Spitzer, Robert
(2019).
Trophic resource use and partitioning in multispecies ungulate communities.
Diss. (sammanfattning/summary)
Umeå :
Sveriges lantbruksuniv.,
Acta Universitatis Agriculturae Sueciae, 1652-6880
; 2019:73
ISBN 978-91-7760-464-8
eISBN 978-91-7760-465-5
[Doctoral thesis]
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- Published Version
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Abstract
Over the past decades, ungulates across the northern hemisphere have been expanding in range and numbers. This has raised concerns about their impacts, particularly on shared resources with humans, e.g., timber trees. Understanding how different ungulate species use trophic resources is therefore a crucial component of managing their populations.
In this thesis, I synthesized data from the literature and used faecal DNA metabarcoding to investigate diets and patterns of resource partitioning for ungulate communities in Sweden and at the European scale. I also evaluated the reliability of dung morphometry for identifying ungulate species. I found that species identification of faecal pellets is difficult where similar-sized ungulates coexist which questions the reliability of pellet counts as a monitoring technique in such systems. Dung morphometry could, however, clearly distinguish moose from the smaller deer species. Across Europe, average diets of the four main deer species fit well with predictions by Hofmann’s hypothesis of ruminant feeding types. Red and fallow deer (mixed feeders) showed larger dietary plasticity than moose and roe deer (browsers). In Sweden, red and fallow deer adopted a more browser-like diet with high proportions of woody plant species in their diet. Dietary niche width was lowest for moose and highest for fallow deer but varied only little across seasons. Ericaceous shrubs like Vaccinium spp. comprised a major component in the diet of all four deer species. Intraspecific dietary overlap for moose was higher than dietary overlap with either of the smaller deer species. Moose diets also contained larger proportions of Scots pine Pinus sylvestris than those of the other deer species. In areas with high densities of the smaller deer, moose, but not the other deer species, consumed more pine and less Vaccinium spp. Feeding competition from the smaller deer species over Vaccinium spp. may drive moose towards increased browsing on pine, thereby exacerbating the forestry-moose conflict.
For the mitigation of this conflict, managing important food items like Vaccinium spp. and the populations of smaller deer species may be of equal or greater importance than a simple reduction in the number of moose.
Authors/Creators: | Spitzer, Robert | ||||||||||
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Title: | Trophic resource use and partitioning in multispecies ungulate communities | ||||||||||
Alternative abstract: |
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Series Name/Journal: | Acta Universitatis Agriculturae Sueciae | ||||||||||
Year of publishing : | 2019 | ||||||||||
Number: | 2019:73 | ||||||||||
Number of Pages: | 121 | ||||||||||
Papers/manuscripts: |
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Place of Publication: | Umeå | ||||||||||
Publisher: | Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences | ||||||||||
ISBN for printed version: | 978-91-7760-464-8 | ||||||||||
ISBN for electronic version: | 978-91-7760-465-5 | ||||||||||
ISSN: | 1652-6880 | ||||||||||
Language: | English | ||||||||||
Publication Type: | Doctoral thesis | ||||||||||
Article category: | Other scientific | ||||||||||
Full Text Status: | Public | ||||||||||
Agris subject categories.: | L Animal production > L20 Animal ecology | ||||||||||
Subjects: | (A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology | ||||||||||
Keywords: | DNA metabarcoding, ungulates, dung morphometry, dietary overlap, resource partitioning, multispecies management, moose Alces alces, roe deer Capreolus capreolus, red deer Cervus elaphus, fallow deer Dama dama | ||||||||||
URN:NBN: | urn:nbn:se:slu:epsilon-p-102570 | ||||||||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-102570 | ||||||||||
ID Code: | 16431 | ||||||||||
Faculty: | S - Faculty of Forest Sciences | ||||||||||
Department: | (S) > Dept. of Wildlife, Fish and Environmental Studies | ||||||||||
Deposited By: | SLUpub Connector | ||||||||||
Deposited On: | 14 Nov 2019 12:49 | ||||||||||
Metadata Last Modified: | 14 Nov 2019 12:49 |
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