Impacts of abiotic and biotic factors on tundra productivity near Utqiaġvik, Alaska
Earlier snowmelt, warmer temperatures and herbivory are among the factors that influence high-latitude tundra productivity near the town of Utqiaġvik in northern Alaska. However, our understanding of the potential interactions between these factors is limited. MODIS observations provide cover fracti...
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Online Access: | https://doi.org/10.1088/1748-9326/acf7d6 https://doaj.org/article/17b20a227b9a47f58c92ff4681f121c7 |
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ftdoajarticles:oai:doaj.org/article:17b20a227b9a47f58c92ff4681f121c7 2023-10-09T21:48:46+02:00 Impacts of abiotic and biotic factors on tundra productivity near Utqiaġvik, Alaska Qingyuan Zhang Xuesong Zhang Mark J Lara Zhengpeng Li Jingfeng Xiao Kaiguang Zhao Tongxi Hu 2023-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/acf7d6 https://doaj.org/article/17b20a227b9a47f58c92ff4681f121c7 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/acf7d6 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/acf7d6 1748-9326 https://doaj.org/article/17b20a227b9a47f58c92ff4681f121c7 Environmental Research Letters, Vol 18, Iss 9, p 094070 (2023) Arctic tundra earlier snowmelt warming lemming herbivory fAPARchl productivity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2023 ftdoajarticles https://doi.org/10.1088/1748-9326/acf7d6 2023-09-24T00:42:19Z Earlier snowmelt, warmer temperatures and herbivory are among the factors that influence high-latitude tundra productivity near the town of Utqiaġvik in northern Alaska. However, our understanding of the potential interactions between these factors is limited. MODIS observations provide cover fractions of vegetation, snow, standing water, and soil, and fractional absorption of photosynthetically active radiation by canopy chlorophyll (fAPAR _chl ) per pixel. Here, we evaluated a recent time-period (2001–2014) that the tundra experienced large interannual variability in vegetation productivity metrics (i.e. fAPAR _chl and APAR _chl ), which was explainable by both abiotic and biotic factors. We found earlier snowmelt to increase soil and vegetation cover, and productivity in June, while warmer temperatures significantly increased monthly productivity. However, abiotic factors failed to explain stark decreases in productivity during August of 2008, which coincided with a severe lemming outbreak. MODIS observations found this tundra ecosystem to completely recover two years later, resulting in elevated productivity. This study highlights the potential roles of both climate and herbivory in modulating the interannual variability of remotely retrieved plant productivity metrics in Arctic coastal tundra ecosystems. Article in Journal/Newspaper Arctic Tundra Alaska Directory of Open Access Journals: DOAJ Articles Arctic Environmental Research Letters 18 9 094070 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic tundra earlier snowmelt warming lemming herbivory fAPARchl productivity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
Arctic tundra earlier snowmelt warming lemming herbivory fAPARchl productivity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Qingyuan Zhang Xuesong Zhang Mark J Lara Zhengpeng Li Jingfeng Xiao Kaiguang Zhao Tongxi Hu Impacts of abiotic and biotic factors on tundra productivity near Utqiaġvik, Alaska |
topic_facet |
Arctic tundra earlier snowmelt warming lemming herbivory fAPARchl productivity Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Earlier snowmelt, warmer temperatures and herbivory are among the factors that influence high-latitude tundra productivity near the town of Utqiaġvik in northern Alaska. However, our understanding of the potential interactions between these factors is limited. MODIS observations provide cover fractions of vegetation, snow, standing water, and soil, and fractional absorption of photosynthetically active radiation by canopy chlorophyll (fAPAR _chl ) per pixel. Here, we evaluated a recent time-period (2001–2014) that the tundra experienced large interannual variability in vegetation productivity metrics (i.e. fAPAR _chl and APAR _chl ), which was explainable by both abiotic and biotic factors. We found earlier snowmelt to increase soil and vegetation cover, and productivity in June, while warmer temperatures significantly increased monthly productivity. However, abiotic factors failed to explain stark decreases in productivity during August of 2008, which coincided with a severe lemming outbreak. MODIS observations found this tundra ecosystem to completely recover two years later, resulting in elevated productivity. This study highlights the potential roles of both climate and herbivory in modulating the interannual variability of remotely retrieved plant productivity metrics in Arctic coastal tundra ecosystems. |
format |
Article in Journal/Newspaper |
author |
Qingyuan Zhang Xuesong Zhang Mark J Lara Zhengpeng Li Jingfeng Xiao Kaiguang Zhao Tongxi Hu |
author_facet |
Qingyuan Zhang Xuesong Zhang Mark J Lara Zhengpeng Li Jingfeng Xiao Kaiguang Zhao Tongxi Hu |
author_sort |
Qingyuan Zhang |
title |
Impacts of abiotic and biotic factors on tundra productivity near Utqiaġvik, Alaska |
title_short |
Impacts of abiotic and biotic factors on tundra productivity near Utqiaġvik, Alaska |
title_full |
Impacts of abiotic and biotic factors on tundra productivity near Utqiaġvik, Alaska |
title_fullStr |
Impacts of abiotic and biotic factors on tundra productivity near Utqiaġvik, Alaska |
title_full_unstemmed |
Impacts of abiotic and biotic factors on tundra productivity near Utqiaġvik, Alaska |
title_sort |
impacts of abiotic and biotic factors on tundra productivity near utqiaġvik, alaska |
publisher |
IOP Publishing |
publishDate |
2023 |
url |
https://doi.org/10.1088/1748-9326/acf7d6 https://doaj.org/article/17b20a227b9a47f58c92ff4681f121c7 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra Alaska |
genre_facet |
Arctic Tundra Alaska |
op_source |
Environmental Research Letters, Vol 18, Iss 9, p 094070 (2023) |
op_relation |
https://doi.org/10.1088/1748-9326/acf7d6 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/acf7d6 1748-9326 https://doaj.org/article/17b20a227b9a47f58c92ff4681f121c7 |
op_doi |
https://doi.org/10.1088/1748-9326/acf7d6 |
container_title |
Environmental Research Letters |
container_volume |
18 |
container_issue |
9 |
container_start_page |
094070 |
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1779311844937170944 |