Ronny Steen

• Ecology and natural resource management
• Pedagogy
• Digital teaching methods

Liste med publikasjoner fra min forskning. (Cristin)

Steen, R. 2020. Diel activity patterns of urban Woodchucks (Marmota monax) revealed by camera traps at burrows in southwestern Ontario, Canada. Canadian Field Naturalist 134: 353-360

Steen, R., E. O. Kagge, P. Lilleengen and F. Midtgaard. 2020. Wingbeat frequencies in free-ranging hummingbirds in Costa Rica and Ecuador. Cotinga 42: 3-8. 

Steen, R., A. M. Austad, J. Steen, B. A. Bjerke. 2017. Daily activity and nest attendance in a breeding pair of Parrot Crossbills (Loxia pytyopsittacus) in southern Norway. Ornis Norvegica 40: 24-32

Steen, R. 2017. Bird monitoring using the smartphone (iOS) application Videography for motion detection. Bird Study 1: 62-69

Steen, R. 2017. Diel activity, visitor frequency and visitor duration of pollinators visiting focal plants: in situ automatic camera monitoring and data processing. Methods in Ecology and Evolution 8: 203-213

Steen, R., T. Tsimpidis, A. Miliou, V. Selås, G. A. Sonerud. 2016. Nonparental infanticide in colonial Eleonora’s falcons (Falco eleonorae). Journal of Raptor Research 50:217-220

Steen, R., C. S. Torjussen, D. W. Jones, T. Tsimpidis, and A. Miliou. 2016. Plastic mistaken for prey by a colony-breeding Eleonora’s falcon (Falco eleonorae) in the Mediterranean Sea, revealed by camera-trap. Marine Pollution Bulletin 106:200-201.

Sonerud, G. A., R. Steen, L. M. Løw, L. T. Røed, K. Skar, V. Selås, and T. Slagsvold. 2014. Evolution of parental roles in raptors: prey type determines role asymmetry in the Eurasian kestrel. Animal Behaviour 96:31-38.

Sonerud, G. A., R. Steen, V. Selås, O. M. Aanonsen, G.-H. Aasen, K. L. Fagerland, A. Fosså, L. Kristiansen, L. M. Løw, M. E. Rønning, S. K. Skouen, E. Asakskogen, H. M. Johansen, J. T. Johnsen, L. I. Karlsen, G. C. Nyhus, L. T. Røed, K. Skar, B.-A. Sveen, R. Tveiten, and T. Slagsvold. 2014. Evolution of parental roles in provisioning birds: diet determines role asymmetry in raptors. Behavioral Ecology 25:762-772.

Steen, R. 2014. The use of a low cost high speed camera to monitor wingbeat frequency in hummingbirds (Trochilidae). Ardeola 61:111-120.

Steen, R. and S. Sondre. 2014. Video surveillance system for remote long-term in situ observations: Recording diel cavity use and behaviour of wild European lobsters (Homarus gammarus). Marine & Freshwater Research 65:1094-1101.

Sonerud, G., R. Steen, L. Løw, L. Røed, K. Skar, V. Selås, and T. Slagsvold. 2013. Size-biased allocation of prey from male to offspring via female: Family conflicts, prey selection, and evolution of sexual size dimorphism in raptors. Oecologia 172:1-15.

Steen, R. and D. Mundal. 2013. New video registration of Autographa pulchrina (Haworth, 1809) (Lepidoptera, Noctuidae) and Sphinx pinastri L., 1758 (Lepidoptera, Sphingidae) pollinating Platanthera bifolia latiflora (Orchidaceae) in Norway. Norwegian Journal of Entomology 60:57-61.

Hågvar, S. and R. Steen. 2012. Succession of beetles (genus Cis) and oribatid mites (genus Carabodes) in dead sporocarps of the red-banded polypore fungus Fomitopsis pinicola. Scandinavian Journal of Forest Research:1-9.

Steen, R. 2012. Pollination of Platanthera chlorantha (Orchidaceae): new video registration of a hawkmoth (Sphingidae). Nordic Journal of Botany 30:623–626.

Steen, R., G. Sonerud, and T. Slagsvold. 2012. Parents adjust feeding effort in relation to nestling age in the Eurasian Kestrel (Falco tinnunculus). Journal of Ornithology 153: 1087-1099.

Steen, R. and G. A. Sonerud. 2012. A bank vole (Myodes glareolus) with complete leucism captured by a Eurasian kestrel (Falco tinnunculus) in Norway. Annales Zoologici Fennici 49:306-308.

Steen, R. and A. L. T. O. Aase. 2011. Portable digital video surveillance system for monitoring flower-visiting bumblebees. Journal of Pollination Ecology 5:90 - 94.

Steen, R., L. M. Løw, G. A. Sonerud, V. Selas, and T. Slagsvold. 2011. Prey delivery rates as estimates of prey consumption by Eurasian Kestrel Falco tinnunculus nestlings. Ardea 99:1-8.

Steen, R., L. M. Løw, and G. A. Sonerud. 2011. Delivery of Common Lizards (Zootoca (Lacerta) vivipara) to nests of Eurasian Kestrels (Falco tinnunculus) determined by solar height and ambient temperature. Canadian Journal of Zoology 89:199-205.

Steen, R., L. M. Løw, G. A. Sonerud, V. Selås, and T. Slagsvold. 2010. The feeding constraint hypothesis: Prey preparation as a function of nestling age and prey mass in the Eurasian kestrel. Animal Behaviour 80:147-153.

Steen, R. 2009. A portable digital video surveillance system to monitor prey deliveries at raptor nests. Journal of Raptor Research 43:69-74.

Selås, V., R. Steen, S. Kobro, T. Lislevand, and I. Stenberg. 2008. Direct and indirect weather impacts on spring populations of lesser spotted woodpecker (Dendrocopos minor) in Norway. Scandinavian Journal of Forest Research 23:148-153.

Johansen, H. M., V. Selås, K. Fagerland, J. T. Johnsen, B. A. Sveen, L. Tapia, and R. Steen. 2007. Goshawk diet during the nestling period in farmland and forest-dominated areas in southern Norway. Ornis Fennica 84:181-188.

Steen, R., V. Selås, and I. Stenberg. 2006. Impact of weather on annual fluctuations in breeding numbers of Lesser Spotted Woodpecker Dendrocopos minor in Norway. Ardea 94:225-231.