Open Access. Powered by Scholars. Published by Universities.®
Ecology and Evolutionary Biology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Lake Michigan (2)
- Bioluminescence (1)
- Carbon Acquisition (1)
- Cross-Trophic (1)
- Developmental Plasticity (1)
-
- Dissolved Inorganic Carbon (1)
- Dreissenid Mussels (1)
- Environment (1)
- Extra-Pair Mating (1)
- Food Web (1)
- Global Change (1)
- Herbaceous (1)
- House Wren (1)
- Indirect Genetic Effects (1)
- Intertidal (1)
- Larval Fish (1)
- Lux Operon (1)
- Luxr Homolog (1)
- Macaca Mulatta (1)
- Macaque (1)
- Modelling (1)
- Mysis (1)
- Oak (1)
- Omnivory (1)
- PH Drift (1)
- Pine (1)
- Plant-insect Interactions (1)
- Preference Functions (1)
- Quorum Sensing (1)
- Reproduction (1)
Articles 1 - 8 of 8
Full-Text Articles in Ecology and Evolutionary Biology
Lake Michigan Hydrodynamics: Mysis And Larval Fish Interactions, Yutta Wang
Lake Michigan Hydrodynamics: Mysis And Larval Fish Interactions, Yutta Wang
Theses and Dissertations
I studied the interactions between Lake Michigan hydrodynamics (the spring thermal bar) and Mysis, deepwater sculpin, and burbot larvae. The thermal bar is a zone of sinking 4º С water that separates warmer inshore water from colder offshore water. Mysis was a major bycatch of sampling for larval fishes. The density of Mysis did not differ statistically between inshore (about 6º С) and offshore of the thermal bar, but the percentage of Mysis that were newborns was significantly higher inshore (P = 0.007). These "early start" coastal Mysis may have an advantage in growth and survival, but with the risk …
Influence Of Genetic Variation In The Biotic Environment On Phenotypic Variation In A Plant-Feeding Insect, Darren Rebar
Influence Of Genetic Variation In The Biotic Environment On Phenotypic Variation In A Plant-Feeding Insect, Darren Rebar
Theses and Dissertations
While many species spend much of their lives in close association with other organisms, only recently have biologists started to explore the implications of the biotic nature of environments for their role as causes of variation in phenotypes. This means that the genotypes of individuals that constitute the biotic environment may influence the phenotypes of individuals that live in that environment. These are called indirect genetic effects (IGEs) when they occur between conspecifics, and interspecific indirect genetic effects (IIGEs) when they occur between heterospecifics. However, the impact of genetic variation in biotic environments remains largely unknown. I used a member …
Evaluating The Influence Of Environmental Factors On The Rate Of Extra-Pair Matings In Tropical And Temperate Populations Of The House Wren (Troglodytes Aedon), Kaitlin Claire Mckenney
Evaluating The Influence Of Environmental Factors On The Rate Of Extra-Pair Matings In Tropical And Temperate Populations Of The House Wren (Troglodytes Aedon), Kaitlin Claire Mckenney
Theses and Dissertations
Considerable variation exists in the rate of extra-pair matings (EPMs) in birds. Environmental variability likely influences EPM rates within species, but the effects of local environmental factors on EPM rates are largely unpredictable. To determine whether broad-scale environmental factors might be better predictors of EPM rates within species, we quantified levels of extra-pair paternity in the house wren (Troglodytes aedon) in four populations spanning a range of latitude, elevation, and primary productivity (measured by actual evapotranspiration rates). Our results indicated an intermediate and variable level of EPM among populations (6 -31% extra-pair young) that was not significantly affected by 3 …
Habitat Matters For Inorganic Carbon Acquisition In 38 Species Of Red Macroalgae (Rhodophyta) From Puget Sound, Washington, Usa, Maurizio Murru
Habitat Matters For Inorganic Carbon Acquisition In 38 Species Of Red Macroalgae (Rhodophyta) From Puget Sound, Washington, Usa, Maurizio Murru
Theses and Dissertations
The ability of macroalgae to photosynthetically raise the pH and deplete the inorganic carbon pool from the surrounding medium has been in the past correlated with habitat and growth conditions. The objectives of this study were 1) to test for differences among a variety of red algal species in their ability to deplete the dissolved inorganic carbon pool (DIC) from the surrounding medium, and to utilize the HCO3- fraction of the DIC, 2) to determine whether these differences were associated with red algal habitat defined as intertidal height and subtidal depth, and/or with taxonomic affinities of the species …
Seasonality Of Conceptions Under Varying Conditions In A Rhesus Macaque Breeding Colony, Ryan Disney Patrick Dunk
Seasonality Of Conceptions Under Varying Conditions In A Rhesus Macaque Breeding Colony, Ryan Disney Patrick Dunk
Theses and Dissertations
Rhesus macaques (Macaca mulatta) are well documented as seasonal breeders. Despite this, little is known about what factors influence seasonal reproduction in rhesus. It has been proposed that rhesus are "relaxed income breeders" (Brockman and van Schaik, 2005), which means they respond to changes in photoperiod but endogenous cues can allow deviations from photoperiod-timed seasonality. This study presents the results of a natural experiment on the influence of different housing conditions (featuring different levels of environmental exposure) on the seasonal pattern of reproduction in rhesus. Once the number of attempts was controlled for, rhesus did not exhibit a seasonal distribution …
Changes In The Lake Michigan Trophic Structure: As Revealed By Stable C And N Isotopes, Benjamin Turschak
Changes In The Lake Michigan Trophic Structure: As Revealed By Stable C And N Isotopes, Benjamin Turschak
Theses and Dissertations
Food web structures which incorporate both slow (nearshore or detrital) and fast (pelagic) energy channels convey stability upon food web biota through asynchrony and multichannel trophic omnivory. Within the Lake Michigan food web, invasive dreissenid mussels have caused rapid changes to food web structure and energy flows. I used stable C and N isotopes and gut content analysis to determine how Lake Michigan food web structure and stability has changed in the past decade, coincident with the expansion of dreissenid mussels and a decrease in pelagic phytoplankton production. Fish and invertebrate samples collected near the port of Milwaukee, WI were …
Quorum Sensing In Vibrios And Cross-Species Activation Of Bioluminescence Lux Genes By Vibrio Harveyi Luxr In An Arabinose-Inducible Escherichia Coli Expression System, Anne Marie Wannamaker
Quorum Sensing In Vibrios And Cross-Species Activation Of Bioluminescence Lux Genes By Vibrio Harveyi Luxr In An Arabinose-Inducible Escherichia Coli Expression System, Anne Marie Wannamaker
Theses and Dissertations
Bacterial bioluminescence is observed in over twenty known species, primarily in the family Vibrionaceae. However, only Vibrio fischeri and Vibrio harveyi bioluminescence expression mechanisms are well studied. In V. harveyi, expression of the lux operon is activated by the transcription factor LuxR (LuxRVH), resulting in bioluminescence. Homologs of LuxRVH in other Vibrio species have been shown to regulate transcription of a variety of genes. Three parallel quorum sensing pathways co-regulate the expression of LuxRVH. The first objective was to assess possible quorum sensing regulation of lux operon expression in V. cholerae, V. chagasii, …
The Shifting Importance Of Competition And Facilitation Along Diversity, Environmental Severity, And Plant Ontogenetic Gradients, Alexandra Wright
The Shifting Importance Of Competition And Facilitation Along Diversity, Environmental Severity, And Plant Ontogenetic Gradients, Alexandra Wright
Theses and Dissertations
Ecological theory and empirical studies have focused heavily on the importance of competition in plant communities. Competition can help explain species coexistence, the maintenance of species diversity, and biological invasions. Competition for resources appears to be ubiquitous among coexisting organisms. This overwhelming focus on competition over the past one hundred years may have overshadowed the importance of positive interactions (facilitation). Growing near your neighbors involves competition for resources, but it also involves alteration of a shared microclimate. Neighboring plants have the capacity to increase shade, decrease air temperatures, increase humidity, and increase shallow soil moisture in their local environment. In …