Testing an indirect palaeo-seagrass indicator: Benthic foraminifera from the Lower Pleistocene Posidonia meadow of Fauglia (Tuscany, Italy)

Mariani, Luca; Coletti, Giovanni; Mateu‐Vicens, Guillem; Bosio, Giovanni; Collareta, Alberto; Khokhlova, Anna; Cencio, Andrea Di; Casati, Simone; Malinverno, Elisa

doi:10.1016/j.marmicro.2022.102126

Cited by 6 publications

(3 citation statements)

References 71 publications

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“…(2) the specific composition and growth morphology of crustose coralline red algae, bryozoans, ostracods and mollusks; (3) the presence of hydroids, lucinid bivalves and other chemosymbiotic bivalves, as well as some sharks, sirenians, sea snakes, specific echinoderms, gastropods and ostracods (e.g., genera Loxoconcha, Xestolebe ris and Aurila); (4) occurrence of Pinnidae in the life position and otoliths of juvenile sciaenids (Eva 1980;Domning 1981;van der Heide et al 2012;Vélez-Juarbe 2013;Di Martino & Taylor 2014;Reich et al 2014Reich et al , 2015Forsey 2016Forsey , 2018Forsey , 2019Tomás et al 2016;Mariani et al 2022;etc. ).…”

Section: Discussionmentioning

confidence: 99%

Late Eocene (Priabonian) coleoid cephalopods from the Mandrykivka Beds of the city of Dnipro, Ukraine

Dernov,

Demianov

2023

Bull. Geosci.

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Section: Discussionmentioning

confidence: 99%

Late Eocene (Priabonian) coleoid cephalopods from the Mandrykivka Beds of the city of Dnipro, Ukraine

Dernov,

Demianov

2023

Bull. Geosci.

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“…The well-preserved Pliocene muricid from La Serra, characterized by a pristine aperture without sclerobiont overgrowths and no evidence of boring or encrustation in the body chamber (Figure 3A-E), are also likely to represent examples of in vivo colonization. Cladocora caespitosa is very common in the sedimentary fill of the late Neogene and Quaternary basins of central Italy [8,[57][58][59][60] and was also probably common in the La Serra area, as suggested by the presence of pyrgomatid barnacles that only grow onto corals (Figure 3I).…”

Section: Discussionmentioning

confidence: 99%

Symbiont-Bearing Colonial Corals and Gastropods: An Odd Couple of the Shallow Seas

Coletti

Collareta

Cencio

et al. 2023

JMSE

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In order to investigate the serendipitous find of a gastropod encrusted by the symbiont-bearing colonial coral Oculina patagonica, we examined several specimens of cnidarian-encrusted gastropods, ranging in age from the Pliocene to the Recent, and characterized in detail their sclerobiont cover. The results of our analysis suggest that gastropod shells can be encrusted by symbiont-bearing colonial corals at various times: (1) when the gastropod is alive; (2) when the shell is being used by a secondary inhabitant (e.g., hermit crabs or sipunculid worms); (3) when the shell is discarded but yet to be buried. The relationship between the symbiont-bearing coral and the inhabitant(s) of the encrusted shell is an example of facultative mutualism, i.e., it is non-obligate yet beneficial for both ends as the former obtains the capability to move, and the latter improves the resistance and resilience of its armor, thus obtaining extra protection from predators. Being able to move could prove particularly useful for a symbiont-bearing coral because, in addition to removing the risk of being smothered by sediment, it would also favor the photosynthetic activity of its algal endosymbionts by allowing the coral to be always clean of sedimentary particles. Although the resulting epibiotic association would be limited in size by the ability of either the gastropod or the secondary inhabitant of the shell to move at the seafloor, these small and easy-to-miss benthic islands might become the seeds that allow sessile carbonate producers such as hermatypic colonial corals to colonize unconsolidated substrates.

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“…Unfortunately, their thin HMC test can be easily dissolved during diagenesis, limiting the possibility of actually recognizing seagrass or seaweed related facies in the fossil record unless other indicators (e.g. large encrusting rotaliids are preserved, Reich et al 2015;Mariani et al 2022).…”

Section: Controls On Sediment and Facies Distribution On The L/c-type...mentioning

confidence: 99%

Controls on mesophotic carbonate facies and sediment distribution across the Maltese shelf, central Mediterranean Sea

Bialik,

Coletti,

Berndt

et al. 2024

Preprint

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Although ~20% of global carbonate occurs on extra-tropical shelves, our understanding of these depositional environments still lags far behind that of tropical carbonate platforms. The Maltese shelf in the central Mediterranean offers an opportunity to study in situ facies distribution in a light-dominated extra-tropical carbonate platform and the factors controlling them. The Maltese shelf visually exhibits three main facies: seagrass meadows; sand flats/bedforms and maerl. While visually distinctive, the allochem composition of the sediment does not offer a clear differentiation of all three but rather a gradient. This gradient is marked by increasing grain size with depth, a transition from green to red calcareous algae and an increase in the fraction of low Mg calcite. While some of these features could be explained by changes in light availability, other factors are also in play. Internal waves, currents and baffling by seafloor vegetation appear to play important roles in governing the sedimentary texture and composition across the Maltese shelf. The role of vegetated substrate is of greater importance in Mediterranean C-type carbonate factories and could be an important marker to identify them in the geological record.

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Testing an indirect palaeo-seagrass indicator: Benthic foraminifera from the Lower Pleistocene Posidonia meadow of Fauglia (Tuscany, Italy)

Cited by 6 publications

References 71 publications

Late Eocene (Priabonian) coleoid cephalopods from the Mandrykivka Beds of the city of Dnipro, Ukraine

Late Eocene (Priabonian) coleoid cephalopods from the Mandrykivka Beds of the city of Dnipro, Ukraine

Symbiont-Bearing Colonial Corals and Gastropods: An Odd Couple of the Shallow Seas

Controls on mesophotic carbonate facies and sediment distribution across the Maltese shelf, central Mediterranean Sea

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