Taxonomic status of the narrow endemic Astragalus robbinsii var fernaldii (Fernald's Milkvetch - Fabaceae): molecules, morphology, and implications for conservation
Astragalus robbinsii var. fernaldii (Fernald's Milkvetch) is a federally listed taxon of "special concern" due for re-assessment by COSEWIC. Restricted to the Strait of Belle Isle region of Atlantic Canada, its taxonomy in respect to two co-occurring congeners, Astragalus eucosmus and...
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ftunivottawa:oai:ruor.uottawa.ca:10393/28671 2023-05-15T18:27:31+02:00 Taxonomic status of the narrow endemic Astragalus robbinsii var fernaldii (Fernald's Milkvetch - Fabaceae): molecules, morphology, and implications for conservation Sokoloff, Paul C 2010 104 p. application/pdf http://hdl.handle.net/10393/28671 https://doi.org/10.20381/ruor-12661 en eng University of Ottawa (Canada) Source: Masters Abstracts International, Volume: 49-05, page: 3077. http://hdl.handle.net/10393/28671 http://dx.doi.org/10.20381/ruor-12661 Biology Systematic Thesis 2010 ftunivottawa https://doi.org/10.20381/ruor-12661 2021-01-04T17:09:33Z Astragalus robbinsii var. fernaldii (Fernald's Milkvetch) is a federally listed taxon of "special concern" due for re-assessment by COSEWIC. Restricted to the Strait of Belle Isle region of Atlantic Canada, its taxonomy in respect to two co-occurring congeners, Astragalus eucosmus and Astragalus robbinsii var. minor, has been questioned due to the variable states of the varieties' diagnostic characters. To clarify phylogenetic relationships within this species complex we studied variation in chloroplast DNA, AFLPs and morphology. Chloroplast DNA sequence data distinguished A. r. var. minor from A. eucosmus and most A. r. var. fernaldii. Three A. r. var. fernaldii populations possessed the A. r. var. minor haplotype, and AFLPs revealed no population structure, indicative of gene flow between taxa and populations. Morphometric analysis indicates that A. r. var. fernaldii is closer to A. eucosmus than A. r. var. minor. Based on these results taxonomic recognition of A. r. var. fernaldii is unwarranted, and we recommend that the taxon be merged into A. eucosmus. Thesis Strait of Belle Isle uO Research (University of Ottawa - uOttawa) Belle Isle ENVELOPE(-55.357,-55.357,51.942,51.942) Canada Strait of Belle Isle ENVELOPE(-57.115,-57.115,51.400,51.400) |
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uO Research (University of Ottawa - uOttawa) |
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ftunivottawa |
language |
English |
topic |
Biology Systematic |
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Biology Systematic Sokoloff, Paul C Taxonomic status of the narrow endemic Astragalus robbinsii var fernaldii (Fernald's Milkvetch - Fabaceae): molecules, morphology, and implications for conservation |
topic_facet |
Biology Systematic |
description |
Astragalus robbinsii var. fernaldii (Fernald's Milkvetch) is a federally listed taxon of "special concern" due for re-assessment by COSEWIC. Restricted to the Strait of Belle Isle region of Atlantic Canada, its taxonomy in respect to two co-occurring congeners, Astragalus eucosmus and Astragalus robbinsii var. minor, has been questioned due to the variable states of the varieties' diagnostic characters. To clarify phylogenetic relationships within this species complex we studied variation in chloroplast DNA, AFLPs and morphology. Chloroplast DNA sequence data distinguished A. r. var. minor from A. eucosmus and most A. r. var. fernaldii. Three A. r. var. fernaldii populations possessed the A. r. var. minor haplotype, and AFLPs revealed no population structure, indicative of gene flow between taxa and populations. Morphometric analysis indicates that A. r. var. fernaldii is closer to A. eucosmus than A. r. var. minor. Based on these results taxonomic recognition of A. r. var. fernaldii is unwarranted, and we recommend that the taxon be merged into A. eucosmus. |
format |
Thesis |
author |
Sokoloff, Paul C |
author_facet |
Sokoloff, Paul C |
author_sort |
Sokoloff, Paul C |
title |
Taxonomic status of the narrow endemic Astragalus robbinsii var fernaldii (Fernald's Milkvetch - Fabaceae): molecules, morphology, and implications for conservation |
title_short |
Taxonomic status of the narrow endemic Astragalus robbinsii var fernaldii (Fernald's Milkvetch - Fabaceae): molecules, morphology, and implications for conservation |
title_full |
Taxonomic status of the narrow endemic Astragalus robbinsii var fernaldii (Fernald's Milkvetch - Fabaceae): molecules, morphology, and implications for conservation |
title_fullStr |
Taxonomic status of the narrow endemic Astragalus robbinsii var fernaldii (Fernald's Milkvetch - Fabaceae): molecules, morphology, and implications for conservation |
title_full_unstemmed |
Taxonomic status of the narrow endemic Astragalus robbinsii var fernaldii (Fernald's Milkvetch - Fabaceae): molecules, morphology, and implications for conservation |
title_sort |
taxonomic status of the narrow endemic astragalus robbinsii var fernaldii (fernald's milkvetch - fabaceae): molecules, morphology, and implications for conservation |
publisher |
University of Ottawa (Canada) |
publishDate |
2010 |
url |
http://hdl.handle.net/10393/28671 https://doi.org/10.20381/ruor-12661 |
long_lat |
ENVELOPE(-55.357,-55.357,51.942,51.942) ENVELOPE(-57.115,-57.115,51.400,51.400) |
geographic |
Belle Isle Canada Strait of Belle Isle |
geographic_facet |
Belle Isle Canada Strait of Belle Isle |
genre |
Strait of Belle Isle |
genre_facet |
Strait of Belle Isle |
op_relation |
Source: Masters Abstracts International, Volume: 49-05, page: 3077. http://hdl.handle.net/10393/28671 http://dx.doi.org/10.20381/ruor-12661 |
op_doi |
https://doi.org/10.20381/ruor-12661 |
_version_ |
1766209628205481984 |