Clonality increases with snow depth in the arctic dwarf shrub Empetrum hermaphroditum
PREMISE OF THE STUDY: Vegetative reproduction and spread through clonal growth plays an important role in arctic-alpine ecosystems with short cool growing seasons. Local variation in winter snow accumulation leads to discrete habitat types that may provide divergent conditions for sexual and vegetat...
Published in: | American Journal of Botany |
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Botanical Society of America, St. Louis, MO
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Online Access: | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=18136 https://doi.org/10.3732/ajb.1600229 |
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ftufz:oai:ufz.de:18136 2023-12-10T09:45:35+01:00 Clonality increases with snow depth in the arctic dwarf shrub Empetrum hermaphroditum Bienau, M.J. Eckstein, R.L. Otte, A. Durka, Walter 2016-12-05 application/pdf https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=18136 https://doi.org/10.3732/ajb.1600229 en eng Botanical Society of America, St. Louis, MO American Journal of Botany 103 (12);; 2105 - 2114 https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=18136 https://dx.doi.org/10.3732/ajb.1600229 info:eu-repo/semantics/openAccess ISSN: 0002-9122 clonal structure evergreen dwarf shrub Ericaceae small-scale spatial genetic structure snow cover gradient subarctic info:eu-repo/semantics/article https://purl.org/dc/dcmitype/Text 2016 ftufz https://doi.org/10.3732/ajb.1600229 2023-11-12T23:34:05Z PREMISE OF THE STUDY: Vegetative reproduction and spread through clonal growth plays an important role in arctic-alpine ecosystems with short cool growing seasons. Local variation in winter snow accumulation leads to discrete habitat types that may provide divergent conditions for sexual and vegetative reproduction. Therefore, we studied variation in clonal structure of a dominant, evergreen, dwarf shrub (Empetrum nigrum s.l. with the two taxa E. nigrum L. s.s. and E. hermaphroditum Hagerup) along a snow cover gradient and compared clonal diversity and spatial genetic structure between habitats. METHODS: We studied 374 individual shoots using 105 polymorphic AFLP markers and analyses based on hierarchical clustering, clonal diversity indices, and small-scale spatial genetic structure with pairwise kinship coefficient. We used two approaches to define a threshold of genotypic distance between two samples that are considered the same clone. Clonality was examined among three habitats (exposed ridges, sheltered depressions, birch forest) differing in snow conditions replicated in four study regions in Norway and Sweden. KEY RESULTS: Clonality of E. hermaphroditum differed between habitats with an increase in clonal diversity with decreasing snow depth. Small-scale spatial genetic structure increased with decreasing clonal diversity and increasing clone size. In three study regions, E. hermaphroditum was the only species, whereas in one region E. nigrum also occurred, largely confined to exposed ridges. CONCLUSIONS: Our results demonstrated that snow cover in conjunction with associated habitat conditions plays an important role for the mode of propagation of the dwarf shrub E. hermaphroditum. Article in Journal/Newspaper Arctic Empetrum nigrum Subarctic UFZ - Publication Index (Helmholtz-Centre for Environmental Research) Arctic Norway American Journal of Botany 103 12 2105 2114 |
institution |
Open Polar |
collection |
UFZ - Publication Index (Helmholtz-Centre for Environmental Research) |
op_collection_id |
ftufz |
language |
English |
topic |
clonal structure evergreen dwarf shrub Ericaceae small-scale spatial genetic structure snow cover gradient subarctic |
spellingShingle |
clonal structure evergreen dwarf shrub Ericaceae small-scale spatial genetic structure snow cover gradient subarctic Bienau, M.J. Eckstein, R.L. Otte, A. Durka, Walter Clonality increases with snow depth in the arctic dwarf shrub Empetrum hermaphroditum |
topic_facet |
clonal structure evergreen dwarf shrub Ericaceae small-scale spatial genetic structure snow cover gradient subarctic |
description |
PREMISE OF THE STUDY: Vegetative reproduction and spread through clonal growth plays an important role in arctic-alpine ecosystems with short cool growing seasons. Local variation in winter snow accumulation leads to discrete habitat types that may provide divergent conditions for sexual and vegetative reproduction. Therefore, we studied variation in clonal structure of a dominant, evergreen, dwarf shrub (Empetrum nigrum s.l. with the two taxa E. nigrum L. s.s. and E. hermaphroditum Hagerup) along a snow cover gradient and compared clonal diversity and spatial genetic structure between habitats. METHODS: We studied 374 individual shoots using 105 polymorphic AFLP markers and analyses based on hierarchical clustering, clonal diversity indices, and small-scale spatial genetic structure with pairwise kinship coefficient. We used two approaches to define a threshold of genotypic distance between two samples that are considered the same clone. Clonality was examined among three habitats (exposed ridges, sheltered depressions, birch forest) differing in snow conditions replicated in four study regions in Norway and Sweden. KEY RESULTS: Clonality of E. hermaphroditum differed between habitats with an increase in clonal diversity with decreasing snow depth. Small-scale spatial genetic structure increased with decreasing clonal diversity and increasing clone size. In three study regions, E. hermaphroditum was the only species, whereas in one region E. nigrum also occurred, largely confined to exposed ridges. CONCLUSIONS: Our results demonstrated that snow cover in conjunction with associated habitat conditions plays an important role for the mode of propagation of the dwarf shrub E. hermaphroditum. |
format |
Article in Journal/Newspaper |
author |
Bienau, M.J. Eckstein, R.L. Otte, A. Durka, Walter |
author_facet |
Bienau, M.J. Eckstein, R.L. Otte, A. Durka, Walter |
author_sort |
Bienau, M.J. |
title |
Clonality increases with snow depth in the arctic dwarf shrub Empetrum hermaphroditum |
title_short |
Clonality increases with snow depth in the arctic dwarf shrub Empetrum hermaphroditum |
title_full |
Clonality increases with snow depth in the arctic dwarf shrub Empetrum hermaphroditum |
title_fullStr |
Clonality increases with snow depth in the arctic dwarf shrub Empetrum hermaphroditum |
title_full_unstemmed |
Clonality increases with snow depth in the arctic dwarf shrub Empetrum hermaphroditum |
title_sort |
clonality increases with snow depth in the arctic dwarf shrub empetrum hermaphroditum |
publisher |
Botanical Society of America, St. Louis, MO |
publishDate |
2016 |
url |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=18136 https://doi.org/10.3732/ajb.1600229 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Empetrum nigrum Subarctic |
genre_facet |
Arctic Empetrum nigrum Subarctic |
op_source |
ISSN: 0002-9122 |
op_relation |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=18136 https://dx.doi.org/10.3732/ajb.1600229 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3732/ajb.1600229 |
container_title |
American Journal of Botany |
container_volume |
103 |
container_issue |
12 |
container_start_page |
2105 |
op_container_end_page |
2114 |
_version_ |
1784888868521115648 |