Concepts

All (598)Explore Concept Graph

598 concepts

methodology

non-destructive sampling

Sampling approaches that are often preferable because they require less effort and allow for repeated sampling

methodological1 paper
methodology

non-invasive sampling

A newly developed non-invasive sampling method of using swabs to collect dermal secretions as a rapid and reliable alternative to sample hormones from amphibian species in the field

methodological1 paper
measurement

nondestructive measurement

Plant size measurements that can be taken without destroying or removing the plant

methodological1 paper
model type

null model

Statistical model that generates random patterns while preserving certain constraints, used as baseline for comparison

methodological1 paper
metric

number closure

methodological1 paper
measurement

nutrient diffusing substrates

Experimental approach using nutrient-enriched substrates to deliver controlled amounts of nutrients to algae in situ

methodological1 paper
measurement

ocular sampling

Visual interpretation method using high-resolution imagery to manually identify and classify land cover features

methodological1 paper
measurement

operational taxonomic units

Term used to represent each morphospecies of culturable fungi in lieu of species name as species has not currently been established by means of sequencing

methodological1 paper
theory

optimal control theory

methodological1 paper
model type

ordinal logistic regression

A regression approach that allows for multiple ordered response categories and provides more specific interpretation of exact probability of socioeconomic characteristics on constraints

methodological1 paper
process

outlier detection

Statistical identification of observations that deviate significantly from expected patterns in meteorological data

methodological1 paper
metric

overlap coefficient

A measure of the degree to which two phenological distributions overlap in time, calculated by integrating the area under both probability density curves

methodological1 paper
framework

paired watershed study

An experimental design using matched watershed pairs to isolate treatment effects while controlling for natural variation

methodological1 paper
measurement

paleomagnetic data

methodological1 paper
phenomenon

pan trap sampling bias

The differential attraction of insects to certain colored traps, potentially leading to non-representative samples of the true community

methodological1 paper
phenomenon

panorama

Large-scale moving or stationary paintings designed to create immersive visual experiences for 19th-century audiences

methodological1 paper
process

parallax correction

Geometric correction for apparent horizontal displacement of cloud location due to satellite viewing angle

methodological1 paper
hypothesis

parallel trends assumption

methodological1 paper
framework

parent-child spatial relationships

methodological1 paper
process

particle orientation

methodological1 paper
framework

passive treatment

Treatment systems designed to operate with minimal human intervention using natural processes and renewable energy

methodological1 paper
process

peer review

The process by which manuscripts are evaluated by expert reviewers before publication

methodological1 paper
process

peer-led inquiry

methodological1 paper
phenomenon

phase contrast

Imaging approach where the detector is placed at a larger distance behind the sample, generating an interference pattern that reflects spatial variation in phase shifts

methodological1 paper
analytical

phase diagram analysis

Method to display cool-season conditions relative to station's period of record using precipitation and snow water equivalent data

methodological1 paper
methodology

phenotypic manipulation

Experimental alterations of traits in factorial combination to allow correlational and other forms of selection to be distinguished from spurious effects on fitness caused by unmeasured characters

methodological1 paper
measurement

pile density

The density of hair (pile) on insect body parts, categorized as low, medium, or high

methodological1 paper
measurement

point intercept method

Vegetation sampling technique using vertical markers to estimate species proportions based on plant contacts

methodological1 paper
framework

polarization diversity

methodological1 paper
measurement

polarization diversity pulse pair

Radar technique using alternating H and V polarized pulses to estimate Doppler velocity while overcoming decorrelation limitations

methodological1 paper
methodology

polynomial thresholding

Dynamic snow identification algorithm using second-order polynomial curves to determine classification thresholds

methodological1 paper
measurement

postural control

An organism's ability to maintain body position and right itself when flipped, used as indicator of thermal stress

methodological1 paper
measurement

predation bioassay

Experimental method using artificial prey to quantify predation rates in natural environments

methodological1 paper
methodological

predator identification

The process of determining which species are responsible for predation events through direct observation or evidence

methodological1 paper
metric

predictive model accuracy

The accuracy of predictive models for estimating plant biomass using cross-validation

methodological1 paper
methodology

presence-absence sampling

Sampling approach that records whether a species or habitat type is present or absent at specific locations

methodological1 paper
measurement

project ownership

methodological1 paper
measurement

proloculus

methodological1 paper
methodological

pseudoreplication

Having more than one sample per individual that may bias results

methodological1 paper
framework

psychophysics

Framework that analyzes perception by measuring changes in behavior with changes in stimulation to understand cognitive processes

methodological1 paper
process

quality assurance and quality control

QA/QC process for time-series data involving identification of problems in data, subsequent data cleaning or processing, including outlier detection, gap filling, and data validation

methodological1 paper
measurement

quantum catch data

methodological1 paper
measurement

quantum dot fluorescent labeling

Use of fluorescent nanocrystals to label individual pollen grains for tracking movement between plants

methodological1 paper
measurement

radial cell length

methodological1 paper
measurement

radioimmunoassay

Laboratory technique using antibody-antigen binding and radioactive tracers to measure hormone concentrations in biological samples

methodological1 paper
process

radiometric calibration

methodological1 paper
methodology

randomized block design

Experimental design that groups experimental units into blocks to control for sources of variation while randomizing treatments within blocks

methodological1 paper
measurement

range height indicator scan

Radar scanning strategy that measures at constant azimuth across varying elevation angles

methodological1 paper
process

rapprochement

Process where LAG becomes more tightly compacted as a result of reduced growth rate, creating difficulty in accurately deducing the number of LAG

methodological1 paper
framework

record linkage

The process of identifying coreferent records both between and within files in the absence of a unique identifiable attribute

methodological1 paper