Concepts

All (598)Explore Concept Graph

598 concepts

measurement

gas chromatography-mass spectrometry

Analytical technique combining gas chromatography separation with mass spectrometry identification for analyzing volatile compounds

methodological3 papers
measurement

herbarium collections

Preserved plant specimens that are picked in the field, pressed flat, dried and attached to archival-grade paper with relevant information recorded, then stored in climate-controlled cabinets

methodological3 papers
methodology

individual tree detection

Automated algorithms for identifying and delineating individual trees from LiDAR point cloud data

methodological3 papers
model type

individual-based model

Computational model that simulates individual organisms and their life histories to understand population-level patterns

methodological3 papers
process

lethal sampling

Sampling methods that result in the death of collected organisms, potentially affecting population abundance and community structure

methodological3 papers
metric

limits of detection

methodological3 papers
measurement

magnetic properties

methodological3 papers
framework

maximum likelihood estimation

Statistical method that estimates parameters by maximizing the likelihood function of observed data

methodological3 papers
measurement

mean Doppler velocity

methodological3 papers
methodological

multicollinearity

Statistical phenomenon where predictor variables are correlated, potentially masking individual effects in regression analysis

methodological3 papers
methodological

multiscale measurements

Measurements spanning multiple spatial and temporal scales within a watershed

methodological3 papers
methodological

partial least squares regression

Statistical modeling approach using spectral reflectance measurements to extrapolate functional trait values

methodological3 papers
measurement

posterior predictive distribution

methodological3 papers
model type

principal component analysis

Statistical method used to identify the structuring factors driving life-history variation and to detect slow-fast continuum patterns

methodological3 papers
metric

sampling efficiency

Measure of how effectively a sampling method captures target organisms relative to processing time and effort

methodological3 papers
framework

scaling relationships

methodological3 papers
process

sensor integration

methodological3 papers
measurement

sensor network

Distributed network of environmental sensors measuring diverse phenomena across watershed for understanding and predicting watershed behavior

methodological3 papers
measurement

skew

methodological3 papers
methodology

sliding-window analysis

Statistical approach that tests all possible combinations of climate drivers and temporal windows to identify optimal predictive time scales

methodological3 papers
measurement

spectral width

methodological3 papers
measurement

spectrogram correlation

Quantitative measure of acoustic similarity between sounds, ranging from 0 to 1.0 with higher correlations indicating more similar sounds

methodological3 papers
measurement

standardized effect size

A metric that compares observed values to null model expectations, calculated as (observed - expected) / standard deviation of null distribution

methodological3 papers
metric

sustainability

methodological3 papers
process

temporal synthesis

Integration of time-series data across different temporal resolutions and scales

methodological3 papers
measurement

trait covariance

methodological3 papers
framework

visual modeling

Computational approach to predict how visual signals are perceived by animal visual systems

methodological3 papers
metric

Accuracy

methodological2 papers
metric

Bateman's index

Constancy index that distinguishes between complete constancy, random transitions, and complete inconstancy

methodological2 papers
framework

Bayesian retrieval

Statistical approach using prior information and measurement uncertainties to optimally estimate atmospheric properties

methodological2 papers
framework

COVID-19 field research protocols

Safety procedures including isolation, testing, and capacity restrictions to enable field research during pandemic

methodological2 papers
metric

F-score

Harmonic mean of precision and recall used to evaluate classification model performance

methodological2 papers
measurement

Intrinsic Value

methodological2 papers
measurement

Julian day

Day of year from 1-365 used to measure timing of biological events

methodological2 papers
model type

Long Short-Term Memory

Type of recurrent neural network capable of learning temporal dependencies in sequential data through gated memory cells

methodological2 papers
process

STEM retention

Keeping students engaged and continuing in Science, Technology, Engineering, and Mathematics fields

methodological2 papers
measurement

XANES fitting

X-ray Absorption Near Edge Structure spectroscopy fitting method using reference compound spectra to identify chemical species

methodological2 papers
measurement

age-detrended growth

Growth measurements adjusted to remove the effect of age-dependent growth patterns, allowing isolation of environmental factors on growth

methodological2 papers
measurement

among-individual correlation

Correlation between behavioral traits at the individual level, estimated while controlling for within-individual variation and environmental effects

methodological2 papers
measurement

ash-free dry mass

Standard measure of organic biomass determined by ashing samples to remove inorganic material

methodological2 papers
framework

avian tetrachromatic color space

Mathematical representation of color perception in birds based on stimulation of four cone types (UV/violet-sensitive, short-wave-sensitive, medium-wave-sensitive, long-wave-sensitive)

methodological2 papers
model type

biophysical models

Tools implemented to accurately predict an organism's physiological response to attributes of interest such as water loss and body temperature

methodological2 papers
measurement

closure temperature

Temperature below which a thermochronological system retains daughter products, ~70°C for apatite He system

methodological2 papers
methodology

clustering approach

methodological2 papers
measurement

coercivity spectra

methodological2 papers
framework

collaborative sensing

Approach where multiple distributed sensors work together to achieve better performance than individual sensors

methodological2 papers
measurement

computational skills

methodological2 papers
metric

confidence intervals

methodological2 papers
framework

covariance reaction norm

Statistical model allowing phenotypic correlations between traits to vary continuously with environmental predictors

methodological2 papers
framework

data archiving

The practice of making research data publicly available for verification and reuse

methodological2 papers