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Title
Estimating biodiversity across the tree of life on Mount Everest’s southern flank with environmental DNA
Author(s)
Lim, Marisa C.W.; Seimon, Anton; Nightingale, Batya; Xu, Charles C.Y.; Halloy, Stephan R.P.; Solon, Adam J.; Dragone, Nicholas B.; Schmidt, Steven K.; Tait, Alex; Elvin, Sandra; Elmore, Aurora C.; Seimon, Tracie A.
Published
2022
Publisher
iScience
Published Version DOI
https://doi.org/10.1016/j.isci.2022.104848
Abstract
Species composition in high-alpine ecosystems is a useful indicator for monitoring climatic and environmental changes at the upper limits of habitable environments. We used environmental DNA (eDNA) analysis to document the breadth of high-alpine biodiversity present on Earth’s highest mountain, Mt. Everest (8,849 m a.s.l.) in Nepal’s Khumbu region. In April-May 2019, we collected eDNA from ten ponds and streams between 4,500 m and 5,500 m. Using multiple sequencing and bioinformatic approaches, we identified taxa from 36 phyla and 187 potential orders across the Tree of Life in Mt. Everest’s high-alpine and aeolian ecosystem. These organisms, all recorded above 4,500 m—an elevational belt comprising <3% of Earth’s land surface—represents ∼16% of global taxonomic order estimates. Our eDNA inventory will aid future high-Himalayan biomonitoring and retrospective molecular studies to assess changes over time as climate-driven warming, glacial melt, and anthropogenic influences reshape this rapidly transforming world-renowned ecosystem.
Keywords
ecology; environmental biotechnology; bioinformatics
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PUB35689