Soil characteristics and decomposition of organic matter on Anchorage, Signy and Falkland Islands
Antarctic terrestrial ecosystems have poorly developed soils and currently experience one of the greatest rates of climate warming on the globe. We investigated the responsiveness of organic matter decomposition in Maritime Antarctic terrestrial ecosystems to climate change, using two study sites in...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.807660 2023-05-15T13:25:03+02:00 Soil characteristics and decomposition of organic matter on Anchorage, Signy and Falkland Islands Bokhorst, Stef Huiskes, Ad H L Convey, Peter Aerts, Raf MEDIAN LATITUDE: -60.615800 * MEDIAN LONGITUDE: -58.264200 * SOUTH-BOUND LATITUDE: -67.600000 * WEST-BOUND LONGITUDE: -68.200000 * NORTH-BOUND LATITUDE: -52.200000 * EAST-BOUND LONGITUDE: -45.630000 * DATE/TIME START: 2003-11-01T00:00:00 * DATE/TIME END: 2006-02-28T00:00:00 2007-02-20 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.807660 https://doi.org/10.1594/PANGAEA.807660 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.807660 https://doi.org/10.1594/PANGAEA.807660 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Bokhorst, Stef; Huiskes, Ad H L; Convey, Peter; Aerts, Raf (2007): Climate change effects on organic matter decomposition rates in ecosystems from the Maritime Antarctic and Falkland Islands. Global Change Biology, 13(12), 2642-2653, https://doi.org/10.1111/j.1365-2486.2007.01468.x International Polar Year (2007-2008) IPY Dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.807660 https://doi.org/10.1111/j.1365-2486.2007.01468.x 2023-01-20T07:32:54Z Antarctic terrestrial ecosystems have poorly developed soils and currently experience one of the greatest rates of climate warming on the globe. We investigated the responsiveness of organic matter decomposition in Maritime Antarctic terrestrial ecosystems to climate change, using two study sites in the Antarctic Peninsula region (Anchorage Island, 67°S; Signy Island, 61°S), and contrasted the responses found with those at the cool temperate Falkland Islands (52°S). Our approach consisted of two complementary methods: (1) Laboratory measurements of decomposition at different temperatures (2, 6 and 10 °C) of plant material and soil organic matter from all three locations. (2) Field measurements at all three locations on the decomposition of soil organic matter, plant material and cellulose, both under natural conditions and under experimental warming (about 0.8 °C) achieved using open top chambers. Higher temperatures led to higher organic matter breakdown in the laboratory studies, indicating that decomposition in Maritime Antarctic terrestrial ecosystems is likely to increase with increasing soil temperatures. However, both laboratory and field studies showed that decomposition was more strongly influenced by local substratum characteristics (especially soil N availability) and plant functional type composition than by large-scale temperature differences. The very small responsiveness of organic matter decomposition in the field (experimental temperature increase <1 °C) compared with the laboratory (experimental increases of 4 or 8 °C) shows that substantial warming is required before significant effects can be detected. Dataset Anchorage Island Antarc* Antarctic Antarctic Peninsula International Polar Year IPY Signy Island PANGAEA - Data Publisher for Earth & Environmental Science Antarctic The Antarctic Antarctic Peninsula Anchorage Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Anchorage Island ENVELOPE(-68.214,-68.214,-67.605,-67.605) ENVELOPE(-68.200000,-45.630000,-52.200000,-67.600000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
International Polar Year (2007-2008) IPY |
spellingShingle |
International Polar Year (2007-2008) IPY Bokhorst, Stef Huiskes, Ad H L Convey, Peter Aerts, Raf Soil characteristics and decomposition of organic matter on Anchorage, Signy and Falkland Islands |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
Antarctic terrestrial ecosystems have poorly developed soils and currently experience one of the greatest rates of climate warming on the globe. We investigated the responsiveness of organic matter decomposition in Maritime Antarctic terrestrial ecosystems to climate change, using two study sites in the Antarctic Peninsula region (Anchorage Island, 67°S; Signy Island, 61°S), and contrasted the responses found with those at the cool temperate Falkland Islands (52°S). Our approach consisted of two complementary methods: (1) Laboratory measurements of decomposition at different temperatures (2, 6 and 10 °C) of plant material and soil organic matter from all three locations. (2) Field measurements at all three locations on the decomposition of soil organic matter, plant material and cellulose, both under natural conditions and under experimental warming (about 0.8 °C) achieved using open top chambers. Higher temperatures led to higher organic matter breakdown in the laboratory studies, indicating that decomposition in Maritime Antarctic terrestrial ecosystems is likely to increase with increasing soil temperatures. However, both laboratory and field studies showed that decomposition was more strongly influenced by local substratum characteristics (especially soil N availability) and plant functional type composition than by large-scale temperature differences. The very small responsiveness of organic matter decomposition in the field (experimental temperature increase <1 °C) compared with the laboratory (experimental increases of 4 or 8 °C) shows that substantial warming is required before significant effects can be detected. |
format |
Dataset |
author |
Bokhorst, Stef Huiskes, Ad H L Convey, Peter Aerts, Raf |
author_facet |
Bokhorst, Stef Huiskes, Ad H L Convey, Peter Aerts, Raf |
author_sort |
Bokhorst, Stef |
title |
Soil characteristics and decomposition of organic matter on Anchorage, Signy and Falkland Islands |
title_short |
Soil characteristics and decomposition of organic matter on Anchorage, Signy and Falkland Islands |
title_full |
Soil characteristics and decomposition of organic matter on Anchorage, Signy and Falkland Islands |
title_fullStr |
Soil characteristics and decomposition of organic matter on Anchorage, Signy and Falkland Islands |
title_full_unstemmed |
Soil characteristics and decomposition of organic matter on Anchorage, Signy and Falkland Islands |
title_sort |
soil characteristics and decomposition of organic matter on anchorage, signy and falkland islands |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.807660 https://doi.org/10.1594/PANGAEA.807660 |
op_coverage |
MEDIAN LATITUDE: -60.615800 * MEDIAN LONGITUDE: -58.264200 * SOUTH-BOUND LATITUDE: -67.600000 * WEST-BOUND LONGITUDE: -68.200000 * NORTH-BOUND LATITUDE: -52.200000 * EAST-BOUND LONGITUDE: -45.630000 * DATE/TIME START: 2003-11-01T00:00:00 * DATE/TIME END: 2006-02-28T00:00:00 |
long_lat |
ENVELOPE(-45.595,-45.595,-60.708,-60.708) ENVELOPE(-68.214,-68.214,-67.605,-67.605) ENVELOPE(-68.200000,-45.630000,-52.200000,-67.600000) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Anchorage Signy Island Anchorage Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Anchorage Signy Island Anchorage Island |
genre |
Anchorage Island Antarc* Antarctic Antarctic Peninsula International Polar Year IPY Signy Island |
genre_facet |
Anchorage Island Antarc* Antarctic Antarctic Peninsula International Polar Year IPY Signy Island |
op_source |
Supplement to: Bokhorst, Stef; Huiskes, Ad H L; Convey, Peter; Aerts, Raf (2007): Climate change effects on organic matter decomposition rates in ecosystems from the Maritime Antarctic and Falkland Islands. Global Change Biology, 13(12), 2642-2653, https://doi.org/10.1111/j.1365-2486.2007.01468.x |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.807660 https://doi.org/10.1594/PANGAEA.807660 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.807660 https://doi.org/10.1111/j.1365-2486.2007.01468.x |
_version_ |
1766383302057394176 |