Influence of solar UV‐B radiation on peatland microbial communities of southern Argentinia
SUMMARY Stratospheric ozone depletion occurs over Tierra del Fuego, Argentina, in the austral spring and summer due to the Antarctic ‘ozone hole’ and the general erosion of the ozone layer. Thus, we investigated the responses of microbial communities to manipulations of solar UV‐B radiation. Results...
Published in: | New Phytologist |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2001
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1046/j.0028-646x.2001.00254.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.0028-646X.2001.00254.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1046/j.0028-646X.2001.00254.x |
id |
crwiley:10.1046/j.0028-646x.2001.00254.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1046/j.0028-646x.2001.00254.x 2024-09-15T17:42:58+00:00 Influence of solar UV‐B radiation on peatland microbial communities of southern Argentinia Searles, Peter S. Kropp, Bradley R. Flint, Stephan D. Caldwell, Martyn M. 2001 http://dx.doi.org/10.1046/j.0028-646x.2001.00254.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.0028-646X.2001.00254.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1046/j.0028-646X.2001.00254.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 http://onlinelibrary.wiley.com/termsAndConditions#vor New Phytologist volume 152, issue 2, page 213-221 ISSN 0028-646X 1469-8137 journal-article 2001 crwiley https://doi.org/10.1046/j.0028-646x.2001.00254.x 2024-08-09T04:22:23Z SUMMARY Stratospheric ozone depletion occurs over Tierra del Fuego, Argentina, in the austral spring and summer due to the Antarctic ‘ozone hole’ and the general erosion of the ozone layer. Thus, we investigated the responses of microbial communities to manipulations of solar UV‐B radiation. Results reported here are for field plots receiving either near‐ambient or reduced solar UV‐B using plastic filters in a Sphagnum peatland and a Carex fen during the second and third years of UV‐B manipulations. The total number of testate amoebae (Protozoa, Rhizopoda) inhabiting the upper centimeter of Sphagnum magellanicum was greater under near‐ambient solar UV‐B than under reduced UV‐B. No response to UV‐B manipulation was apparent for rotifers, nematodes, bacteria, microfungi, and a common microalga ( Euglena mutabilis ) inhabiting the S. magellanicum . On leaves of small Nothofagus antarctica trees, the ratio of upper: lower leaf‐surface fungal populations for the genus Aureobasidium and for total fungi indicated lower populations on the upper, relative to the lower, surface under near‐ambient solar UV‐B. When responses to modifications of the solar UV‐B flux were detected, these involved both direct UV‐B inhibition and indirect consequences of UV‐B manipulation. Article in Journal/Newspaper Antarc* Antarctic Antarctica Tierra del Fuego Wiley Online Library New Phytologist 152 2 213 221 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
SUMMARY Stratospheric ozone depletion occurs over Tierra del Fuego, Argentina, in the austral spring and summer due to the Antarctic ‘ozone hole’ and the general erosion of the ozone layer. Thus, we investigated the responses of microbial communities to manipulations of solar UV‐B radiation. Results reported here are for field plots receiving either near‐ambient or reduced solar UV‐B using plastic filters in a Sphagnum peatland and a Carex fen during the second and third years of UV‐B manipulations. The total number of testate amoebae (Protozoa, Rhizopoda) inhabiting the upper centimeter of Sphagnum magellanicum was greater under near‐ambient solar UV‐B than under reduced UV‐B. No response to UV‐B manipulation was apparent for rotifers, nematodes, bacteria, microfungi, and a common microalga ( Euglena mutabilis ) inhabiting the S. magellanicum . On leaves of small Nothofagus antarctica trees, the ratio of upper: lower leaf‐surface fungal populations for the genus Aureobasidium and for total fungi indicated lower populations on the upper, relative to the lower, surface under near‐ambient solar UV‐B. When responses to modifications of the solar UV‐B flux were detected, these involved both direct UV‐B inhibition and indirect consequences of UV‐B manipulation. |
format |
Article in Journal/Newspaper |
author |
Searles, Peter S. Kropp, Bradley R. Flint, Stephan D. Caldwell, Martyn M. |
spellingShingle |
Searles, Peter S. Kropp, Bradley R. Flint, Stephan D. Caldwell, Martyn M. Influence of solar UV‐B radiation on peatland microbial communities of southern Argentinia |
author_facet |
Searles, Peter S. Kropp, Bradley R. Flint, Stephan D. Caldwell, Martyn M. |
author_sort |
Searles, Peter S. |
title |
Influence of solar UV‐B radiation on peatland microbial communities of southern Argentinia |
title_short |
Influence of solar UV‐B radiation on peatland microbial communities of southern Argentinia |
title_full |
Influence of solar UV‐B radiation on peatland microbial communities of southern Argentinia |
title_fullStr |
Influence of solar UV‐B radiation on peatland microbial communities of southern Argentinia |
title_full_unstemmed |
Influence of solar UV‐B radiation on peatland microbial communities of southern Argentinia |
title_sort |
influence of solar uv‐b radiation on peatland microbial communities of southern argentinia |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1046/j.0028-646x.2001.00254.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.0028-646X.2001.00254.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1046/j.0028-646X.2001.00254.x |
genre |
Antarc* Antarctic Antarctica Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctica Tierra del Fuego |
op_source |
New Phytologist volume 152, issue 2, page 213-221 ISSN 0028-646X 1469-8137 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.0028-646x.2001.00254.x |
container_title |
New Phytologist |
container_volume |
152 |
container_issue |
2 |
container_start_page |
213 |
op_container_end_page |
221 |
_version_ |
1810489794039382016 |