Lab 4: Ecological Sampling Techniques

A collection of essential terms and definitions related to ecological sampling techniques, focusing on methods, data analysis, and statistical concepts necessary for understanding and executing the lab.

Sampling Techniques

Methods used to select and analyze a subset from a larger population.

Quadrat Sampling

A sampling method that involves dividing an area into smaller squares (quadrats) to collect data.

Plot-less Sampling

A method that selects individuals for measurement based on a preset criterion, often using visual estimation.

Random Number Table

A table of numbers where each number has an equal chance of being selected; used for random sampling.

Confidence Interval (CI)

A range of values that is likely to contain the true population mean, calculated from sample data.

Mean tree circumference

The average circumference of trees in a sample, an important metric in ecological studies.

Confidence Limits (CL)

The upper and lower bounds of a confidence interval, indicating the precision of the sample mean.

Standard Deviation (σ)

A measure of the amount of variation or dispersion of a set of values.

H0 (Null Hypothesis)

The hypothesis that there is no effect or difference in a statistical test, used as a baseline.

(α) Significance Level

The probability of rejecting the null hypothesis when it is true, often set at 0.05 for a 95% CI.