Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America
The presence of conflicts in the allocation of resources among the different functions of an organism is a fundamental postulate of modern ecology. It is assumed that reproduction occurs at a cost because it monopolizes resources that could be used for other functions (e.g., growth). These conflicts...
Published in: | American Journal of Botany |
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crwiley:10.2307/2446283 2024-06-23T07:53:07+00:00 Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America Despland, Emma Houle, Gilles Natural Sciences and Engineering Research Council of Canada 1997 http://dx.doi.org/10.2307/2446283 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F2446283 http://onlinelibrary.wiley.com/wol1/doi/10.2307/2446283/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor American Journal of Botany volume 84, issue 7, page 928-937 ISSN 0002-9122 1537-2197 journal-article 1997 crwiley https://doi.org/10.2307/2446283 2024-06-13T04:25:35Z The presence of conflicts in the allocation of resources among the different functions of an organism is a fundamental postulate of modern ecology. It is assumed that reproduction occurs at a cost because it monopolizes resources that could be used for other functions (e.g., growth). These conflicts may be particularly evident under stressful conditions, such as under low water or nutrient availability, or under severe climatic conditions. There we may expect to find strong negative relationships between an organism's growth and reproduction. We studied a population of Pinus banksiana (Pinaceae) at the northern limit of the species distribution, in subarctic Québec (Canada) where Pinus banksiana occupies nutrient‐poor, sandy terraces along the Great Whale river. Serotinous cones of Pinus banksiana produced between 1969 and 1992 were sampled to estimate interannual variations in several variables representing reproduction, and to relate these to climate and tree growth. Climate appears to influence each developmental stage involved in the production of viable seeds, from the time of cone initiation to that of seed maturation. In general, reproductive variables are positively related to high temperatures during the three growing seasons required for seed production; growth is also positively correlated to summer temperatures. Consequently, investment in maturing seeds is positively associated with growth. Thus, both reproduction and growth covary with climate: during relatively warm and long growing seasons, resource allocation to both functions increases. Under these conditions, no trade‐off is apparent. Article in Journal/Newspaper Great Whale River Subarctic Wiley Online Library Canada American Journal of Botany 84 7 928 937 |
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Wiley Online Library |
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crwiley |
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English |
description |
The presence of conflicts in the allocation of resources among the different functions of an organism is a fundamental postulate of modern ecology. It is assumed that reproduction occurs at a cost because it monopolizes resources that could be used for other functions (e.g., growth). These conflicts may be particularly evident under stressful conditions, such as under low water or nutrient availability, or under severe climatic conditions. There we may expect to find strong negative relationships between an organism's growth and reproduction. We studied a population of Pinus banksiana (Pinaceae) at the northern limit of the species distribution, in subarctic Québec (Canada) where Pinus banksiana occupies nutrient‐poor, sandy terraces along the Great Whale river. Serotinous cones of Pinus banksiana produced between 1969 and 1992 were sampled to estimate interannual variations in several variables representing reproduction, and to relate these to climate and tree growth. Climate appears to influence each developmental stage involved in the production of viable seeds, from the time of cone initiation to that of seed maturation. In general, reproductive variables are positively related to high temperatures during the three growing seasons required for seed production; growth is also positively correlated to summer temperatures. Consequently, investment in maturing seeds is positively associated with growth. Thus, both reproduction and growth covary with climate: during relatively warm and long growing seasons, resource allocation to both functions increases. Under these conditions, no trade‐off is apparent. |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Despland, Emma Houle, Gilles |
spellingShingle |
Despland, Emma Houle, Gilles Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America |
author_facet |
Despland, Emma Houle, Gilles |
author_sort |
Despland, Emma |
title |
Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America |
title_short |
Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America |
title_full |
Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America |
title_fullStr |
Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America |
title_full_unstemmed |
Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America |
title_sort |
climate influences on growth and reproduction of pinus banksiana (pinaceae) at the limit of the species distribution in eastern north america |
publisher |
Wiley |
publishDate |
1997 |
url |
http://dx.doi.org/10.2307/2446283 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F2446283 http://onlinelibrary.wiley.com/wol1/doi/10.2307/2446283/fullpdf |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Great Whale River Subarctic |
genre_facet |
Great Whale River Subarctic |
op_source |
American Journal of Botany volume 84, issue 7, page 928-937 ISSN 0002-9122 1537-2197 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2307/2446283 |
container_title |
American Journal of Botany |
container_volume |
84 |
container_issue |
7 |
container_start_page |
928 |
op_container_end_page |
937 |
_version_ |
1802644603212398592 |