Browsing NINA Brage by Title

Oaser for artsmangfoldet – hotspot-habitater for rødlistearter.

Evju, Marianne; Bakkestuen, Vegar; Blom, Hans H.; Brandrud, Tor Erik; Bratli, Harald; Nordén, Björn; Sverdrup-Thygeson, Anne; Ødegaard, Frode (NINA Temahefte;61, Book, 2015)

Observasjoner av hjortedyr ved sperregjerder langs fylkesveg 50 og riksveg 52 i Nordfjella

Rød-Eriksen, Lars; Hildebrand, Aniko; Meås, Roger; Gudmundsson, Aron Freyr; Mysterud, Atle; Rolandsen, Christer M. (NINA Rapport;2017, Research report, 2021)

Rød-Eriksen, L., Hildebrand, A., Meås, R., Gudmundsson, A.F., Mysterud, A. og Rolandsen, C.M. 2021. Observasjoner av hjortedyr ved sperregjerder langs fylkesveg 50 og riksveg 52 i Nordfjella. NINA Rapport 2017. Norsk ...

Observations of a White-tailed Eagle incubating eggs of a Greylag goose

Jacobsen, Karl-Otto; Sexton, David (Others, 2023)

Interspecific takeovers of nests are thought to be rare in birds. A female White-tailed Eagle Haliaeetus albicilla was observed incubating a nest of a Greylag Goose Anser anser with five eggs at Reinøya, Troms County, ...

Observed and projected changes in urbanization and nature conservation in a typical fast growing city of Ethiopia, Jimma

Aticho, Abebayehu; Beyene, Abebe; Zelelew, Shimelis Aynalem; Nigussie, Abebe; Gutema, Tariku Mekonnen; Bakkestuen, Vegar; Chala, Desalegn (Peer reviewed; Journal article, 2023)

Urbanization poses a signifcant threat to biodiversity, particularly in developing nations characterized by high rural–urban migration and inadequate urban planning that fails to consider nature conservation. Insufcient ...

Occupancy versus colonization–extinction models for projecting population trends at different spatial scales

Nordén, Jenni; Harrison, Philip J.; Mair, Louise; Siitonen, Juha; Lundström, Anders; Kindvall, Oskar; Snäll, Tord (Peer reviewed; Journal article, 2020)

Understanding spatiotemporal population trends and their drivers is a key aim in population ecology. We further need to be able to predict how the dynamics and sizes of populations are affected in the long term by changing ...

Occupancy-based monitoring of ungulate prey species in Thailand indicates population stability, but limited recovery

Phumanee, Worrapan; Steinmetz, Robert; Phoonjampa, Rungnapa; Bejraburnin, Thawatchai; Grainger, Matthew; Savini, Tomaso (Peer reviewed; Journal article, 2020)

Longitudinal studies of wildlife are urgently needed in South-East Asia to understand population responses to the high poaching pressure that characterizes this region. We monitored population trends and habitat use of ...

Occurrence and seasonality of Gyrodactylus salaris and G. salmonis (Monogenea) on Arctic char (Salvelinus alpinus (L.)) in the Fustvatnet lake, Northern Norway

Mo, Tor Atle; Hansen, Haakon; Hytterød, Sigurd (Peer reviewed; Journal article, 2023)

Gyrodactylus spp. (Monogenea) were found on 16.9% (233 out of 1376) Arctic char, Salvelinus alpinus (L.), sampled from September 2010 to October 2011 in the Fustvatnet lake, Northern Norway. Two species were identified: ...

The occurrence of the cold-water coral Lophelia pertusa (Desmophyllum pertusum) on Equinor oil and gas structures in the North Sea

Järnegren, Johanna (NINA Report;2457, Research report, 2024)

This report has restricted access

Occurrence of the European eel in lakes in the northern part of its distribution area is limited to low-altitude coastal areas, likely due to topographical conditions

Foldvik, Anders; Ulvan, Eva M.; Thorstad, Eva B.; Hesthagen, Trygve (Peer reviewed; Journal article, 2019)

With the decline of the European eel, protection measures in all parts of the eel’s distribution area may be increasingly important. Norway has a vast coastline (58°–71°N), but the distribution of eel has been largely ...

Ocean climate and egg investment in the black-legged kittiwake Rissa tridactyla

Barrett, Robert T; Erikstad, Kjell E; Reiertsen, Tone (Journal article; Peer reviewed, 2017)

Birds allocate substantial resources to their eggs during the laying period, resources also needed for other concurrent costly processes such as mate acquisition, nest building and site defence. Egg and clutch sizes may ...

Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect

Bartlett, Jesamine; Convey, Peter; Hughes, K.A.; Thorpe, S.E.; Hayward, S.A.L. (Peer reviewed; Journal article, 2021)

The non-native midge Eretmoptera murphyi is Antarctica’s most persistent non-native insect and is known to impact the terrestrial ecosystems. It inhabits by considerably increasing litter turnover and availability of soil ...

Ocean predation and mortality of adult Atlantic salmon

Strøm, John Fredrik; Rikardsen, Audun; Campana, Steven E.; Righton, David; Carr, Jonathan; Aarestrup, Kim; Stokesbury, Michael J.W.; Gargan, Patrick; Caballero Javierre, Pablo; Thorstad, Eva B. (Peer reviewed; Journal article, 2019)

Ocean-wide drivers of migration strategies and their influence on population breeding performance in a declining seabird

Fayet, Annette L.; Freeman, Robin; Anker-Nilssen, Tycho; Diamond, Antony; Erikstad, Kjell E; Fifield, Dave; Fitzsimmons, Michelle G; Hansen, Erpur Snær; Harris, Mike P.; Jessopp, Mark; Kouwenberg, Amy-Lee; Kress, Steve; Mowat, Stephen; Perrins, Chris M.; Petersen, Aevar; Petersen, Ib K.; Reiertsen, Tone; Robertson, Gregory J.; Shannon, Paula; Sigurðsson, Ingvar A.; Shoji, Akiko; Wanless, Sarah; Guilford, Tim (Journal article; Peer reviewed, 2017)

Which factors shape animals’ migration movements across large geographical scales, how different migratory strategies emerge between populations, and how these may affect population dynamics are central questions in ...