Recent greening driven by species-specific shrub growth characteristics in Nunatsiavut, Labrador, Canada
Satellite remote sensing is a popular approach for identifying vegetation change in northern environments; however, disentangling ecological processes causing variability in spectral indices remains a challenge. Here, we aim to determine how shrub characteristics differ between low and rapidly green...
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Canadian Science Publishing
2021
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Online Access: | http://dx.doi.org/10.1139/as-2020-0031 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2020-0031 https://cdnsciencepub.com/doi/pdf/10.1139/as-2020-0031 |
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crcansciencepubl:10.1139/as-2020-0031 2023-12-17T10:22:56+01:00 Recent greening driven by species-specific shrub growth characteristics in Nunatsiavut, Labrador, Canada Larking, Taylor Davis, Emma Way, Robert Hermanutz, Luise Trant, Andrew 2021 http://dx.doi.org/10.1139/as-2020-0031 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2020-0031 https://cdnsciencepub.com/doi/pdf/10.1139/as-2020-0031 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Arctic Science volume 7, issue 4, page 781-797 ISSN 2368-7460 2368-7460 General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science journal-article 2021 crcansciencepubl https://doi.org/10.1139/as-2020-0031 2023-11-19T13:39:38Z Satellite remote sensing is a popular approach for identifying vegetation change in northern environments; however, disentangling ecological processes causing variability in spectral indices remains a challenge. Here, we aim to determine how shrub characteristics differ between low and rapidly greening areas near Nain, Nunatsiavut, Canada. Using a cross-scale approach, we combined remotely sensed spectral greening trends (Normalized Difference Vegetation Index; Landsat Collection 1, 1985–2018) with shrub dynamics derived from ring-widths of green alder (Alnus alnobetula (Ehrh.) K. Koch) and dwarf birch (Betula glandulosa Michx.). Differentiation of spectral greening classes appears to be driven by the distribution of shrub species. Alder were taller, grew faster, had more recent stem initiation than dwarf birch, and were dominant in rapid greening subplots. In low greening subplots, alder were co-dominant with dwarf birch, whose dominant stems initiated more gradually, were shorter, and had lower rates of vertical growth. The radial growth of both shrub species was favoured by warm winter temperatures and precipitation, whereas rapid greening alder was also favoured by warm summer temperatures. Further shrub growth will likely be enhanced under continued climate warming if moisture does not become limiting. This research demonstrates the importance of species identity in determining rates of spectral greening in northern environments. Article in Journal/Newspaper Arctic Dwarf birch Nain Canadian Science Publishing (via Crossref) Canada Nain ENVELOPE(-61.695,-61.695,56.542,56.542) Arctic Science |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science Larking, Taylor Davis, Emma Way, Robert Hermanutz, Luise Trant, Andrew Recent greening driven by species-specific shrub growth characteristics in Nunatsiavut, Labrador, Canada |
topic_facet |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
description |
Satellite remote sensing is a popular approach for identifying vegetation change in northern environments; however, disentangling ecological processes causing variability in spectral indices remains a challenge. Here, we aim to determine how shrub characteristics differ between low and rapidly greening areas near Nain, Nunatsiavut, Canada. Using a cross-scale approach, we combined remotely sensed spectral greening trends (Normalized Difference Vegetation Index; Landsat Collection 1, 1985–2018) with shrub dynamics derived from ring-widths of green alder (Alnus alnobetula (Ehrh.) K. Koch) and dwarf birch (Betula glandulosa Michx.). Differentiation of spectral greening classes appears to be driven by the distribution of shrub species. Alder were taller, grew faster, had more recent stem initiation than dwarf birch, and were dominant in rapid greening subplots. In low greening subplots, alder were co-dominant with dwarf birch, whose dominant stems initiated more gradually, were shorter, and had lower rates of vertical growth. The radial growth of both shrub species was favoured by warm winter temperatures and precipitation, whereas rapid greening alder was also favoured by warm summer temperatures. Further shrub growth will likely be enhanced under continued climate warming if moisture does not become limiting. This research demonstrates the importance of species identity in determining rates of spectral greening in northern environments. |
format |
Article in Journal/Newspaper |
author |
Larking, Taylor Davis, Emma Way, Robert Hermanutz, Luise Trant, Andrew |
author_facet |
Larking, Taylor Davis, Emma Way, Robert Hermanutz, Luise Trant, Andrew |
author_sort |
Larking, Taylor |
title |
Recent greening driven by species-specific shrub growth characteristics in Nunatsiavut, Labrador, Canada |
title_short |
Recent greening driven by species-specific shrub growth characteristics in Nunatsiavut, Labrador, Canada |
title_full |
Recent greening driven by species-specific shrub growth characteristics in Nunatsiavut, Labrador, Canada |
title_fullStr |
Recent greening driven by species-specific shrub growth characteristics in Nunatsiavut, Labrador, Canada |
title_full_unstemmed |
Recent greening driven by species-specific shrub growth characteristics in Nunatsiavut, Labrador, Canada |
title_sort |
recent greening driven by species-specific shrub growth characteristics in nunatsiavut, labrador, canada |
publisher |
Canadian Science Publishing |
publishDate |
2021 |
url |
http://dx.doi.org/10.1139/as-2020-0031 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2020-0031 https://cdnsciencepub.com/doi/pdf/10.1139/as-2020-0031 |
long_lat |
ENVELOPE(-61.695,-61.695,56.542,56.542) |
geographic |
Canada Nain |
geographic_facet |
Canada Nain |
genre |
Arctic Dwarf birch Nain |
genre_facet |
Arctic Dwarf birch Nain |
op_source |
Arctic Science volume 7, issue 4, page 781-797 ISSN 2368-7460 2368-7460 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/as-2020-0031 |
container_title |
Arctic Science |
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1785554561636761600 |