Geographic variation and dispersal history in Fennoscandian populations of two forest herbs
Carex digitata and Melica nutans are forest understorey herbs with wide European distributions and their northern range margins in Fennoscandia. The species have closely similar habitat requirements, occur in small populations in old forest stands on base-rich to neutral soils and have restricted di...
Published in: | Plant Systematics and Evolution |
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Language: | English |
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Online Access: | https://lup.lub.lu.se/record/147163 https://doi.org/10.1007/s006060200054 |
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ftulundlup:oai:lup.lub.lu.se:ec6a7cb6-17c0-4722-86ad-686c3d7dcc23 2023-05-15T16:12:02+02:00 Geographic variation and dispersal history in Fennoscandian populations of two forest herbs Tyler, Torbjörn Prentice, Honor C Widén, Björn 2002 https://lup.lub.lu.se/record/147163 https://doi.org/10.1007/s006060200054 eng eng Springer https://lup.lub.lu.se/record/147163 http://dx.doi.org/10.1007/s006060200054 wos:000178597900004 scopus:0036751875 Plant Systematics and Evolution; 233(1-2), pp 47-64 (2002) ISSN: 1615-6110 Ecology contributiontojournal/article info:eu-repo/semantics/article text 2002 ftulundlup https://doi.org/10.1007/s006060200054 2023-02-01T23:32:37Z Carex digitata and Melica nutans are forest understorey herbs with wide European distributions and their northern range margins in Fennoscandia. The species have closely similar habitat requirements, occur in small populations in old forest stands on base-rich to neutral soils and have restricted dispersal abilities at the present day. This study investigates the structure of allozyme variation (12 and 8 loci, respectively) in material of both species (38 and 37 populations, respectively) from throughout southern Sweden and southern Finland. Both species show a relatively low overall genetic diversity (HT excluding monomorphic loci = 0.17 and 0.18, respectively). The hierarchic structuring of allelic diversity in the species is similar, with a relatively high between-population component of diversity (G(ST) = 0.36 and 0.37. respectively). Neither of the species shows a clear intraspecific pattern of geographic differentiation. The lack of large-scale patterns of geographic differentiation is not consistent with a simple scenario of discrete and independent waves of immigration into Fermoscandia. However, particularly in M. nutans, a group of populations from a lowland belt across southwestern Finland and southern central Sweden is somewhat differentiated from populations to the north and south. A number of rare alleles in both species are widely, but patchily distributed in low frequencies. Hybridization may account for the scattered occurence of some of the rare alleles in Carex digitata, but cannot explain the distribution of rare alleles in Melica nutans. Article in Journal/Newspaper Fennoscandia Fennoscandian Lund University Publications (LUP) Plant Systematics and Evolution 233 1-2 47 64 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology |
spellingShingle |
Ecology Tyler, Torbjörn Prentice, Honor C Widén, Björn Geographic variation and dispersal history in Fennoscandian populations of two forest herbs |
topic_facet |
Ecology |
description |
Carex digitata and Melica nutans are forest understorey herbs with wide European distributions and their northern range margins in Fennoscandia. The species have closely similar habitat requirements, occur in small populations in old forest stands on base-rich to neutral soils and have restricted dispersal abilities at the present day. This study investigates the structure of allozyme variation (12 and 8 loci, respectively) in material of both species (38 and 37 populations, respectively) from throughout southern Sweden and southern Finland. Both species show a relatively low overall genetic diversity (HT excluding monomorphic loci = 0.17 and 0.18, respectively). The hierarchic structuring of allelic diversity in the species is similar, with a relatively high between-population component of diversity (G(ST) = 0.36 and 0.37. respectively). Neither of the species shows a clear intraspecific pattern of geographic differentiation. The lack of large-scale patterns of geographic differentiation is not consistent with a simple scenario of discrete and independent waves of immigration into Fermoscandia. However, particularly in M. nutans, a group of populations from a lowland belt across southwestern Finland and southern central Sweden is somewhat differentiated from populations to the north and south. A number of rare alleles in both species are widely, but patchily distributed in low frequencies. Hybridization may account for the scattered occurence of some of the rare alleles in Carex digitata, but cannot explain the distribution of rare alleles in Melica nutans. |
format |
Article in Journal/Newspaper |
author |
Tyler, Torbjörn Prentice, Honor C Widén, Björn |
author_facet |
Tyler, Torbjörn Prentice, Honor C Widén, Björn |
author_sort |
Tyler, Torbjörn |
title |
Geographic variation and dispersal history in Fennoscandian populations of two forest herbs |
title_short |
Geographic variation and dispersal history in Fennoscandian populations of two forest herbs |
title_full |
Geographic variation and dispersal history in Fennoscandian populations of two forest herbs |
title_fullStr |
Geographic variation and dispersal history in Fennoscandian populations of two forest herbs |
title_full_unstemmed |
Geographic variation and dispersal history in Fennoscandian populations of two forest herbs |
title_sort |
geographic variation and dispersal history in fennoscandian populations of two forest herbs |
publisher |
Springer |
publishDate |
2002 |
url |
https://lup.lub.lu.se/record/147163 https://doi.org/10.1007/s006060200054 |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_source |
Plant Systematics and Evolution; 233(1-2), pp 47-64 (2002) ISSN: 1615-6110 |
op_relation |
https://lup.lub.lu.se/record/147163 http://dx.doi.org/10.1007/s006060200054 wos:000178597900004 scopus:0036751875 |
op_doi |
https://doi.org/10.1007/s006060200054 |
container_title |
Plant Systematics and Evolution |
container_volume |
233 |
container_issue |
1-2 |
container_start_page |
47 |
op_container_end_page |
64 |
_version_ |
1765997267942113280 |