Supplementary material from "Sea-ice induced growth decline in Arctic shrubs"

Measures of increased tundra plant productivity have been associated with the accelerating retreat of the Arctic sea-ice. Emerging studies document opposite effects, advocating for a more complex relationship between the shrinking sea-ice and terrestrial plant productivity. I introduce an autoregres...

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Bibliographic Details
Main Author: Forchhammer, Mads
Format: Article in Journal/Newspaper
Language:unknown
Published: Figshare 2017
Subjects:
Online Access:https://dx.doi.org/10.6084/m9.figshare.c.3843634.v1
https://figshare.com/collections/Supplementary_material_from_Sea-ice_induced_growth_decline_in_Arctic_shrubs_/3843634/1
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Summary:Measures of increased tundra plant productivity have been associated with the accelerating retreat of the Arctic sea-ice. Emerging studies document opposite effects, advocating for a more complex relationship between the shrinking sea-ice and terrestrial plant productivity. I introduce an autoregressive plant growth model integrating effects of biological and climatic conditions for analysing individual ring-width growth time-series. Using 128 specimens of Salix arctica , S. glauca and Betula nana sampled across Greenland to Svalbard, an overall negative effect of the retreating June sea-ice extent was found on the annual growth. The negative effect of the retreating June sea-ice was observed for younger individuals with large annual growth allocations and with little or no trade-off between previous and current year's growth.