Data from: Shaping the latitudinal diversity gradient: New perspectives from a synthesis of paleobiology and biogeography ...

• Main Authors: Jablonski, David, Huang, Shan, Roy, Kaustuv, Valentine, James W.
• Format: Dataset
• Language: English
• Published: Dryad 2016
• Subjects: gradient diversity; Antarctic; Arctic; Antarc*
• Online Access: https://dx.doi.org/10.5061/dryad.qd53c; https://datadryad.org/stash/dataset/doi:10.5061/dryad.qd53c

An impediment to understanding the origin and dynamics of the latitudinal diversity gradient (LDG) -- the most pervasive large-scale biotic pattern on Earth -- has been the tendency to focus narrowly on a single causal factor, when a more synthetic, integrative approach is needed. Using marine bivalves as a model system, and drawing on other systems where possible, we review paleobiologic and biogeographic support for two supposedly opposing views, that the LDG is shaped primarily by (a) local environmental factors that determine the number of species and higher taxa at a given latitude (in-situ hypotheses), or (b) the entry of lineages arising elsewhere into a focal region (spatial-dynamics hypotheses). Support for (a) includes the fit of present-day diversity trends in many clades to environmental factors such as temperature, and the correlation of extinction intensities in Pliocene bivalve faunas with net regional temperature changes. Support for (b) includes the age-frequency distribution of bivalve ... : JablonskiEtAlShapingLatDivGradientSupplTables1&2Table 1 - Geologic ages of extant marine bivalves, Arctic, Tropical, and Antarctic faunas, with supporting references; Table 2 - extant marine bivalve species in SE Japan and SE Australia, with supporting references ...