Rarity within taxonomic lineages and the use of taxa above the level of species

Edwards, Will (1998) Rarity within taxonomic lineages and the use of taxa above the level of species. Ecography, 21 (6). pp. 625-629.

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Studies which attempt to explain rarity within lineages are becoming increasingly popular. An ability to explain causative factors for rarity based on shared characteristics is an intuitively attractive concept, since it may greatly reduce the number of studies needed to understand rarity in all species. Most studies have used the taxonomic unit of family as the level at which patterns in the distribution of rarity are examined, though no justification for the use of family has been provided. To date, no evidence has been produced to show that family-based patterns represent patterns at lower taxonomic levels.

To test whether family-based levels of rarity reliably reflected generic levels, I compared the incidence of rarity within 114 genera from 47 families. 113 genera ( > 99%) within 46 families showed no difference from family means in the proportion of rare species they contained, indicating that the incidence of rarity is consistent between the taxonomic levels of family and genus. This result suggests family level patterns reflect pattern at lower taxonomic levels and supports the use of family as an appropriate level to investigate patterns in the distribution of rarity within a flora

Item ID: 71169
Item Type: Article (Research - C1)
ISSN: 1600-0587
Keywords: rarity, taxonomy, plants
Date Deposited: 05 Jan 2022 05:15
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310308 Terrestrial ecology @ 50%
31 BIOLOGICAL SCIENCES > 3104 Evolutionary biology > 310402 Biogeography and phylogeography @ 50%
SEO Codes: 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280102 Expanding knowledge in the biological sciences @ 100%
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