Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer
Biomass allocation and growth by the clonal plant Acaena magellanica were characterized for three populations grazed by introduced reindeer on the subantarctic island of South Georgia. Annual growth markers (internode lengths) were used to divide each rhizome into current year's shoots, one-yea...
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Cambridge University Press
1996
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515210/ https://doi.org/10.1017/S0954102096000211 |
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ftnerc:oai:nora.nerc.ac.uk:515210 2023-05-15T14:14:51+02:00 Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer Moen, Jon Walton, David W.H. 1996-06 http://nora.nerc.ac.uk/id/eprint/515210/ https://doi.org/10.1017/S0954102096000211 unknown Cambridge University Press Moen, Jon; Walton, David W.H. orcid:0000-0002-7103-4043 . 1996 Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer. Antarctic Science, 8 (2). 147-154. https://doi.org/10.1017/S0954102096000211 <https://doi.org/10.1017/S0954102096000211> Botany Publication - Article PeerReviewed 1996 ftnerc https://doi.org/10.1017/S0954102096000211 2023-02-04T19:43:55Z Biomass allocation and growth by the clonal plant Acaena magellanica were characterized for three populations grazed by introduced reindeer on the subantarctic island of South Georgia. Annual growth markers (internode lengths) were used to divide each rhizome into current year's shoots, one-year-old and two-year-old rhizome segments. Total dry weights were significantly smaller in grazed than in ungrazed populations. Leaf biomass of current year's shoots was very much lower in grazed shoots. Rhizome length and number of leaves were less affected than dry weight by grazing, and the reindeer grazing thus seems to mainly influence biomass accumulation rather than morphology in Acaena. Interactions with Festuca contracta in both grazed and ungrazed areas were also studied in a two-year competition experiment. No apparent release of soil resources (as measured by an increase in plant growth) was apparent in plots where Festuca was removed, but the current year's shoots of Acaena were smaller and more numerous in these plots than in controls, especially in the ungrazed area. Article in Journal/Newspaper Antarctic Science Natural Environment Research Council: NERC Open Research Archive Antarctic Science 8 2 147 154 |
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Natural Environment Research Council: NERC Open Research Archive |
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unknown |
topic |
Botany |
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Botany Moen, Jon Walton, David W.H. Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer |
topic_facet |
Botany |
description |
Biomass allocation and growth by the clonal plant Acaena magellanica were characterized for three populations grazed by introduced reindeer on the subantarctic island of South Georgia. Annual growth markers (internode lengths) were used to divide each rhizome into current year's shoots, one-year-old and two-year-old rhizome segments. Total dry weights were significantly smaller in grazed than in ungrazed populations. Leaf biomass of current year's shoots was very much lower in grazed shoots. Rhizome length and number of leaves were less affected than dry weight by grazing, and the reindeer grazing thus seems to mainly influence biomass accumulation rather than morphology in Acaena. Interactions with Festuca contracta in both grazed and ungrazed areas were also studied in a two-year competition experiment. No apparent release of soil resources (as measured by an increase in plant growth) was apparent in plots where Festuca was removed, but the current year's shoots of Acaena were smaller and more numerous in these plots than in controls, especially in the ungrazed area. |
format |
Article in Journal/Newspaper |
author |
Moen, Jon Walton, David W.H. |
author_facet |
Moen, Jon Walton, David W.H. |
author_sort |
Moen, Jon |
title |
Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer |
title_short |
Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer |
title_full |
Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer |
title_fullStr |
Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer |
title_full_unstemmed |
Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer |
title_sort |
biomass allocation in a subantarctic clonal plant (acaena magellanica) under grazing by introduced reindeer |
publisher |
Cambridge University Press |
publishDate |
1996 |
url |
http://nora.nerc.ac.uk/id/eprint/515210/ https://doi.org/10.1017/S0954102096000211 |
genre |
Antarctic Science |
genre_facet |
Antarctic Science |
op_relation |
Moen, Jon; Walton, David W.H. orcid:0000-0002-7103-4043 . 1996 Biomass allocation in a subantarctic clonal plant (Acaena magellanica) under grazing by introduced reindeer. Antarctic Science, 8 (2). 147-154. https://doi.org/10.1017/S0954102096000211 <https://doi.org/10.1017/S0954102096000211> |
op_doi |
https://doi.org/10.1017/S0954102096000211 |
container_title |
Antarctic Science |
container_volume |
8 |
container_issue |
2 |
container_start_page |
147 |
op_container_end_page |
154 |
_version_ |
1766287224405491712 |