20th century increase in body size of a hypoxia-tolerant bivalve documented by sediment cores from the northern Adriatic Sea (Gulf of Trieste)

Fuksi, Tomáš; Tomášových, Adam; Gallmetzer, Ivo; Haselmair, Alexandra; Zuschin, Martin

doi:10.1016/j.marpolbul.2018.07.004

Cited by 17 publications

(7 citation statements)

References 114 publications

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“…The main influences on the TOC content of sedimentary rocks are primary production and organic matter preservation (Arthur and Sageman 1994), and the latter is primarily controlled by sedimentation rate not bottom water oxygen levels (Betts and Holland 1991). The lack of a timescale for the bifrons zone in Yorkshire means the influence of variations in sedimentation rate on TOC cannot be excluded, but cyclostratigraphic data from the falciferum and tenuicostatum zones suggest that sedimentation rates did not vary much (Kemp et al 2011 Borja et al 2000;Caswell and Frid 2018;Fuksi et al 2018;Weston 1990). For instance, changes in the size of the bivalve Corbula gibba in deoxygenated and oxygenated areas of the Adriatic Sea over the last c. 10 ka were due to changes in TOC content (Fuksi et al 2018) that are of a similar magnitude to those found in the present-study.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Recovery of benthic communities following the Toarcian oceanic anoxic event in the Cleveland Basin, UK

Caswell

Dawn

2019

Palaeogeography, Palaeoclimatology, Palaeoecology

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During the Toarcian oceanic anoxic event (OAE) considerable environmental changes occurred that were associated with global warming, perturbations to the Ccycle and ocean deoxygenation which resulted in a mass extinction of marine fauna. Recovery of the biota after the event was protracted and has to date undergone limited study. However, understanding the patterns and processes of recovery are critical to anticipating ecosystem responses to the environmental changes predicted for the near future. Results showed that increases in benthic diversity, and the reestablishment of the Toarcian infauna was gradual and followed the changing redox conditions. Pioneering infauna, such as Dacryomya ovum that dominated the

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Section: Accepted Manuscriptmentioning

confidence: 99%

Recovery of benthic communities following the Toarcian oceanic anoxic event in the Cleveland Basin, UK

Caswell

Dawn

2019

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…LU-I contains diverse mollusk fauna in the upper part (1-50 cm) and intermediate-low diverse and less abundant marine fauna in the lower part (50-75 cm). The mollusk faunas in this unit are dominated by Varicorbula gibba, Nucula nucleus, Acanthocardia paucicostata, Parvicardium exiguum, and smooth Dentaliidae, indicative of a shallow marine seafloor with high organic content and potentially (seasonal) hypoxic conditions [76]. Bittium reticulatum, Rissoa parva s.l., and R. membranacea s.l.…”

Section: Mollusks and Foraminiferamentioning

confidence: 97%

Holocene Paleoenvironmental Evolution of a Semi-Enclosed Shallow Aegean Basin: A Combination of Seismic Stratigraphy and Sediment Core Proxies

Noti

Lourens

Geraga

et al. 2022

Water

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The island of Astypalea (Greece), known for its rich and pristine archeological sites, encompasses a semi-enclosed silled basin that has been very susceptible to global sea levels and regional climate changes due to its relatively modern shallow sill of 4.7 m water deep that connects the Vathy bay with the adjacent Aegean Sea. To identify the causal relationship between regional climate, sea-level trajectories, and environmental change and their potential impact on hominine habitats on the island, we investigated a high-resolution seismic profile together with sediment, stable isotope, geochemical, and biotic proxies retrieved from a marine sediment core (ASTC1). Our results show that the basin was once isolated, and a marine inundation occurred at around 7.3 ka BP, which is older than expected, based on global sea level reconstructions. The entire transition from isolation to full marine conditions was accomplished in three major phases: (1) non-marine isolated conditions between 9–7.3 ka BP, (2) semi-isolated hypersaline marsh and lagoonal conditions between 7.3 and 4.1 ka BP, and (3) semi-isolated shallow marine conditions of today (4.1 ka BP to present). High water alkalinity, elevated organic content, and heavier isotopic signals indicate relatively arid conditions in the region that favored Sr-rich carbonate precipitation within the 7.3–6 ka BP interval. On the other hand, freshwater biota, along with a high Corg/N ratio and lighter isotopic signal, showed wetter conditions, at least for the intervals 8–7.3 ka and 6–5.4 ka BP, in contrast to the aridification trend seen as 4.1 ka to present. Finally, the hominine habitat evolution at around 6 ka BP might be attributed to the wetter conditions and the freshwater source provided by the bay at that time.

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“…Opposite in the continuum is an offshore assemblage dominated by the opportunistic suspensionfeeding bivalve Corbula gibba Olivi, 1792 and the extinct cemented epifaunal gastropod Petaloconchus glomeratus. Corbula gibba is a hypoxia-tolerant subtidal species (Dominici, 2001;Fuksi et al, 2018;Cau et al, 2020), presently living on average at a depth of 26 m (based on 2973 observations; Dominici et al, 2018), but with a very skewed distribution, ranging from very shallow (e.g., Benvenuti & Dominici, 1992) to epibathyal water depths (Pérès & Picard, 1964). Petaloconchus bioconstructions are known in the Mediterranean from the late Miocene to the Holocene, also at a wide paleobathymetric range, from the upper subtidal to 30-50 m (Vescogni et al, 2008).…”

Section: Quantitative Molluscan Paleobiologymentioning

confidence: 99%

Pliocene-Pleistocene stratigraphic paleobiology at Altavilla Milicia (Palermo, Sicily): tectonic, climatic and eustatic forcing

Dominici¹,

Benvenuti²,

Garilli³

et al. 2020

Preprint

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<p>The integration of sedimentary facies analysis, ichnology and benthic mollusc quantitative paleoecology allowed to interpret factors controlling deposition of the Altavilla Milicia alluvial to marine succession, near Palermo, Sicily. Two major composite units are recognised, separated by an angular unconformity and internally subdivided into elementary depositional sequences. Calcareous nannoplankton biostratigraphy allowed to recognize the upper Pliocene and lower Pleistocene, a time interval that covers the onset of the Quaternary glaciation. The main asset of the succession is driven by tectonic compression and accommodation by transpressional faults, a regime that led to a change in the direction of fluvial sediment delivery, from axial to transverse with respect to the basin elongation. High-frequency eustatic changes have driven the formation of elementary depositional sequences. The upper Piacenzian is characterised by marine bioclastic strata, deposited during maximum flooding intervals of the two large composite units. Mixed carbonate-siliciclastic lithosomes show a good correlation with shallow marine shell-rich detrital carbonates of Northern and Southern Italy and with Mediterranean deep-water sapropel clusters, suggesting common climatic forcing. Some tropical species previously thought to disappear from the Mediterranean at around 3.0 Ma, are instead present in the upper Piacenzian of Sicily. The study suggests that the Pliocene macrobenthos with tropical affinities disappeared from different sectors of the Mediterranean at different times.</p>

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20th century increase in body size of a hypoxia-tolerant bivalve documented by sediment cores from the northern Adriatic Sea (Gulf of Trieste)

Cited by 17 publications

References 114 publications

Recovery of benthic communities following the Toarcian oceanic anoxic event in the Cleveland Basin, UK

Recovery of benthic communities following the Toarcian oceanic anoxic event in the Cleveland Basin, UK

Holocene Paleoenvironmental Evolution of a Semi-Enclosed Shallow Aegean Basin: A Combination of Seismic Stratigraphy and Sediment Core Proxies

Pliocene-Pleistocene stratigraphic paleobiology at Altavilla Milicia (Palermo, Sicily): tectonic, climatic and eustatic forcing

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