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dc.contributor.author
Serra, Fernanda
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dc.contributor.author
Balseiro, Diego
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dc.contributor.author
Waisfeld, Beatriz Graciela
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dc.date.available
2024-02-07T15:31:10Z
dc.date.issued
2023-02
dc.identifier.citation
Serra, Fernanda; Balseiro, Diego; Waisfeld, Beatriz Graciela; Morphospace trends underlying a global turnover: ecological dynamics of trilobite assemblages at the onset of the Ordovician Radiation ; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 615; 2-2023; 1-13
dc.identifier.issn
0031-0182
dc.identifier.uri
http://hdl.handle.net/11336/226189
dc.description.abstract
The early Palaeozoic was an interval of critical importance in the history of life as it records major events such as the Cambrian Explosion and the Ordovician Radiation. Analyses of macroevolutionary and macroecological dynamics explored from a morphospace perspective at different scales and from a palaeoecological viewpoint remain scarce. In this contribution we show the potential power that morphospace analysis can bring to the study of the ecological context of radiations. For this we focus on important trilobite assemblages ranging from the late Cambrian - Early Ordovician of the Argentine Cordillera Oriental. We calculated trilobite disparity through seven time bins that encompass the Furongian, Tremadocian and the Floian. Our results show a hierarchical structure in disparity patterns, where regional disparity is modulated by its beta component during the Furongian – lower Tremadocian, changing towards the Floian where alpha disparity becomes a stronger contributor. These trends reveal a shift in the assembly of regional disparity, modulated by the way local coexistence is controlled. Additionally, the temporal decoupling recorded in diversity and disparity trends can be related to the way these patterns are structured across the ecological hierarchy. This coincides with moments of high compositional turnover, congruent with the timing of transition between trilobite evolutionary faunas (TEFs) at a global scale. Peaks in regional disparity are related to the sum of these faunas contributing high values rather than to a growing disparity of the successive TEFs, suggesting that the rise in disparity is due to the coexistence of evolutionary faunas. Regional-scale dynamics described herein coupled with previous evidence regarding global patterns allow us to consider that the transition between trilobite evolutionary faunas was mainly related to increasing niche differentiation, followed by an increase in dispersal. These results suggest a context of higher ecological complexity than previously envisaged for the early stages of the Ordovician Radiation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARGENTINA
dc.subject
CAMBRO - ORDOVICIAN
dc.subject
DISPARITY
dc.subject
DIVERSITY
dc.subject
EVOLUTIONARY FAUNAS
dc.subject
TRILOBITES
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Morphospace trends underlying a global turnover: ecological dynamics of trilobite assemblages at the onset of the Ordovician Radiation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-02-06T13:47:00Z
dc.journal.volume
615
dc.journal.pagination
1-13
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Serra, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
dc.description.fil
Fil: Balseiro, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
dc.description.fil
Fil: Waisfeld, Beatriz Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
dc.journal.title
Palaeogeography, Palaeoclimatology, Palaeoecology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.palaeo.2023.111448
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031018223000664
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