Sanasto (englanti)

The guiding ecological principle that maintains only activities thathave been demonstrated not to damage ecological resources be permitted. Too often, however,activities are permitted until it has been demonstrated that they are harmful.

Aims at expanding a survey result to a continuous map layer showing the probability of occurrence of the target species or habitat in areas outside the actual sampling sites. First, the environmental conditions suitable for the target species or habitat are characterized, i.e. statistical models of species-environment relationships are constructed, and then the distribution of these environments in space is identified by combining the models with maps of the environmental variables in a geographic information system (GIS). The modelling outcome is a continuous probability map that is probabilistic in nature.

See Explanatory variable.

Coast resulting from the ingress of the sea in the limits of sharply dissected sub-aerial processes of land areas.

A distribution that shows all the values that a random variable can take and the likelihood that each will occur.

Probability of a species to occur on a certain place.

Rate of biomass produced by an ecosystem, generally expressed as biomass produced per unit of time per unit of surface or volume. Net primary productivity is defined as the energy fixed by plants minus their respiration.

Period of geologic time extending from the end of Pliocene around 2.6 million years ago until present; collective term for the Holocene and Pleistocene periods.

A species, which is scarce (for various reasons) within a certain territory. This can be related to the specifics of species' geographical distribution (occurrence at range borders), its biology, as well as to the influence of anthropogenic factors.

Data type consisting of rows and columns of cells, with each cell storing a single value. A raster image is based on a grid of data.