Nutrient limitations to plant production in two tundra communities
Nitrogen and phosphorus nutrition were investigated as limiting factors to primary production in a lowland wet sedge meadow and an upland birch–willow–heath community.Response to nitrogen fertilization in both communities, including increased protein content and dry weight production, indicates that...
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Canadian Science Publishing
1974
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Online Access: | http://dx.doi.org/10.1139/b74-014 http://www.nrcresearchpress.com/doi/pdf/10.1139/b74-014 |
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crcansciencepubl:10.1139/b74-014 2024-04-07T07:50:00+00:00 Nutrient limitations to plant production in two tundra communities Haag, Richard W. 1974 http://dx.doi.org/10.1139/b74-014 http://www.nrcresearchpress.com/doi/pdf/10.1139/b74-014 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 52, issue 1, page 103-116 ISSN 0008-4026 Plant Science journal-article 1974 crcansciencepubl https://doi.org/10.1139/b74-014 2024-03-08T00:37:39Z Nitrogen and phosphorus nutrition were investigated as limiting factors to primary production in a lowland wet sedge meadow and an upland birch–willow–heath community.Response to nitrogen fertilization in both communities, including increased protein content and dry weight production, indicates that nitrogen supply limits production in both soils. In the upland community, phosphorus supply does not limit production, but in the lowland sedge meadow, dilution of the soil solution may decrease phosphorus availability and render this element limiting to production.Nitrogen, if available, can be taken up and metabolized into organic compounds despite low soil temperatures. Phosphorus metabolism may be directly limited by low soil temperatures and low available nitrogen levels.Low soil temperature exerts an indirect limitation on plant production through limitation of organic matter decomposition and microbial nitrification, thus limiting the rate of nitrogen cycling.The importance of a low nutrient regime in the Arctic may be seen in the widespread occurrence of xeromorphic characters in many taxa, which thus require minimal mineral nutrition to best use their photosynthetic capacity. The low nutrient regime may partially explain the high proportion of perennial plants in the Arctic, since these species can accumulate a nutrient pool over time from a deficient environment. Article in Journal/Newspaper Arctic Tundra Canadian Science Publishing Arctic Canadian Journal of Botany 52 1 103 116 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
Plant Science |
spellingShingle |
Plant Science Haag, Richard W. Nutrient limitations to plant production in two tundra communities |
topic_facet |
Plant Science |
description |
Nitrogen and phosphorus nutrition were investigated as limiting factors to primary production in a lowland wet sedge meadow and an upland birch–willow–heath community.Response to nitrogen fertilization in both communities, including increased protein content and dry weight production, indicates that nitrogen supply limits production in both soils. In the upland community, phosphorus supply does not limit production, but in the lowland sedge meadow, dilution of the soil solution may decrease phosphorus availability and render this element limiting to production.Nitrogen, if available, can be taken up and metabolized into organic compounds despite low soil temperatures. Phosphorus metabolism may be directly limited by low soil temperatures and low available nitrogen levels.Low soil temperature exerts an indirect limitation on plant production through limitation of organic matter decomposition and microbial nitrification, thus limiting the rate of nitrogen cycling.The importance of a low nutrient regime in the Arctic may be seen in the widespread occurrence of xeromorphic characters in many taxa, which thus require minimal mineral nutrition to best use their photosynthetic capacity. The low nutrient regime may partially explain the high proportion of perennial plants in the Arctic, since these species can accumulate a nutrient pool over time from a deficient environment. |
format |
Article in Journal/Newspaper |
author |
Haag, Richard W. |
author_facet |
Haag, Richard W. |
author_sort |
Haag, Richard W. |
title |
Nutrient limitations to plant production in two tundra communities |
title_short |
Nutrient limitations to plant production in two tundra communities |
title_full |
Nutrient limitations to plant production in two tundra communities |
title_fullStr |
Nutrient limitations to plant production in two tundra communities |
title_full_unstemmed |
Nutrient limitations to plant production in two tundra communities |
title_sort |
nutrient limitations to plant production in two tundra communities |
publisher |
Canadian Science Publishing |
publishDate |
1974 |
url |
http://dx.doi.org/10.1139/b74-014 http://www.nrcresearchpress.com/doi/pdf/10.1139/b74-014 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_source |
Canadian Journal of Botany volume 52, issue 1, page 103-116 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b74-014 |
container_title |
Canadian Journal of Botany |
container_volume |
52 |
container_issue |
1 |
container_start_page |
103 |
op_container_end_page |
116 |
_version_ |
1795664526979366912 |