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Responses to elevated temperature and CO2 in the perennial grass Agrostis curtisii in relation to population origin by L. R. Norton; L. G. Firbank; A. J. Gray; A. R. Watkinson is a Environmental Science article available to read on EtoBox.

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1. Evolutionary responses to climate change will depend on the presence of heritable variation within species populations for traits that increase fitness under the changing conditions. Patterns of ecotypic differentiation in relation to latitude in some species suggest that such variation exists in relation to temperature responses. Response to elevated CO~2~, whether heritable or not, is not expected to be related to latitudinal or climatic differences within temperate regions. 2. To test these ideas, seeds were collected from 10 populations of the outbreeding perennial grass __Agrostis curtisii__ across its range in Europe from south Wales to Portugal. Plants were grown under ambient and elevated temperature and CO~2~ conditions, in a factorial design, in solardomes; two half sibs from each population were planted in separate pots in each of the two replicate domes with each combination of treatments. One half sib was harvested at the end of the first summer, the second at the end of the second summer. 3. Survival was uniformly high and flowering uniformly low across treatments and populations. 4. Responses to temperature and CO~2~ treatments varied over time for almost all popu

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Author

L. R. Norton; L. G. Firbank; A. J. Gray; A. R. Watkinson

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; JSTOR (ISSN 0269-8463)

Published

1999

Language

EN

Field

Environmental Science (Physical Sciences)