Advanced

Identifying the most surprising victims of mass extinction events : An example using Late Ordovician brachiopods

Finnegan, Seth; Rasmussen, Christian M.Ø. LU and Harper, David A.T. LU (2017) In Biology Letters 13(9).
Abstract

Mass extinction events are recognized by increases in extinction rate and magnitude and, often, by changes in the selectivity of extinction. When considering the selective fingerprint of a particular event, not all taxon extinctions are equally informative: some would be expected even under a ‘background’ selectivity regime, whereas others would not and thus require special explanation. When evaluating possible drivers for the extinction event, the latter group is of particular interest. Here, we introduce a simple method for identifying these most surprising victims of extinction events by training models on background extinction intervals and using these models to make per-taxon assessments of ‘expected’ risk during the extinction... (More)

Mass extinction events are recognized by increases in extinction rate and magnitude and, often, by changes in the selectivity of extinction. When considering the selective fingerprint of a particular event, not all taxon extinctions are equally informative: some would be expected even under a ‘background’ selectivity regime, whereas others would not and thus require special explanation. When evaluating possible drivers for the extinction event, the latter group is of particular interest. Here, we introduce a simple method for identifying these most surprising victims of extinction events by training models on background extinction intervals and using these models to make per-taxon assessments of ‘expected’ risk during the extinction interval. As an example, we examine brachiopod genus extinctions during the Late Ordovician Mass Extinction and show that extinction of genera in the deep-water ‘Foliomena fauna’ was particularly unexpected given preceding Late Ordovician extinction patterns.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Brachiopoda, Extinction risk, Extinction selectivity, Ordovician
in
Biology Letters
volume
13
issue
9
publisher
Royal Society
external identifiers
  • scopus:85030455119
  • wos:000412163700007
ISSN
1744-9561
DOI
10.1098/rsbl.2017.0400
language
English
LU publication?
yes
id
fb36c26a-0295-4091-ad9d-e78f166bf9ae
date added to LUP
2017-10-16 14:13:57
date last changed
2018-01-16 13:23:19
@article{fb36c26a-0295-4091-ad9d-e78f166bf9ae,
  abstract     = {<p>Mass extinction events are recognized by increases in extinction rate and magnitude and, often, by changes in the selectivity of extinction. When considering the selective fingerprint of a particular event, not all taxon extinctions are equally informative: some would be expected even under a ‘background’ selectivity regime, whereas others would not and thus require special explanation. When evaluating possible drivers for the extinction event, the latter group is of particular interest. Here, we introduce a simple method for identifying these most surprising victims of extinction events by training models on background extinction intervals and using these models to make per-taxon assessments of ‘expected’ risk during the extinction interval. As an example, we examine brachiopod genus extinctions during the Late Ordovician Mass Extinction and show that extinction of genera in the deep-water ‘Foliomena fauna’ was particularly unexpected given preceding Late Ordovician extinction patterns.</p>},
  articleno    = {20170400},
  author       = {Finnegan, Seth and Rasmussen, Christian M.Ø. and Harper, David A.T.},
  issn         = {1744-9561},
  keyword      = {Brachiopoda,Extinction risk,Extinction selectivity,Ordovician},
  language     = {eng},
  month        = {09},
  number       = {9},
  publisher    = {Royal Society},
  series       = {Biology Letters},
  title        = {Identifying the most surprising victims of mass extinction events : An example using Late Ordovician brachiopods},
  url          = {http://dx.doi.org/10.1098/rsbl.2017.0400},
  volume       = {13},
  year         = {2017},
}