Effects of global change on a sub-Arctic heath: effects of enhanced UV-B radiation and increased summer precipitation

H...............H

Show simple item record

dc.contributor.author Sleep, Darren
dc.contributor.author Gwynn-Jones, Dylan
dc.contributor.author Lee, John A.
dc.contributor.author Phoenix, Gareth K.
dc.contributor.author Callaghan, Terry V.
dc.date.accessioned 2009-10-28T11:58:46Z
dc.date.available 2009-10-28T11:58:46Z
dc.date.issued 2001-12-21
dc.identifier.citation Sleep , D , Gwynn-Jones , D , Lee , J A , Phoenix , G K & Callaghan , T V 2001 , ' Effects of global change on a sub-Arctic heath: effects of enhanced UV-B radiation and increased summer precipitation ' Journal of Ecology , vol 89 , no. 2 , pp. 256-267 . , 10.1046/j.1365-2745.2001.00531.x en
dc.identifier.issn 1365-2745
dc.identifier.other PURE: 125881
dc.identifier.other dspace: 2160/3346
dc.identifier.uri http://hdl.handle.net/2160/3346
dc.description Phoenix, G. K., Gwynn-Jones, D., Callaghan, T. V., Sleep, D., Lee, J. A. (2001). Effects of global change on a sub-Arctic heath: effects of enhanced UV-B radiation and increased summer precipitation.   Journal of Ecology, 89, (2), 256-267. Sponsorship: CEC (Contract EV5V-CT910032), The Royal Swedish Academy of Sciences, Natural Environment Research Council (UK) en
dc.description.abstract 1 The responses of sub-Arctic heathland vegetation to enhanced UV-B radiation and increased summer precipitation over 7 years were investigated in a field experiment in northern Sweden. 2 Growth, phenology and reproduction of the dominant dwarf shrubs Vaccinium myrtillus, V. uliginosum, V. vitis-idaea and Empetrum hermaphroditum were studied after 5–7 years of manipulation and retrospective analyses were used to assess growth responses in earlier years. Leaf tissue N and P and 13C natural abundances were determined for V. myrtillus and E. hermaphroditum. Growth responses were also assessed for the moss Hylocomium splendens. 3 The deciduous V. myrtillus showed reduced growth, increased leaf thickness and increased flowering and berry production under enhanced UV-B in some years. V. uliginosum, V. vitis-idaea, E. hermaphroditum and H. splendens were, in general, tolerant of UV-B. 4 Increased precipitation affected growth only in the evergreen species: stem length and branching were sometimes stimulated in E. hermaphroditum, whereas V. vitis-idaea showed reduced branching. 5 Precipitation also increased leaf thickness in V. uliginosum and reduced flowering and berry production in V. myrtillus. 6 In the interactions that occurred between enhanced UV-B radiation and increased summer precipitation, combining the two treatments often negated any effect that either may have had separately. The effect of concurrent increases on this ecosystem is therefore likely to be much less than if either occurred singly. 7 Enhanced UV-B and increased summer precipitation appeared not to effect dwarf shrub abundances during the first 5 years of the experiment, suggesting that overall this heath may be more tolerant of these environmental changes than previously thought. en
dc.format.extent 12 en
dc.language.iso eng
dc.relation.ispartof Journal of Ecology en
dc.subject Empetrum en
dc.subject growth en
dc.subject phenology en
dc.subject reproduction en
dc.subject Vaccinium en
dc.title Effects of global change on a sub-Arctic heath: effects of enhanced UV-B radiation and increased summer precipitation en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1046/j.1365-2745.2001.00531.x
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Cadair


Advanced Search

Browse

My Account