benthic ecosystems; diversity; Permian; mass extinction; Triassic
Hofmann Richard, Hautmann Michael, Bucher Hugo (2016), Diversity partitioning in Permian and Early Triassic benthic ecosystems of the Western USA: a comparison, in Historical Biology
, 29(7), 918-930.
Hautmann Michael, Bagherpour Borhan, Brosse Morgane, Frisk Asa, Hofmann Richard, Baud Aymon, Nuetzel Alexander, Goudemand Nicolas, Bucher Hugo (2015), Competition in slow motion: the unusual case of benthic marine communities in the wake of the end-Permian mass extinction, in PALAEONTOLOGY
, 58(5), 871-901.
In spite of intense scientific interest in the greatest faunal turnover in Earth’s history, several important aspects of the end-Permian mass extinction are still poorly examined. This includes palaeocommunity analysis of pre-extinction faunas as a baseline for interpreting effects of the extinction event, the analysis of how diversity loss affected different hierarchical levels of biodiversity (alpha-, beta-, and gamma-diversity), and the question how life re-diversified at these different levels. Answering these questions will not only add to the knowledge about a pivotal event in the history of life but also contribute to a more general debate on the controls of biodiversification in deep time. More specifically, different prevalence of competition, predation, positive feedbacks of biotic interactions, and environmental constrains is expected to result in different pathways of diversity partitioning during faunal turnovers. Based on quantitative sampling in the field, the herein proposed project seeks to reconstruct pre-extinction palaeoecology of benthic marine level-bottom communities and to analyse trends in diversity partitioning during the Palaeozoic-Mesozoic transition. The new data will serve as the basis for a detailed discussion about the role of biotic and abiotic factors during the transition from the Palaeozoic to the modern life in the sea.