Population response during an Oceanic Anoxic Event: The case of Posidonotis (Bivalvia) from the Lower Jurassic of the Neuquén Basin, Argentina

Ros-Franch, Sonia; Echevarría, Javier; Damborenea, Susana E.; Manceñido, Miguel O.; Jenkyns, Hugh C.; Suwaidi, Aisha Al; Hesselbo, Stephen P.; Riccardi, Alberto

doi:10.1016/j.palaeo.2019.04.009

Cited by 12 publications

(3 citation statements)

References 82 publications

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“…Following a phase of very low temperatures during the Late Pliensbachian, increased volcanic activity in the Early Toarcian in combination with other factors (such as the release of methane hydrates from continental shelfs; Hesselbo et al 2000a) seems to have caused perturbations in the carbon cycle, intense global warming, ocean acidification, and ultimately mass extinctions (e.g., Aberhan and Fürsich 1996;Pálfy and Smith 2000;Aberhan and Baumiller 2003;Cecca and Macchioni 2004;Gómez et al 2008;Dera et al 2010;Dera and Donnadieu 2012;Danise et al 2013;Huang and Hesselbo 2014;Krencker et al 2014). While the global nature of many of the Early Jurassic events (particularly the TOAE) has been illustrated by geochemical analyses of rocks outside Europe (e.g., Al-Suwaidi et al 2010, 2016Mazzini et al 2010;Caruthers et al 2011;Gröcke et al 2011;Suan et al 2011;Yi et al 2013;Kemp and Izumi 2014;Ros-Franch et al 2019), reconstructions of absolute water temperatures for the Early Jurassic are almost completely restricted to the northwestern Tethys. In the present study, a collection of Sinemurian to Toarcian oyster and brachiopod shells from the Andean Basin of Chile has been analyzed for their stable isotope (δ 13 C, δ 18 O) content in a first step to remedy this lack of data.…”

Section: Introductionmentioning

confidence: 99%

First steps in reconstructing Early Jurassic sea water temperatures in the Andean Basin of northern Chile based on stable isotope analyses of oyster and brachiopod shells

2019

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The stable isotope (δ 13 C, δ 18 O) composition of a collection of Lower Jurassic brachiopods and oysters from the Andean Basin of northern Chile was analyzed. The results allow the first reconstruction of absolute water temperatures for several ammonite zones in the Lower Jurassic of South America. The temperature record starts with comparatively high values in the Late Sinemurian (average: 27.0°C; Raricostatum Zone). Just before the Sinemurian-Pliensbachian transition, temperatures dropped to an average of 24.3°C. The lowest temperature value in the dataset was recorded for a brachiopod shell of the latest Pliensbachian Spinatum Zone (19.6°C). No data are available for the Early Toarcian, but results for the late Toarcian show again comparatively warm conditions (average: 24.4°C; Thouarsense-Levesquei zones). Even though more material and analyses are necessary to corroborate the recorded temperatures, the present dataset seems to indicate the global nature of the Late Pliensbachian Cooling Event. In contrast, the global warming during the Toarcian Oceanic Anoxic Event has not been recorded due to a lack of Early Toarcian material. The δ 13 C record of brachiopods and oysters documents a gradual increase in values representing background conditions. Oyster shells were used for high-resolution stable isotope analyses and show seasonal temperature fluctuations over a period of around 3 years in the life time of the bivalves. If explained only by temperatures, the δ 18 O values point to a minimum estimate for the seasonality in the late Toarcian of slightly more than 3°C.

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Section: Introductionmentioning

confidence: 99%

First steps in reconstructing Early Jurassic sea water temperatures in the Andean Basin of northern Chile based on stable isotope analyses of oyster and brachiopod shells

2019

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“…Both pulses have been linked with climate-related stressors (CRS), itself likely triggered by volcanic activity in the Karoo-Ferrar province (Müller et al, 2020;Ruebsam & Al-Husseini, 2020;Suan et al, 2010). Previous studies have also linked these pulses to changes in body size distribution with assemblages of various animal clades (Caswell & Coe, 2013;Caswell & Dawn, 2019;García Joral et al, 2018;Martindale & Aberhan, 2017;Morten & Twitchett, 2009;Piazza et al, 2019Piazza et al, , 2020Ros-Franch et al, 2019) including belemnites (Nätscher et al, 2021;Rita et al, 2018Rita et al, , 2019. The relative contribution of within-species fluctuations versus taxonomic turnover in driving such size fluctuations in assemblages still needs to be more widely understood (e.g., Twitchett, 2007;Rego et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

The impact of the Pliensbachian–Toarcian crisis on belemnite assemblages and size distribution

et al. 2021

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The second-order Pliensbachian–Toarcian crisis affected major groups of marine organisms. While its impact has been intensively studied for ammonites, the response of belemnites is only currently emerging through quantitative studies. Novel overall and regional diversity analyses suggest that belemnite richness in the NW-Tethys drops at the Pliensbachian–Toarcian boundary, while overall diversity slightly increases in NW-Tethys assemblages during the Toarcian Oceanic Anoxic event (T-OAE), mostly driven by NW European assemblages (e.g., Yorkshire). The T-OAE coincides with marked taxonomic turnover within individual basins, which is associated with an increase in median rostrum size of specimens in taxa at most localities. The changes in median body size across the Pliensbachian–Toarcian boundary are less consistent and driven by changes in body size within individual lineages crossing the boundary. However, our analyses also illustrate differences in sampling across the Pliensbachian–Toarcian crisis, which needs to be considered in further studies.

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“…molluscs, brachiopods, ostracods, foraminifera and dinoflagellates, and with changes in community structure (e.g., [18,24,[27][28][29][30][31][32][33]. The proximate causes are debated and most studies see widespread dysoxia-anoxia as the main stressor (e.g., [5,24,[27][28][29][30][34][35][36][37], with Them et al [38] even arguing for global ocean deoxygenation to have already started at the Pliensbachian/Toarcian boundary. Yet, the record of dysoxia-anoxia is far from ubiquitous as is evident from faunal and facies analyses in oxygenated environments from SW Europe [9,11,[13][14][15]17,39].…”

Section: Introductionmentioning

confidence: 99%

Ocean warming affected faunal dynamics of benthic invertebrate assemblages across the Toarcian Oceanic Anoxic Event in the Iberian Basin (Spain)

2020

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The Toarcian Oceanic Anoxic Event (TOAE; Early Jurassic, ca. 182 Ma ago) represents one of the major environmental disturbances of the Mesozoic and is associated with global warming, widespread anoxia, and a severe perturbation of the global carbon cycle. Warming-related dysoxia-anoxia has long been considered the main cause of elevated marine extinction rates, although extinctions have been recorded also in environments without evidence for deoxygenation. We addressed the role of warming and disturbance of the carbon cycle in an oxygenated habitat in the Iberian Basin, Spain, by correlating high resolution quantitative faunal occurrences of early Toarcian benthic marine invertebrates with geochemical proxy data (δ18O and δ13C). We find that temperature, as derived from the δ18O record of shells, is significantly correlated with taxonomic and functional diversity and ecological composition, whereas we find no evidence to link carbon cycle variations to the faunal patterns. The local faunal assemblages before and after the TOAE are taxonomically and ecologically distinct. Most ecological change occurred at the onset of the TOAE, synchronous with an increase in water temperatures, and involved declines in multiple diversity metrics, abundance, and biomass. The TOAE interval experienced a complete turnover of brachiopods and a predominance of opportunistic species, which underscores the generality of this pattern recorded elsewhere in the western Tethys Ocean. Ecological instability during the TOAE is indicated by distinct fluctuations in diversity and in the relative abundance of individual modes of life. Local recovery to ecologically stable and diverse post-TOAE faunal assemblages occurred rapidly at the end of the TOAE, synchronous with decreasing water temperatures. Because oxygen-depleted conditions prevailed in many other regions during the TOAE, this study demonstrates that multiple mechanisms can be operating simultaneously with different relative contributions in different parts of the ocean.

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Population response during an Oceanic Anoxic Event: The case of Posidonotis (Bivalvia) from the Lower Jurassic of the Neuquén Basin, Argentina

Cited by 12 publications

References 82 publications

First steps in reconstructing Early Jurassic sea water temperatures in the Andean Basin of northern Chile based on stable isotope analyses of oyster and brachiopod shells

First steps in reconstructing Early Jurassic sea water temperatures in the Andean Basin of northern Chile based on stable isotope analyses of oyster and brachiopod shells

The impact of the Pliensbachian–Toarcian crisis on belemnite assemblages and size distribution

Ocean warming affected faunal dynamics of benthic invertebrate assemblages across the Toarcian Oceanic Anoxic Event in the Iberian Basin (Spain)

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