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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ftdoajarticles:oai:doaj.org/article:374e0fe848d149c0ab70247b40310e29 2023-05-15T14:59:20+02:00 Carbon exchange and primary production in a High-Arctic peatland in Svalbard Takayuki Nakatsubo Mitsuru Hirota Ayaka W. Kishimoto-Mo Noriko Oura Masaki Uchida 2023-03-01T00:00:00Z https://doi.org/10.33265/polar.v42.8541 https://doaj.org/article/374e0fe848d149c0ab70247b40310e29 EN eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/8541/15489 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 0800-0395 1751-8369 doi:10.33265/polar.v42.8541 https://doaj.org/article/374e0fe848d149c0ab70247b40310e29 Polar Research, Vol 42, Pp 1-11 (2023) carbon flow moss tundra photosynthesis respiration calliergon richardsonii tomenthypnum nitens Environmental sciences GE1-350 Oceanography GC1-1581 article 2023 ftdoajarticles https://doi.org/10.33265/polar.v42.8541 2023-04-09T00:30:38Z 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 richardsonii and Tomenthypnum 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 CO2 exchange, 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 Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Brøggerhalvøya ENVELOPE(11.736,11.736,78.915,78.915) Polar Research 42 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
carbon flow moss tundra photosynthesis respiration calliergon richardsonii tomenthypnum nitens Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
carbon flow moss tundra photosynthesis respiration calliergon richardsonii tomenthypnum nitens Environmental sciences GE1-350 Oceanography GC1-1581 Takayuki Nakatsubo Mitsuru Hirota Ayaka W. Kishimoto-Mo Noriko Oura Masaki Uchida Carbon exchange and primary production in a High-Arctic peatland in Svalbard |
topic_facet |
carbon flow moss tundra photosynthesis respiration calliergon richardsonii tomenthypnum nitens Environmental sciences GE1-350 Oceanography GC1-1581 |
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 richardsonii and Tomenthypnum 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 CO2 exchange, 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 |
Takayuki Nakatsubo Mitsuru Hirota Ayaka W. Kishimoto-Mo Noriko Oura Masaki Uchida |
author_facet |
Takayuki Nakatsubo Mitsuru Hirota Ayaka W. Kishimoto-Mo Noriko Oura Masaki Uchida |
author_sort |
Takayuki Nakatsubo |
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://doi.org/10.33265/polar.v42.8541 https://doaj.org/article/374e0fe848d149c0ab70247b40310e29 |
long_lat |
ENVELOPE(11.736,11.736,78.915,78.915) |
geographic |
Arctic Svalbard Brøggerhalvøya |
geographic_facet |
Arctic Svalbard Brøggerhalvøya |
genre |
Arctic Polar Research Svalbard Tundra |
genre_facet |
Arctic Polar Research Svalbard Tundra |
op_source |
Polar Research, Vol 42, Pp 1-11 (2023) |
op_relation |
https://polarresearch.net/index.php/polar/article/view/8541/15489 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 0800-0395 1751-8369 doi:10.33265/polar.v42.8541 https://doaj.org/article/374e0fe848d149c0ab70247b40310e29 |
op_doi |
https://doi.org/10.33265/polar.v42.8541 |
container_title |
Polar Research |
container_volume |
42 |
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1766331448979095552 |