Ocean Warming Affected Faunal Dynamics of Benthic Invertebrate Assemblages Across the Toarcian Oceanic Anoxic Event in the Iberian Basin (Spain)

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2020 Dec 9

PMID 33296368

Authors

Veronica Piazza

Clemens V Ullmann

Martin Aberhan

Affiliations

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Abstract

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.

References

Cui H, Xiao S, Cai Y, Peek S, Plummer R, Kaufman A . Sedimentology and chemostratigraphy of the terminal Ediacaran Dengying Formation at the Gaojiashan section, South China. Geol Mag. 2019; n/a. PMC: 6800678. DOI: 10.1017/S0016756819000293. View

Cross E, Harper E, Peck L . A 120-year record of resilience to environmental change in brachiopods. Glob Chang Biol. 2018; 24(6):2262-2271. PMC: 6850138. DOI: 10.1111/gcb.14085. View

Portner H . Climate variations and the physiological basis of temperature dependent biogeography: systemic to molecular hierarchy of thermal tolerance in animals. Comp Biochem Physiol A Mol Integr Physiol. 2002; 132(4):739-61. DOI: 10.1016/s1095-6433(02)00045-4. View

Danise S, Twitchett R, Little C, Clemence M . The impact of global warming and anoxia on marine benthic community dynamics: an example from the Toarcian (Early Jurassic). PLoS One. 2013; 8(2):e56255. PMC: 3572952. DOI: 10.1371/journal.pone.0056255. View

Caswell B, Frid C . Marine ecosystem resilience during extreme deoxygenation: the Early Jurassic oceanic anoxic event. Oecologia. 2016; 183(1):275-290. DOI: 10.1007/s00442-016-3747-6. View

Vaquer-Sunyer R, Duarte C . Thresholds of hypoxia for marine biodiversity. Proc Natl Acad Sci U S A. 2008; 105(40):15452-7. PMC: 2556360. DOI: 10.1073/pnas.0803833105. View

Murphy G, Romanuk T . A meta-analysis of declines in local species richness from human disturbances. Ecol Evol. 2014; 4(1):91-103. PMC: 3894891. DOI: 10.1002/ece3.909. View

Aberhan M, Kiessling W . Persistent ecological shifts in marine molluscan assemblages across the end-Cretaceous mass extinction. Proc Natl Acad Sci U S A. 2015; 112(23):7207-12. PMC: 4466711. DOI: 10.1073/pnas.1422248112. View

Rita P, Natscher P, Duarte L, Weis R, De Baets K . Mechanisms and drivers of belemnite body-size dynamics across the Pliensbachian-Toarcian crisis. R Soc Open Sci. 2020; 6(12):190494. PMC: 6936285. DOI: 10.1098/rsos.190494. View

10.

Parker L, Ross P, OConnor W, Portner H, Scanes E, Wright J . Predicting the response of molluscs to the impact of ocean acidification. Biology (Basel). 2014; 2(2):651-92. PMC: 3960890. DOI: 10.3390/biology2020651. View

11.

Portner H, Farrell A . Ecology. Physiology and climate change. Science. 2008; 322(5902):690-2. DOI: 10.1126/science.1163156. View

12.

Ullmann C, Boyle R, Duarte L, Hesselbo S, Kasemann S, Klein T . Warm afterglow from the Toarcian Oceanic Anoxic Event drives the success of deep-adapted brachiopods. Sci Rep. 2020; 10(1):6549. PMC: 7162941. DOI: 10.1038/s41598-020-63487-6. View

13.

Them 2nd T, C Gill B, Caruthers A, Gerhardt A, Grocke D, Lyons T . Thallium isotopes reveal protracted anoxia during the Toarcian (Early Jurassic) associated with volcanism, carbon burial, and mass extinction. Proc Natl Acad Sci U S A. 2018; 115(26):6596-6601. PMC: 6042096. DOI: 10.1073/pnas.1803478115. View

14.

Stuart-Smith R, Edgar G, Barrett N, Kininmonth S, Bates A . Thermal biases and vulnerability to warming in the world's marine fauna. Nature. 2015; 528(7580):88-92. DOI: 10.1038/nature16144. View

15.

Hillebrand H, Kunze C . Meta-analysis on pulse disturbances reveals differences in functional and compositional recovery across ecosystems. Ecol Lett. 2020; 23(3):575-585. DOI: 10.1111/ele.13457. View

16.

Them T, C Gill B, Selby D, Grocke D, Friedman R, Owens J . Evidence for rapid weathering response to climatic warming during the Toarcian Oceanic Anoxic Event. Sci Rep. 2017; 7(1):5003. PMC: 5504049. DOI: 10.1038/s41598-017-05307-y. View

17.

Barnosky A, Hadly E, Bascompte J, Berlow E, Brown J, Fortelius M . Approaching a state shift in Earth's biosphere. Nature. 2012; 486(7401):52-8. DOI: 10.1038/nature11018. View

18.

Foster W, Garvie C, Weiss A, Muscente A, Aberhan M, Counts J . Resilience of marine invertebrate communities during the early Cenozoic hyperthermals. Sci Rep. 2020; 10(1):2176. PMC: 7005832. DOI: 10.1038/s41598-020-58986-5. View

19.

Hesselbo , Grocke , Jenkyns , Bjerrum , Farrimond , Morgans Bell HS . Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event. Nature. 2000; 406(6794):392-5. DOI: 10.1038/35019044. View

20.

Piazza V, Ullmann C, Aberhan M . Temperature-related body size change of marine benthic macroinvertebrates across the Early Toarcian Anoxic Event. Sci Rep. 2020; 10(1):4675. PMC: 7069967. DOI: 10.1038/s41598-020-61393-5. View