Regional and environmental variation in escalatory ecological trends during the Jurassic: a western Tethys hotspot for escalation?

Monarrez, Pedro M.; Aberhan, Martin; Holland, Steven M.

doi:10.1017/pab.2017.12

Cited by 4 publications

(2 citation statements)

References 77 publications

(111 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, our results demonstrate that Triassic–Jurassic bivalves show no obvious sign of the escalation-driven diversification that left a mark on their evolutionary rates. Further studies on smaller temporal and spatial scales may illuminate when and how predators affected the evolution of bivalves 58 (and brachiopods).…”

Section: Resultsmentioning

confidence: 99%

Bayesian analyses indicate bivalves did not drive the downfall of brachiopods following the Permian-Triassic mass extinction

Guo,

Flannery-Sutherland,

Benton

et al. 2023

Nat Commun

View full text Add to dashboard Cite

Certain times of major biotic replacement have often been interpreted as broadly competitive, mediated by innovation in the succeeding clades. A classic example was the switch from brachiopods to bivalves as major seabed organisms following the Permian-Triassic mass extinction (PTME), ~252 million years ago. This was attributed to competitive exclusion of brachiopods by the better adapted bivalves or simply to the fact that brachiopods had been hit especially hard by the PTME. The brachiopod-bivalve switch is emblematic of the global turnover of marine faunas from Palaeozoic-type to Modern-type triggered by the PTME. Here, using Bayesian analyses, we find that unexpectedly the two clades displayed similar large-scale trends of diversification before the Jurassic. Insight from a multivariate birth-death model shows that the extinction of major brachiopod clades during the PTME set the stage for the brachiopod-bivalve switch, with differential responses to high ocean temperatures post-extinction further facilitating their displacement by bivalves. Our study strengthens evidence that brachiopods and bivalves were not competitors over macroevolutionary time scales, with extinction events and environmental stresses shaping their divergent fates.

show abstract

Section: Resultsmentioning

confidence: 99%

Bayesian analyses indicate bivalves did not drive the downfall of brachiopods following the Permian-Triassic mass extinction

Guo,

Flannery-Sutherland,

Benton

et al. 2023

Nat Commun

View full text Add to dashboard Cite

show abstract

“…Potential Effects of Predation.-Increased durophagous predation was also a major macroevolutionary and ecological force during the Mesozoic marine revolution (Vermeij 1977(Vermeij , 2008Monarrez et al 2017). Other sessile groups, such as stalked crinoids, declined in diversity and shifted to offshore habitatsboth potentially consequences of enhanced predation pressure (Bottjer and Jablonski 1988;Gorzelak et al 2012).…”

Section: Discussionmentioning

confidence: 99%

The role of bioturbation-driven substrate disturbance in the Mesozoic brachiopod decline

Manojlovic

Clapham

2020

Paleobiology

View full text Add to dashboard Cite

Brachiopods dominated the seafloor as a primary member of the Paleozoic fauna. Despite the devastating effects of the end-Permian extinction, the group recovered during the early Mesozoic only to gradually decline from the Jurassic to today. This decline likely had multiple causes, including increased predation and bioturbation-driven substrate disruption, but the role of changing substrate is not well understood. Given the importance of substrate for extant brachiopod habitat, we documented Mesozoic–Cenozoic lithologic preferences and morphological changes to assess how decreasing firm-substrate habitat may have contributed to the brachiopod decline. Compared with bivalves, Mesozoic brachiopods occurred more frequently and were disproportionately abundant in carbonate lithologies. Although patterns in glauconitic or ferruginous sediments are equivocal, brachiopods became more abundant in coarser-grained carbonates and less abundant in fine-grained siliciclastics. During the Jurassic, brachiopod species rarely had abraded beaks but tended to be more convex with a high beak, potentially consistent with a non-analogue lifestyle resting on the seafloor. However, those highly convex morphotypes largely disappeared by the Cenozoic, when more terebratulides had abraded beaks, suggesting closer attachment to hard substrates. Rhynchonellides disproportionately declined to become a minor component of Cenozoic faunas, perhaps because of less pronounced morphological shifts. Trends in lithologic preferences and morphology are consistent with bioturbation-driven substrate disruption, with brachiopods initially using firmer carbonate sediments as refugia before adapting to live primarily attached to hard surfaces. This progressive habitat restriction likely played a role in the final brachiopod decline, as bioturbating ecosystem engineers transformed benthic habitats in the Mesozoic and Cenozoic.

show abstract

Did the evolution of the phytoplankton fuel the diversification of the marine biosphere?

Martin

Servais

2020

LET

View full text Add to dashboard Cite

Regional and environmental variation in escalatory ecological trends during the Jurassic: a western Tethys hotspot for escalation?

Cited by 4 publications

References 77 publications

Bayesian analyses indicate bivalves did not drive the downfall of brachiopods following the Permian-Triassic mass extinction

Bayesian analyses indicate bivalves did not drive the downfall of brachiopods following the Permian-Triassic mass extinction

The role of bioturbation-driven substrate disturbance in the Mesozoic brachiopod decline

Did the evolution of the phytoplankton fuel the diversification of the marine biosphere?

Contact Info

Product

Resources

About