Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/26416
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Comparative responses of phenology and reproductive development to simulated environmental change in sub-Arctic and high Arctic plants
Author(s): Wookey, Philip
Parsons, Andrew N
Welker, Jeffery M
Potter, Jacqueline A
Callaghan, Terry V
Lee, John A
Press, Malcolm C
Contact Email: philip.wookey1@stir.ac.uk
Issue Date: Sep-1993
Citation: Wookey P, Parsons AN, Welker JM, Potter JA, Callaghan TV, Lee JA & Press MC (1993) Comparative responses of phenology and reproductive development to simulated environmental change in sub-Arctic and high Arctic plants, Oikos, 67 (3), pp. 490-502.
Abstract: A high arctic polar semi-desert community is characterised by a sparse, low and aggregated vegetation cover where plant proliferation is by seedlings. A sub-arctic dwarf shrub heath is characterised by a complete vegetation cover of erect, clonal dwarf shrubs which spread vegetatively. At the polar semi-desert site, there was a striking effect of temperature enhancement treatments on phenology and seed-setting of Dryas octopetala ssp. octopetala, with almost no seed-setting occurring in plots experiencing ambient temperatures. There was no significant effects of temperature enhancement alone on fruit production of Empetrum hermaphroditum at the sub-Arctic dwarf shrub heath site, although fruit production was significantly influenced by application of nutrients and/or water. The response of a dominant high arctic dwarf shrub to increased temperature suggests that any climate warming may stimulate seed-set. This could be particularly important in the high Arctic where colonisation can proceed in areas dominated by bare ground and where genetic recombination may be needed to generate tolerance to predicted changes of great magnitude. In the sub-Arctic, however, the closed vegetation is dominated by clonally-proliferating species and recruitment from seedlings is rare. Plant fitness will increase here in response to any increased vegetative growth resulting from higher nutrient availability in warmer organic soils. -from Authors
DOI Link: http://dx.doi.org/10.2307/3545361
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.

Files in This Item:
File Description SizeFormat 
3545361.pdf2.07 MBAdobe PDFUnder Permanent Embargo    Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependent on the depositor still being contactable at their original email address.



This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.