Reproductive patterns of Betula pendula and B. pubescens coll. along a regional altitudinal gradient in northern Sweden
The Scandinavian birches have different distribution patterns Betula pendula reaches its upper tree limit at the bottom of the valleys in the Scandes, while B pubescens ssp pubescens extends above the B pendula limit, and merges into B pubescens ssp tortuosa at higher elevations In a 6 yr study I qu...
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crwiley:10.1111/j.1600-0587.1994.tb00077.x 2024-04-14T08:16:41+00:00 Reproductive patterns of Betula pendula and B. pubescens coll. along a regional altitudinal gradient in northern Sweden Holm, Stig‐Olov 1994 http://dx.doi.org/10.1111/j.1600-0587.1994.tb00077.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0587.1994.tb00077.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0587.1994.tb00077.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecography volume 17, issue 1, page 60-72 ISSN 0906-7590 1600-0587 Ecology, Evolution, Behavior and Systematics journal-article 1994 crwiley https://doi.org/10.1111/j.1600-0587.1994.tb00077.x 2024-03-19T10:53:38Z The Scandinavian birches have different distribution patterns Betula pendula reaches its upper tree limit at the bottom of the valleys in the Scandes, while B pubescens ssp pubescens extends above the B pendula limit, and merges into B pubescens ssp tortuosa at higher elevations In a 6 yr study I quantified the spatial and temporal variation in the reproduction of these species along a regional altitudinal gradient Betula pendula showed a steeper altitudinal decrease of seed germinability and seed germination rate than B pubescens coll Seed weight was strongly and positively correlated with altitude for B pubescens , but not for B pendula The proportion of seeds infected by gall midges Semudobia coll, was much higher in B pendula than in B pubescens coll especially in the mountain area All birch taxa showed large annual variations in quantity and quality of seeds The sapling density was higher in B pubescens ssp pubescens stands than in B pendula and B pubescens ssp tortuosa stands in the mountains The vegetative reproduction was about three times higher for B pubescens ssp tortuosa , than for the other two birches These results indicate that the altitudinal variation in reproduction among the birch taxa mirror their present distribution patterns Article in Journal/Newspaper Northern Sweden Wiley Online Library Ecography 17 1 60 72 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics Holm, Stig‐Olov Reproductive patterns of Betula pendula and B. pubescens coll. along a regional altitudinal gradient in northern Sweden |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
The Scandinavian birches have different distribution patterns Betula pendula reaches its upper tree limit at the bottom of the valleys in the Scandes, while B pubescens ssp pubescens extends above the B pendula limit, and merges into B pubescens ssp tortuosa at higher elevations In a 6 yr study I quantified the spatial and temporal variation in the reproduction of these species along a regional altitudinal gradient Betula pendula showed a steeper altitudinal decrease of seed germinability and seed germination rate than B pubescens coll Seed weight was strongly and positively correlated with altitude for B pubescens , but not for B pendula The proportion of seeds infected by gall midges Semudobia coll, was much higher in B pendula than in B pubescens coll especially in the mountain area All birch taxa showed large annual variations in quantity and quality of seeds The sapling density was higher in B pubescens ssp pubescens stands than in B pendula and B pubescens ssp tortuosa stands in the mountains The vegetative reproduction was about three times higher for B pubescens ssp tortuosa , than for the other two birches These results indicate that the altitudinal variation in reproduction among the birch taxa mirror their present distribution patterns |
format |
Article in Journal/Newspaper |
author |
Holm, Stig‐Olov |
author_facet |
Holm, Stig‐Olov |
author_sort |
Holm, Stig‐Olov |
title |
Reproductive patterns of Betula pendula and B. pubescens coll. along a regional altitudinal gradient in northern Sweden |
title_short |
Reproductive patterns of Betula pendula and B. pubescens coll. along a regional altitudinal gradient in northern Sweden |
title_full |
Reproductive patterns of Betula pendula and B. pubescens coll. along a regional altitudinal gradient in northern Sweden |
title_fullStr |
Reproductive patterns of Betula pendula and B. pubescens coll. along a regional altitudinal gradient in northern Sweden |
title_full_unstemmed |
Reproductive patterns of Betula pendula and B. pubescens coll. along a regional altitudinal gradient in northern Sweden |
title_sort |
reproductive patterns of betula pendula and b. pubescens coll. along a regional altitudinal gradient in northern sweden |
publisher |
Wiley |
publishDate |
1994 |
url |
http://dx.doi.org/10.1111/j.1600-0587.1994.tb00077.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0587.1994.tb00077.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0587.1994.tb00077.x |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Ecography volume 17, issue 1, page 60-72 ISSN 0906-7590 1600-0587 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-0587.1994.tb00077.x |
container_title |
Ecography |
container_volume |
17 |
container_issue |
1 |
container_start_page |
60 |
op_container_end_page |
72 |
_version_ |
1796315406435090432 |