ecological niche

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ecological niche

  1. the physical space occupied by an organism.
  2. the organism's functional role in the community (e.g. TROPHIC LEVEL).
  3. other conditions of the organism's existence, such as preferred temperature, moisture and pH, combining spatial habitat with functional interaction with other species.


emanating from or pertaining to ecology.

ecological biome
see biome.
ecological climax
the state of balance in an ecosystem when its inhabitants have established their permanent relationships with each other.
ecological fallacy
bias following misinterpretation that ecological factors affect all individuals equally.
ecological imbalance
the naturally occurring changes in the environment, e.g. bushfires, floods, volcanic fallout, which leave it unbalanced with respect to the type and quality of the feed they provide.
ecological interface
the border between two ecosystems.
ecological mosaic
a pattern of interspersed ecosystems.
ecological niche
1. the position occupied by an organism in relation to other organisms and to the environment.
2. a particular part of an ecological environment in which a particular plant or animal species prospers. It is the set of terms, in relation to food and water supply and relationship with predators and disease and with competitors, by which the organism achieves its full biological potential.


a small recess, depression or indentation, especially a recess in the wall of a hollow organ that tends to retain contrast media, as revealed by radiography.

ecological niche
the geographical location in the physical environment which the particular organism occupies best, in which it thrives best. The boundaries are determined by the suitability of the climate and the feed provided and competition with predators and collaboration with synergists.
niche pericarditis
an abattoir finding in normal cattle; small red velvety patches on the outside of the great vessels.
References in periodicals archive ?
This leads to the development of different realized niches for each species.
The statistics produced by the general transfer functions also are suitable for estimating the breadth of a [TABULAR DATA FOR TABLE 12 OMITTED] population's realized niche.
To us, the values in Table 13 represent a reasonable estimate of the realized niche for populations of ssp.
Our results thus suggest that environmental selection establishes a broad fundamental niche from which density-dependent selection, self thinning, and competitive exclusion carve out a realized niche spanning only [approximately]2.
Again, partitioning the environmental space into the different realized niches depends on the consumption vectors much more than on the ZNGIs.
The significance of Petraitis' (1989) result described above is that it shows that this approach is most relevant to the consumption ratios of species, and that despite a superficial similarity to Hutchinson's description of realized niches described above, it is not necessarily closely related to minimum food requirements.