353 results — type: Thesis

Thesis

The effect of mermithid parasitism on the behavior and ecology of its mayfly host

1996
Thesis

Epibiont populations on <i>Daphnia</i>: effects of habitat patch dispersion on metapopulation dynamics

1995
Thesis

Proximal Causes of Dispersal in Yellow-bellied Marmots

1984
Thesis

Organization of a plant-pollinator community in a seasonal environment

1984
Thesis

Population and habitit analyses of two endemic Colorado plants under the guidelines of the Endangered Species Act of 1973

1982
Thesis

The ecology and evolution of pathogens in a changing world

Infectious diseases are an integral part of natural ecosystems but also pose a serious threat to human health and agriculture. Understanding the multitude of factors shaping the epidemiology and evolution of pathogens is crucial for predicting and mitigating their effects, especially in a rapidly ch

2022
Thesis

Using geochemical indicators to distinguish high biogeochemical activity in the subsurface.

2015
Thesis

Roles of pollinators, seed predators, and vertebrate herbivores in maintaining females in the gynodioecious <i>Polemonium foliosissimum</i>.

Most flowering plants are hermaphroditic, reproducing through seed set and seed siring. In gynodioecious species, some individuals are female and only reproduce through seed set. Because females do not gain fitness through pollen, they must have a seed fitness advantage over hermaphrodites to be mai

2014
Thesis

The effects of anthropogenic change on pollination in plant-pollinator communities

The effects of anthropogenic change on pollination in plant-pollinator communities by Loy Xingwen Pollinators facilitate reproduction in ~80% of global plant species, making them integral to many agricultural and natural ecosystems. For over 200 years, western scientists have been fascinated by the

2021
Thesis

Developmental Thresholds, Life History Trade-Offs, and Resource Allocation in Wetland Caddisflies (Trichoptera)

2005
Thesis

Effects of nutrient limitation on floral function and biomass allocation in <i>Geranium richardsonii</i>

2007
Thesis

Water quality in dynamic redox environments: Coupled hydrologic-biogeochemical controls on metal contaminant mobility

Rising population and changing climate threaten to increase the risks posed by anthropogenic and geogenic metal contaminants to our freshwater resources. Increased human demand for freshwater coupled with altered hydrologic cycles will shift (bio)geochemical conditions in soils and sediments, potent

2020
Thesis

Seasonal manganese transport in the hyporheic zone of a snowmelt-dominated river (East River, Colorado)

Manganese (Mn) plays a critical role in river water quality since Mn-oxides serve as

2019
Thesis

Pollinator mediated reproductive consequences of altered co-flowering under climate change depend on abiotic context

Pollinator mediated reproductive consequences of altered co-flowering under climate change depend on abiotic context

2019
Thesis

The persistent maladaptation of <i>Pieris macdunnoughii</i>: Constraints on adaptation to an evolutionary trap

Evolutionary traps arise when organisms use novel, low-quality or even lethal resources based on previously reliable cues. Persistence of such maladaptive interactions depends not only on how individuals locate important resources, such as host plants, but also the mechanisms underlying poor perform

2019
Thesis

Ecological Genetics of Dispersal and Mating Systems in Populations of Yellow-Bellied Marmots (<i>Marmota flaviventris</i>)

2003
Thesis

Host-parasite ecology of <i>Baetis bicaudatus</i> mayflies and <i>Gasteromermis sp.</i> nematodes in high-altitude streams

Parasite-induced changes to host dispersal potentially influence the distribution of parasites and infection risk for hosts. Gasteromermis is a castrating endoparasitic nematode that infects both males and female mayflies (Baetis bicaudatus) but feminizes male hosts and manipulates them to disperse

2018
Thesis

Cross-trophic-level dynamics in aquatic ecosystems and their application across ecological contexts

2023
Thesis

Disintegration of the leaf economic spectrum within and across Quaking aspen (<i>Populus tremuloides</i>) genotypes

1. The leaf economic spectrum (LES) describes consistent and strong correlations among plant functional traits in a multidimensional trait space, which reflects fast or slow rate of return on carbon investment in leaves. These relationships between LES functional traits are strong at global scales a

2018
Thesis

Physiological ecology of the yellow-bellied marmot

1980