Data from: Population structure of the oldest known macroscopic communities from Mistaken Point, Newfoundland
The presumed affinities of the Terminal Neoproterozoic Ediacara biota have been much debated. However, even in the absence of concrete evidence for phylogenetic affinity, numerical paleoecological approaches can be effectively used to make inferences about organismal biology, the nature of biotic in...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:84055 2023-07-02T03:33:01+02:00 Data from: Population structure of the oldest known macroscopic communities from Mistaken Point, Newfoundland Darroch, Simon A. F. Laflamme, Marc Clapham, Matthew E. 2013-07-15T20:57:02.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-mt-p2ju https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:84055 unknown doi:10.5061/dryad.3j07n/1 doi:10.1666/12051 http://nbn-resolving.org/urn:nbn:nl:ui:13-mt-p2ju doi:10.5061/dryad.3j07n https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:84055 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2013 ftdans https://doi.org/10.5061/dryad.3j07n/110.1666/1205110.5061/dryad.3j07n 2023-06-13T13:10:04Z The presumed affinities of the Terminal Neoproterozoic Ediacara biota have been much debated. However, even in the absence of concrete evidence for phylogenetic affinity, numerical paleoecological approaches can be effectively used to make inferences about organismal biology, the nature of biotic interactions, and life history. Here, we examine the population structure of three Ediacaran rangeomorph taxa (Fractofusus, Beothukis, and Pectinofrons), and one non-rangeomorph taxon (Thectardis) across five fossil surfaces around the Avalon Peninsula, Newfoundland, through analysis of size-frequency distributions using Bayesian Information Criterion (BIC). Best-supported models resolve communities of all studied Ediacaran taxa at Mistaken Point as single cohorts with wide variance. This result is best explained in terms of a “continuous reproduction” model, whereby Ediacaran organisms reproduce aseasonally, so that multiple size modes are absent from preserved communities. Modern benthic invertebrates (both as a whole and within specific taxonomic groups) in deeper-water settings reproduce both seasonally and aseasonally; distinguishing between biological (i.e., continuous reproductive strategies) and environmental (lack of a seasonal trigger) causes for this pattern is therefore difficult. However, we hypothesize that the observed population structure could reflect the lack of a trigger for reproduction in deepwater settings (i.e., seasonal flux of organic matter), until the explosive appearance of mesozooplankton near the base of the Cambrian. Other/Unknown Material Newfoundland Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Mistaken Point ENVELOPE(-55.774,-55.774,53.478,53.478) |
institution |
Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Darroch, Simon A. F. Laflamme, Marc Clapham, Matthew E. Data from: Population structure of the oldest known macroscopic communities from Mistaken Point, Newfoundland |
topic_facet |
Life sciences medicine and health care |
description |
The presumed affinities of the Terminal Neoproterozoic Ediacara biota have been much debated. However, even in the absence of concrete evidence for phylogenetic affinity, numerical paleoecological approaches can be effectively used to make inferences about organismal biology, the nature of biotic interactions, and life history. Here, we examine the population structure of three Ediacaran rangeomorph taxa (Fractofusus, Beothukis, and Pectinofrons), and one non-rangeomorph taxon (Thectardis) across five fossil surfaces around the Avalon Peninsula, Newfoundland, through analysis of size-frequency distributions using Bayesian Information Criterion (BIC). Best-supported models resolve communities of all studied Ediacaran taxa at Mistaken Point as single cohorts with wide variance. This result is best explained in terms of a “continuous reproduction” model, whereby Ediacaran organisms reproduce aseasonally, so that multiple size modes are absent from preserved communities. Modern benthic invertebrates (both as a whole and within specific taxonomic groups) in deeper-water settings reproduce both seasonally and aseasonally; distinguishing between biological (i.e., continuous reproductive strategies) and environmental (lack of a seasonal trigger) causes for this pattern is therefore difficult. However, we hypothesize that the observed population structure could reflect the lack of a trigger for reproduction in deepwater settings (i.e., seasonal flux of organic matter), until the explosive appearance of mesozooplankton near the base of the Cambrian. |
author |
Darroch, Simon A. F. Laflamme, Marc Clapham, Matthew E. |
author_facet |
Darroch, Simon A. F. Laflamme, Marc Clapham, Matthew E. |
author_sort |
Darroch, Simon A. F. |
title |
Data from: Population structure of the oldest known macroscopic communities from Mistaken Point, Newfoundland |
title_short |
Data from: Population structure of the oldest known macroscopic communities from Mistaken Point, Newfoundland |
title_full |
Data from: Population structure of the oldest known macroscopic communities from Mistaken Point, Newfoundland |
title_fullStr |
Data from: Population structure of the oldest known macroscopic communities from Mistaken Point, Newfoundland |
title_full_unstemmed |
Data from: Population structure of the oldest known macroscopic communities from Mistaken Point, Newfoundland |
title_sort |
data from: population structure of the oldest known macroscopic communities from mistaken point, newfoundland |
publishDate |
2013 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-mt-p2ju https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:84055 |
long_lat |
ENVELOPE(-55.774,-55.774,53.478,53.478) |
geographic |
Mistaken Point |
geographic_facet |
Mistaken Point |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
doi:10.5061/dryad.3j07n/1 doi:10.1666/12051 http://nbn-resolving.org/urn:nbn:nl:ui:13-mt-p2ju doi:10.5061/dryad.3j07n https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:84055 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.3j07n/110.1666/1205110.5061/dryad.3j07n |
_version_ |
1770272785699962880 |