Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina

Autores
Luci, Leticia; Garberoglio, Ricardo Miguel; Lazo, Dario Gustavo; Palma, Ricardo Manuel
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Reefs are hotspots of diversity, modifying their surroundings and fostering numerous biotic interactions: in the fossil record, they preserve valuable paleoecological and paleoenvironmental information. Lower Cretaceous reefs are understudied; this paper analyzes the sclerobiont fauna of a Hauterivian patch-reef from the Neuquen Basin (Argentina) to interpret its life history and paleoenvironmental significance. Massive and ramose forms of paleoautoecologically homogeneous genera form this reef; corals bore zooxanthellae and presented features indicative of a tolerance for high-sedimentary input. Sclerobionts were analyzed separately for ramose and massive corals. In addition, the upper and lower surfaces of massive corales were also logged separately. The sclerobiont fauna comprised mainly thecideide brachiopods, oysters, serpulids, cyclostome bryozoans and calcareous sponges. In addition, in ramose corals only, microbial crusts are also recorded and encrusted by sclerobionts. Massive corals presented lower diversity indices as compared to ramose ones. In both coral morphotypes, bioclaustrated sclerobionts were registered: in particular, serpulids established mutualistic relationships with the corals. Massive corals’ undersides hosted a much more abundant, sciaphyllous sclerobiont fauna. This patch reef dwelled in a mid-ramp setting under relatively high sedimentation rates; massive corals were buried more quickly than ramose forms. The microbialites settled only on ramose corals after the patchreef began to dwindle; massive ones were already buried, but ramose ones remained in life position. The arrival of microbialites indicates lowered sedimentation rates, likely due to nutrient enrichment. Thus, the pattern of sclerobiont distribution observed in these corals reflects not a vertical zonation of coeval sclerobionts, but rather an allogenic succession that evidences the progressive burial of the patch-reef. At Early Cretaceous mid-latitude settings, corals were adapted to suboptimal conditions, such as a relatively high sedimentation, sustaining a moderately diverse and dynamic sclerobiont fauna composed mostly of heterotrophic organisms.
Fil: Luci, Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Garberoglio, Ricardo Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Lazo, Dario Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Palma, Ricardo Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Materia
Encrustation
Scleractinia
Oyster
Brachiopoda
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/272466
Acceder
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spelling Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central ArgentinaLuci, LeticiaGarberoglio, Ricardo MiguelLazo, Dario GustavoPalma, Ricardo ManuelEncrustationScleractiniaOysterBrachiopodahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Reefs are hotspots of diversity, modifying their surroundings and fostering numerous biotic interactions: in the fossil record, they preserve valuable paleoecological and paleoenvironmental information. Lower Cretaceous reefs are understudied; this paper analyzes the sclerobiont fauna of a Hauterivian patch-reef from the Neuquen Basin (Argentina) to interpret its life history and paleoenvironmental significance. Massive and ramose forms of paleoautoecologically homogeneous genera form this reef; corals bore zooxanthellae and presented features indicative of a tolerance for high-sedimentary input. Sclerobionts were analyzed separately for ramose and massive corals. In addition, the upper and lower surfaces of massive corales were also logged separately. The sclerobiont fauna comprised mainly thecideide brachiopods, oysters, serpulids, cyclostome bryozoans and calcareous sponges. In addition, in ramose corals only, microbial crusts are also recorded and encrusted by sclerobionts. Massive corals presented lower diversity indices as compared to ramose ones. In both coral morphotypes, bioclaustrated sclerobionts were registered: in particular, serpulids established mutualistic relationships with the corals. Massive corals’ undersides hosted a much more abundant, sciaphyllous sclerobiont fauna. This patch reef dwelled in a mid-ramp setting under relatively high sedimentation rates; massive corals were buried more quickly than ramose forms. The microbialites settled only on ramose corals after the patchreef began to dwindle; massive ones were already buried, but ramose ones remained in life position. The arrival of microbialites indicates lowered sedimentation rates, likely due to nutrient enrichment. Thus, the pattern of sclerobiont distribution observed in these corals reflects not a vertical zonation of coeval sclerobionts, but rather an allogenic succession that evidences the progressive burial of the patch-reef. At Early Cretaceous mid-latitude settings, corals were adapted to suboptimal conditions, such as a relatively high sedimentation, sustaining a moderately diverse and dynamic sclerobiont fauna composed mostly of heterotrophic organisms.Fil: Luci, Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Garberoglio, Ricardo Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Lazo, Dario Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Palma, Ricardo Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaElsevier Science2025-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/272466Luci, Leticia; Garberoglio, Ricardo Miguel; Lazo, Dario Gustavo; Palma, Ricardo Manuel; Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 678; 113228; 11-2025; 1-170031-0182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0031018225005139info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2025.113228info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:06:41Zoai:ri.conicet.gov.ar:11336/272466instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:06:41.431CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina
title Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina
spellingShingle Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina
Luci, Leticia
Encrustation
Scleractinia
Oyster
Brachiopoda
title_short Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina
title_full Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina
title_fullStr Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina
title_full_unstemmed Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina
title_sort Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina
dc.creator.none.fl_str_mv Luci, Leticia
Garberoglio, Ricardo Miguel
Lazo, Dario Gustavo
Palma, Ricardo Manuel
author Luci, Leticia
author_facet Luci, Leticia
Garberoglio, Ricardo Miguel
Lazo, Dario Gustavo
Palma, Ricardo Manuel
author_role author
author2 Garberoglio, Ricardo Miguel
Lazo, Dario Gustavo
Palma, Ricardo Manuel
author2_role author
author
author
dc.subject.none.fl_str_mv Encrustation
Scleractinia
Oyster
Brachiopoda
topic Encrustation
Scleractinia
Oyster
Brachiopoda
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Reefs are hotspots of diversity, modifying their surroundings and fostering numerous biotic interactions: in the fossil record, they preserve valuable paleoecological and paleoenvironmental information. Lower Cretaceous reefs are understudied; this paper analyzes the sclerobiont fauna of a Hauterivian patch-reef from the Neuquen Basin (Argentina) to interpret its life history and paleoenvironmental significance. Massive and ramose forms of paleoautoecologically homogeneous genera form this reef; corals bore zooxanthellae and presented features indicative of a tolerance for high-sedimentary input. Sclerobionts were analyzed separately for ramose and massive corals. In addition, the upper and lower surfaces of massive corales were also logged separately. The sclerobiont fauna comprised mainly thecideide brachiopods, oysters, serpulids, cyclostome bryozoans and calcareous sponges. In addition, in ramose corals only, microbial crusts are also recorded and encrusted by sclerobionts. Massive corals presented lower diversity indices as compared to ramose ones. In both coral morphotypes, bioclaustrated sclerobionts were registered: in particular, serpulids established mutualistic relationships with the corals. Massive corals’ undersides hosted a much more abundant, sciaphyllous sclerobiont fauna. This patch reef dwelled in a mid-ramp setting under relatively high sedimentation rates; massive corals were buried more quickly than ramose forms. The microbialites settled only on ramose corals after the patchreef began to dwindle; massive ones were already buried, but ramose ones remained in life position. The arrival of microbialites indicates lowered sedimentation rates, likely due to nutrient enrichment. Thus, the pattern of sclerobiont distribution observed in these corals reflects not a vertical zonation of coeval sclerobionts, but rather an allogenic succession that evidences the progressive burial of the patch-reef. At Early Cretaceous mid-latitude settings, corals were adapted to suboptimal conditions, such as a relatively high sedimentation, sustaining a moderately diverse and dynamic sclerobiont fauna composed mostly of heterotrophic organisms.
Fil: Luci, Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Garberoglio, Ricardo Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Lazo, Dario Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Palma, Ricardo Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
description Reefs are hotspots of diversity, modifying their surroundings and fostering numerous biotic interactions: in the fossil record, they preserve valuable paleoecological and paleoenvironmental information. Lower Cretaceous reefs are understudied; this paper analyzes the sclerobiont fauna of a Hauterivian patch-reef from the Neuquen Basin (Argentina) to interpret its life history and paleoenvironmental significance. Massive and ramose forms of paleoautoecologically homogeneous genera form this reef; corals bore zooxanthellae and presented features indicative of a tolerance for high-sedimentary input. Sclerobionts were analyzed separately for ramose and massive corals. In addition, the upper and lower surfaces of massive corales were also logged separately. The sclerobiont fauna comprised mainly thecideide brachiopods, oysters, serpulids, cyclostome bryozoans and calcareous sponges. In addition, in ramose corals only, microbial crusts are also recorded and encrusted by sclerobionts. Massive corals presented lower diversity indices as compared to ramose ones. In both coral morphotypes, bioclaustrated sclerobionts were registered: in particular, serpulids established mutualistic relationships with the corals. Massive corals’ undersides hosted a much more abundant, sciaphyllous sclerobiont fauna. This patch reef dwelled in a mid-ramp setting under relatively high sedimentation rates; massive corals were buried more quickly than ramose forms. The microbialites settled only on ramose corals after the patchreef began to dwindle; massive ones were already buried, but ramose ones remained in life position. The arrival of microbialites indicates lowered sedimentation rates, likely due to nutrient enrichment. Thus, the pattern of sclerobiont distribution observed in these corals reflects not a vertical zonation of coeval sclerobionts, but rather an allogenic succession that evidences the progressive burial of the patch-reef. At Early Cretaceous mid-latitude settings, corals were adapted to suboptimal conditions, such as a relatively high sedimentation, sustaining a moderately diverse and dynamic sclerobiont fauna composed mostly of heterotrophic organisms.
publishDate 2025
dc.date.none.fl_str_mv 2025-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/272466
Luci, Leticia; Garberoglio, Ricardo Miguel; Lazo, Dario Gustavo; Palma, Ricardo Manuel; Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 678; 113228; 11-2025; 1-17
0031-0182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/272466
identifier_str_mv Luci, Leticia; Garberoglio, Ricardo Miguel; Lazo, Dario Gustavo; Palma, Ricardo Manuel; Vertical zonation or allogenic succession? Sclerobionts on a coral patch-reef from the Lower Cretaceous Agrio Formation, Neuquén Basin, west-central Argentina; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 678; 113228; 11-2025; 1-17
0031-0182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0031018225005139
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2025.113228
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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