Blar i NTNU Open på forfatter "Herfindal, Ivar"
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Gaupe og rådyr i Sørøst-Norge. Oversikt over gjennomførte aktiviteter 1995-2004 : Rovvilt og Samfunn (RoSa)
Andersen, Reidar; Odden, John; Linnell, John Durrus; Herfindal, Ivar; Panzacchi, Manuela; Høgseth, Øystein; Gangås, Lars; Brøseth, Henrik; Solberg, Erling; Hjeljord, Olav (NINA rapport;29, Research report, 2005)Denne rapporten oppsummerer kort mye av aktiviteten på gaupe- og rådyrprosjektet i Sørøst-Norge de siste 10 åra.Rapporten er i hovedsak ment som en oversiktsrapport til våre hovedfinansieringskilder, Norges ... -
Generation time and seasonal migration explain variation in spatial population synchrony across European bird species
Martin, Ellen Claire; Hansen, Brage Bremset; Lee, Aline Magdalena; Herfindal, Ivar (Peer reviewed; Journal article, 2023)Spatial population synchrony is common among populations of the same species and is an important predictor of extinction risk. Despite the potential consequences for metapopulation persistence, we still largely lack ... -
Habitat characteristics and small-scale variation in life history traits of a large herbivore
Langen, Siri Hånes (Master thesis, 2018)Identification of habitat characteristics shaping small-scale variation in life history traits is important for our understanding of the magnitude of small-scale resource utilisation for different life history traits. Based ... -
Highways associated with expansion of boreal scavengers into the alpine tundra of Fennoscandia
Rød-Eriksen, Lars; Skrutvold, Johanna; Herfindal, Ivar; Jensen, Henrik; Eide, Nina Elisabeth (Peer reviewed; Journal article, 2020)1. Habitat fragmentation may affect species distributions through, for example, altered resource availability and shifts in species interactions. Fragmentation by roads has had negative impacts on Fennoscandian alpine ... -
Hjortevilt og trafikk i Norge: En analyse av hjorteviltrelaterte trafikkulykker i perioden 1970-2007
Solberg, Erling Johan; Rolandsen, Christer Moe; Herfindal, Ivar; Heim, Morten (NINA Rapport;463, Research report, 2009)Hjorteviltet er en viktig naturressurs i Norge, med stor økonomisk og rekreasjonsmessig betyd-ning for jaktrettshavere og jegere. I takt med stadig økende bestandstetthet ser vi også økende samfunnskostnader forbundet med ... -
Individual and temporal variation in habitat association of an alien carnivore at its invasion front
Melis, Claudia; Herfindal, Ivar; Dahl, Fredrik; Åhlén, Per-Arne (Journal article, 2015)Gathering information on how invasive species utilize the habitat is important, in order to better aim actions to reduce their negative impact. We studied habitat use and selection of 55 GPS-marked raccoon dogs (30 males, ... -
“Individual Variation in Site Fidelity of Moose”
Dahal, Pooja (Master thesis, 2023)1. Site fidelity, the tendency of animals to return to the same areas within or among the years can contribute to maximizing individual fitness by improving survival and reproduction. Seasonal and temporal variation of ... -
Influence of migratory ungulate management on competitive interactions with resident species in a protected area
Anderwald, Pia; Herfindal, Ivar; Haller, Rudolf; Risch, Anita C.; Schütz, Martin; Schweiger, Anna K.; Filli, Flurin (Journal article; Peer reviewed, 2015)Migratory animals can represent links between protected and unprotected parts of their home ranges. Management of such species outside a conservation area can influence species interactions inside the protected zone. This ... -
Ivaretagelse av ville pollinatorer og planter tilknyttet kulturlandskapet i byutviklingen. Oppsummering av forskningsprosjektet BE(E) DIVERSE
Johansen, Line; Albertsen, Elena; Bär, Annette; Hanslin, Hans Martin; Herfindal, Ivar; van der Veen, Bert; Henriksen, Marie Vestergaard; Vinge, Heidi; Wehn, Sølvi; Solbu, Erik (NIBIO Rapport, Research report, 2023)Det er en global nedgang av ville pollinatorer, og hovedårsaken til dette er at leveområdene deres er under press og går tapt på grunn av urbanisering og andre arealendringer. I BE(E) DIVERSE prosjektet har vi derfor studert ... -
Lack of sex-specific movement patterns in an alien species at its invasion front - consequences for invasion speed
Herfindal, Ivar; Melis, Claudia; Åhlén, Per-Arne; Dahl, Fredrik (Journal article; Peer reviewed, 2016)Efficient targeting of actions to reduce the spread of invasive alien species relies on understanding the spatial, temporal, and individual variation of movement, in particular related to dispersal. Such patterns may differ ... -
Large-scale spatiotemporal variation in road mortality of moose: Is it all about population density?
Rolandsen, Christer Moe; Solberg, Erling Johan; Herfindal, Ivar; Van Moorter, Bram F. A.; Sæther, Bernt-Erik (Journal article; Peer reviewed, 2011)Ungulate‐vehicle collisions (UVC) constitute a widespread and increasing problem in large parts of the world. This has generated an intensive search for mitigating measures, but often based on a weak understanding of the ... -
Life history consequences of environmental variation along ecological gradients in northern ungulates
Herfindal, Ivar (Doktoravhandlinger ved NTNU, 1503-8181; 2006:15, Doctoral thesis, 2006)Temporal and spatial variation in the environment can influence the performance of individuals in wild ungulate populations. Of particular importance is an understanding of the mechanisms that shape variation in individual ... -
Matvalg hos sau og storfe på skogsbeite
Wam, Hilde Karine; Herfindal, Ivar (NIBIO Rapport;, Research report, 2020)I ‘Skogsbeite-prosjektet’ (2012-2015) undersøkte vi matvalg hos sau og storfe på beite i produktiv lavlandsskog. Studien ble gjort i tre områder med ulik tetthet av dyr (ca. 17 dyr/km2 i Nannestad, 36 dyr/km2 på Vestskauen ... -
Modellering av heildekkande utbreiingskart for arter: Bakgrunn, konsept og arbeidsflyt
Finstad, Anders Gravbrøt; Herfindal, Ivar; Perrin, Sam Wenaas; O'Hara, Bob; Chipperfield, Joseph; Töpper, Joachim Paul (NTNU Gjærevollsenteret;1/2024, Research report, 2024)Ei heilskapleg kartlegging av naturverdiar er avgjerande for ei kunnskapsbasert forvalting av natur. Avvegingar mellom naturverdiar og andre samfunnsinteresser kan ikkje gjerast verken på internasjonalt, nasjonalt, regionalt ... -
Modellering av tap av tamrein til rovvilt - en risikomodell
Herfindal, Ivar; Brøseth, Henrik; Kjørstad, Morten Andre; Linnell, John Durrus; Odden, John; Persson, Jens; Stien, Audun; Tveraa, Torkild; Ersson, L. (NINA rapport;819, Research report, 2012)I januar 2011 fikk NINA i oppdrag av Direktoratet for naturforvaltning (DN) å vurdere om tilgjengelige forskningsdata kunne brukes til modellering av risikobasert erstatning for tap av tamrein til rovvilt. Oppdraget ble ... -
Moose Alces alces habitat use at multiple temporal scales in a human-altered landscape
Bjørneraas, Kari; Solberg, Erling Johan; Herfindal, Ivar; Van Moorter, Bram; Rolandsen, Christer Moe; Tremblay, Jean-Pierre; Skarpe, Christina; Sæther, Bernt-Erik; Eriksen, Rune; Astrup, Rasmus (Journal article; Peer reviewed, 2011)Habitat alteration by humans may change the supply of food and cover for wild ungulates, but few studies have examined how these resources are utilised over time by individuals of different sex and reproductive status. We ... -
The Moran effect revisited: spatial population synchrony under global warming
Hansen, Brage Bremset; Grøtan, Vidar; Herfindal, Ivar; Lee, Aline Magdalena (Peer reviewed; Journal article, 2020)The world is spatially autocorrelated. Both abiotic and biotic properties are more similar among neighboring than distant locations, and their temporal co-fluctuations also decrease with distance. P. A. P. Moran realized ... -
On fitness and partial migration in a large herbivore – migratory moose have higher reproductive performance than residents
Rolandsen, Christer Moe; Solberg, Erling Johan; Sæther, Bernt-Erik; Van Moorter, Bram; Herfindal, Ivar; Bjørneraas, Kari (Journal article; Peer reviewed, 2016)Partially migratory populations comprise both resident and migratory individuals. Th ese tactics may coexist if their demographic contribution to future generations (i.e. fitness) are equal or vary temporally with environmental ... -
Opposing fitness consequences of habitat use in a harvested moose population
Ofstad, Endre Grüner; Markussen, Stine Svalheim; Sæther, Bernt-Erik; Solberg, Erling Johan; Heim, Morten; Haanes, Hallvard; Røed, Knut; Herfindal, Ivar (Peer reviewed; Journal article, 2020)1. Landscape changes are happening at an unprecedented pace, and together with high levels of wildlife harvesting humans have a large effect on wildlife populations. A thorough knowledge of their combined influence on ... -
Participatory monitoring drives biodiversity knowledge in global protected areas
Mandeville, Caitlin Marie; Nilsen, Erlend Birkeland; Herfindal, Ivar; Finstad, Anders Gravbrøt (Peer reviewed; Journal article, 2023)Protected areas are central in strategies to conserve biodiversity. Effective area-based conservation relies on biodiversity data, but the current biodiversity knowledge base is insufficient and limited by geographic and ...