Evidence map›Paper›PMID 31598294›Full record

ArticleRoyal Society open science2019

Increase in metazoan ecosystem engineering prior to the Ediacaran-Cambrian boundary in the Nama Group, Namibia.

Alison T Cribb, Charlotte G Kenchington, Bryce Koester, Brandt M Gibson, Thomas H Boag, Rachel A Racicot, Helke Mocke, Marc Laflamme, Simon A F Darroch

Abstract read
In one paragraph

Article in Royal Society open science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

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  11. Environmental drivers of the first major animal extinction across the Ediacaran White Sea-Nama transition.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Alison T CribbEarth and Environmental Science, Vanderbilt University, Nashville, TN 37235-1805, USA.ORCID 0000-0002-8604-6100
Charlotte G KenchingtonEarth Sciences, University of Cambridge, Cambridge CB2 3EQ, UK.ORCID 0000-0002-8201-8786
Bryce KoesterEarth and Environmental Science, Vanderbilt University, Nashville, TN 37235-1805, USA.
Brandt M GibsonEarth and Environmental Science, Vanderbilt University, Nashville, TN 37235-1805, USA.ORCID 0000-0001-9620-0063
Thomas H BoagGeological Sciences, Stanford University, Stanford, CA 94304, USA.
Rachel A RacicotEarth and Environmental Science, Vanderbilt University, Nashville, TN 37235-1805, USA.
Helke MockeGeological Survey of Namibia, Ministry of Mines and Energy, Windhoek, Namibia.
Marc LaflammeChemical and Physical Sciences, University of Toronto Mississauga, Mississauga, Ontario, Canada L5L 1C6.
Simon A F DarrochEarth and Environmental Science, Vanderbilt University, Nashville, TN 37235-1805, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The disappearance of the soft-bodied Ediacara biota at the Ediacaran-Cambrian boundary potentially represents the earliest mass extinction of complex life, although the precise driver(s) of this extinction remain unresolved. The 'biotic replacement' model proposes that an evolutionary radiation of metazoan ecosystem engineers in the latest Ediacaran profoundly altered marine palaeoenvironments, resulting in the extinction of Ediacara biota and setting the stage for the subsequent Cambrian Explosion. However, metazoan ecosystem engineering across the Ediacaran-Cambrian transition has yet to be quantified. Here, we test this key tenet of the biotic replacement model by characterizing the intensity of metazoan bioturbation and ecosystem engineering in trace fossil assemblages throughout the latest Ediacaran Nama Group in southern Namibia. The results illustrate a dramatic increase in both bioturbation and ecosystem engineering intensity in the latest Ediacaran, prior to the Cambrian boundary. Moreover, our analyses demonstrate that the highest-impact ecosystem engineering behaviours were present well before the onset of the Cambrian. These data provide the first support for a fundamental prediction of the biotic replacement model, and evidence for a direct link between the early evolution of ecosystem engineering and the extinction of the Ediacara biota.

Indexed as

Cambrianecosystem engineeringEdiacaranextinctiontrace fossil

Identifiers

PMID31598294
PMCPMC6774933

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.