Population differentiation of the Stellaria longipes complex within Saskatchewan's Athabasca sand dunes
Stellaria arenicola, a recent derivative within the S. longipes complex, is an endemic of the Athabasca sand dunes. Analysis of 11 morphological characters on 40 genets showed that both the endemic and parental (S. longipes) species are present within the Thomson Bay dune field and that the two form...
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1987
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crcansciencepubl:10.1139/b87-235 2023-12-17T10:33:05+01:00 Population differentiation of the Stellaria longipes complex within Saskatchewan's Athabasca sand dunes Macdonald, S. Ellen Chinnappa, C. C. Reid, David M. Purdy, Brett G. 1987 http://dx.doi.org/10.1139/b87-235 http://www.nrcresearchpress.com/doi/pdf/10.1139/b87-235 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 65, issue 8, page 1726-1732 ISSN 0008-4026 Plant Science journal-article 1987 crcansciencepubl https://doi.org/10.1139/b87-235 2023-11-19T13:39:38Z Stellaria arenicola, a recent derivative within the S. longipes complex, is an endemic of the Athabasca sand dunes. Analysis of 11 morphological characters on 40 genets showed that both the endemic and parental (S. longipes) species are present within the Thomson Bay dune field and that the two forms are distinct. Individuals of S. arenicola were distinguished by only a few characters, typically, large yellow capsules with reflexed teeth and yellowish leaf and stem pigmentation. The endemic also exhibited a higher sexual reproductive output. Many characteristics of vegetative morphology showed plasticity in both species, but the two remained distinct when grown in a common garden. On the sand dunes S. longipes is restricted to beach dunes bordering Lake Athabasca while S. arenicola is predominant on the active dune field inland. The two dune systems represented environmentally distinct microhabitats. The active inner dunes were characterized by an unstable, fine sand substrate and intense insolation. Field reciprocal transplants showed S. longipes was selected against in the inner dune habitat, while S. arenicola performed relatively well on the beach. Stellaria arenicola possibly arose in the active sand dune habitat as a result of selection pressure and genetic isolation. Article in Journal/Newspaper Lake Athabasca Stellaria longipes Canadian Science Publishing (via Crossref) Canadian Journal of Botany 65 8 1726 1732 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Plant Science |
spellingShingle |
Plant Science Macdonald, S. Ellen Chinnappa, C. C. Reid, David M. Purdy, Brett G. Population differentiation of the Stellaria longipes complex within Saskatchewan's Athabasca sand dunes |
topic_facet |
Plant Science |
description |
Stellaria arenicola, a recent derivative within the S. longipes complex, is an endemic of the Athabasca sand dunes. Analysis of 11 morphological characters on 40 genets showed that both the endemic and parental (S. longipes) species are present within the Thomson Bay dune field and that the two forms are distinct. Individuals of S. arenicola were distinguished by only a few characters, typically, large yellow capsules with reflexed teeth and yellowish leaf and stem pigmentation. The endemic also exhibited a higher sexual reproductive output. Many characteristics of vegetative morphology showed plasticity in both species, but the two remained distinct when grown in a common garden. On the sand dunes S. longipes is restricted to beach dunes bordering Lake Athabasca while S. arenicola is predominant on the active dune field inland. The two dune systems represented environmentally distinct microhabitats. The active inner dunes were characterized by an unstable, fine sand substrate and intense insolation. Field reciprocal transplants showed S. longipes was selected against in the inner dune habitat, while S. arenicola performed relatively well on the beach. Stellaria arenicola possibly arose in the active sand dune habitat as a result of selection pressure and genetic isolation. |
format |
Article in Journal/Newspaper |
author |
Macdonald, S. Ellen Chinnappa, C. C. Reid, David M. Purdy, Brett G. |
author_facet |
Macdonald, S. Ellen Chinnappa, C. C. Reid, David M. Purdy, Brett G. |
author_sort |
Macdonald, S. Ellen |
title |
Population differentiation of the Stellaria longipes complex within Saskatchewan's Athabasca sand dunes |
title_short |
Population differentiation of the Stellaria longipes complex within Saskatchewan's Athabasca sand dunes |
title_full |
Population differentiation of the Stellaria longipes complex within Saskatchewan's Athabasca sand dunes |
title_fullStr |
Population differentiation of the Stellaria longipes complex within Saskatchewan's Athabasca sand dunes |
title_full_unstemmed |
Population differentiation of the Stellaria longipes complex within Saskatchewan's Athabasca sand dunes |
title_sort |
population differentiation of the stellaria longipes complex within saskatchewan's athabasca sand dunes |
publisher |
Canadian Science Publishing |
publishDate |
1987 |
url |
http://dx.doi.org/10.1139/b87-235 http://www.nrcresearchpress.com/doi/pdf/10.1139/b87-235 |
genre |
Lake Athabasca Stellaria longipes |
genre_facet |
Lake Athabasca Stellaria longipes |
op_source |
Canadian Journal of Botany volume 65, issue 8, page 1726-1732 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b87-235 |
container_title |
Canadian Journal of Botany |
container_volume |
65 |
container_issue |
8 |
container_start_page |
1726 |
op_container_end_page |
1732 |
_version_ |
1785586967170252800 |