16 research outputs found

    Coupling of palaeontological and neontological reef coral data improves forecasts of biodiversity responses under global climatic change

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    Occurrence data for modern and LIG reef corals, as well as the training data for ecological niche modelling. Training data is subsampled to 1.25° x 1.25° and clipped to cells with available environmental data

    Past East Asian monsoon evolution controlled by paleogeography, not CO2

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    The East Asian monsoon plays an integral role in human society, yet its geological history and controlling processes are poorly understood. Using a general circulation model and geological data, we explore the drivers controlling the evolution of the monsoon system over the past 150 million years. In contrast to previous work, we find that the monsoon is controlled primarily by changes in paleogeography, with little influence from atmospheric CO2. We associate increased precipitation since the Late Cretaceous with the gradual uplift of the Himalayan-Tibetan region, transitioning from an ITCZ-dominated monsoon to a sea breeze–dominated monsoon. The rising region acted as a mechanical barrier to cold and dry continental air advecting into the region, leading to increasing influence of moist air from the Indian Ocean/South China Sea. We show that, apart from a dry period in the middle Cretaceous, a monsoon system has existed in East Asia since at least the Early Cretaceous

    Duodenal Adenomas and Cancer in MUTYH-associated Polyposis: An International Cohort Study

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    Although duodenal adenomas and cancer appear to occur significantly less frequently in autosomal recessive MUTYH-associated polyposis (MAP) than in autosomal dominant familial adenomatous polyposis (FAP),1 current guidelines recommend similar endoscopic surveillance for both disorders.2-4 This involves gastro-duodenoscopy starting at 25 to 35 years of age and repeated at intervals determined by Spigelman staging based on the number, size, histological type and degree of dysplasia of adenomas, and by ampullary staging. Case reports of duodenal cancers in MAP suggest that they may develop in the absence of advanced Spigelman stage benign disease and even without coexisting adenomas.1 Recent molecular analyses suggest thatMAPduodenal adenomashave a higher mutational burden than FAP adenomas and are more likely to harbor oncogenic drivermutations, such as those in KRAS.5 These apparent differences in the biology and natural history of duodenal polyposis in FAP and MAP challenge the assumption that the same surveillance should be applied in both conditions

    Supplementary Material 1

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    Occurrence data for modern and LIG reef corals, as well as the training data for ecological niche modelling. Training data is subsampled to 1.25° x 1.25° and clipped to cells with available environmental data

    Supplementary Material 3

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    Sum of cells within 5° latitudinal bins for all model classes, binary thresholds and climate scenarios
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