The High–Low Arctic boundary : How is it determined and where is it located?
(2023) In Ecology and Evolution 13(10).- Abstract
Geobotanical subdivision of landcover is a baseline for many studies. The High–Low Arctic boundary is considered to be of fundamental natural importance. The wide application of different delimitation schemes in various ecological studies and climatic scenarios raises the following questions: (i) What are the common criteria to define the High and Low Arctic? (ii) Could human impact significantly change the distribution of the delimitation criteria? (iii) Is the widely accepted temperature criterion still relevant given ongoing climate change? and (iv) Could we locate the High–Low Arctic boundary by mapping these criteria derived from modern open remote sensing and climatic data? Researchers rely on common criteria for geobotanical... (More)
Geobotanical subdivision of landcover is a baseline for many studies. The High–Low Arctic boundary is considered to be of fundamental natural importance. The wide application of different delimitation schemes in various ecological studies and climatic scenarios raises the following questions: (i) What are the common criteria to define the High and Low Arctic? (ii) Could human impact significantly change the distribution of the delimitation criteria? (iii) Is the widely accepted temperature criterion still relevant given ongoing climate change? and (iv) Could we locate the High–Low Arctic boundary by mapping these criteria derived from modern open remote sensing and climatic data? Researchers rely on common criteria for geobotanical delimitation of the Arctic. Unified circumpolar criteria are based on the structure of vegetation cover and climate, while regional specifics are reflected in the floral composition. However, the published delimitation schemes vary greatly. The disagreement in the location of geobotanical boundaries across the studies manifests in poorly comparable results. While maintaining the common principles of geobotanical subdivision, we derived the boundary between the High and Low Arctic using the most up-to-date field data and modern techniques: species distribution modeling, radar, thermal and optical satellite imagery processing, and climatic data analysis. The position of the High–Low Arctic boundary in Western Siberia was clarified and mapped. The new boundary is located 50–100 km further north compared to all the previously presented ones. Long-term anthropogenic press contributes to a change in the vegetation structure but does not noticeably affect key species ranges. A previously specified climatic criterion for the High–Low Arctic boundary accepted in scientific literature has not coincided with the boundary in Western Siberia for over 70 years. The High–Low Arctic boundary is distinctly reflected in biodiversity distribution. The presented approach is appropriate for accurate mapping of the High–Low Arctic boundary in the circumpolar extent.
(Less)
- author
- Ermokhina, Ksenia A. ; Terskaia, Anna I. LU ; Ivleva, Tatiana Yu ; Dudov, Sergey V. ; Zemlianskii, Vitalii ; Telyatnikov, Michael Yu ; Khitun, Olga V. ; Troeva, Elena I. ; Koroleva, Natalia E. and Abdulmanova, Svetlana Yu
- organization
- publishing date
- 2023-10
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Arctic Vegetation Archive, biogeography and macroecology, ERA5, geobotanical boundaries, MODIS, plant–climate interactions, remote sensing data (Landsat), species distribution modeling (SDM), the High and Low Arctic, Western Siberia
- in
- Ecology and Evolution
- volume
- 13
- issue
- 10
- article number
- e10545
- publisher
- Wiley-Blackwell
- external identifiers
-
- pmid:37780086
- scopus:85173527596
- ISSN
- 2045-7758
- DOI
- 10.1002/ece3.10545
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: We thank every member of our expedition. We would also like to thank Vladimir Chepinoga for digitizing data on the Yamal local flora. The work was carried out under the Central Siberian Botanical Garden Siberian Branch RAS task (№ АААА-А21-121011100007-6) and the institutional research topic № 121032500047-1 of Komarov Botanical Institute RAS. Funding Information: This work is supported by a Swiss Government Excellence Scholarship (2019.0075). Publisher Copyright: © 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
- id
- 837741aa-22e2-436d-a8b0-0284e64fa048
- date added to LUP
- 2023-12-04 10:51:35
- date last changed
- 2024-10-31 02:53:20
@article{837741aa-22e2-436d-a8b0-0284e64fa048,
abstract = {{<p>Geobotanical subdivision of landcover is a baseline for many studies. The High–Low Arctic boundary is considered to be of fundamental natural importance. The wide application of different delimitation schemes in various ecological studies and climatic scenarios raises the following questions: (i) What are the common criteria to define the High and Low Arctic? (ii) Could human impact significantly change the distribution of the delimitation criteria? (iii) Is the widely accepted temperature criterion still relevant given ongoing climate change? and (iv) Could we locate the High–Low Arctic boundary by mapping these criteria derived from modern open remote sensing and climatic data? Researchers rely on common criteria for geobotanical delimitation of the Arctic. Unified circumpolar criteria are based on the structure of vegetation cover and climate, while regional specifics are reflected in the floral composition. However, the published delimitation schemes vary greatly. The disagreement in the location of geobotanical boundaries across the studies manifests in poorly comparable results. While maintaining the common principles of geobotanical subdivision, we derived the boundary between the High and Low Arctic using the most up-to-date field data and modern techniques: species distribution modeling, radar, thermal and optical satellite imagery processing, and climatic data analysis. The position of the High–Low Arctic boundary in Western Siberia was clarified and mapped. The new boundary is located 50–100 km further north compared to all the previously presented ones. Long-term anthropogenic press contributes to a change in the vegetation structure but does not noticeably affect key species ranges. A previously specified climatic criterion for the High–Low Arctic boundary accepted in scientific literature has not coincided with the boundary in Western Siberia for over 70 years. The High–Low Arctic boundary is distinctly reflected in biodiversity distribution. The presented approach is appropriate for accurate mapping of the High–Low Arctic boundary in the circumpolar extent.</p>}},
author = {{Ermokhina, Ksenia A. and Terskaia, Anna I. and Ivleva, Tatiana Yu and Dudov, Sergey V. and Zemlianskii, Vitalii and Telyatnikov, Michael Yu and Khitun, Olga V. and Troeva, Elena I. and Koroleva, Natalia E. and Abdulmanova, Svetlana Yu}},
issn = {{2045-7758}},
keywords = {{Arctic Vegetation Archive; biogeography and macroecology; ERA5; geobotanical boundaries; MODIS; plant–climate interactions; remote sensing data (Landsat); species distribution modeling (SDM); the High and Low Arctic; Western Siberia}},
language = {{eng}},
number = {{10}},
publisher = {{Wiley-Blackwell}},
series = {{Ecology and Evolution}},
title = {{The High–Low Arctic boundary : How is it determined and where is it located?}},
url = {{http://dx.doi.org/10.1002/ece3.10545}},
doi = {{10.1002/ece3.10545}},
volume = {{13}},
year = {{2023}},
}