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10.1098/rspb.2015.1003 http://scihub22266oqcxt.onion/10.1098/rspb.2015.1003 C4571692!4571692!26336166     free     free     free Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Proc+Biol+Sci 2015 ; 282 (1814): ä Nephropedia Template TP {{tp|p=26336166|t=2015. Biotic replacement and mass extinction of the Ediacara biota |pdf=|usr=}}{{26336166}} gab.com Text Biotic replacement and mass extinction of the Ediacara biota JO: Proc Biol Sci http://www.kidney.de/pget.php?&tw=1&pmid=26336166 #FOAvip The latest Neoproterozoic extinction of the Ediacara biota has been variously attributed to catastrophic removal by perturbations to global geochemical cycles, ?biotic replacement? by Cambrian-type ecosystem engineers, and a taphonomic artefact. We perform the first critical test of the ?biotic replacement? hypothesis using combined palaeoecological and geochemical data collected from the youngest Ediacaran strata in southern Namibia. We find that, even after accounting for a variety of potential sampling and taphonomic biases, the Ediacaran assemblage preserved at Farm Swartpunt has significantly lower genus richness than older assemblages. Geochemical and sedimentological analyses confirm an oxygenated and non-restricted palaeoenvironment for fossil-bearing sediments, thus suggesting that oxygen stress and/or hypersalinity are unlikely to be responsible for the low diversity of communities preserved at Swartpunt. These combined analyses suggest depauperate communities characterized the latest Ediacaran and provide the first quantitative support for the biotic replacement model for the end of the Ediacara biota. Although more sites (especially those recording different palaeoenvironments) are undoubtedly needed, this study provides the first quantitative palaeoecological evidence to suggest that evolutionary innovation, ecosystem engineering and biological interactions may have ultimately caused the first mass extinction of complex life. Twit Text FOAVip Biotic replacement and mass extinction of the Ediacara biota ????Proc Biol Sci http://www.kidney.de/pget.php?&tw=1&pmid=26336166 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26336166 #FOAvip English Wikipedia <ref>{{Cite pmid|26336166}}</ref> Biotic replacement and mass extinction of the Ediacara biota #MMPMID26336166 Darroch SAF; Sperling EA; Boag TH; Racicot RA; Mason SJ; Morgan AS; Tweedt S; Myrow P; Johnston DT; Erwin DH; Laflamme M Proc Biol Sci 2015[Sep]; 282 (1814): ä PMID26336166show ga The latest Neoproterozoic extinction of the Ediacara biota has been variously attributed to catastrophic removal by perturbations to global geochemical cycles, ?biotic replacement? by Cambrian-type ecosystem engineers, and a taphonomic artefact. We perform the first critical test of the ?biotic replacement? hypothesis using combined palaeoecological and geochemical data collected from the youngest Ediacaran strata in southern Namibia. We find that, even after accounting for a variety of potential sampling and taphonomic biases, the Ediacaran assemblage preserved at Farm Swartpunt has significantly lower genus richness than older assemblages. Geochemical and sedimentological analyses confirm an oxygenated and non-restricted palaeoenvironment for fossil-bearing sediments, thus suggesting that oxygen stress and/or hypersalinity are unlikely to be responsible for the low diversity of communities preserved at Swartpunt. These combined analyses suggest depauperate communities characterized the latest Ediacaran and provide the first quantitative support for the biotic replacement model for the end of the Ediacara biota. Although more sites (especially those recording different palaeoenvironments) are undoubtedly needed, this study provides the first quantitative palaeoecological evidence to suggest that evolutionary innovation, ecosystem engineering and biological interactions may have ultimately caused the first mass extinction of complex life. äBiotic replacement and mass extinction of the Ediacara biota (epmc).pdf DeepDyve Pubget Overpricing