ecosystems

Unbiased ecosystem surveys give information that is needed to manage the terrain, water, habitat, vegetation and animal life that together form an ecosystem. Quantitative analysis of these data gives understanding of the ecosystem’s dynamics. This, in turn, enables objective forecasts of ecosystem changes.

Ecosystem surveys tell us:

• how large is the aggregate area

• how the fragments are distributed

• what habitat/vegetation/animal quantities exist

• how healthy is the system

• how resource component parts are changing

• simple and stratified random

• selective and systematic

• horizontal point sampling

• ratio and regression estimates

• two phase sampling

• multi-stage sampling

• line intersect and 3P sampling

• quadrat sampling

• line transect sampling

• capture and recapture sampling

• direct sampling

• inverse sampling

Vegetation &

Forest

Fish &

Wildlife

• analysis of variance/covariance

• linear/non-linear regression

• principal components

• cluster analysis

• discriminant analysis

• non-parametric tests

• geostatistics

• population dynamics

Ecosystem Surveys

Sampling Methods

Analytical Methods

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