47:57+02:00 Usnea antarctica , an important Antarctic lichen, is vulnerable to aspects of regional environmental change Bokhorst, S. Convey, P. Huiskes, A.H.L. Aerts, R. 2016 http://imis.nioz.nl/imis.php?module=ref&refid=254624 en eng info:eu-repo/semantics/altIdentifier/wos/000371640300008 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1007/s00300-015-1803-z http://imis.nioz.nl/imis.php?module=ref&refid=254624 info:eu-repo/semantics/closedAccess %3Ci%3EPolar+Biol.+39%283%29%3C%2Fi%3E%3A+511-521.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1007%2Fs00300-015-1803-z%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1007%2Fs00300-015-1803-z%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftnioz https://doi.org/10.1007/s00300-015-1803-z 2022-05-01T14:02:52Z Studies of cryptogam responses to climate change in the polar regions are scarce because these slow-growing organisms require long-term monitoring studies. Here, we analyse the response of a lichen and moss community to 10 years of passive environmental manipulation using open-top chambers (OTCs) in the maritime Antarctic region. Cover of the dominant lichen Usnea antarctica declined by 71 % in the OTCs. However, less dominant lichen species showed no significant responses except for an increase in Ochrolechia frigida, which typically covered dying lichen and moss vegetation. There were no detectable responses in the moss or associated micro-arthropod communities to the influence of the OTCs. Based on calculated respiration rates, we hypothesise that the decline of U. antarctica was most likely caused by increased net winter respiration rates (11 %), driven by the higher temperatures and lower light levels experienced inside the OTCs as a result of greater snow accumulation. During summer, U. antarctica appears unable to compensate for this increased carbon loss, leading to a negative carbon balance on an annual basis, and the lichen therefore appears to be vulnerable to such climate change simulations. These findings indicate that U. antarctica dominated fell-fields may change dramatically if current environmental change trends continue in the maritime Antarctic, especially if associated with increases in winter snow depth or duration. Article in Journal/Newspaper Antarc* Antarctic Antarctica Usnea antarctica NIOZ Repository (Royal Netherlands Institute for Sea Research) Antarctic Polar Biology 39 3 511 521 |
institution |
Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
description |
Studies of cryptogam responses to climate change in the polar regions are scarce because these slow-growing organisms require long-term monitoring studies. Here, we analyse the response of a lichen and moss community to 10 years of passive environmental manipulation using open-top chambers (OTCs) in the maritime Antarctic region. Cover of the dominant lichen Usnea antarctica declined by 71 % in the OTCs. However, less dominant lichen species showed no significant responses except for an increase in Ochrolechia frigida, which typically covered dying lichen and moss vegetation. There were no detectable responses in the moss or associated micro-arthropod communities to the influence of the OTCs. Based on calculated respiration rates, we hypothesise that the decline of U. antarctica was most likely caused by increased net winter respiration rates (11 %), driven by the higher temperatures and lower light levels experienced inside the OTCs as a result of greater snow accumulation. During summer, U. antarctica appears unable to compensate for this increased carbon loss, leading to a negative carbon balance on an annual basis, and the lichen therefore appears to be vulnerable to such climate change simulations. These findings indicate that U. antarctica dominated fell-fields may change dramatically if current environmental change trends continue in the maritime Antarctic, especially if associated with increases in winter snow depth or duration. |
format |
Article in Journal/Newspaper |
author |
Bokhorst, S. Convey, P. Huiskes, A.H.L. Aerts, R. |
spellingShingle |
Bokhorst, S. Convey, P. Huiskes, A.H.L. Aerts, R. Usnea antarctica , an important Antarctic lichen, is vulnerable to aspects of regional environmental change |
author_facet |
Bokhorst, S. Convey, P. Huiskes, A.H.L. Aerts, R. |
author_sort |
Bokhorst, S. |
title |
Usnea antarctica , an important Antarctic lichen, is vulnerable to aspects of regional environmental change |
title_short |
Usnea antarctica , an important Antarctic lichen, is vulnerable to aspects of regional environmental change |
title_full |
Usnea antarctica , an important Antarctic lichen, is vulnerable to aspects of regional environmental change |
title_fullStr |
Usnea antarctica , an important Antarctic lichen, is vulnerable to aspects of regional environmental change |
title_full_unstemmed |
Usnea antarctica , an important Antarctic lichen, is vulnerable to aspects of regional environmental change |
title_sort |
usnea antarctica , an important antarctic lichen, is vulnerable to aspects of regional environmental change |
publishDate |
2016 |
url |
http://imis.nioz.nl/imis.php?module=ref&refid=254624 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Usnea antarctica |
genre_facet |
Antarc* Antarctic Antarctica Usnea antarctica |
op_source |
%3Ci%3EPolar+Biol.+39%283%29%3C%2Fi%3E%3A+511-521.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1007%2Fs00300-015-1803-z%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1007%2Fs00300-015-1803-z%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000371640300008 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1007/s00300-015-1803-z http://imis.nioz.nl/imis.php?module=ref&refid=254624 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s00300-015-1803-z |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
3 |
container_start_page |
511 |
op_container_end_page |
521 |
_version_ |
1766248046085013504 |