Employee photo: Jan Eivind Østnes

Jan Eivind Østnes

Associate Professor
Faculty of Biosciences and Aquaculture
Study location
Steinkjer
Office
Steinkjer, Bygg B, 337
2025
Trace, macro and rare earth elements in a sedentary avian predator: Relationships with age and dietary tracers 2025 Environmental Research - Ingvild Buran Kroglund, Tomasz Maciej Ciesielski, Jan Eivind Østnes, Michael A. Patten, Katrine Borgå, Veerle Leontina B Jaspers
A Picky Predator and Its Prey: How Snow Conditions and Ptarmigan Abundance Impact Gyrfalcon Feeding Behaviour and Breeding Success 2025 Ecology and Evolution - Annabel Slettenhaar, Jan Eivind Østnes, Børje Cato Moen, Rolf Terje Kroglund, Torgeir Nygård, Erlend Birkeland Nilsen
2024
Reindeer carcasses modulate vegetation composition and greenness in High-Arctic tundra 2024 Arctic Science - Maya Nisha Situnayake, Marit By, Oddbjørn Larsen, Stijn Sombekke, Lammert Kooistra, Rakel Blaalid, Jan Eivind Østnes, Nuria Selva, Åshild Ønvik Pedersen, Sam Steyaert
Fecal DNA metabarcoding reveals seasonal and annual variation in willow ptarmigan diet 2024 Royal Society Open Science - Elise Wiseth Ingvaldsen, Jan Eivind Østnes, Oddmund Kleven, Marie Louise Davey, Frode Fossøy, Erlend Birkeland Nilsen
Tracking data highlight the importance of human-induced mortality for large migratory birds at a flyway scale 2024 Biological Conservation - Juan Serratosa, Steffen Oppel, Shay Rotics, Andrea Santangeli, Stuart H.M. Butchart, Luis S. Cano-Alonso, Jose Luis Tellería, Ryno Kemp, Aaron Nicholas, Aigars Kalvans, Aitor Galarza, Aldina M.A. Franco, Alessandro Andreotti, Alexander N.G. Kirschel, Alex Ngari, Alvaro Soutullo, Ana Bermejo-Bermejo, Andre J. Botha, Andrea Ferri, Angelos Evangelidis, Anna Cenerini, Anton Stamenov, Antonio Hernández-Matías, Arianna Aradis, Atanas P. Grozdanov, Beneharo Rodríguez, Çağan H. Şekercioğlu, Catuxa Cerecedo-Iglesias, Christina Kassara, Christos Barboutis, Claire Bracebridge, Clara Garcia-Ripolles, Corinne J. Kendall, Damijan Denac, Dana G. Schabo, David R. Barber, Dimitar V. Popov, Dobromir D. Dobrev, Egidio Mallia, Elena Kmetova-Biro, Ernesto Álvarez, Evan R. Buechley, Evgeny A. Bragin, Fabrizio Cordischi, Fadzai M. Zengeya, Flavio Monti, Francois Mougeot, Gareth Tate, Georgi Stoyanov, Giacomo Dell'omo, Giuseppe Lucia, Gradimir Gradev, Guido Ceccolini, Guilad Friedemann, Ingar Jostein Øien, Jan Eivind Østnes, Oddmund Kleven, Rolf Terje Kroglund, Tomas Aarvak, Torgeir Nygård
2023
Wildlife Camera Monitoring Revealed the Northern Goshawk as a Predator on Gyrfalcon Nestlings 2023 The Journal of raptor research - Børje Cato Moen, Rolf Terje Kroglund, Jan Eivind Østnes, Erlend Birkeland Nilsen, Torgeir Nygård
Per- and poly-fluoroalkyl substances in Tawny Owl (Strix aluco) feathers from Trøndelag, Norway 2023 Science of the Total Environment - Junjie Zhang, Veerle Leontina B Jaspers, Jonas Røe, Gabriela Castro Varela, Ingvild Buran Kroglund, Susana Villa Gonzalez, Jan Eivind Østnes, Alexandros Asimakopoulos
2022
Primary Cell Lines From Feathers and Blood of Free-Living Tawny Owls (Strix aluco): A New In Vitro Tool for Non-Lethal Toxicological Studies 2022 Frontiers in Genetics - Ingvild Buran Kroglund, Sara Kristiane Kjærgård Eide, Jan Eivind Østnes, Rolf Terje Kroglund, Jan-Eirik Frisli, Courtney Alice Waugh
2021
Population control by means of organised hunting effort: Experiences from a voluntary goose hunting arrangement 2021 Ambio - Ingunn M. Tombre, Fredrik Fredriksen, Odd Jerpstad, Jan Eivind Østnes, Einar Eythórsson
2019
Migratory patterns of Ospreys (Pandion haliaetus) from central Norway 2019 Ornis Fennica - Jan Eivind Østnes, Rolf Terje Kroglund, Oddmund Kleven, Torgeir Nygård
Extra‑pair paternity and sperm length variation in the socially monogamous Fieldfare Turdus pilaris 2019 Journal of Ornithology - Oddmund Kleven, Aksel Nes Fiske, Magnus Håvik, Rolf Terje Kroglund, Jan Eivind Østnes, Tim Schmoll
2018
Birds of different feather flock together - genetic structure of Taiga Bean Goose in Central Scandinavia 2018 Bird conservation international - Adriaan de Jong, Oddmund Kleven, Jan Eivind Østnes, Rolf Terje Kroglund, Isak Vahlström, Jan Nilsson, Göran Spong
2025
Three decades of alpine predator-prey dynamics: An integrated model of gyrfalcons, ptarmigan, rodents and climate interactions 2025 GYRCOP 2025 Umeå - Annabel Slettenhaar, Chloé Rebecca Nater, Emily Grace Simmonds, Bård Gunnar Stokke, John Atle Kålås, Nina Elisabeth Eide, Odd Frydenlund Steen, Jan Eivind Østnes, Erlend Birkeland Nilsen
Ptarmigan seasonal mortality patterns across climate and food-web contexts 2025 OIKOS Norway 2025 - Annabel Slettenhaar, Jan Eivind Østnes, Erlend Birkeland Nilsen
Species interactions in a changing world: Gyrfalcons, ptarmigan, rodents and their dynamics in Norwegian mountain ecosystems 2025 BES Annual Meeting - Annabel Slettenhaar, Chloé Rebecca Nater, Emily Grace Simmonds, Bård Gunnar Stokke, John Atle Kålås, Nina Elisabeth Eide, Odd Frydenlund Steen, Jan Eivind Østnes, Erlend Birkeland Nilsen
Gyrfalcon and ptarmigan interactions in Norwegian mountain ecosystems: A dynamic interplay between raptors and their prey in a changing world 2025 Gyrfalcon and ptarmigan interactions in Norwegian mountain ecosystems: A dynamic interplay between raptors and their prey in a changing world - Erlend Birkeland Nilsen, Annabel Slettenhaar, Lasse Frost Eriksen, Nina Elisabeth Eide, Rolf Terje Kroglund, John Atle Kålås, Chloé Rebecca Nater, Emily Grace Simmonds, Torgeir Nygård, Bård Gunnar Stokke, Jan Eivind Østnes
Traner i Trøndelag. Arealbruk, respons til bortjaging og beiteskadevurderinger 2025 - Ingunn Tombre, Håvard Frafjord, Niklas Daffinrud, Ove Martin Gundersen, Lovisa Nilsson, Jan Eivind Østnes
2024
Diet and feeding behaviour of the gyrfalcon in fluctuating ptarmigan abundances in central Norway 2024 Gordon Research Conference Predator-Prey Interactions - Annabel Josien Slettenhaar, Jan Eivind Østnes, Børje Cato Moen, Rolf Terje Kroglund, Torgeir Nygård, Erlend Birkeland Nilsen
Sotsnipe 2024 Store Norske Leksikon (Nettutgaven) - Jan Eivind Østnes, Per Ole Syvertsen
Influence of different habitat characteristics on the concentration of elements in feathers and blood of a resident raptor species (tawny owls) in the Subarctic region 2024 One Health Conference - Ingvild Buran Kroglund, Tomasz Maciej Ciesielski, Jan Eivind Østnes, Michael Allen Patten, Katrine Borgå, Veerle Leontina B Jaspers
2013
Hekkebestanden av lappfiskand (Mergellus albellus) i Vikna, Nord-Trøndelag 2013 - Jan Eivind Østnes, Rolf Terje Kroglund, Tom Roger Østerås, Torstein Myhre
Bevaringsmål for Ørdalen naturreservat Inderøy, Nord-Trøndelag 2013 - Elisabeth D. Olsen, Marie Rolfsen, Håkon Holien, Rolf Terje Kroglund, Jan Eivind Østnes
Bevaringsmål for Vallemsberga naturreservat, Steinkjer kommune i Nord-Trøndelag 2013 - Judith Dahl, Håkon Holien, Rolf Terje Kroglund, Jan Eivind Østnes
Bevaringsmål for Kaldvassmyra naturreservat Verdal, Nord-Trøndelag 2013 - Tonje Evang Berland, Håkon Holien, Rolf Terje Kroglund, Jan Eivind Østnes
Sædgås i Børgefjell 2013 Regional oppsynssamling - Jan Eivind Østnes, Rolf Terje Kroglund
2007
Studenter på oppsynstur med politiet og kystvakten 2007 Miljøkrim : tidsskrift for miljøkriminalitet - Rolf Terje Kroglund, Jan Eivind Østnes, Stig Tronstad, Pål Fossland Moa
Taksering av hønsefugl - hvorfor og hvordan : erfaringer fra et samarbeid i Nord-Trøndelag 2007 - Pål Fossland Moa, Bjørn Roar Hagen, Arne Bragstad Rannem, Tor Kristian Spidsø, Ole Jakob Sørensen, Stig Tronstad, Rolf Terje Kroglund, Jan Eivind Østnes, Jens Kveli, Ole Morten Sand
2002
Informasjonshefte om bacheloroppgaven KA196 2002 - Tor Kristian Spidsø, Toralf Bjelkåsen, Reidar A. Moen, Jan Eivind Østnes
1993
Konsekvensanalyse olje/sjøfugl for petroleumsvirksomhet i norsk del av Skagerrak 1993 - Svein-Håkon Lorentsen, Tycho Anker-Nilssen, Rolf Terje Kroglund, Jan Eivind Østnes
Konsekvensanalyse olje/sjøfugl for petroleumsvirksomhet på Midt-norsk sokkel og Vøringplatået 1993 - Karl Birger Strann, Jan Ove Bustnes, Rolf Terje Kroglund, Jan Eivind Østnes