Põhiliigilisteks

Põhiliigilisteks is an Estonian term that translates to "main species" or "dominant species" in English. It refers to the most abundant, widespread, or ecologically significant species within a particular habitat or ecosystem. The concept of põhiliigilisteks is crucial in ecological studies and conservation efforts, as understanding these dominant species helps in characterizing and managing an ecosystem.

The determination of põhiliigilisteks can vary depending on the criteria used. In terms of biomass, a single plant species might be considered põhiliigilisteks if it constitutes the largest proportion of living matter. In terms of population size, a particular insect or bird species might be identified as põhiliigilisteks. Ecologically, a species that has a profound impact on the structure, function, or composition of the ecosystem, even if not the most numerous, can also be classified as põhiliigilisteks. For example, a keystone species, which has a disproportionately large effect on its environment relative to its abundance, would undoubtedly be considered põhiliigilisteks.

Identifying the põhiliigilisteks of an area is often a foundational step in ecological surveys. Once these species are identified, scientists can focus their research and conservation strategies on them, as their health and stability directly influence the health of the entire ecosystem. Changes in the population or health of põhiliigilisteks can serve as early warning signs of environmental stress or degradation, prompting further investigation and intervention. The term is commonly used in forestry, agriculture, and nature conservation within Estonia.