Subdominant

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subdominant

[¦səb′däm·ə·nənt]
(ecology)
A species which may appear more abundant at particular times of the year than the true dominant in a climax; for example, in a savannah trees and shrubs are more conspicuous than the grasses, which are the true dominants.

Subdominant

 

in music, one of the three harmonic functions; also, the chord situated a fifth below the tonic and indicated by S. The basis of the subdominant chord is the fourth degree of a scale, which is itself called the subdominant. Chords based on the second and sixth degrees also have subdominant functions. The subdominant gravitates more to the tonic than does the dominant because it contains the tonic’s basic tone. The alternation of subdominants and dominants most clearly defines a scale’s gravitation. The tonality of a tonic’s subdominant is called the subdominant key.

References in periodicals archive ?
In the canopy layer, negracuba, chicharron (Pseudocarpidium avicennioides), Pictetia mucronata and yuraguana (Coccothrinax gundlachii) they are subdominants, with high abundance--coverage.
Tanytarsus ligulatus and Goeldichiromus maculatus species, respectively, dominant and subdominant in the habitats, they have adaptations to a multiplicity of environments, mainly during the dry season.
On the other hand, Phlox hoodii was a subdominant on some slopes in the Aishihik-Sekulmun area, but was not reported from other Yukon grasslands; it is an important plant in dry grasslands in the northern Great Plains.
Subdominant species at the site include: Aesculus glabra, Celtis occidentalis, Fraxinus americana, Prunus serotina, Quercus rubra, and Ulmus rubra.
Numerous woody species, both dominant and subdominant, are deciduous, with leaf fall occurring during the dry season.
Based on differences among relative importance of codominants or subdominants.
For subdominants like Zizia aurea, temporary suppression of any dominants - of whatever phenology - may favor germination or growth of seedlings or repressed plants.
Alternatively, males that established territories in flooded habitat may have excluded subdominant males from preferred nesting sites through territorial behavior.
The crustacean zooplankton community has generally been dominated by the cladoceran Daphnia rosen and the calanoid copepod Diaptomus novamexicanus, with Bosmina longirostris and Holopedium gibberum occurring as subdominants (Janik 1988, Elser 1992).
For example, to test the hypothesis that Be and Hm were predicted to be late-successional dominants because they had distinctive mortality submodels, we showed that any species receiving the mortality submodel of either Be or Hm became a late successional dominant, and that Be and Hm did not become late-successional subdominants if they received any other species' mortality submodel (see Results).
Only two grasses were present in these clearings (small crabgrass, Digitaria ischaemum, and spreading witchgrass, Panicum dichotomiflorum) and both were subdominants.