BioScience Dictionary

 
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Found Dominance 5 times.

Displaying results 1 to 10.

1. Dominance
Refers to the spatial extent of a species ; commonly the most abundant species in each vegetation stratum that, when ranked in descending order of abundance and cumulatively totaled, immediately exceeds 50 percent of the total dominance measure (e.g., areal cover or basal area) for the stratum, plus any additional species comprising 20 percent or more of the total dominance measure for the stratum.

2. Dominance hierarchy
A social structure among a group of animals in which one is dominant and the others have subordinate nonbreeding positions.

3. Dominance measure
The means or method by which dominance is established, including areal coverage and basal area ; the total dominance measure is the sum total of the dominance measure values for all species comprising a given stratum.

4. Dominance threshold number
The number at which 50 percent of the total dominance measure for a given stratum is represented by one or more plant species when ranked in descending order of abundance (i.e., from most to least abundant); when this number is immediately exceeded, the dominant species for the stratum are realized.

5. Dominance
The property of one of a pair of alleles that suppresses the expression of the other member of the pair in heterozygotes .

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