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Biodiversity refers to the variability of life and is commonly described using multiple levels: genetic, species, ecosystem, and phylogenetic diversity.
Biodiversity is the variability of life on Earth. Biologists commonly define it as the totality of genes, species, and ecosystems of a region, and it can be understood through multiple levels of biological variety. These levels include genetic variability (differences in genes and molecules), species diversity (variety and relative abundance of species), ecosystem diversity (variety of habitats and ecological systems), and phylogenetic diversity (how evolutionary lineages are represented). Biodiversity is also linked to functional diversity, which reflects how many functionally different species exist within a population (e.g., differences in feeding, movement, and predator–prey roles).
Biodiversity refers to the variability of life and is commonly described using multiple levels: genetic, species, ecosystem, and phylogenetic diversity.
There is no single fixed definition of biodiversity, but major scientific and institutional definitions emphasize variability among living organisms and the ecosystems they form part of.
Differences in genes (and related molecular traits) among individuals and populations.
The variety of species in an area, considering both how many species there are and how evenly individuals are distributed among them.
The variety of habitats, ecosystems, and ecological systems across a region.
The diversity of evolutionary lineages represented among organisms in a community or region.
A measure of how many functionally different species occur in a population, based on differences in roles such as feeding and mobility.
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