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EutherianCoP. An integrated biotic and climate database for conservation paleobiology based on eutherian mammals.
Sci Data
January 2025
DiSTAR, University of Naples "Federico II", 80126, via Vicinale Cupa Cintia 26, Naples, Italy.
We present a new database, EutherianCoP, of fossil mammals which lived globally from the Late Pleistocene to the Holocene. The database includes 13,972 fossil occurrences of 786 extant or recently extinct placental mammal species, plus 155,198 current occurrences for those of them which survived to the present. The occurrences are correlated with radiometric age information.
View Article and Find Full Text PDFNew Re-Os Geochronological Data from the Upper Doushantuo Formation: Age Constraint on the Shuram Excursion and Implication for the Ediacaran Fluctuated Continental Weathering.
ACS Omega
December 2024
Hunan Provincial Key Laboratory of Geochemical Processes and Resource Environmental Effects, Changsha, Hunan 410014, China.
The largest negative carbon-isotope excursion in geological history has been reported by several studies of the upper Doushantuo Formation of South China, which has been correlated to the middle Ediacaran-Shuram excursion (SE). Due to a scarcity of radiometric age constraints on the excursion in South China, however, global correlations and comparisons of this event remain a debate. Here, we present Re-Os and carbon isotope data on organic-rich sediments obtained from a drill-core sample in the Chengkou area, the northeastern margin of the Yangtze Platform, and South China.
View Article and Find Full Text PDFNocturnal camouflage through background matching against moonlight.
Proc Natl Acad Sci U S A
January 2025
Estación Biológica de Doñana, Department of Ecology and Evolution, Consejo Superior de Investigaciones Científicas (CSIC), Sevilla E-41092, Spain.
Camouflage is often considered a daytime phenomenon based on light and shade. Nocturnal camouflage can also occur, but its mechanistic basis remains unclear. Here, we analyze the conditions for background matching (BM) of avian predators against the night sky.
View Article and Find Full Text PDFMulticentennial cycles in continental demography synchronous with solar activity and climate stability.
Nat Commun
November 2024
Leibniz-Zentrum für Archäologie, 55116, Mainz, Germany.
Human population dynamics and their drivers are not well understood, especially over the long term and on large scales. Here, we estimate demographic growth trajectories from 9 to 3 ka BP across the entire globe by employing summed probability distributions of radiocarbon dates. Our reconstruction reveals multicentennial growth cycles on all six inhabited continents, which exhibited matching dominant frequencies and phase relations.
View Article and Find Full Text PDFQuantitative and Rapid In Vivo Imaging of Human Lenticular Fluorescence.
Invest Ophthalmol Vis Sci
November 2024
Department of Mechanical Engineering, University of Michigan, Michigan, United States.
Purpose: To quantitatively investigate the chemical origins of near-UV excited fluorescence in the crystalline lens, and demonstrate the potential usefulness of a rapid and noninvasive diagnostic approach for screening and monitoring of lens damage.
Methods: Anterior segment UV fluorescence imaging was applied to a population of 30 healthy adults, ages 18 to 64 years. Absolute fluorescence intensities and intensity ratios were compared across the population as a function of age.
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