Dancing Towards the End—Ecological Oscillations in Mediterranean Coral Reefs Prior to the Messinian Salinity Crisis (Calcare di Rosignano Formation, Acquabona, Tuscany, Italy)

The lower Messinian Calcare di Rosignano Formation (Tuscany, Italy, 43° N) preserves one of the youngest and northernmost examples of coral reefs in the Mediterranean. The outcropping succession of the Acquabona quarry consists of four main facies, namely, in ascending stratigraphic order: (1) coral...

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Main Authors: Giovanni Coletti, Alberto Vimercati, Francesca R. Bosellini, Alberto Collareta, Giulia Bosio, Adriano Guido, Alessandro Vescogni, Daniela Basso, Or M. Bialik
Format: Article
Language:English
Published: MDPI AG 2024-10-01
Series:Geosciences
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Online Access:https://www.mdpi.com/2076-3263/14/11/285
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author Giovanni Coletti
Alberto Vimercati
Francesca R. Bosellini
Alberto Collareta
Giulia Bosio
Adriano Guido
Alessandro Vescogni
Daniela Basso
Or M. Bialik
author_facet Giovanni Coletti
Alberto Vimercati
Francesca R. Bosellini
Alberto Collareta
Giulia Bosio
Adriano Guido
Alessandro Vescogni
Daniela Basso
Or M. Bialik
author_sort Giovanni Coletti
collection DOAJ
description The lower Messinian Calcare di Rosignano Formation (Tuscany, Italy, 43° N) preserves one of the youngest and northernmost examples of coral reefs in the Mediterranean. The outcropping succession of the Acquabona quarry consists of four main facies, namely, in ascending stratigraphic order: (1) coral boundstone, (2) coralline algal rudstone, (3) serpulid floatstone to packstone, and (4) peloidal packstone to grainstone. The succession displays a trend toward increasingly more shallow conditions and progressively more restricted water circulation. The coral reef displays a limited coral biodiversity and a remarkable abundance of heterotrophs, similar to modern coral reefs developed at the edges of the ecological niche of symbiont-bearing colonial corals. The widespread presence of coral colonies pervasively encrusted by coralline algae and benthic foraminifera suggests that short-term environmental perturbations caused temporary shutdowns of the coral-dominated carbonate factory. Moving upwards, there are fewer corals and more highly adaptable carbonate producers like coralline algae and serpulids. This suggests that the decline of corals had been caused by the conditions in the basin becoming more stressful, up to the collapse of the coral community. The overall succession indicates that coral-dominated ecosystems located at the edges of the coral zone are very sensitive; they can be affected even by minor perturbations and easily collapse if negative conditions persist.
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spelling doaj-art-81c4308f96324d29ac17d7b29d2d2f292025-08-20T02:28:05ZengMDPI AGGeosciences2076-32632024-10-01141128510.3390/geosciences14110285Dancing Towards the End—Ecological Oscillations in Mediterranean Coral Reefs Prior to the Messinian Salinity Crisis (Calcare di Rosignano Formation, Acquabona, Tuscany, Italy)Giovanni Coletti0Alberto Vimercati1Francesca R. Bosellini2Alberto Collareta3Giulia Bosio4Adriano Guido5Alessandro Vescogni6Daniela Basso7Or M. Bialik8Dipartimento di Scienze dell’Ambiente e della Terra, Università degli Studi di Milano-Bicocca, 20126 Milano, ItalyDipartimento di Scienze dell’Ambiente e della Terra, Università degli Studi di Milano-Bicocca, 20126 Milano, ItalyDipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, 41125 Modena, ItalyDipartimento di Scienze della Terra, Università di Pisa, 56126 Pisa, ItalyDipartimento di Scienze della Terra, Università di Pisa, 56126 Pisa, ItalyDepartment of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, ItalyDipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, 41125 Modena, ItalyDipartimento di Scienze dell’Ambiente e della Terra, Università degli Studi di Milano-Bicocca, 20126 Milano, ItalyInstitute of Geology and Paleontology, University of Münster, 48149 Münster, GermanyThe lower Messinian Calcare di Rosignano Formation (Tuscany, Italy, 43° N) preserves one of the youngest and northernmost examples of coral reefs in the Mediterranean. The outcropping succession of the Acquabona quarry consists of four main facies, namely, in ascending stratigraphic order: (1) coral boundstone, (2) coralline algal rudstone, (3) serpulid floatstone to packstone, and (4) peloidal packstone to grainstone. The succession displays a trend toward increasingly more shallow conditions and progressively more restricted water circulation. The coral reef displays a limited coral biodiversity and a remarkable abundance of heterotrophs, similar to modern coral reefs developed at the edges of the ecological niche of symbiont-bearing colonial corals. The widespread presence of coral colonies pervasively encrusted by coralline algae and benthic foraminifera suggests that short-term environmental perturbations caused temporary shutdowns of the coral-dominated carbonate factory. Moving upwards, there are fewer corals and more highly adaptable carbonate producers like coralline algae and serpulids. This suggests that the decline of corals had been caused by the conditions in the basin becoming more stressful, up to the collapse of the coral community. The overall succession indicates that coral-dominated ecosystems located at the edges of the coral zone are very sensitive; they can be affected even by minor perturbations and easily collapse if negative conditions persist.https://www.mdpi.com/2076-3263/14/11/285<i>Porites</i>encrusting foraminiferacoralline algaeserpulidsdecapodsMiocene
spellingShingle Giovanni Coletti
Alberto Vimercati
Francesca R. Bosellini
Alberto Collareta
Giulia Bosio
Adriano Guido
Alessandro Vescogni
Daniela Basso
Or M. Bialik
Dancing Towards the End—Ecological Oscillations in Mediterranean Coral Reefs Prior to the Messinian Salinity Crisis (Calcare di Rosignano Formation, Acquabona, Tuscany, Italy)
Geosciences
<i>Porites</i>
encrusting foraminifera
coralline algae
serpulids
decapods
Miocene
title Dancing Towards the End—Ecological Oscillations in Mediterranean Coral Reefs Prior to the Messinian Salinity Crisis (Calcare di Rosignano Formation, Acquabona, Tuscany, Italy)
title_full Dancing Towards the End—Ecological Oscillations in Mediterranean Coral Reefs Prior to the Messinian Salinity Crisis (Calcare di Rosignano Formation, Acquabona, Tuscany, Italy)
title_fullStr Dancing Towards the End—Ecological Oscillations in Mediterranean Coral Reefs Prior to the Messinian Salinity Crisis (Calcare di Rosignano Formation, Acquabona, Tuscany, Italy)
title_full_unstemmed Dancing Towards the End—Ecological Oscillations in Mediterranean Coral Reefs Prior to the Messinian Salinity Crisis (Calcare di Rosignano Formation, Acquabona, Tuscany, Italy)
title_short Dancing Towards the End—Ecological Oscillations in Mediterranean Coral Reefs Prior to the Messinian Salinity Crisis (Calcare di Rosignano Formation, Acquabona, Tuscany, Italy)
title_sort dancing towards the end ecological oscillations in mediterranean coral reefs prior to the messinian salinity crisis calcare di rosignano formation acquabona tuscany italy
topic <i>Porites</i>
encrusting foraminifera
coralline algae
serpulids
decapods
Miocene
url https://www.mdpi.com/2076-3263/14/11/285
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