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Now showing items 31-40 of 45
Integrating biodiversity and landscape ecosystem processes: tests with freshwater mussels
(2011)
As humans alter the environmental landscape, ecosystems become increasingly imperiled due to habitat alteration and the associated species extinctions and extirpations. Consequently, recent research has often focused on ...
INTERACTIONS BETWEEN FRESHWATER MUSSELS, MERCURY CONTAMINATION, AND GLOBAL CLIMATE CHANGE IN FRESHWATER SYSTEMS
(2017)
Humans are impacting the environment at an unprecedented scale, with anthropogenic activities altering environmental processes and cycles planet-wide. Centuries of gold mining and coal burning has more than tripled the ...
From individuals to environment: the relative roles of morphology, flight, density, synchrony, habitat structure, and weather on extra-pair paternity
(2016-08)
Reproductive success is driven in large part by the mating system of a species, which ultimately determines patterns of gene transmission across generations. In species with socially monogamous mating systems, an important ...
Nutrient availability and the structure and function of brown food webs
(2013-11-25)
Understanding individual nutritional requirements can generate good predictions for how communities should be structured and how ecosystems function over gradients of nutrient availability. Aboveground consumers can shape ...
USING RADAR TO REVEAL LARGE-SCALE IN-FLIGHT BEHAVIORS OF MIGRATORY BIRDS
(2017-05-12)
The shortest possible migratory route for birds is not always the best route to travel. Substantial research effort has established that birds in captivity are capable of orienting toward the direction of an intended goal, ...
MOLECULAR EVOLUTION OF OXIDATIVE PHOSPHORYLATION GENES
(2015-08)
Physiological processes may serve as mechanistic links between organismal genotypes and phenotypes. Accordingly, adaptations in genes involved in energy metabolism pathways may facilitate the evolution of organismal ...
Increase and Maintenance of Community Diversity by Positive Frequency-dependent Predation in the Tierra System
(2012)
Ecological communities often contain a wide diversity of species but how different species may arise and stably coexist, especially in homogenous spatial environments, is poorly understood. In this dissertation, I use the ...
Life-history evolution in livebearing fishes (Teleostei: Poeciliidae)
(2010)
Life histories lie at the heart of biology, because the tradeoffs each organism faces concerning the distribution of limited resources into either reproduction or maintenance and growth determine that organism's fitness. ...
Insulin signaling regulates neurite growth during ecdysone-dependent neuronal remodeling
(2012)
The morphological rearrangement of neurons to accommodate new functions or activities is called "neuronal remodeling". Although neuronal remodeling is an important feature of nervous systems, the mechanisms governing the ...
THE ROLE OF BIOGEOCHEMISTRY AND CLIMATE IN A NEOTROPICAL ANT COMMUNITY
(2017)
Human activities are rapidly changing nutrient availability and climate across the globe, and this trend is predicted to continue. The effect of biogeochemistry on consumer communities is underexplored in the world’s most ...