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Increased habitat segregation at the dawn of the Phanerozoic revealed by correspondence analysis of bioturbation. | LitMetric

AI Article Synopsis

  • * The analysis of trace-fossil records shows that early mobile benthic organisms were adaptable and had low habitat specialization, but later periods indicated increased habitat segregation and specialization among these organisms.
  • * The findings suggest that this shift led to the formation of distinct communities in marine environments and indicated an early development of complex trophic interactions among species.

Article Abstract

The Agronomic Revolution of the early Cambrian refers to the most significant re-structuration of the benthic marine ecosystem in life history. Using a global compilation of trace-fossil records across the Ediacaran-Cambrian transition, this paper investigates the relationship between the benthos and depositional environments prior to, during, and after the Agronomic Revolution to shed light on habitat segregation via correspondence analysis. The results of this analysis characterize Ediacaran mobile benthic bilaterians as facies-crossing and opportunistic, with low levels of habitat specialization. In contrast, the Terreneuvian and Cambrian Series 2 reveal progressive habitat segregation, parallel to matground environmental restriction. This event was conducive to the establishment of distinct endobenthic communities along the marine depositional profile, showing that the increase in styles of animal-substrate interactions was expressed by both alpha and beta ichnodiversity. Habitat segregation at the dawn of the Phanerozoic may illustrate an early extension of the trophic group amensalism at community scale.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10724277PMC
http://dx.doi.org/10.1038/s41598-023-49716-8DOI Listing

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