Responses to Projected Changes in Climate and UV-B at the Species Level Climate Change and UV-B Impacts on Arctic Tundra and Polar Desert Ecosystems

Climate Change and UV-B Impacts on Arctic Tundra and Polar Desert Ecosystems Rationale, Concepts and Approach to the Assessment

Response of conifers to UV-B and climate in mountain areas

The present study was focused to examine the combined effects of climate and ultraviolet-B radiation on conifer tree-ring density. Statistical methods were employed to extract tree responses in annual ring density and to identify functional relationship in trees when the level of ultraviolet-B radiation changes regardless of climate variations. In this study, the consideration was given to the ...

Depletion of stratospheric ozone over the Antarctic and Arctic: responses of plants of polar terrestrial ecosystems to enhanced UV-B, an overview.

Depletion of stratospheric ozone over the Antarctic has been re-occurring yearly since 1974, leading to enhanced UV-B radiation. Arctic ozone depletion has been observed since 1990. Ozone recovery has been predicted by 2050, but no signs of recovery occur. Here we review responses of polar plants to experimentally varied UV-B through supplementation or exclusion. In supplementation studies comp...

Climate Change and UV-B Impacts on Arctic Tundra and Polar Desert Ecosystems

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Responses to projected changes in climate and UV-B at the species level.

Environmental manipulation experiments showed that species respond individualistically to each environmental-change variable. The greatest responses of plants were generally to nutrient, particularly nitrogen, addition. Summer warming experiments showed that woody plant responses were dominant and that mosses and lichens became less abundant. Responses to warming were controlled by moisture ava...