Influences of summer warming and nutrient availability on Salix glauca L. growth in Greenland along an ice to sea gradient
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The combined effects of climate change and nutrient availability on Arctic vegetation growth are poorly understood. Archaeological sites in the Arctic could represent unique nutrient hotspots for studying the long-term effect of nutrient enrichment. In this study, we analysed a time-series of ring widths of Salix glauca L. collected at nine archaeological sites and in their natural surroundings along a climate gradient in the Nuuk fjord region, Southwest Greenland, stretching from the edge of the Greenlandic Ice Sheet in the east to the open sea in the west. We assessed the temperature-growth relationship for the last four decades distinguishing between soils with past anthropogenic nutrient enrichment (PANE) and without (controls). Along the East–West gradient, the inner fjord sites showed a stronger temperature signal compared to the outermost ones. Individuals growing in PANE soils had wider ring widths than individuals growing in the control soils and a stronger climate-growth relation, especially in the inner fjord sites. Thereby, the individuals growing on the archaeological sites seem to have benefited more from the climate warming in recent decades. Our results suggest that higher nutrient availability due to past human activities plays a role in Arctic vegetation growth and should be considered when assessing both the future impact of plants on archaeological sites and the general greening in landscapes with contrasting nutrient availability.
| Original language | English |
|---|---|
| Article number | 3077 |
| Journal | Scientific Reports |
| Volume | 12 |
| Issue number | 1 |
| Number of pages | 12 |
| ISSN | 2045-2322 |
| DOIs | |
| Publication status | Published - Dec 2022 |
Bibliographical note
CENPERMOA[2022]
Funding Information:
We gratefully acknowledge the financial support from VELUX FONDEN (REMAINS of Greenland: 33813). The permission n? 50.05 to perform the fieldwork, collect the plants and soils samples and export them was obtained from the Nunatta Katersugaasivia Allagaateqarfialu ? Greenland National Museum and Archive. J?rgen Hollesen, Henning Matthiesen and Nanna Bjerregaard Pedersen undertook the formal identification of the plant material used in this study. The specimens are stored at the Department of Biology, Ecoinformatic and Biodiversity, Aarhus University. Due to further ongoing studies, they are available on request from the corresponding authors. This research has been supported by a Marie Sklodowska-Curie Individual fellowship (IF) under contract number 895233 and by the 2017 BIRD Project of TeSAF Department University of Padova. A.L.P., U.A.T., and S.N. were supported by the Villum Young Investigator Programme (VKR023456 to S.N.) and the Independent Research Fund Denmark (7027-00133B to S.N.). A.W-N. and B.E. contribution was granted by the Danish National Research Foundation (CENPERM DNRF100 to B.E.). N.B.P. was supported by Carlsberg Post doc scholarship (CF14-0454) and Carlsberg Research travel grant (CF15-0112). We thank Raffaella Dibona and Jakob Assmann for their help and input during the earlier stages of this project, Rasmus Fenger-Nielsen for creating the map used in figure S5 and Ashley Pearcy Buitenwerf for proof reading the manuscript. Finally, we acknowledge the Kalaallit, who are the original and current inhabitants of the lands on which we conducted our field work, and pay our respects to their members past and present. The authors declare no conflicts of interest.
Funding Information:
We gratefully acknowledge the financial support from VELUX FONDEN (REMAINS of Greenland: 33813). The permission n° 50.05 to perform the fieldwork, collect the plants and soils samples and export them was obtained from the Nunatta Katersugaasivia Allagaateqarfialu – Greenland National Museum and Archive. Jørgen Hollesen, Henning Matthiesen and Nanna Bjerregaard Pedersen undertook the formal identification of the plant material used in this study. The specimens are stored at the Department of Biology, Ecoinformatic and Biodiversity, Aarhus University. Due to further ongoing studies, they are available on request from the corresponding authors. This research has been supported by a Marie Sklodowska-Curie Individual fellowship (IF) under contract number 895233 and by the 2017 BIRD Project of TeSAF Department University of Padova. A.L.P., U.A.T., and S.N. were supported by the Villum Young Investigator Programme (VKR023456 to S.N.) and the Independent Research Fund Denmark (7027-00133B to S.N.). A.W-N. and B.E. contribution was granted by the Danish National Research Foundation (CENPERM DNRF100 to B.E.). N.B.P. was supported by Carlsberg Post doc scholarship (CF14-0454) and Carlsberg Research travel grant (CF15-0112). We thank Raffaella Dibona and Jakob Assmann for their help and input during the earlier stages of this project, Rasmus Fenger-Nielsen for creating the map used in figure S5 and Ashley Pearcy Buitenwerf for proof reading the manuscript. Finally, we acknowledge the Kalaallit, who are the original and current inhabitants of the lands on which we conducted our field work, and pay our respects to their members past and present. The authors declare no conflicts of interest.
Publisher Copyright:
© 2022, The Author(s).
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