Carbon exchange and primary production in a High-Arctic peatland in Svalbard
Moss tundra with a thick peat layer dominated by bryophytes is one of the most important ecosystems in the High Arctic of Svalbard, but little is known about the carbon dynamics of moss tundra. Here, we estimated the net primary production (NPP) and net ecosystem production (NEP) of moss tundra on B...
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Norwegian Polar Institute
2023
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ftjpolarres:oai:journals.openacademia.net:article/8541 2023-05-15T14:59:11+02:00 Carbon exchange and primary production in a High-Arctic peatland in Svalbard Nakatsubo, Takayuki Hirota, Mitsuru Kishimoto-Mo, Ayaka W. Oura, Noriko Uchida, Masaki 2023-03-30 text/html application/pdf application/epub+zip text/xml https://polarresearch.net/index.php/polar/article/view/8541 https://doi.org/10.33265/polar.v42.8541 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/8541/15486 https://polarresearch.net/index.php/polar/article/view/8541/15489 https://polarresearch.net/index.php/polar/article/view/8541/15487 https://polarresearch.net/index.php/polar/article/view/8541/15488 https://polarresearch.net/index.php/polar/article/view/8541/15490 https://polarresearch.net/index.php/polar/article/view/8541 doi:10.33265/polar.v42.8541 Copyright (c) 2023 Takayuki Nakatsubo, Mitsuru Hirota, Ayaka W. Kishimoto-Mo, Noriko Oura, Masaki Uchida https://creativecommons.org/licenses/by-nc/4.0 Polar Research; Vol. 42 (2023) 1751-8369 Carbon flow moss tundra photosynthesis respiration Calliergon richardsonii Tomenthypnum nitens info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftjpolarres https://doi.org/10.33265/polar.v42.8541 2023-04-05T22:50:57Z Moss tundra with a thick peat layer dominated by bryophytes is one of the most important ecosystems in the High Arctic of Svalbard, but little is known about the carbon dynamics of moss tundra. Here, we estimated the net primary production (NPP) and net ecosystem production (NEP) of moss tundra on Brøggerhalvøya (Brøgger Peninsula) of north-western Svalbard (79°N). The net photosynthetic and respiration rates of the two dominant moss species,Calliergon richardsoniiandTomenthypnum nitens, were measured under laboratory conditions. On the basis of the photosynthetic and respiration characteristics and climatic data, we estimated the cumulative NPP of the dominant moss species during the growing season to be 143–207 gC m-2. Net CO2exchange, which was determined by subtracting the respiration of the brown moss layer from NPP, was similar to that estimated using field gas flux measurements. The field measurements indicated that methane emissions contributed little to carbon flow. The NEP estimated in this study was much larger than the long-term carbon accumulation rate reported in a previous study. These data suggest that a significant amount of fixed carbon was lost from the peat layer or that carbon accumulation has recently increased. The NPP and NEP values of the moss tundra are larger than those reported for other vegetation types in this area, suggesting that moss tundra is an active site with high rates of carbon fixation. Article in Journal/Newspaper Arctic Polar Research Svalbard Tundra Polar Research (E-Journal) Arctic Brøggerhalvøya ENVELOPE(11.736,11.736,78.915,78.915) Svalbard Polar Research 42 |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Carbon flow moss tundra photosynthesis respiration Calliergon richardsonii Tomenthypnum nitens |
spellingShingle |
Carbon flow moss tundra photosynthesis respiration Calliergon richardsonii Tomenthypnum nitens Nakatsubo, Takayuki Hirota, Mitsuru Kishimoto-Mo, Ayaka W. Oura, Noriko Uchida, Masaki Carbon exchange and primary production in a High-Arctic peatland in Svalbard |
topic_facet |
Carbon flow moss tundra photosynthesis respiration Calliergon richardsonii Tomenthypnum nitens |
description |
Moss tundra with a thick peat layer dominated by bryophytes is one of the most important ecosystems in the High Arctic of Svalbard, but little is known about the carbon dynamics of moss tundra. Here, we estimated the net primary production (NPP) and net ecosystem production (NEP) of moss tundra on Brøggerhalvøya (Brøgger Peninsula) of north-western Svalbard (79°N). The net photosynthetic and respiration rates of the two dominant moss species,Calliergon richardsoniiandTomenthypnum nitens, were measured under laboratory conditions. On the basis of the photosynthetic and respiration characteristics and climatic data, we estimated the cumulative NPP of the dominant moss species during the growing season to be 143–207 gC m-2. Net CO2exchange, which was determined by subtracting the respiration of the brown moss layer from NPP, was similar to that estimated using field gas flux measurements. The field measurements indicated that methane emissions contributed little to carbon flow. The NEP estimated in this study was much larger than the long-term carbon accumulation rate reported in a previous study. These data suggest that a significant amount of fixed carbon was lost from the peat layer or that carbon accumulation has recently increased. The NPP and NEP values of the moss tundra are larger than those reported for other vegetation types in this area, suggesting that moss tundra is an active site with high rates of carbon fixation. |
format |
Article in Journal/Newspaper |
author |
Nakatsubo, Takayuki Hirota, Mitsuru Kishimoto-Mo, Ayaka W. Oura, Noriko Uchida, Masaki |
author_facet |
Nakatsubo, Takayuki Hirota, Mitsuru Kishimoto-Mo, Ayaka W. Oura, Noriko Uchida, Masaki |
author_sort |
Nakatsubo, Takayuki |
title |
Carbon exchange and primary production in a High-Arctic peatland in Svalbard |
title_short |
Carbon exchange and primary production in a High-Arctic peatland in Svalbard |
title_full |
Carbon exchange and primary production in a High-Arctic peatland in Svalbard |
title_fullStr |
Carbon exchange and primary production in a High-Arctic peatland in Svalbard |
title_full_unstemmed |
Carbon exchange and primary production in a High-Arctic peatland in Svalbard |
title_sort |
carbon exchange and primary production in a high-arctic peatland in svalbard |
publisher |
Norwegian Polar Institute |
publishDate |
2023 |
url |
https://polarresearch.net/index.php/polar/article/view/8541 https://doi.org/10.33265/polar.v42.8541 |
long_lat |
ENVELOPE(11.736,11.736,78.915,78.915) |
geographic |
Arctic Brøggerhalvøya Svalbard |
geographic_facet |
Arctic Brøggerhalvøya Svalbard |
genre |
Arctic Polar Research Svalbard Tundra |
genre_facet |
Arctic Polar Research Svalbard Tundra |
op_source |
Polar Research; Vol. 42 (2023) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/8541/15486 https://polarresearch.net/index.php/polar/article/view/8541/15489 https://polarresearch.net/index.php/polar/article/view/8541/15487 https://polarresearch.net/index.php/polar/article/view/8541/15488 https://polarresearch.net/index.php/polar/article/view/8541/15490 https://polarresearch.net/index.php/polar/article/view/8541 doi:10.33265/polar.v42.8541 |
op_rights |
Copyright (c) 2023 Takayuki Nakatsubo, Mitsuru Hirota, Ayaka W. Kishimoto-Mo, Noriko Oura, Masaki Uchida https://creativecommons.org/licenses/by-nc/4.0 |
op_doi |
https://doi.org/10.33265/polar.v42.8541 |
container_title |
Polar Research |
container_volume |
42 |
_version_ |
1766331308494028800 |