Determination of leaf area index, total foliar N, and normalized difference vegetation index for arctic ecosystems dominated by **Cassiope tetragona**
Abstract: 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 vegetat...
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Language: | English |
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2009
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ftunivantwerpen:c:irua:80311 2024-10-06T13:44:30+00:00 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://hdl.handle.net/10067/803110151162165141 eng eng info:eu-repo/semantics/altIdentifier/isi/000272503400003 info:eu-repo/semantics/altIdentifier/doi/10.1657/1938-4246-41.4.426 info:eu-repo/semantics/closedAccess 1523-0430 Arctic, antarctic, and alpine research: an interdisciplinary journal Biology info:eu-repo/semantics/article 2009 ftunivantwerpen https://doi.org/10.1657/1938-4246-41.4.426 2024-09-10T04:06:32Z Abstract: 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 IRUA - Institutional Repository van de Universiteit Antwerpen Arctic Greenland Svalbard Arctic, Antarctic, and Alpine Research 41 4 426 433 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Biology |
spellingShingle |
Biology 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 |
Biology |
description |
Abstract: 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://hdl.handle.net/10067/803110151162165141 |
geographic |
Arctic Greenland Svalbard |
geographic_facet |
Arctic Greenland Svalbard |
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 |
1523-0430 Arctic, antarctic, and alpine research: an interdisciplinary journal |
op_relation |
info:eu-repo/semantics/altIdentifier/isi/000272503400003 info:eu-repo/semantics/altIdentifier/doi/10.1657/1938-4246-41.4.426 |
op_rights |
info:eu-repo/semantics/closedAccess |
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_ |
1812182947451633664 |