Faecal glucocorticoid metabolites and alarm calling in free-living yellow-bellied marmots
Abstract When individuals of a variety of species encounter a potential predator, some, but not all, emit alarm calls. To explain the proximate basis of this variation, we compared faecal glucocorticoid metabolite concentrations in live-trapped yellow-bellied marmots (Marmota flaviventris) between o
The timing of the ant-effect on nymph size and survivorship in an ant-treehopper mutualism
The reservoir cytoskeleton and a possible cytostomal homologue in Colacium (Euglenophyceae)
ABSTRACTThe reservoir cytoskeleton of Colacium Ehrenberg is formed of three bands of microtubules. The microtubules of the dorsal band (DMT) become doublets and are continuous with the longitudinal microtubules of the canal and, therefore, of the pellicle. A band of para‐reservoir microtubules (PMT)
The effects of cattle derived nutrients on growth rates of Arizona Tiger Salamander hatchlings in pastureland
Nitrogen is a critical element in biological systems, with its cycling increasingly influenced by human activities, particularly in agriculture. In Colorado, where 50% of land is used for agriculture, cattle grazing may impact the ecosystems of montane and subalpine ponds inhabited by Ambystoma mavo
Cross-trophic-level dynamics in aquatic ecosystems and their application across ecological contexts
Effects of microclimate, dispersal, species interactions, and environmental stochasticity on demography
Effects of microclimate, dispersal, species interactions, and environmental stochasticity on demography
An empirical study of acoustic source localization
Nectar robbing patterns in Ipomopsis aggregata and Linaria vulgaris
Investigating the role of climate on juvenile Golden-mantled ground squirrel (Callospermophilus lateralis) growth and behavior
Changes to climate can have a variety of consequences on organisms across all taxa. Though we are seeing climate changes across the globe, these effects can often be greater in high-elevation regions. For mammals in these environments, climate change can alter phenology, survival, and reproduction.
Phenological shifts of native and invasive species under climate change: insights from the <i>Boechera Lythrum</i> model
Effects of Interspecific Pollen Transfer (IPT) in a Specialist and a Generalist Flower
Declining Amphibians: A United States' Response to the Global Problem
The effect of food quality and time constraints on caddisfly growth and development
The fitness of the non-feeding adult caddisfly, Asynarchus nigriculus is largely dependent on the accumulation of nutrients during its larval stage. The energy obtained during this time is then allocated into growth and development for the adult insect. This allocation of energy may be constrained b
Elucidating the influence of a nectar yeast and nectar robbing on bumblebee foraging tactic constancy
Animal pollination services are vital for plant reproduction, with approximately 90% of plant species benefitting from this mutualistic relationship. Nectar is one of the most common floral rewards offered by plants in exchange for pollination services. Similarly, nectar is vital for bumbles as they
Carry-over effects of larval food stress on adult energetics and life history in a nectar-feeding butterfly
Marmot mass gain rates relate to their group’s social structure
A statistical estimator for determining the limits of contemporary and historic phenology
Avian Diversity in Aspen and Conifer Forests :
In order to compare avian diversity (species richness and evenness) between aspen and conifer forest communities in Gothic, Colorado, point counts were conducted in three replicates of each habitat type. Additionally, tree density and light measurements were performed as a measure of structural comp