Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska
Articulating the consequences of global climate change on terrestrial ecosystem biogeochemistry is a critical component of Arctic system studies. Leaf mineral nutrition responses of tundra plants is an important measure of changes in organismic and ecosystem attributes because leaf nitrogen and carb...
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crwiley:10.1111/j.0030-1299.2005.13264.x 2024-09-15T18:02:12+00:00 Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska Welker, J. M. Fahnestock, J. T. Sullivan, P. F. Chimner, R. A. 2005 http://dx.doi.org/10.1111/j.0030-1299.2005.13264.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0030-1299.2005.13264.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0030-1299.2005.13264.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Oikos volume 109, issue 1, page 167-177 ISSN 0030-1299 1600-0706 journal-article 2005 crwiley https://doi.org/10.1111/j.0030-1299.2005.13264.x 2024-08-22T04:15:48Z Articulating the consequences of global climate change on terrestrial ecosystem biogeochemistry is a critical component of Arctic system studies. Leaf mineral nutrition responses of tundra plants is an important measure of changes in organismic and ecosystem attributes because leaf nitrogen and carbon contents effect photosynthesis, primary production, carbon budgets, leaf litter, and soil organic matter decomposition as well as herbivore forage quality. In this study, we used a longterm experiment where snow depth and summer temperatures were increased independently and together to articulate how a series of climate change scenarios would affect leaf N, leaf C, and leaf C:N for vegetation in dry and moist tussock tundra in northern Alaska, USA. Our findings were: 1) moist tundra vegetation is much more responsive to this suite of climate change scenarios than dry tundra with up to a 25% increase in leaf N; 2) life forms exhibit divergence in leaf C, N, and C:N with deciduous shrubs and graminoids having almost identical leaf N contents; 3) for some species, leaf mineral nutrition responses to these climate change scenarios are tundra type dependent ( Betula ), but for others ( Vaccinium vitis‐idaea ), strong responses are exhibited regardless of tundra type; and 4) the seasonal patterns and magnitudes of leaf C and leaf N in deciduous and evergreen shrubs were responsive to conditions of deeper snow in winter. Leaf N is was generally higher immediately after emergence from the deep snow experimental treatments and leaf N was higher during the subsequent summer and fall, and the leaf C:N were lower, especially in deciduous shrubs. These findings indicate that coupled increases in snow depth and warmer summer temperatures will alter the magnitudes and patterns of leaf mineral nutrition and that the long term consequences of these changes may feed‐forward and affect ecosystem processes. Article in Journal/Newspaper Climate change Tundra Alaska Wiley Online Library Oikos 109 1 167 177 |
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Wiley Online Library |
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crwiley |
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English |
description |
Articulating the consequences of global climate change on terrestrial ecosystem biogeochemistry is a critical component of Arctic system studies. Leaf mineral nutrition responses of tundra plants is an important measure of changes in organismic and ecosystem attributes because leaf nitrogen and carbon contents effect photosynthesis, primary production, carbon budgets, leaf litter, and soil organic matter decomposition as well as herbivore forage quality. In this study, we used a longterm experiment where snow depth and summer temperatures were increased independently and together to articulate how a series of climate change scenarios would affect leaf N, leaf C, and leaf C:N for vegetation in dry and moist tussock tundra in northern Alaska, USA. Our findings were: 1) moist tundra vegetation is much more responsive to this suite of climate change scenarios than dry tundra with up to a 25% increase in leaf N; 2) life forms exhibit divergence in leaf C, N, and C:N with deciduous shrubs and graminoids having almost identical leaf N contents; 3) for some species, leaf mineral nutrition responses to these climate change scenarios are tundra type dependent ( Betula ), but for others ( Vaccinium vitis‐idaea ), strong responses are exhibited regardless of tundra type; and 4) the seasonal patterns and magnitudes of leaf C and leaf N in deciduous and evergreen shrubs were responsive to conditions of deeper snow in winter. Leaf N is was generally higher immediately after emergence from the deep snow experimental treatments and leaf N was higher during the subsequent summer and fall, and the leaf C:N were lower, especially in deciduous shrubs. These findings indicate that coupled increases in snow depth and warmer summer temperatures will alter the magnitudes and patterns of leaf mineral nutrition and that the long term consequences of these changes may feed‐forward and affect ecosystem processes. |
format |
Article in Journal/Newspaper |
author |
Welker, J. M. Fahnestock, J. T. Sullivan, P. F. Chimner, R. A. |
spellingShingle |
Welker, J. M. Fahnestock, J. T. Sullivan, P. F. Chimner, R. A. Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska |
author_facet |
Welker, J. M. Fahnestock, J. T. Sullivan, P. F. Chimner, R. A. |
author_sort |
Welker, J. M. |
title |
Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska |
title_short |
Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska |
title_full |
Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska |
title_fullStr |
Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska |
title_full_unstemmed |
Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska |
title_sort |
leaf mineral nutrition of arctic plants in response to warming and deeper snow in northern alaska |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.0030-1299.2005.13264.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0030-1299.2005.13264.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0030-1299.2005.13264.x |
genre |
Climate change Tundra Alaska |
genre_facet |
Climate change Tundra Alaska |
op_source |
Oikos volume 109, issue 1, page 167-177 ISSN 0030-1299 1600-0706 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0030-1299.2005.13264.x |
container_title |
Oikos |
container_volume |
109 |
container_issue |
1 |
container_start_page |
167 |
op_container_end_page |
177 |
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1810439602377326592 |