A High Arctic soil ecosystem resists long-term environmental manipulations
We evaluated above‐ and belowground ecosystem changes in a 16 year, combined fertilization and warming experiment in a High Arctic tundra deciduous shrub heath (Alexandra Fiord, Ellesmere Island, NU, Canada). Soil emissions of the three key greenhouse gases (GHGs) (carbon dioxide, methane, and nitro...
Main Authors: | , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley-Blackwell Publishing Ltd
2011
|
Subjects: | |
Online Access: | https://hdl.handle.net/1959.11/29414 |
id |
ftunivnewengland:oai:rune.une.edu.au:1959.11/29414 |
---|---|
record_format |
openpolar |
spelling |
ftunivnewengland:oai:rune.une.edu.au:1959.11/29414 2023-08-27T04:03:45+02:00 A High Arctic soil ecosystem resists long-term environmental manipulations Lamb, Eric G Han, Sukkyun Lanoil, Brian D Henry, Greg H R Brummell, Martin E School of Environmental and Rural Science Banerjee, Samiran Siciliano, Steven D 2011-10 https://hdl.handle.net/1959.11/29414 en eng Wiley-Blackwell Publishing Ltd 10.1111/j.1365-2486.2011.02431.x https://hdl.handle.net/1959.11/29414 une:1959.11/29414 Soil Biology Microbial Ecology Terrestrial Ecology Journal Article 2011 ftunivnewengland 2023-08-10T18:59:05Z We evaluated above‐ and belowground ecosystem changes in a 16 year, combined fertilization and warming experiment in a High Arctic tundra deciduous shrub heath (Alexandra Fiord, Ellesmere Island, NU, Canada). Soil emissions of the three key greenhouse gases (GHGs) (carbon dioxide, methane, and nitrous oxide) were measured in mid‐July 2009 using soil respiration chambers attached to a FTIR system. Soil chemical and biochemical properties including Q10 values for CO2, CH4, and N2O, Bacteria and Archaea assemblage composition, and the diversity and prevalence of key nitrogen cycling genes including bacterial amoA, crenarchaeal amoA, and nosZ were measured. Warming and fertilization caused strong increases in plant community cover and height but had limited effects on GHG fluxes and no substantial effect on soil chemistry or biochemistry. Similarly, there was a surprising lack of directional shifts in the soil microbial community as a whole or any change at all in microbial functional groups associated with CH4 consumption or N2O cycling in any treatment. Thus, it appears that while warming and increased nutrient availability have strongly affected the plant community over the last 16 years, the belowground ecosystem has not yet responded. This resistance of the soil ecosystem has resulted in limited changes in GHG fluxes in response to the experimental treatments. Article in Journal/Newspaper Alexandra Fiord Arctic Ellesmere Island Tundra Research UNE - University of New England at Armidale, NSW Australia Alexandra Fiord ENVELOPE(-75.797,-75.797,78.885,78.885) Arctic Canada Ellesmere Island |
institution |
Open Polar |
collection |
Research UNE - University of New England at Armidale, NSW Australia |
op_collection_id |
ftunivnewengland |
language |
English |
topic |
Soil Biology Microbial Ecology Terrestrial Ecology |
spellingShingle |
Soil Biology Microbial Ecology Terrestrial Ecology Lamb, Eric G Han, Sukkyun Lanoil, Brian D Henry, Greg H R Brummell, Martin E School of Environmental and Rural Science Banerjee, Samiran Siciliano, Steven D A High Arctic soil ecosystem resists long-term environmental manipulations |
topic_facet |
Soil Biology Microbial Ecology Terrestrial Ecology |
description |
We evaluated above‐ and belowground ecosystem changes in a 16 year, combined fertilization and warming experiment in a High Arctic tundra deciduous shrub heath (Alexandra Fiord, Ellesmere Island, NU, Canada). Soil emissions of the three key greenhouse gases (GHGs) (carbon dioxide, methane, and nitrous oxide) were measured in mid‐July 2009 using soil respiration chambers attached to a FTIR system. Soil chemical and biochemical properties including Q10 values for CO2, CH4, and N2O, Bacteria and Archaea assemblage composition, and the diversity and prevalence of key nitrogen cycling genes including bacterial amoA, crenarchaeal amoA, and nosZ were measured. Warming and fertilization caused strong increases in plant community cover and height but had limited effects on GHG fluxes and no substantial effect on soil chemistry or biochemistry. Similarly, there was a surprising lack of directional shifts in the soil microbial community as a whole or any change at all in microbial functional groups associated with CH4 consumption or N2O cycling in any treatment. Thus, it appears that while warming and increased nutrient availability have strongly affected the plant community over the last 16 years, the belowground ecosystem has not yet responded. This resistance of the soil ecosystem has resulted in limited changes in GHG fluxes in response to the experimental treatments. |
format |
Article in Journal/Newspaper |
author |
Lamb, Eric G Han, Sukkyun Lanoil, Brian D Henry, Greg H R Brummell, Martin E School of Environmental and Rural Science Banerjee, Samiran Siciliano, Steven D |
author_facet |
Lamb, Eric G Han, Sukkyun Lanoil, Brian D Henry, Greg H R Brummell, Martin E School of Environmental and Rural Science Banerjee, Samiran Siciliano, Steven D |
author_sort |
Lamb, Eric G |
title |
A High Arctic soil ecosystem resists long-term environmental manipulations |
title_short |
A High Arctic soil ecosystem resists long-term environmental manipulations |
title_full |
A High Arctic soil ecosystem resists long-term environmental manipulations |
title_fullStr |
A High Arctic soil ecosystem resists long-term environmental manipulations |
title_full_unstemmed |
A High Arctic soil ecosystem resists long-term environmental manipulations |
title_sort |
high arctic soil ecosystem resists long-term environmental manipulations |
publisher |
Wiley-Blackwell Publishing Ltd |
publishDate |
2011 |
url |
https://hdl.handle.net/1959.11/29414 |
long_lat |
ENVELOPE(-75.797,-75.797,78.885,78.885) |
geographic |
Alexandra Fiord Arctic Canada Ellesmere Island |
geographic_facet |
Alexandra Fiord Arctic Canada Ellesmere Island |
genre |
Alexandra Fiord Arctic Ellesmere Island Tundra |
genre_facet |
Alexandra Fiord Arctic Ellesmere Island Tundra |
op_relation |
10.1111/j.1365-2486.2011.02431.x https://hdl.handle.net/1959.11/29414 une:1959.11/29414 |
_version_ |
1775346663086358528 |