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    Controlling biodiversity impacts of future global hydropower reservoirs by strategic site selection

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    Differential longitudinal establishment of human fecal bacterial communities in germ-free porcine and murine models

    Identifying core microbiotas in the human donors
    To compare the establishment of human fecal bacterial communities in HMA mice and piglets, we inoculated GF mice and piglets maintained in gnotobiotic isolators with fecal matter from four separate human donors. The donors selected had diverse microbial communities (Fig. 1) and represented different stages of human development (see “Methods” for donor information). All animals in a given isolator (for both mice and piglets) were inoculated with the inocula obtained from a single donor. Both recipient species of animals were inoculated twice during the study—the initial round of inoculations were performed after weaning and the second round of inoculations occurred two weeks after the first round of inoculations. All inocula were prepared at the same time under the same conditions and both mice and piglets were fed the exact same sterile solid diet.
    Fig. 1: Box-whisker plots comparing the alpha diversity of the inoculum aliquots among the different donors using the Shannon index.

    Statistical comparisons were performed using the Wilcoxon rank-sum test. Boxes with different letters indicate statistically significant differences (p  More

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