The angiosperm radiation played a dual role in the diversification of insects and insect pollinators

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 22, 2024

Interactions with angiosperms have been hypothesised to play a crucial role in driving diversification among insects, particular emphasis on pollinator insects. However, support for coevolutionary insect-plant interactions is weak. Macroevolutionary studies of insect and plant diversities the hypothesis that diversified after peak diversity Early Cretaceous. Here, we used family-level fossil record insects as whole, families particular, estimate rates macroevolutionary history using Bayesian process-based approach. We found played dual changed through time, mitigating extinction Cretaceous promoting origination Cenozoic, which also recovered only. Although pollinated gymnosperms before angiosperm radiation, radiation new lineages began increased, particularly significant 50 Ma. global temperature, increases diversity, spore plants were strongly correlated rates, suggesting multiple drivers influenced arguing investigation different explanatory variables further studies.

Language: Английский

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Inferring the evolutionary history of the Sino-Himalayan biodiversity hotspot using a Bayesian birth–death skyline model

Geological Society London Special Publications, Journal Year: 2024, Volume and Issue: 549(1)

Published: April 17, 2024

The current status of the Sino-Himalayan region as a biodiversity hotspot, particularly for flora, has often been linked to uplift Sino-Tibetan Plateau and Himalayan Hengduan Mountains. However, relationship between topological development onset diversification is yet be confirmed. Here, we apply Bayesian phylodynamic methods large phylogeny angiosperm species from Sino-Himalayas infer changes in their rates evolution through time. We find strong evidence high Paleocene, late Miocene Pliocene, negative Quaternary driven by an increase extinction rates. Our analyses suggest that global palaeotemperatures are unlikely driving force these rate shifts. Instead, collision Indian continent with Eurasia coeval topographic change Sino-Himalayas, Grassland Expansion impact Pleistocene glaciations on this altitudinally variable may have also demonstrate influence choice times shape inferred piecewise-constant trajectories phylodynamics, advocate use prior information when making decision.

Language: Английский

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Mass extinctions and their rebounds: a macroevolutionary framework

Paleobiology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 14

Published: Jan. 21, 2025

Abstract Mass extinctions are natural experiments on the short- and long-term consequences of pushing biotas past breaking points, often with lasting effects structure function biodiversity. General properties mass extinctions—exceptionally severe, taxonomically broad, global losses taxa—are starting to come into focus through comparisons among dimensions biodiversity, including morphological, functional, phylogenetic diversity. Notably, functional diversity tends persist despite severe taxonomic diversity, whereas taxic morphological may or not be coupled. One biggest challenges in synthesizing extracting general these events has been that they driven by multiple, interacting pressures, taxa their traits vary events, making it difficult link single stressors specific traits. Ongoing improvements stratigraphic resolution for multiple clades will sharpen tests selectivity help isolate hitchhiking effects, whereby organismal carried differential survival extinction owing other higher-level attributes, such as geographic-range size. Direct comparative analyses across also clarify impacts particular drivers taxa, traits, morphologies. It is just filter deserves attention, longer-term impact derives part from ensuing rebounds. More work needed uncover biotic abiotic circumstances spur some re-diversification while relegating others marginal shares Combined insights filters rebounds bring a macroevolutionary view approaching biodiversity crisis Anthropocene, helping pinpoint clades, groups, morphologies most vulnerable failed

Language: Английский

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No phylogenetic evidence for angiosperm mass extinction at the Cretaceous–Palaeogene (K-Pg) boundary

Biology Letters, Journal Year: 2023, Volume and Issue: 19(9)

Published: Sept. 1, 2023

The Cretaceous-Palaeogene mass extinction event (K-Pg) witnessed upwards of 75% animal species going extinct, most notably among these are the non-avian dinosaurs. A major question in macroevolution is whether this influenced rise flowering plants (angiosperms). fossil record suggests that K-Pg had a strong regional impact on angiosperms with up to extinctions, but only minor rates lineages (families and orders). Phylogenetic evidence for angiosperm dynamics through time remains unexplored. By analysing two mega-phylogenies containing approximately 32 000-73 000 extant species, here we show relatively constant throughout geological no at boundary. Despite high species-level observed record, our results support macroevolutionary resilience via survival higher lineages.

Language: Английский

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Angiosperm flowers reached their highest morphological diversity early in their evolutionary history

New Phytologist, Journal Year: 2023, Volume and Issue: 241(3), P. 1348 - 1360

Published: Nov. 29, 2023

Summary Flowers are the complex and highly diverse reproductive structures of angiosperms. Because their role in sexual reproduction, evolution flowers is tightly linked to angiosperm speciation diversification. Accordingly, quantification floral morphological diversity (disparity) among subgroups through time may give important insights into evolutionary history angiosperms as a whole. Based on comprehensive dataset focusing 30 characters describing structure across angiosperms, we used 1201 extant 121 fossil measure disparity explore patterns lineages. We found that reached highest Early Cretaceous. However, decreasing toward present likely has not precluded innovation other traits at levels, which played key outstanding species richness. Angiosperms occupy specific regions theoretical morphospace, indicating only portion possible trait combinations observed nature. The ANA grade, magnoliids, early‐eudicot grade large areas morphospace (higher disparity), whereas nested groups narrower (lower disparity).

Language: Английский

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A critique of Thompson and Ramírez-Barahona (2023) or: how I learned to stop worrying and love the fossil record

Biology Letters, Journal Year: 2024, Volume and Issue: 20(8)

Published: Aug. 1, 2024

A recent study published in

Language: Английский

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Spores from the K–Pg boundary of the La Colonia Formation, Patagonia, Argentina

Review of Palaeobotany and Palynology, Journal Year: 2024, Volume and Issue: 328, P. 105159 - 105159

Published: July 20, 2024

Language: Английский

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A Critique of Thompson and Ramírez-Barahona (2023) or: How I Learned to Stop Worrying and Love the Fossil Record

Published: Jan. 25, 2024

Last year, a study published in Biology Letters by Thompson and Ramírez-Barahona (2023) argued that, according to analyses of diversification on two massive molecular phylogenies comprising thousands species, there is no evidence that angiosperms (i.e., flowering plants) were affected the Cretaceous-Paleogene mass extinction. Here I show these conclusions are flawed from both methodological philosophical perspectives. demonstrate methods used their possess statistical limitations strongly reduce power detect true extinction event using data similar those analyzed (2023). Additionally, use as springboard examine relationship between phylogenetic fossil studies.

Language: Английский

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Disparity of cycad leaves dispels the living fossil metaphor

Communications Biology, Journal Year: 2024, Volume and Issue: 7(1)

Published: March 14, 2024

Abstract The living fossil metaphor is tightly linked with the cycads. This group of gymnosperms supposed to be characterised by long-term morphological stasis, particularly after their peak diversity and disparity in Jurassic. However, no formal test this hypothesis exists. Here, we use a recent phylogenetic framework an improved character matrix reconstruct Disparity Through Time for cycad leaves using Principal Coordinate Analysis employing Pre-Ordination Ancestral State Reconstruction impact sampling on results. Our analysis shows that leaf morsphospace expanded up present, numerous shifts its general positioning, independently biases. Moreover, they also show Zamiaceae rapidly Early Cretaceous continued expand while now-extinct clades experienced slow contraction from Triassic. We rates evolution were constantly high Cretaceous, then slight decrease Paleogene, followed Neogene acceleration. These results much more dynamic history cycads, suggest ‘living fossil’ actually hindrance our understanding macroevolution.

Language: Английский

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The meaning of mass extinctions and what the fossil record tells us about angiosperm survival at K-Pg: a reply to Hagen (2024)

Biology Letters, Journal Year: 2024, Volume and Issue: 20(8)

Published: Aug. 1, 2024

Last year, we published research using phylogenetic comparative methods (PCMs) to reveal no evidence for elevated lineage-level extinction rates in angiosperms across K-Pg (Thompson JB, Ramírez-Barahona S. 2023 No angiosperm mass at the Cretaceous–Palaeogene (K-Pg) boundary. Biol. Lett. 19 , 20230314. ( https://doi.org/10.1098/rsbl.2023.0314 )), results that are step with global fossil record. In a critique of our paper (Hagen ER. 2024 A Thompson and (2023) or: how I learned stop worrying love 20 2020240039 https://doi.org/10.1098/rsbl.2024.0039 simulation work is presented argue erred methodological choices interpretations, should have deferred evidence. opinion, underlying this poor on simulations philosophical problems surrounding definition event, which leads incorrect interpretations both record PCMs. We further deferring one source favour other shuts door important evolutionary questions.

Language: Английский

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