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Digestive contents and food webs record the advent of dinosaur supremacy.
Nature
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Department of Organismal Biology, Uppsala University, Uppsala, Sweden.
The early radiation of dinosaurs remains a complex and poorly understood evolutionary event. Here we use hundreds of fossils with direct evidence of feeding to compare trophic dynamics across five vertebrate assemblages that record this event in the Triassic-Jurassic succession of the Polish Basin (central Europe). Bromalites, fossil digestive products, increase in size and diversity across the interval, indicating the emergence of larger dinosaur faunas with new feeding patterns.
View Article and Find Full Text PDFThe neglected giant Tchen-Ngo Liou:The enlightenment of his dynamic geobotany theory to current studies in vegetation ecology and biodiversity.
Ying Yong Sheng Tai Xue Bao
September 2024
School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, China.
Prof. Tchen-Ngo Liou is one of the founders of China's botany, geobotany, and forest ecology. Theory of dynamic geobotany, established by Prof.
View Article and Find Full Text PDFSoil Fungal Community Diversity, Co-Occurrence Networks, and Assembly Processes under Diverse Forest Ecosystems.
Microorganisms
September 2024
Sichuan Academy of Giant Panda, Chengdu 610081, China.
Fungal communities are critical players in the biogeochemical soil processes of forest ecosystems. However, the factors driving their diversity and community assembly are still unclear. In the present study, five typical vegetation types of soil fungal communities in Liziping Nature Reserve, China, were investigated using fungal ITS sequences.
View Article and Find Full Text PDFConfounding giant right atrial mass.
Egypt Heart J
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Department of Cardiovasculer Surgery, Meram Faculty of Medicine Necmettin, Erbakan University, Konya, Turkey.
Background: Primary cardiac tumors are uncommon, with approximately 70-80% classified as benign. Myxomas constitute roughly half of all benign cardiac tumors, while cardiac hydatid cysts are exceptionally rare. Shortness of breath is a prominent symptom associated with these conditions.
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Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, CO, USA.
A key driver of the African savannah elephant population decline is the loss of habitat and associated human-elephant conflict. Elephant physiological responses to these pressures, however, are largely unknown. To address this knowledge gap, we evaluated faecal glucocorticoid metabolite (fGCM) concentrations as an indicator of adrenal activity and faecal thyroid metabolite (fT3) concentrations as an indicator of metabolic activity in relation to land use, livestock density, and human landscape modification, while controlling for the effects of seasonality and primary productivity (measured using the normalized difference vegetation index).
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