Title
How is phenology of grassland species influenced by climate warming across a range of species richness?
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Budapest ,
Subject
Biology
Source (journal)
Community ecology. - Budapest, 2000, currens
Volume/pages
9(2008) :S:1 , p. 33-42
ISSN
1585-8553
1588-2756
ISI
000263432100006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We imposed two different global changes, climate warming and declining species richness, to synthesized grassland ecosystems, in order to determine both their single-factor effect as well as their possible interactions on plant phenology. Twelve climate-controlled chambers were therefore exposed to two temperature treatments (0 °C and 3 °C above ambient air temperature) and three species richness treatments (1,3 and 9 species). Measurements consisted of visual phenological observations of the appearance of flower buds until flowering and of autumn senescence stages, as well as of readings of the leaf chlorophyll content. In spring, chlorophyll concentrations increased under warming (9.7%) and decreasing species richness (39.4%). Warming also induced an earlier spring start (4 days) and enhanced flower production, whereas decreasing species richness likewise enhanced flower production but delayed the start of spring (16 days). In autumn, leaf senescence started simultaneously at the two temperature treatments and three species richness levels, but the end of the senescence was delayed in the heated chambers, as well as in the monocultures. Although warming and species richness interacted with species identity, no warming×species richness interactions were found. In conclusion, although warming and species richness influenced the duration of the growing season, none of these effects were reflected in the above-ground biomass of the individual plants. Under the projected climatic changes, warming will therefore not necessarily enhance the productivity of the individual plants.
E-info
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000263432100006&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000263432100006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000263432100006&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
Handle