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Publikasjoner

NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.

NIBIO POP → NIBIO Rapport → NIBIO Bok → Våre poenggivende vitenskapelige publikasjoner →

2012

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Authors

Anna Birgitte Milford

Abstract

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Authors

Tor J. Johansen Eldrid Lein Molteberg

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Authors

Fride Høistad Schei Hans Blom Ivar Gjerde John Arvid Grytnes Einar Heegaard Magne Sætersdal

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Authors

Jutta Kapfer Risto Virtanen John Arvid Grytnes

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Authors

Aruppillai Suthaparan Sissel Torre Leiv M. Mortensen Hans Ragnar Gislerød Knut Asbjørn Solhaug Arne Stensvand David M. Gadoury

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Authors

Jonathan Edward Colman Diress Tsegaye Alemu Christian Pedersen Ruben Eidesen Herbjørg Arntsen Øystein Holand Alex Mann Eigil Reimers Stein Ragnar Moe

Abstract

Interspecific interaction among sympatric ungulates is important in management and conservation. We investigated behavioral interference between sympatric wild or semidomestic reindeer (Rangifer tarandus tarandus) and sheep (Ovis aries) in two field studies and one enclosure experiment. For free-ranging wild and semidomestic reindeer, interference between the two species increased with decreasing distances, occurring only at less than 200 m and 30 m, for wild and semidomestic reindeer, respectively, and neither species consistently dominated the other. In a controlled, duplicated experiment we tested interference and confrontations at the feeding patch level among semidomestic reindeer and sheep within 40 × 50 m enclosures. When new reindeer or sheep were introduced into enclosures already occupied by reindeer, new reindeer resulted in significantly more interference and confrontations among individuals compared to new sheep; i.e., intraspecific interference was more prevalent than interspecific interference at equal densities. For all study areas, confrontations decreased with time after “first encounter,” indicating cohabituation. A sympatric use of pastures was not visually disruptive for recorded grazing behavior for either species.

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Authors

Igor A. Yakovlev Gustav Vaaje-Kolstad Ari Hietala Emil Stefanczyk Halvor Solheim Carl Gunnar Fossdal

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Authors

Qi Jing Gilles Bélanger Vern Baron Helge Bonesmo Perttu Virkajärvi David Young

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Authors

Matthias Koesling Anne-Kristin Løes Ola Flaten Niels Heine Kristensen Mette Weinreich Hansen

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Authors

Anke Möser Susan E. Chen Stephanie B. Jilcott Rodolfo M. Jr. Nayga

Abstract

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