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 20 of 204 for “"Life-history traits"”.
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An analysis of the evolution of life history traits
The evolution and relationship between life-history traits has been a popular research topic over the past several decades. Previous research has generally focused on a single or small number of species, or a single trait. I utilized multiple trait-based datasets to create a collection of 777 …
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Local Adaptation for Life-History Traits in Silene Latifolia
A fundamental question in evolutionary ecology is how species adjust post colonization. The plant Silene latifolia was introduced to North America (NA) from Europe (EU) in the 1800s. The goal of this thesis was to test if Silene latifolia has become locally adapted across its range. My first …
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Life history traits and population processes in marine bivalve molluscs
In this thesis, I investigated the how the life history characteristics of the clam Mya arenaria determine the population response to chronic contaminant exposure. To predict the potential responses of a broadcast-spawning life history such as that of M. arenaria, I surveyed the literature on a …
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Life history traits that predispose South African linefishes to overexploitation
… a small-scale, multi-species fishery with a long history. The historical de facto open access nature of this fishery resulted in continuous declines in catches of many linefish species, and in 2000 the fishery was declared to be in a state of emergency. This led to a reduction of up to 70% within …
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Life history traits and population processes in marine bivalve molluscs
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1998.
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Lifetime fitness and changing life history traits in Red-cockaded Woodpeckers
… ecological and evolutionary questions related to life histories because monitoring them accurately is relatively easy, their behavior is well-described and structured. In this study, I examined the following questions using long-term data (1980-2013) from two study sites in North Carolina: 1) what …
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Functional diversity and life history traits of arbuscular mycorrhizal fungi in disturbed soils
Relative effectiveness of ten species of arbuscular mycorrhizal fungi native to a revegetated coal strip mine site was tested on red clover against a non-mycorrhizal control and against inocula of two commercial isolates. Most (70%) of the isolated species in a native fungal community were as …
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Plant Community Invasibility in Riparian Landscapes: Role of Disturbance, Geomorphology, and Life History Traits
The majority of this dissertation focuses on the ecology of non-native, invasive riparian plants, river regulation, and the potential for restoration. For chapters one and two, I researched different aspects of the <italic>Tamarix</italic> invasion along the Colorado River through the Grand Canyon. …
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Spatial and Temporal Variation in Lake Huron Yellow Perch (Perca flavescens) Life History Traits
… of discrete groups to external stressors. Life history traits are very useful indicators of population structure because they provide information about fish populations that incorporates elements of genetics, environment, and resource use simultaneously. In Lake Huron, the yellow perch …
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Factors affecting the phenologies of life history traits in two summer annual plant species
… effect evolutionary change in the phenologies of life history events. Three studies were undertaken to document the amount of phenotypic variation in the phenologies of life history traits, the degree to which selection is acting on these phenologies, and the heritable basis of and genetic …
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Influence of diet on black soldier fly (hermetia illucens linnaeus) (diptera: stratiomyidae) life history traits
The Black soldier fly, Hermetia illucens (Linnaeus) (Diptera: Stratiomyidae) is a large 2cm long fly that is native to North America. Larvae are naturally found consuming a wide range of decomposing organic material and therefore has a potential to be used as an agent for waste management. Larvae …
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Taxonomy, faunistics and life-history traits of Dytiscidae and Noteridae (Coleoptera) in a West African savannah
The studies inventoried the species of the families Dytiscidae and Noteridae (Coleoptera) in Comoé National Park in northern Ivory Coast, West Africa and investigated the ecological role of temporary and permanent water bodies for the aestivation of these aquatic beetles. The ecological studies …
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HOW SEWAGE POLLUTION AFFECTS DISTRIBUTION AND LIFE HISTORY TRAITS OF THE SOUTHERN HOUSE MOSQUITO, CULEX QUINQUEFASCIATUS
… larvae to see how water type affects their life history strategies. I found that species composition and water quality differed significantly between ditch type, and nutrient composition differed significantly between <em>Ae. albopictus</em> and <em>Cx. quinquefasciatus</em> within ditches. …
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Population variation in the life history traits and thermal responses of Atlantic cod, Gadus morhua L.
… a wide distribution and geographic variation in life history traits. Life history traits were investigated in cod from three areas around the British Isles of differing thermal regimes, namely St Andrews Bay on the Scottish east coast, the Clyde Sea on the Scottish west coast, and from near …
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Breeding ecology and related life-history traits of the hoatzin, Opisthocomus hoazin, in a primary rainforest habitat
… in Ecuador situated in the Cuyabeno Wildlife Reserve (between 0°02’ N, 76°0’ W, 0°03’ S, and 76°14’ W). The area is composed of various black water lagoons and small rivers, flooded forests and terra firme forest. Primarily, I examined group composition and breeding pattern and success …
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Measuring variation in body morphology and life history traits in Brook Stickleback (Culaea inconstans), Eastern Washington, USA
… by phenotypic plasticity, flexibility of life history traits, and the ability to migrate/disperse, among other factors. Brook stickleback (Culaea inconstans) have been a concern in eastern Washington since 1999 when they were discovered in water bodies on Turnbull National Wildlife Refuge. …
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Toward a Restoration Protocol for Mediterranean Red Coral: Incorporating Life History Traits, Genetics, Demography, and Experimental Approaches
… describe the ecological trajectory of early life history stages of C. rubrum (Chapter 2); and (2) genetics, trying to highlight the importance of incorporating genetic diversity into restoration efforts (Chapter 3). Thanks to an approach that included in-situ and ex-situ experimentations, I …
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