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 (CUP)
1996
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Online Access: | http://dx.doi.org/10.1017/s0954102096000211 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102096000211 |
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crcambridgeupr:10.1017/s0954102096000211 2024-03-03T08:39:25+00:00 Biomass allocation in a subantarctic clonal plant ( Acaena magellanica ) under grazing by introduced reindeer Moen, Jon Walton, David W.H. 1996 http://dx.doi.org/10.1017/s0954102096000211 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102096000211 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 8, issue 2, page 147-154 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1996 crcambridgeupr https://doi.org/10.1017/s0954102096000211 2024-02-08T08:39:16Z 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 Cambridge University Press Antarctic Science 8 2 147 154 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Moen, Jon Walton, David W.H. Biomass allocation in a subantarctic clonal plant ( Acaena magellanica ) under grazing by introduced reindeer |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
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 (CUP) |
publishDate |
1996 |
url |
http://dx.doi.org/10.1017/s0954102096000211 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102096000211 |
genre |
Antarctic Science |
genre_facet |
Antarctic Science |
op_source |
Antarctic Science volume 8, issue 2, page 147-154 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
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 |
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1792494946524069888 |