Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"territory size"”.
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Optimal territory size in the convict cichlid (Cichlasoma nigrofasciatum)
Simple models of optimal territory size have most commonly been tested qualitatively by demonstrating that an increase in food abundance or intruder pressure causes a decrease in territory size. However, the most fundamental predictions of the theory have rarely been tested: i.e. the fitness of the …
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An assessment of factors influencing territory size and the use of hunter surveys for monitoring wolves in Montana
… (Nmin). To develop a POM robust to variation in territory size, I investigated how territory sizes of wolf packs were affected by ecological factors. In the future, when territory sizes cannot be estimated directly, these ecological factors can be used to predict and monitor changes in territory …
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An assessment of factors influencing territory size and the use of hunter surveys for monitoring wolves in Montana
… (Nmin). To develop a POM robust to variation in territory size, I investigated how territory sizes of wolf packs were affected by ecological factors. In the future, when territory sizes cannot be estimated directly, these ecological factors can be used to predict and monitor changes in territory …
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The allometry of territory size and metabolic rate as predictors of self-thinning in young-of-the-year Atlantic salmon (Salmo salar)
… self-thinning mechanisms have been proposed. The territory-size hypothesis predicts that maximum population density for a given body size is set by the allometry of territory size. The energetic equivalence hypothesis suggests that if there is a constant amount of energy flowing through a …
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Mister Parid's Neighborhood: Dispersal Behavior and Flocking Dynamics of the Social Black-crested Titmouse (Baeolophus atricristatus)
… as weight or sex, or extrinsic factors, such as territory size or habitat composition, affect the natal dispersal of the BCTI; (2) determine whether BCTI flock or territory size varied across seasons; and (3) examine the social dynamics of familial related BCTI individuals. Between 2013-2015, 263 …
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Diversity and Density of Shelterbelt Bird Communities
… will not reside in shelterbelts below a minimum size due to the large territory size these birds require. However, minimum area does not explain the upper limit placed on the number of species that will coexist in shelterbelts. Diffuse utilization of the limited food supplies was postulated as …
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Determinants and consequences of territory quality in the Bar-throated Apalis Apalis thoracica
… the ecological factors influencing variation in territory size and quality among Bar-throated Apalises Apalis thoracica; ii) to investigate the consequences of these factors for reproductive effort and reward, pair stability and survival; and iii) to investigate the signalling properties of the …
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The socio-ecology and social behaviour of the brown hyaena Hyaena Brunnea, Thunberg, 1820 in the southern Kalahari.
… of dispersing subadults and nomadic adult males. Territory size is mainly affected by the dispersion pattern of the food in the territory and group size by the "quality" of the food. Mating is carried out between nomadic males and group-living females and group-living males help with the feeding …
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Habitat selection in the yellow-breasted chat
… Each vegetation variable was regressed against territory size and against a measure of chat density. It was assumed that both smaller territories and territories having a greater number of territories surrounding them contained better quality habitat. Chats appear to choose their habitat on the …
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Cooperative breeding and delayed dispersal in the Pale chanting goshawk, Melierax canorus
… success than did density of dominant prey and territory size. In Karroid Broken Veld co-breeders delayed dispersal since their fitness as subordinate sibling males was probably higher than fitness achieved due from dispersing to a breeding vacancy in habitat of lower quality. I suggest that …
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Foraging Ecology of Parrotfishes in the Greater Caribbean: Impacts of Specialization and Dietary Preferences on Marine Benthic Communities
… rates, diet preferences, and foraging territory size in relation to natural variation across sites in preferred resource abundance. We found that the more-specialized parrotfishes increased their dietary specialization, had smaller foraging territories, and increased their feeding rate …
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Behavioural, mensural, and ecological correlates of polygyny in the eastern meadowlark (Sturnella magna)
… I studied male attributes and attributes of the territory of male Eastern Meadowlarks (Sturnella magna) in order to determine whether there was a correlation between any of the attributes investigated and the number of females attracted by a male. Seventeen males, nine of which were polygynous …