Browsing EEB Faculty Publications by Title
Now showing items 43-62 of 65
-
Mitochondrial DNA Phylogeography of the Norway Rat
(2014)Central Eastern Asia, foremost the area bordering northern China and Mongolia, has been thought to be the geographic region where Norway rats (Rattus norvegicus) have originated. However recent fossil analyses pointed to ... -
Mutualistic interactions between Upiga virescens (Pyralidae), a pollinating seed-consumer, and Lophocereus schottii (Cactaceae)
(1999)Pollinating seed-consuming interactions are rare, but include fig–fig wasp and yucca–yucca moth interactions, both of which are thought to be coevolved. Conditions favoring such mutualisms are poorly known but likely ... -
A new social gene in Dictyostelium discoideum, chtB
(2013)Background: Competitive social interactions are ubiquitous in nature, but their genetic basis is difficult to determine. Much can be learned from single gene knockouts in a eukaryote microbe. The mutants can be competed ... -
Niche Differentiation in the Dynamics of Host-Symbiont Interactions: Symbiont Prevalence as a Coexistence Problem
(2014-04)Heritable symbioses can have important ecological effects and have triggered important evolutionary innovations. Current predictions for long-term symbiont prevalence are based on their fitness benefits and vertical ... -
Nitrogen, biochar, and mycorrhizae: Alteration of the symbiosis and oxidation of the char surface
(2014)In some cases amending soil with biochar improves fertility, although the exact mechanisms through which biochar alters soil processes are not well understood. In other cases, however, biochar amendment can have no effect ... -
Non-Native Plant Litter Enhances Soil Carbon Dioxide Emissions in an Invaded Annual Grassland
(2014)Litter decomposition is a fundamental ecosystem process in which breakdown and decay of plant detritus releases carbon and nutrients. Invasive exotic plants may produce litter that differs from native plant litter in quality ... -
Ontogenetic functional diversity: Size structure of a keystone predator drives functioning of a complex ecosystem
(2013)A central challenge in community ecology is to understand the connection between biodiversity and the functioning of ecosystems. While traditional approaches have largely focused on species-level diversity, increasing ... -
Phenological synchronization drives demographic rates of populations
(2015)Phenology is increasingly recognized as an important factor structuring communities because it determines when and at what life stage organisms interact. Previous work indicates that changes in first or mean timing of a ... -
Plant size and reproductive state affect the quantity and quality of rewards to animal mutualists
(2014)Many plants engage ants in defensive mutualisms by offering extrafloral nectar (EFN). Identifying sources of variation in EFN quantity (amount) and quality (composition) is important because they can affect ant visitation ... -
Population dynamics and the stability of obligate pollination mutualisms
(2001)Mutualistic interactions almost always produce both costs and benefits for each of the interacting species. It is the difference between gross benefits and costs that determines the net benefit and the per-capita effect ... -
Post-hibernation movement and foraging habitat of a male Indiana bat, Myotis sodalis (Chiroptera: Vespertilionidae), in western Virginia
(1995-12)We investigated departure patterns of bats from a higernculum and use of tree roosts and foraging habitat by a male Indiana bat (Myotis sodalis) in western Virginia with radio-telemetric techniques, cave populaiton surveys,and ... -
Resolving the roles of body size and species identity in driving functional diversity
(2014)Efforts to characterize food webs have generated two influential approaches that reduce the complexity of natural communities. The traditional approach groups individuals based on their species identity, while recently ... -
Revenge of the host: cannibalism, ontogenetic niche shifts, and the evolution of life-history strategies in host-parasitoid systems
(2012)Question: How does cannibalism in the host alter the evolution of a parasitoid’s oviposition strategy? Can differences in cannibalism risk between parasitized and healthy hosts alter the stage-specific foraging of parasitoids? ... -
Seed dispersal by Ceratogymna hornbills in the Dja Reserve, Cameroon
(1998-05)Seed dispersal is a process critical to the maintenance of tropical forests, yet little is known about the interactions of most dispersers with their communities. In the Dja Reserve, Cameroon, seed dispersal by the ... -
Sonoran Desert columnar cacti and the evolution of generalized pollination systems
(2001)We studied variation in flowering phenology, fruit and seed set, and the abundance of the pollinators of four species of night-blooming Sonoran Desert columnar cacti for up to eight years at one site in Mexico and one ... -
Species-specific defence responses facilitate conspecifics and inhibit heterospecifics in above-belowground herbivore interactions
(2014)Conspecific and heterospecific aboveground and belowground herbivores often occur together in nature and their interactions may determine community structure. Here we show how aboveground adults and belowground larvae of ... -
Timing and Scope of Genomic Expansion within Annelida: Evidence from Homeoboxes in the Genome of the Earthworm Eisenia fetida
(2015)Annelida represents a large and morphologically diverse group of bilaterian organisms. The recently published polychaete and leech genome sequences revealed an equally dynamic range of diversity at the genomic level. The ... -
Timing of Favorable Conditions, Competition and Fertility Interact to Govern Recruitment of Invasive Chinese Tallow Tree in Stressful Environments
(2013)The rate of new exotic recruitment following removal of adult invaders (reinvasion pressure) influences restoration outcomes and costs but is highly variable and poorly understood. We hypothesize that broad variation in ...
