Reproduction of Antarctic flowering plants
Reproductive allocation (reproductive biomass relative to vegetative biomass) and seed production were measured for samples of the two native phanerogams occurring in Antarctica. Material collected on South Georgia (subantarctic), Signy Island (northern maritime Antarctic) and Léonie Island (souther...
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Cambridge University Press (CUP)
1996
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Online Access: | http://dx.doi.org/10.1017/s0954102096000193 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102096000193 |
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crcambridgeupr:10.1017/s0954102096000193 2024-03-03T08:38:04+00:00 Reproduction of Antarctic flowering plants Convey, Peter 1996 http://dx.doi.org/10.1017/s0954102096000193 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102096000193 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 8, issue 2, page 127-134 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1996 crcambridgeupr https://doi.org/10.1017/s0954102096000193 2024-02-08T08:26:31Z Reproductive allocation (reproductive biomass relative to vegetative biomass) and seed production were measured for samples of the two native phanerogams occurring in Antarctica. Material collected on South Georgia (subantarctic), Signy Island (northern maritime Antarctic) and Léonie Island (southern maritime Antarctic) allowed an initial comparison of reproduction over a wide latitudinal range. Sizes of vegetative and reproductive structures of Colobanthus quitensis were smaller in Signy Island samples than those from South Georgia or Léonie Island. This pattern was reflected in the pattern of seed production. Vegetative and reproductive structures of Deschampsia antarctica were generally similar in size at both maritime Antarctic sites, but larger at subantarctic South Georgia. Seed production was similar in each season assessed and at all three sites. In most samples of both species there were close relationships between reproductive and vegetative biomass, and seed output and reproductive biomass. Subantartic C. quitensis showed greater allocation to seed production than material from maritime Antarctic sites. D. antarctica showed the reverse pattern, with greater allocation to reproductive biomass and seed production in most samples of maritime Antarctic material, particularly those from Signy Island. Reproductive strategies do not form any specific adaptation to the Antarctic environment for these species. Reasons for the failure of other higher plants to become established in the maritime Antarctic are discussed, and it is concluded that geographical isolation is the main factor. The most important proximate factors influencing propagules which reach potential colonization sites are likely to be the short length and low temperature of the summer season in relation to the time required for establishment. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Léonie Island Signy Island Cambridge University Press Antarctic The Antarctic Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Léonie ENVELOPE(-68.350,-68.350,-67.600,-67.600) Léonie Island ENVELOPE(-68.346,-68.346,-67.602,-67.602) Antarctic Science 8 2 127 134 |
institution |
Open Polar |
collection |
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 Convey, Peter Reproduction of Antarctic flowering plants |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Reproductive allocation (reproductive biomass relative to vegetative biomass) and seed production were measured for samples of the two native phanerogams occurring in Antarctica. Material collected on South Georgia (subantarctic), Signy Island (northern maritime Antarctic) and Léonie Island (southern maritime Antarctic) allowed an initial comparison of reproduction over a wide latitudinal range. Sizes of vegetative and reproductive structures of Colobanthus quitensis were smaller in Signy Island samples than those from South Georgia or Léonie Island. This pattern was reflected in the pattern of seed production. Vegetative and reproductive structures of Deschampsia antarctica were generally similar in size at both maritime Antarctic sites, but larger at subantarctic South Georgia. Seed production was similar in each season assessed and at all three sites. In most samples of both species there were close relationships between reproductive and vegetative biomass, and seed output and reproductive biomass. Subantartic C. quitensis showed greater allocation to seed production than material from maritime Antarctic sites. D. antarctica showed the reverse pattern, with greater allocation to reproductive biomass and seed production in most samples of maritime Antarctic material, particularly those from Signy Island. Reproductive strategies do not form any specific adaptation to the Antarctic environment for these species. Reasons for the failure of other higher plants to become established in the maritime Antarctic are discussed, and it is concluded that geographical isolation is the main factor. The most important proximate factors influencing propagules which reach potential colonization sites are likely to be the short length and low temperature of the summer season in relation to the time required for establishment. |
format |
Article in Journal/Newspaper |
author |
Convey, Peter |
author_facet |
Convey, Peter |
author_sort |
Convey, Peter |
title |
Reproduction of Antarctic flowering plants |
title_short |
Reproduction of Antarctic flowering plants |
title_full |
Reproduction of Antarctic flowering plants |
title_fullStr |
Reproduction of Antarctic flowering plants |
title_full_unstemmed |
Reproduction of Antarctic flowering plants |
title_sort |
reproduction of antarctic flowering plants |
publisher |
Cambridge University Press (CUP) |
publishDate |
1996 |
url |
http://dx.doi.org/10.1017/s0954102096000193 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102096000193 |
long_lat |
ENVELOPE(-45.595,-45.595,-60.708,-60.708) ENVELOPE(-68.350,-68.350,-67.600,-67.600) ENVELOPE(-68.346,-68.346,-67.602,-67.602) |
geographic |
Antarctic The Antarctic Signy Island Léonie Léonie Island |
geographic_facet |
Antarctic The Antarctic Signy Island Léonie Léonie Island |
genre |
Antarc* Antarctic Antarctic Science Antarctica Léonie Island Signy Island |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Léonie Island Signy Island |
op_source |
Antarctic Science volume 8, issue 2, page 127-134 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102096000193 |
container_title |
Antarctic Science |
container_volume |
8 |
container_issue |
2 |
container_start_page |
127 |
op_container_end_page |
134 |
_version_ |
1792504173300809728 |