ORCID Profile
0000-0002-4989-5904
Current Organisation
Friedrich-Alexander-Universität Erlangen-Nürnberg
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Publisher: Springer Science and Business Media LLC
Date: 27-07-2023
DOI: 10.1038/S41559-023-02128-3
Abstract: Estimates of deep-time bio ersity typically rely on statistical methods to mitigate the impacts of s ling biases in the fossil record. However, these methods are limited by the spatial and temporal scale of the underlying data. Here we use a spatially explicit mechanistic model, based on neutral theory, to test hypotheses of early tetrapod ersity change during the late Carboniferous and early Permian, critical intervals for the ersification of vertebrate life on land. Our simulations suggest that apparent increases in early tetrapod ersity were not driven by local endemism following the ‘Carboniferous rainforest collapse’. Instead, changes in face-value ersity can be explained by variation in s ling intensity through time. Our results further demonstrate the importance of accounting for s ling biases in analyses of the fossil record and highlight the vast potential of mechanistic models, including neutral models, for testing hypotheses in palaeobiology.
Publisher: Cold Spring Harbor Laboratory
Date: 10-02-2022
DOI: 10.1101/2022.02.08.476633
Abstract: Estimates of deep-time bio ersity typically rely on statistical methods to mitigate the impacts of s ling biases in the fossil record. However, these methods are limited by the spatial and temporal scale of the underlying data. Here we use a spatially explicit mechanistic model, based on neutral theory, to test hypotheses of early tetrapod ersity change during the late Carboniferous and early Permian, critical intervals for the ersification of vertebrate life on land. Our neutral simulations suggest, in contrast to previous studies, that increases in early tetrapod ersity were not driven by local endemism following the ‘Carboniferous Rainforest Collapse’. We show that apparent changes in face-value ersity can instead be explained by variation in s ling intensity through time. Our results further demonstrate the importance of accounting for s ling biases in analyses of the fossil record and demonstrate the vast potential of mechanistic models, including neutral models, for testing hypotheses in palaeobiology.
Publisher: California Digital Library (CDL)
Date: 05-06-2023
DOI: 10.32942/X2NS3K
Abstract: Scientific knowledge is produced in multiple languages but is predominantly published in English. This academic publishing practice creates a language barrier to the generation and transfer of scientific knowledge between communities with erse linguistic backgrounds, hindering the ability of scholars and communities to address global challenges and achieve ersity and equity in science, technology, engineering, and mathematics (STEM). To overcome those barriers, publishers and journals should provide a fair system that supports non-native English speakers and disseminates knowledge across the globe. We surveyed policies of 736 journals in biological sciences to assess their linguistic inclusivity, identify predictors of inclusivity, and propose actions to overcome language barriers in academic publishing.
Publisher: Springer Science and Business Media LLC
Date: 18-02-2019
DOI: 10.1038/S41559-019-0811-8
Abstract: The fossil record provides one of the strongest tests of the hypothesis that ersity within local communities is constrained over geological timescales. Constraints to ersity are particularly controversial in modern terrestrial ecosystems, yet long-term patterns are poorly understood. Here we document patterns of local richness in Phanerozoic terrestrial tetrapods using a global data set comprising 145,332 taxon occurrences from 27,531 collections. We show that the local richness of non-flying terrestrial tetrapods has risen asymptotically since their initial colonization of land, increasing at most threefold over the last 300 million years. Statistical comparisons support phase-shift models, with most increases in local richness occurring: (1) during the colonization of land by vertebrates, concluding by the late Carboniferous and (2) across the Cretaceous/Paleogene boundary. In idual groups, such as mammals, lepidosaurs and dinosaurs also experienced early increases followed by periods of stasis often lasting tens of millions of years. Mammal local richness abruptly tripled across the Cretaceous/Paleogene boundary, but did not increase over the next 66 million years. These patterns are consistent with the hypothesis that ersity is constrained at the local-community scale.
Publisher: The Royal Society
Date: 08-04-2020
Abstract: There is no consensus about how terrestrial bio ersity was assembled through deep time, and in particular whether it has risen exponentially over the Phanerozoic. Using a database of 60 859 fossil occurrences, we show that the spatial extent of the worldwide terrestrial tetrapod fossil record itself expands exponentially through the Phanerozoic. Changes in spatial s ling explain up to 67% of the change in known fossil species counts, and these changes are decoupled from variation in habitable land area that existed through time. Spatial s ling therefore represents a real and profound s ling bias that cannot be explained as redundancy. To address this bias, we estimate terrestrial tetrapod ersity for palaeogeographical regions of approximately equal size. We find that regional-scale ersity was constrained over timespans of tens to hundreds of millions of years, and similar patterns are recovered for major subgroups, such as dinosaurs, mammals and squamates. Although the Cretaceous/Palaeogene mass extinction catalysed an abrupt two- to three-fold increase in regional ersity 66 million years ago, no further increases occurred, and recent levels of regional ersity do not exceed those of the Palaeogene. These results parallel those recovered in analyses of local community-level richness. Taken together, our findings strongly contradict past studies that suggested unbounded ersity increases at local and regional scales over the last 100 million years.
Location: No location found
No related grants have been discovered for Emma Dunne.