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Vekstvariasjon for årsyngel for ørret, Salmon trutta, i relasjon til fisketetthet 
Dønnum, Bjørn Otto (Master thesis / Hovedoppgave, 2007)
I dette studiet har jeg undersøkt i hvilken grad lengdefordelingen for 0+ ørret Salmo trutta ved vekstsesongens slutt kan forklares med variasjon i tetthet ( 0+, eller eldre ørret) og ulike miljøvariabler som varierer ...
Parental care in relation to paternity in the reed bunting (Emberiza schoeniclus) 
Brenna, Erik (Master thesis / Hovedoppgave, 2007)
This study describes the male and female role in parental care in a Norwegian population of reed buntings (Emberiza schoeniclus). The population has an extensive level of extra-pair young (EPY), with 30% of the offspring ...
Effect of isolation on pairing success within an endangered population of Ortolan bunting (Emberiza hortulana) in Norway. 
Starholm, Trude (Master thesis / Hovedoppgave, 2007)
ABSTRACT Small, isolated and fragmented bird populations are more vulnerable to extinction and studies have shown that they can have a high proportion of unpaired males. Female-biased natal dispersal could be an explanation ...
Males do not adjust feeding rate to egg colour in a Norwegian population of pied flycatchers Ficedula hypoleuca 
Vesterkjær, Kristin (Master thesis / Masteroppgave, 2007)
According to the differential allocation hypothesis, an individual will invest more in an offspring when mated to a high than low qality mate. The blue/green eggshell coluration of pied flycatcher (Ficedula hypoleuca), has ...
Evolutionary aspects of gift-giving dynamics among Norwegian students 
Låberg, Kyrre Traavik (Master thesis / Hovedoppgave, 2007)
Data from questionnaires filled out by 336 students during a nine day period in January and February 1999 at the University of Oslo, Norway was analyzed to find patterns in gift-giving behavior corresponding to predicted ...
On behavioural responses to smell and sight of alpine bullhead Cottus poecilopus Heckel for an allopatric and a sympatric population of brown trout Salmo trutta L. 
Hauge, Joakim (Master thesis / Hovedoppgave, 2007)
Freshwater sculpins and salmonids coexist in many streams throughout the Northern hemisphere, and often constitute an important component of stream ecosystems. Alpine bullhead Cottus poecilopus Heckel have been known to ...
Red Queen evolution driven by asymmetric competition 
Starrfelt, Jostein (Master thesis / Hovedoppgave, 2006)
The Red Queen hypothesis states that biological entities rather than abiotic factors constitute the larger part of the selective environment experienced by individual organisms, and that species as a consequence undergo ...
Parent great tits (Parus major) do not adjust prey size to nestling size 
Bratland, Silje (Master thesis / Masteroppgave, 2006)
Altricial nestlings hatch at an early stage of development, and depend on their parents to feed them. The quality of the parental care is of great significance to the nestlings fitness and future survival. In the early ...
Factors influencing the amount of extra-pair young in a willow warbler population Phylloscopus trochilus 
Prøven, Mads Peder (Master thesis / Hovedoppgave, 2005)
We studied a willow warbler (Phylloscopus trochilus) population breeding in Øvre Heimdalen, in Valdres, Norway. Several previous studies have found large differences in the amount of EPY (extra- pair young) in the broods ...
Taxonomy and systematics of Gyrodactylus salaris (Monogenea, Gyrodactylidae) infecting wild populations of Arctic charr (Salvelinus alpinus) in Norway 
Robertsen, Grethe (Master thesis / Hovedoppgave, 2005)
Grazing facilitation or delayed competition between reindeer and sheep. : an experimental study of reindeer feeding preference. 
Jørgensen, Nicolai Hermann (Master thesis / Masteroppgave, 2005)
There is considerable controversy regarding the effect of sheep grazing on reindeer populations in Norway. Sheep grazing during summer may affect the critical fall, winter and spring range conditions for reindeer either ...
Gastrointestinal nematodes (Nematoda: Trichostrongyloidea) in cattle (Bos taurus), moose (Alces alces) and roe deer (Capreolus capreolus) in southern Norway. The effect of anthelmintic treatment in relation to a possible cross-infection. 
Kongsbak, Ruth Helene (Master thesis / Masteroppgave, 2005)
The presence of gastrointestinal nematodes is considered to be a problem in domestic cattle, and various studies have tried to present reasons for and solutions to this problem. A study was conducted in Southern Norway in ...
Bevegelsesmønster hos radiomerket ulv (Canis lupus) i Østfold, Norge 2000-2001 
Jarnæs, Ida Glemminge (Master thesis / Hovedoppgave, 2005)
Ulvens (Canis lupus) områdebruk, døgnrytme og bevegelsesmønster i forhold til menneskelig aktivitet og infrastruktur ble studert i Østfold fylke, 3-6 mil sør for Oslo. Studieområdet er et skog- og jordbruksområde med en ...
From pattern to process : extracting ecology from time series 
Svennungsen, Thomas Owens (Master thesis / Hovedoppgave, 2005)
Abstract Patterns in time series are observational records of past ecological processes, and identifying these processes remains a major challenge to population ecologists. Until recently, analysis of time series has ...
Feeding strategies in great tit (Parus major): Do parents adjust prey size to nestlings' size? 
Korsager, Majken (Master thesis / Hovedoppgave, 2004)
The feeding behavior is favored by natural selection in the past and is based on getting a high fitness by maximizing net energy intake. Reproductive success among altricial birds is closely related to feeding strategies ...
Individual identification of red deer (Cervus elaphus) based on DNA extractions from faeces. 
Kvernstuen, Liv Guro (Master thesis / Hovedoppgave, 2004)
Recent advances in molecular genetic techniques have made it possible to genotype DNA extracts from non-invasive samples such as hair, faeces, and urine. Subsequent identification of individuals from such material has ...
Non-lethal effects of avian predators on root voles (Microtus oeconomus). 
Eikenes, Kirsti Lene (Master thesis / Hovedoppgave, 2004)
Abstract Anti-predation behaviour in many rodents has mainly been studied under laboratory conditions, and less in naturally conditions in the field. Here we studied the results of an experiment specifically designed for ...
 
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Date Issued2007 (6)2006 (2)2005 (6)2004 (3)Document TypeHovedoppgave (13)Masteroppgave (4)AuthorBratland, Silje (1)Brenna, Erik (1)Dønnum, Bjørn Otto (1)Eikenes, Kirsti Lene (1)Hauge, Joakim (1)... View More
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