Concepts

The most recent period in Earth's history (~116-130 ka) when temperatures were persistently warmer than today, specifically the Eemian period at 125 ka

Environmental gradient of light availability from open sun through intermediate shade to deep shade habitats

The proportion of male versus female offspring in a litter affecting prenatal hormone exposure

Pattern where male mammals tend to travel farther than females in exploratory excursions and disperse more than females

Environmental contamination by heavy metals from mining activities affecting freshwater ecosystems

DNA sequences that can move or be transferred between different positions within genomes or between genomes

Chemical compounds overproduced by queens compared to workers that potentially regulate worker reproduction

Precisely-timed seasonal cycles of reproduction fundamental to animal populations adapting to northern and montane environments

Sodium being a limiting nutrient in natural systems, affecting organism behavior and ecosystem interactions

The tendency of foragers to maintain a consistent foraging strategy across multiple floral visits rather than switching between different tactics

Mortality from roadkill events where animals are struck and killed by vehicles

The biogeographic transition zone between subalpine forest and alpine tundra, representing the elevational limit of individual trees with an upright growth form

When organisms switch from their primary food to secondary food sources under conditions of high competition or resource limitation

Properties of materials that inhibit microbial growth and decomposition

Physical structure and arrangement of beaver ponds, specifically comparing single isolated ponds versus terraced series of connected ponds

Projected increase in high-latitude forest growth due to warming temperatures

Chemical signals that organisms use to obtain information about their environment

Mountainous regions with significant topographic variability that influences weather and climate processes

When prior infection by one natural enemy affects the plant's resistance or susceptibility to attack by a different natural enemy

Daily patterns in organism behavior, with some mayfly species showing increased drift activity at night to minimize exposure to visual predators

Differential prey use based on habitat type, with fairy shrimp comprising majority of diet in temporary ponds

Subsurface conditions where chemical transport is limited to diffusion rather than advection, creating oxygen-depleted anoxic conditions

Decrease in compositional similarity between communities with increasing geographic distance or environmental separation

A habitat not well suited for survival and reproduction that animals are attracted to for foraging if the threat of vehicles is not recognized

Differential responses of organisms to different stereoisomeric forms of the same chemical compound

Degree of environmental stress affecting survival and reproduction, differing between elevational sites

Linear scratches and grooves carved into bedrock by glacial ice movement

Social organization where individuals aggregate in groups, potentially providing antipredator benefits through collective vigilance and dilution effects

Blood parasites including Haematazoa subclass with four main genera: Leucocytozoon, Haemoproteus, Plasmodium, and Trypanosoma, vectored by dipterans

Environmental contamination by toxic metals such as lead, arsenic, nickel, zinc, and cadmium from mining operations

Specialization of left and right brain hemispheres to carry out specific activities, with right hemisphere processing threats and left hemisphere processing conspecifics