Concepts

All (599)Explore Concept Graph

599 concepts

framework

social network analysis

A method used to quantify social relationships that not only quantifies the direct relationship between a focal individual and its social partners, but also describes the position of the focal individ...

methodological42 papers
framework

reciprocal transplant experiment

Experimental approach where organisms from different source populations are grown in different environments to test for local adaptation

methodological31 papers
methodology

mark-recapture

Method for estimating demographic parameters by marking individuals and tracking recapture histories over time

methodological26 papers
metric

NDVI

Normalized Difference Vegetation Index, derived from satellite imagery to estimate vegetation greenness and photosynthetic activity

methodological25 papers
measurement

spectral reflectance

Light absorption and reflection properties of tissues that vary with chemical composition and structure

methodological25 papers
measurement

canopy surface area

methodological18 papers
metric

centrality measures

Network statistics that quantify the importance or influence of individuals within social networks, including degree, closeness, betweenness, and eigenvector centrality

methodological16 papers
metric

forecast skill

The accuracy of predicted values using root mean square error to assess model performance

methodological16 papers
methodological

acoustic playback experiment

Experimental technique using recorded sounds played back to animals to test behavioral or physiological responses to acoustic stimuli

methodological15 papers
measurement

correlation coefficient

methodological15 papers
framework

dendroecological reconstruction

Method of reconstructing past forest conditions using tree-ring data to determine establishment dates and estimate historical stand structure

methodological15 papers
model type

structural equation modeling

Statistical approach allowing estimation of directional relationships among variables and comparison of direct versus indirect effects

methodological15 papers
measurement

spatial autocorrelation

The degree to which values at nearby locations are correlated, used to assess spatial clustering in disease patterns

methodological13 papers
methodology

meta-analysis

Quantitative synthesis of results from multiple independent studies to identify general patterns

methodological12 papers
methodology

focal animal sampling

Behavioral observation method where a single individual is observed continuously for a fixed time period

methodological10 papers
measurement

phylogenetically independent contrasts

A method to test for phylogenetic signal by comparing empirical data variance to variance from randomly reshuffled species identities across trait data sets

methodological10 papers
measurement

camera trapping

Non-invasive wildlife monitoring technique using motion-triggered cameras to detect and photograph animals

methodological9 papers
metric

coefficient of variation

Statistical measure of variation used to quantify family-guild variation and compare across different taxonomic groups

methodological9 papers
metric

complexity

methodological9 papers
measurement

imaging spectroscopy

High fidelity remote sensing data collection using hyperspectral sensors to capture contiguous spectral bands for vegetation and surface characterization

methodological9 papers
methodology

open-top chambers

Transparent chambers commonly used in climate change experiments to raise air and soil temperature in remote areas by creating a passive warming effect

methodological9 papers
framework

model performance evaluation

Statistical assessment of how well model outputs match observational data using metrics like correlation and efficiency measures

methodological8 papers
framework

network representation

methodological8 papers
measurement

resting metabolic rate

The rate of energy expenditure for basic physiological maintenance processes, measured as CO₂ emission rate.

methodological8 papers
metric

root weight fraction

The ratio of dry root weight to total dry plant weight, used as an indicator of soil nutrient availability with higher values indicating nutrient-poor conditions

methodological8 papers
measurement

thermal imaging

Use of infrared technology to measure surface temperatures of objects

methodological8 papers
metric

uncertainty estimation

methodological8 papers
metric

Akaike Information Criterion

A model selection criterion that balances goodness of fit with model complexity by penalizing models with more parameters

methodological7 papers
measurement

acoustic localization

Method to determine the spatial origin of sound sources using arrays of microphones and signal processing techniques

methodological7 papers
process

data synthesis

methodological7 papers
framework

ensemble learning

Machine learning approach that combines multiple algorithms to improve predictive performance and robustness

methodological7 papers
methodology

genome-wide association study

Statistical approach to identify genetic variants associated with traits by scanning the entire genome

methodological7 papers
metric

intraclass correlation coefficient

Statistical measure of repeatability that tests individual consistency of a continuous variable by comparing within-subject and between-subject variation

methodological7 papers
measurement

percent cover

The percentage of ground area covered by a particular plant species when viewed from above

methodological7 papers
metric

Relative Euclidean Distance

methodological6 papers
measurement

connectedness

methodological6 papers
measurement

electrical conductivity

Soil electrical conductivity measured via electrical resistivity tomography to estimate soil moisture and subsurface properties

methodological6 papers
measurement

ground-penetrating radar

Geophysical method using electromagnetic waves to measure subsurface properties including snow density through travel-time analysis

methodological6 papers
measurement

spatial gradients

methodological6 papers
measurement

viewing azimuth angle

methodological6 papers
metric

R2

methodological5 papers
measurement

chromatic contrast

Color-based visual contrast as perceived by animal visual systems

methodological5 papers
measurement

chronological age

methodological5 papers
measurement

collection efficiency

methodological5 papers
methodology

downscaling approach

methodological5 papers
metric

feature importance

Measure of the relative contribution of each predictor variable obtained by calculating mean decrease in mean square error

methodological5 papers
measurement

individual-based rarefaction

Statistical method to compare species richness across samples by generating accumulation curves based on individual encounters

methodological5 papers
model type

linear mixed effects model

Statistical model accounting for both fixed and random effects to analyze hierarchical or repeated measures data

methodological5 papers
framework

maximum entropy inference

Statistical inference procedure that selects flattest probability distributions compatible with constraints imposed by prior knowledge

methodological5 papers
measurement

phenomenon time

methodological5 papers