Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by Cassiope tetragona
Leaf area index (LAI) and total foliar nitrogen (TFN) are important canopy characteristics and crucial variables needed to simulate photosynthesis and ecosystem CO2 fluxes. Although plant communities dominated by Cassiope tetragona are widespread in the Arctic, LAI and TFN for this vegetation type h...
Published in: | Arctic, Antarctic, and Alpine Research |
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Online Access: | https://biblio.ugent.be/publication/898717 http://hdl.handle.net/1854/LU-898717 https://doi.org/10.1657/1938-4246-41.4.426 |
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ftunivgent:oai:archive.ugent.be:898717 2023-06-11T04:07:16+02:00 Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by Cassiope tetragona Campioli, Matteo Street, Lorna E Michelsen, Anders Shaver, Gaius R Maere, Thomas Samson, Roeland Lemeur, Raoul 2009 https://biblio.ugent.be/publication/898717 http://hdl.handle.net/1854/LU-898717 https://doi.org/10.1657/1938-4246-41.4.426 eng eng https://biblio.ugent.be/publication/898717 http://hdl.handle.net/1854/LU-898717 http://dx.doi.org/10.1657/1938-4246-41.4.426 ARCTIC ANTARCTIC AND ALPINE RESEARCH ISSN: 1523-0430 Earth and Environmental Sciences DWARF SHRUBS ENVIRONMENTAL PERTURBATIONS CO2 FLUX RESPONSES NUTRIENT EXCHANGE GROWTH PLANTS PRODUCTIVITY TEMPERATURE journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2009 ftunivgent https://doi.org/10.1657/1938-4246-41.4.426 2023-05-10T22:52:52Z Leaf area index (LAI) and total foliar nitrogen (TFN) are important canopy characteristics and crucial variables needed to simulate photosynthesis and ecosystem CO2 fluxes. Although plant communities dominated by Cassiope tetragona are widespread in the Arctic, LAI and TFN for this vegetation type have not been accurately quantified. We address this knowledge gap by (i) direct measurements of LAI and TFN for C tetragona, and (ii) determining TFN-LAI and LAI-normalized difference vegetation index (NDVI) relationships for typical C tetragona tundras in the subarctic (Sweden) and High Arctic (Greenland and Svalbard). Leaves of C tetragona are 2-6 mm long and closely appressed to their stems forming parallelepiped shoots. We determined the LAI of C tetragona by measuring the area of the leaves while still attached to the stem, then doubling the resulting one-sided area. TFN was determined from leaf N and biomass. The LAI-NDVI and TFN-LAI relationships showed high correlation and can be used to estimate indirectly LAI and TFN. The LAI-NDVI relationship for C tetragona vegetation differed from a generic LAI-NDVI relationship for arctic tundra, whereas the TFN-LAI relationship did not. Overall, the LAI of C tetragona tundra ranged from 0.4 to 1.1 m(2) m(-2) and TFN from 1.4 to 1.7 g N m(-2). Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Cassiope tetragona Greenland Subarctic Svalbard Tundra Ghent University Academic Bibliography Arctic Svalbard Greenland Arctic, Antarctic, and Alpine Research 41 4 426 433 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences DWARF SHRUBS ENVIRONMENTAL PERTURBATIONS CO2 FLUX RESPONSES NUTRIENT EXCHANGE GROWTH PLANTS PRODUCTIVITY TEMPERATURE |
spellingShingle |
Earth and Environmental Sciences DWARF SHRUBS ENVIRONMENTAL PERTURBATIONS CO2 FLUX RESPONSES NUTRIENT EXCHANGE GROWTH PLANTS PRODUCTIVITY TEMPERATURE Campioli, Matteo Street, Lorna E Michelsen, Anders Shaver, Gaius R Maere, Thomas Samson, Roeland Lemeur, Raoul Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by Cassiope tetragona |
topic_facet |
Earth and Environmental Sciences DWARF SHRUBS ENVIRONMENTAL PERTURBATIONS CO2 FLUX RESPONSES NUTRIENT EXCHANGE GROWTH PLANTS PRODUCTIVITY TEMPERATURE |
description |
Leaf area index (LAI) and total foliar nitrogen (TFN) are important canopy characteristics and crucial variables needed to simulate photosynthesis and ecosystem CO2 fluxes. Although plant communities dominated by Cassiope tetragona are widespread in the Arctic, LAI and TFN for this vegetation type have not been accurately quantified. We address this knowledge gap by (i) direct measurements of LAI and TFN for C tetragona, and (ii) determining TFN-LAI and LAI-normalized difference vegetation index (NDVI) relationships for typical C tetragona tundras in the subarctic (Sweden) and High Arctic (Greenland and Svalbard). Leaves of C tetragona are 2-6 mm long and closely appressed to their stems forming parallelepiped shoots. We determined the LAI of C tetragona by measuring the area of the leaves while still attached to the stem, then doubling the resulting one-sided area. TFN was determined from leaf N and biomass. The LAI-NDVI and TFN-LAI relationships showed high correlation and can be used to estimate indirectly LAI and TFN. The LAI-NDVI relationship for C tetragona vegetation differed from a generic LAI-NDVI relationship for arctic tundra, whereas the TFN-LAI relationship did not. Overall, the LAI of C tetragona tundra ranged from 0.4 to 1.1 m(2) m(-2) and TFN from 1.4 to 1.7 g N m(-2). |
format |
Article in Journal/Newspaper |
author |
Campioli, Matteo Street, Lorna E Michelsen, Anders Shaver, Gaius R Maere, Thomas Samson, Roeland Lemeur, Raoul |
author_facet |
Campioli, Matteo Street, Lorna E Michelsen, Anders Shaver, Gaius R Maere, Thomas Samson, Roeland Lemeur, Raoul |
author_sort |
Campioli, Matteo |
title |
Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by Cassiope tetragona |
title_short |
Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by Cassiope tetragona |
title_full |
Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by Cassiope tetragona |
title_fullStr |
Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by Cassiope tetragona |
title_full_unstemmed |
Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by Cassiope tetragona |
title_sort |
determination of leaf area index, total foliar n, and normalized difference vegetation index for arctic ecosystems dominated by cassiope tetragona |
publishDate |
2009 |
url |
https://biblio.ugent.be/publication/898717 http://hdl.handle.net/1854/LU-898717 https://doi.org/10.1657/1938-4246-41.4.426 |
geographic |
Arctic Svalbard Greenland |
geographic_facet |
Arctic Svalbard Greenland |
genre |
Antarctic and Alpine Research Arctic Arctic Cassiope tetragona Greenland Subarctic Svalbard Tundra |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Cassiope tetragona Greenland Subarctic Svalbard Tundra |
op_source |
ARCTIC ANTARCTIC AND ALPINE RESEARCH ISSN: 1523-0430 |
op_relation |
https://biblio.ugent.be/publication/898717 http://hdl.handle.net/1854/LU-898717 http://dx.doi.org/10.1657/1938-4246-41.4.426 |
op_doi |
https://doi.org/10.1657/1938-4246-41.4.426 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
41 |
container_issue |
4 |
container_start_page |
426 |
op_container_end_page |
433 |
_version_ |
1768380263614644224 |