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Using an ecosystem model linked to GCM‐derived local weather scenarios to analyse effects of climate change and elevated CO~2~ on dry matter production and partitioning, and water use in temperate managed grasslands by Marcel Riedo; Dimitrios Gyalistras; Andreas Fischlin; JürG. Fuhrer is a scholarly article available to read on EtoBox.

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## Abstract Local effects of climate change (CC) and elevated CO~2~ (2 × CO~2~, 660 μmol mol^–1^) on managed temperate grasslands were assessed by forcing a dynamic ecosystem model with weather scenarios. The aims of the study were to compare the relative importance of individual and combined effects of CC, 2 × CO~2~, and photosynthetic acclimation, and to assess the importance of local site conditions. The model was driven by hourly means for temperature (__T__), precipitation (__P__), global radiation (__G__), vapour pressure (__VP__), and wind speed (__U__). Local climate scenarios were derived by statistical downscaling techniques from a 2 × CO~2~ simulation with the General Circulation Model of the Canadian Climate Centre (CCC‐GCMII). Simulations over 14 growing seasons to account for year‐to‐year variability of climate were carried out for a low, relatively dry site, and a high, more humid site. At both sites, shoot dry matter responded positively to 2 × CO~2~ with the site at low elevation being more sensitive than the higher site. The effect of assumed changes in climate was negative at the lower, but positive at the higher site. Shoot dry matter was more sensitive to the e

Author

Marcel Riedo; Dimitrios Gyalistras; Andreas Fischlin; JürG. Fuhrer

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; Research Square (ISSN 1354-1013)

Published

1999

Language

EN