Logo
 

Abertay Research Collections >
School of Science, Engineering & Technology >
Science Engineering & Technology Collection >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/127

View Statistics
Title: Consequences of intraspecific variation for the structure and function of ecological communities Part 2: Linking diversity and function
Authors: Pachepsky, Elizaveta
Bown, James L.
Eberst, Alistair
Bausenwein, Ursula
Millard, Peter
Squire, Geoff R.
Crawford, John W.
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
University of Abertay Dundee. SIMBIOS
Keywords: Environmental heterogeneity
Ecosystem functioning
Intraspecific variation
Issue Date: Oct-2007
Publisher: Elsevier
Type: Article
Refereed: peer-reviewed
Rights: (c)Elsevier. Published version available at http://www.sciencedirect.com
Citation: Pachepsky, E., et al. 2007. Consequences of intraspecific variation for the structure and function of ecological communities Part 2: Linking diversity and function. Ecological Modelling. 207(2-4): pp.277-285. [Online] Available from: DOI: 10.1016/j.ecolmodel.2007.05.004
Abstract: A central aim in ecology is to understand the relation between organism diversity and ecosystem functioning. We investigate this relation using a generic individual-based modelling framework described in part 1, in which individuals within a community are characterised by physiological traits and interact within a spatially structured environment. We explore the effect of intraspecific variation among individuals on community-scale productivity in a range of homogeneous and heterogeneous environments. We show that diversity among individuals has a significant, and in most but not all cases positive, impact on community productivity. At low levels of resource the persisting plants giving highest productivity have slowest uptake rates and longest times to reproduction. In contrast, at high levels of resource the persisting plants giving highest productivity have highest uptake levels and shortest time to reproduction. Thus, the individuals' trait distributions defining community functioning emerge, after many iterations of the model, from the surviving individuals. We, therefore, show that different mechanisms, as evidenced in the surviving individuals' traits, increase community productivity in different environmental contexts, and so demonstrate the importance of accounting for diversity at the scale of the individual. Consequently, progress may be made in linking diversity and function by considering small, manageable systems and making physiological measurements on individuals.
URI: http://hdl.handle.net/10373/127
Appears in Collections:Science Engineering & Technology Collection

Files in This Item:

There are no files associated with this item.

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

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback