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 7 of 7 for “"population regulation"”.
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Population ecology of Pleuroptya ruralis (Scopoli) (Pyralidae:Pyraustinae)
A natural population of Pleuroptya ruralis has been studied for three years with the following aims: (1) to elucidate its life history; (2) to study the variations in the larval and adult densities; (3) to identify the mortality factors acting upon them; (4) to investigate possible relationships …
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Population Ecology and Foraging Behavior of Breeding Birds in Bottomland Hardwood Forests of the Lower Roanoke River
… processes, such as nest predation. Bird populations are remarkably constant over time relative to other taxa, implying strong regulation. Avian population ecologists, however, have not studied regulatory mechanisms as often as seasonal limiting factors. Conversely, avian behavioral …
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A quantitative model of density-dependent habitat selection: integrating isodar and isoleg theories
… species-specific ecological preferences, and population regulation on species coexistence.
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Ecological niche responses of small mammals to gypsy moth disturbance
… in small mammal assemblage structure and population dynamics among four oak dominated sites at four different stages of gypsy moth disturbance: a high tree mortality site, a disturbance in process site, a disturbance recovery site, and an undisturbed reference site. More specifically, the …
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Habitat selection, food availability, and reproductive success of southwestern willow flycatchers on the South Fork Kern River, California
… breeds in the southwestern United States. The population of southwestern willow flycatchers on the South Fork Kern River in California was once thought to be one of the largest E. t. extimus populations. It declined from 38 pairs in 1997 to 12 pairs in 2000. My goals were to examine E. t. …
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Habitat use and responses to odours by rodents in New Zealand
… ecology and interactions is required to manage populations of these pests effectively. Snap trapping of Norway rats (Rattus norvegicus) and kiore (R. exulans) on Kapiti Island indicated that these species were associated with different habitats: most Norway rats were caught in steep, …
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Post-settlement processes and early life history dynamics of zebra mussels (Dreissena polymorpha) in the Hudson River estuary
… the dynamics of demographically “open” aquatic populations. Even though we often have a good understanding of events and processes that occur to visible adult stages, particularly those of economically important species, in most cases we know very little or nothing about processes occurring to …