Zeitschriftenaufsatz | 2021

Body size and digestive system shape resource selection by ungulates: A cross-taxa test of the forage maturation hypothesis

Autor:in
Esmaeili, Saeideh; Jesmer, Brett; Albeke, Shannon; Aikens, Ellen; Schoenecker, Kathryn A.; King, Sarah; Abrahms, Briana; Buuveibaatar, Bayarbaatar; Beck, Jeffrey L.; Boone, Randall; Cagnacci, Francesca; Chamaillé-Jammes, Simon; Chimeddorj, Buyanaa; Cross, Paul; Nandintsetseg, Dejid; Enkhbyar, Jagdag; Fischhoff, Ilya R.; Ford, Adam T.; Jenks, Kate; Hemami, Mahmoud-Reza; Hennig, Jacob; Ito, Takehiko; Kaczensky, Petra; Kauffman, Matthew J.; Linnell, John; Lkhagvasuren, Badamjav; McEvoy, John; Melzheimer, J.; Merkle, Jerod; Mueller, Thomas; Muntifering, Jeff; Mysterud, Atle; Olson, Kirk; Panzacchi, Manuela; Payne, John; Pedrotti, Luca; Rauset, Geir; Rubenstein, Daniel I.; Sawyer, Hall; Scasta, J. Derek; Signer, Johannes; Songer, Melissa; Stabach, Jared; Stapleton, Seth P.; Strand, Olav; Sundaresan, Siva; Usukhjargal, Dorj; Uuganbayar, Ganbold; Fryxell, John; Goheen, Jacob
Publikationen als Autor:in / Herausgeber:in der Vetmeduni
Kaczensky, Petra
Journal
Ecology Letters
Schlagwörter
Equidae; forage biomass; hindgut fermentation; macroecology; ruminant; step-selection function; water requirements
Dokumenten­typ
Originalarbeit
ISSN/eISSN
1461-023X - 1461-0248
DOI
Öffnen URL 10.1111/ele.13848
WoS ID
Öffnen URL WOS:000678876200001
PubMed ID
Öffnen URL MEDLINE:34311513

Weitere Details

Band
24
Startseite
2178
Letzte Seite
2191
Nummer
10
Seiten­anzahl
14
The forage maturation hypothesis (FMH) states that energy intake for ungulates is maximised when forage biomass is at intermediate levels. Nevertheless, metabolic allometry and different digestive systems suggest that resource selection should vary across ungulate species. By combining GPS relocations with remotely sensed data on forage characteristics and surface water, we quantified the effect of body size and digestive system in determining movements of 30 populations of hindgut fermenters (equids) and ruminants across biomes. Selection for intermediate forage biomass was negatively related to body size, regardless of digestive system. Selection for proximity to surface water was stronger for equids relative to ruminants, regardless of body size. To be more generalisable, we suggest that the FMH explicitly incorporate contingencies in body size and digestive system, with small-bodied ruminants selecting more strongly for potential energy intake, and hindgut fermenters selecting more strongly for surface water. The forage maturation hypothesis (FMH) states that energy intake for ungulates is maximised when forage biomass is at intermediate levels. Nevertheless, metabolic allometry and different digestive systems suggest that resource selection should vary across ungulate species. By combining GPS relocations with remotely sensed data on forage characteristics and surface water, we quantified the effect of body size and digestive system in determining movements of 30 populations of hindgut fermenters (equids) and ruminants across biomes. Selection for intermediate forage biomass was negatively related to body size, regardless of digestive system. Selection for proximity to surface water was stronger for equids relative to ruminants, regardless of body size. To be more generalisable, we suggest that the FMH explicitly incorporate contingencies in body size and digestive system, with small-bodied ruminants selecting more strongly for potential energy intake, and hindgut fermenters selecting more strongly for surface water.© 2021 John Wiley & Sons Ltd.

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