Concepts

Annual change in cross-sectional area of tree stem measured from tree ring widths

Arthropods collected in bee bowl traps that are not being examined by a study and are not collected or recorded in any data set

Quantitative measurement of presence/absence, frequency, and/or duration of specific behaviors

Comprehensive collection method attempting to document all species present at a site regardless of abundance

Automated identification of species from camera trap photographs using machine learning

Digital representation of forest canopy height derived from remote sensing data

The dominant frequency component of acoustic signals, measured as the highest peak frequency from FFT analysis

Analytical method for detecting hydrogen peroxide concentrations using flow injection system with acridinium ester reagent

Statistical methods for analyzing cyclical data such as flowering dates that occur on an annual cycle

Laboratory procedure using sediment-filled columns with various influent waters to determine contaminant release rates and transport parameters

Cytogenetic technique using fluorescently labeled DNA probes to identify homologous chromosome regions across species

PCA performed on geochemical data transformed to compositional units to remove effects of dilution

Chemical compounds that enhance image contrast by increasing X-ray absorption properties of biological tissues

Early photographic process using silver-plated copper sheets that could create images of absolute likeness

Measurement of radiation damage in a crystal defined as [U] + .235*[Th]

The efficiency with which a surface emits thermal radiation, affecting thermal imaging measurements

A measure of noisiness in alarm calls, quantified using deterministic chaos analysis

A technique that identifies areas within a thin section that have elevated uranium concentrations by placing mica over thin sections and irradiating in a nuclear reactor to create fission tracks viewa...

Method for directly measuring gas flux by monitoring concentration changes in enclosed chambers placed on water surface

Physical oscillations of flowers caused by air movement from pollinator wing beats

Standardized laboratory procedure to quantify the potential for organic matter to form disinfection byproducts under controlled chlorination conditions

The proportion of cells producing stalks within a population, used as a metric for stalk production activity

Statistical analysis of shape variation using landmark coordinates

Acoustic measure indicating the harmonic content and tonal quality of vocalizations

Method to calculate soil gas fluxes using concentration gradients at multiple depths

Measure of vegetation greenness calculated as G/(R+G+B) used as proxy for evapotranspiration

Assessment of food material present in larval digestive system as indicator of feeding success

Spatial resolutions of the order of a few hundred meters, as defined in this work

Radar interferometry technique using phase differences between satellite acquisitions to detect ground surface deformation

Distance measurement used as proxy for body size in bees

Visual contrast between puddling sites and surrounding areas measured using polarized light photography and gray scale analysis

The relationship between applied magnetic field and induced magnetization that reveals magnetic mineralogy and domain states