Habitat
Habitat is the place or type of site where an organism or population naturally occurs, including the physical and biological conditions it needs to live, feed, shelter, and reproduce. A habitat is defined relative to particular organisms and scale; it may occur within, span, or cut across ecosystems and can change over time.
In simple terms
An Ecosystem can contain multiple habitats. Habitat can be described broadly, such as a wetland used by migratory birds, or narrowly, such as a nesting substrate with particular moisture and vegetation. Suitability depends on resources, environmental conditions, connectivity, disturbance, predators, competitors, and the species' life stage or season. The same place can be suitable for one species and unsuitable for another. Legal instruments may also define listed natural habitat types for conservation purposes, which is a related but instrument-specific use of the word.
Why it matters
Habitat loss, fragmentation, degradation, and altered connectivity are major pressures on populations and Species diversity. Mapping only land-cover categories may miss whether organisms can complete their life cycles. Decisions should identify the focal species or community, spatial and seasonal needs, condition, connections, pressures, and the definition required by applicable conservation law.
Example
A road assessment does not treat the surrounding forest as one uniform habitat. Surveys identify breeding pools, feeding areas, dry-season refuges, and movement corridors used by a focal amphibian. The route is changed to avoid critical sites, and crossing structures and long-term monitoring address remaining fragmentation risk.
How it differs
Ecosystem
An ecosystem is a dynamic complex of organisms and their non-living environment interacting as a functional unit, while habitat is the place and conditions used by a particular organism or population.