Each request is evaluated based on the distinctiveness of the find and rarity of the species.
Takacs (1996; p. 61) cites early proposals of this kind for a "calculus" of biodiversity, and objects to the resulting "intricate" calculations to prioritize species based on taxonomic distinctiveness.
Populations were chosen based on their geographical distinctiveness and accessibility.
The present study, however, used simple pop-out search displays in which the target was easily detectable based on high physical distinctiveness, without a need for deeper focal-attentional stimulus analysis.
Subspecies status is appropriate here based on geographic and morphological distinctiveness [ 33].
This result, in line with previous observations [ 11], confirms the perceptual meaningfulness of our definition of distance-to-mean; it also provides an objective acoustical characterization of voice distinctiveness based on simple acoustical measures.
A coalescent test of taxonomic distinctiveness based on chance occurrence of reciprocal monophyly in two lineages was verified in known sister species, and used to identify recently separated lineages that represent putative species.
They presented eight categories to discern population distinctiveness based on genetic and ecological exchangeability sensu [ 24], and proposed that dichotomous use of the term ESU be abandoned in favor of a more holistic approach [ 6].
Initially, populations are quantitatively ranked based on molecular and morphological distinctiveness and selected for conservation priority based on these ranks subject to the limitation that there must be at least one population from each ecotype (six in the case of rainbow trout) or major drainage system (eight in the case of BC – see Taylor 2004).
The present study based on molecular data confirms the distinctiveness of Stathmonotus, but the BI analysis supports its relationship as the sister group of the Paraclinini.
