The impact of global warming and anoxia on marine benthic community dynamics: an example from the Toarcian (Early Jurassic).

ABSTRACT: The Pliensbachian-Toarcian (Early Jurassic) fossil record is an archive of natural data of benthic community response to global warming and marine long-term hypoxia and anoxia. In the early Toarcian mean temperatures increased by the same order of magnitude as that predicted for the near future; laminated, organic-rich, black shales were deposited in many shallow water epicontinental basins; and a biotic crisis occurred in the marine realm, with the extinction of approximately 5% of families and 26% of genera. High-resolution quantitative abundance data of benthic invertebrates were collected from the Cleveland Basin (North Yorkshire, UK), and analysed with multivariate statistical methods to detect how the fauna responded to environmental changes during the early Toarcian. Twelve biofacie

SUBMITTER: Danise S 

PROVIDER: S-EPMC3572952 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature