Home About Browse Search
Svenska


Plant productivity : a predictor of animal species and community characteristics : ecological patterns from local to global scale

Aava-Olsson, Birgitta (2001). Plant productivity : a predictor of animal species and community characteristics : ecological patterns from local to global scale. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae. Silvestria, 1401-6230
ISBN 91-576-6084-0
[Doctoral thesis]

[img] PDF
16MB

Abstract

This thesis focus on the effects of plant productivity on various aspects of geographic range size, resource use, body size and abundance of animal species from different taxa, from a local to a global scale. The aim was to identify putative scales to determine whether it is possible to find functional links between plant productivity and species richness by considering how productivity affects species characteristics for different assemblages, e.g. mammals, insects and birds.
Terrestrial endemic mammal genera in the world appeared to be most common in zoo-geographic regions of intermediate plant productivity (Paper I). I could not find evidence that Australian herbivorous mammals either combine food resources in more ways or are more selective in areas of high plant productivity (Paper II). Although, these Australian herbivorous mammals were larger and more similar in size in biomes of high plant productivity than in low (Paper HI). I further, found that for two families of ground dwelling Coleoptera plant productivity does not have any effect on the relationship between number of individuals and number of species within body size classes in local forest sites (Paper IV). There was a trend that higher productivity sites could hold more individuals of large sized species, but not more species. The reverse trend was observed for small sized species. Breeding forest birds in Sweden had highest average densities in areas of both low and high plant productivity (Paper V). Also, species with a lower than expected from their range size were mainly found in areas of high plant productivity while the reverse was true for species with higher than expected abundance.
Finding functional links between observed patterns of animal characteristics and between species richness and productivity are vital to our understanding of how the transfer of energy from plants to animals affects the distribution of species. The spatial scale at which to study the mechanisms does influence how these proposed functional links will be affected by productivity. In this thesis I show that changes in productivity are likely to induce complex interactive changes in all key attributes, rather than clear linear responses. I therefore suggest that future studies should consider all these attributes in conjunction.

Authors/Creators:Aava-Olsson, Birgitta
Title:Plant productivity : a predictor of animal species and community characteristics : ecological patterns from local to global scale
Year of publishing :2001
Number:200
Number of Pages:36
ISBN for printed version:91-576-6084-0
ISSN:1401-6230
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:plant productivity, range size, resource use, body size, abundance, endemism, species richness, mammals, insects, birds, forests, scale
URN:NBN:urn:nbn:se:slu:epsilon-p-107988
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107988
ID Code:17764
Faculty:S - Faculty of Forest Sciences
Deposited By: SLUpub Connector
Deposited On:08 Oct 2020 15:49
Metadata Last Modified:08 Oct 2020 15:51

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits