Prior to the 1990s, hypotheses were based primarily on distributions of presumed sister species, disjunctions of species' distributions, fossil distributional data, and paleoenvironmental reconstructions [e.g. 14].
To approximate their ancestral niche, we combined distributional data from these three species into a lumped distribution, which we then compared to H. tanneri in a PCA analysis as above.
Distributional data was obtained by scanning all 550 palm species distribution maps from Henderson et al. [ 33] Field Guide to the palms of the Americas.
The geographic distribution of each of 507 known shark species was extracted using available distributional data and expert knowledge from the scientific literature (from 1878 to present) and compiled in a Global Shark Distribution Database (Supporting Text S1, and Supporting Table S1 and Table S2).
Distributional data for these species was relatively sparse.
The easiest way to contribute distributional data is to become a regular user of eBird.
Dormann, C. F. et al. Methods to account for spatial autocorrelation in the analysis of species distributional data: a review.
However, this view is at odds with species' distributional data and foraminiferal geochemical properties.
By and large, the primary uses of herbarium specimens, such as examining morphology or recording distributional data, are non-destructive.
So, rather than trying to further parse the payroll numbers, let's look, for once, at the distributional data in the report, which shows that a great deal of variation and inequity are persisting, despite the over-all improvement.
To facilitate the analysis of distributional data in a general experimental setting, we introduce a computational framework to efficiently characterize the sensitivity of distributional output to changes in external stimuli.
