Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches
This paper presents new lichenometric population data from the Antarctic Peninsula (67°S), and describes a new approach to lichen growth-rate calibration in locations where dated surfaces are extremely rare. We use historical aerial photography and field surveys to identify sites of former perennial...
Published in: | Geografiska Annaler: Series A, Physical Geography |
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ftnerc:oai:nora.nerc.ac.uk:9837 2023-05-15T13:03:48+02:00 Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches Golledge, Nicholas Everest, Jeremy Bradwell, Tom Johnson, Joanne 2010 text http://nora.nerc.ac.uk/id/eprint/9837/ https://nora.nerc.ac.uk/id/eprint/9837/1/Golledge_etal_2010_nora.pdf http://www3.interscience.wiley.com/journal/118504788/home en eng Wiley-Blackwell https://nora.nerc.ac.uk/id/eprint/9837/1/Golledge_etal_2010_nora.pdf Golledge, Nicholas; Everest, Jeremy; Bradwell, Tom; Johnson, Joanne orcid:0000-0003-4537-4447 . 2010 Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches. Geografiska Annaler Series A Physical Geography, 92 (1). 111-124. https://doi.org/10.1111/j.1468-0459.2010.00381.x <https://doi.org/10.1111/j.1468-0459.2010.00381.x> Publication - Article PeerReviewed 2010 ftnerc https://doi.org/10.1111/j.1468-0459.2010.00381.x 2023-02-04T19:26:18Z This paper presents new lichenometric population data from the Antarctic Peninsula (67°S), and describes a new approach to lichen growth-rate calibration in locations where dated surfaces are extremely rare. We use historical aerial photography and field surveys to identify sites of former perennial snowpatches where lichen populations now exist. As an independent check on lichen mortality by snowkill, and the timing of snow patch disappearance, we use a positive-degree day (PDD) approach based on monthly climate data from Rothera Research Station. We find that maximum growth rates for lichens <40 mm in diameter on Adelaide Island are around 0.8 mm/yr. Furthermore, we propose that our combined methodology may be more widely applicable to the Polar Regions where the construction of lichenometric dating (age-size) curves remains a problem. Article in Journal/Newspaper Adelaide Island Antarc* Antarctic Antarctic Peninsula Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Rothera ENVELOPE(-68.130,-68.130,-67.568,-67.568) Adelaide Island ENVELOPE(-68.914,-68.914,-67.762,-67.762) Rothera Research Station ENVELOPE(-68.129,-68.129,-67.566,-67.566) Geografiska Annaler: Series A, Physical Geography 92 1 111 124 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
This paper presents new lichenometric population data from the Antarctic Peninsula (67°S), and describes a new approach to lichen growth-rate calibration in locations where dated surfaces are extremely rare. We use historical aerial photography and field surveys to identify sites of former perennial snowpatches where lichen populations now exist. As an independent check on lichen mortality by snowkill, and the timing of snow patch disappearance, we use a positive-degree day (PDD) approach based on monthly climate data from Rothera Research Station. We find that maximum growth rates for lichens <40 mm in diameter on Adelaide Island are around 0.8 mm/yr. Furthermore, we propose that our combined methodology may be more widely applicable to the Polar Regions where the construction of lichenometric dating (age-size) curves remains a problem. |
format |
Article in Journal/Newspaper |
author |
Golledge, Nicholas Everest, Jeremy Bradwell, Tom Johnson, Joanne |
spellingShingle |
Golledge, Nicholas Everest, Jeremy Bradwell, Tom Johnson, Joanne Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches |
author_facet |
Golledge, Nicholas Everest, Jeremy Bradwell, Tom Johnson, Joanne |
author_sort |
Golledge, Nicholas |
title |
Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches |
title_short |
Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches |
title_full |
Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches |
title_fullStr |
Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches |
title_full_unstemmed |
Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches |
title_sort |
lichenometry on adelaide island, antarctic peninsula : size-frequency studies, growth rates and snowpatches |
publisher |
Wiley-Blackwell |
publishDate |
2010 |
url |
http://nora.nerc.ac.uk/id/eprint/9837/ https://nora.nerc.ac.uk/id/eprint/9837/1/Golledge_etal_2010_nora.pdf http://www3.interscience.wiley.com/journal/118504788/home |
long_lat |
ENVELOPE(-68.130,-68.130,-67.568,-67.568) ENVELOPE(-68.914,-68.914,-67.762,-67.762) ENVELOPE(-68.129,-68.129,-67.566,-67.566) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Rothera Adelaide Island Rothera Research Station |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Rothera Adelaide Island Rothera Research Station |
genre |
Adelaide Island Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Adelaide Island Antarc* Antarctic Antarctic Peninsula |
op_relation |
https://nora.nerc.ac.uk/id/eprint/9837/1/Golledge_etal_2010_nora.pdf Golledge, Nicholas; Everest, Jeremy; Bradwell, Tom; Johnson, Joanne orcid:0000-0003-4537-4447 . 2010 Lichenometry on Adelaide Island, Antarctic Peninsula : size-frequency studies, growth rates and snowpatches. Geografiska Annaler Series A Physical Geography, 92 (1). 111-124. https://doi.org/10.1111/j.1468-0459.2010.00381.x <https://doi.org/10.1111/j.1468-0459.2010.00381.x> |
op_doi |
https://doi.org/10.1111/j.1468-0459.2010.00381.x |
container_title |
Geografiska Annaler: Series A, Physical Geography |
container_volume |
92 |
container_issue |
1 |
container_start_page |
111 |
op_container_end_page |
124 |
_version_ |
1766346060043649024 |