waters
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Earth
Guardians of the beach: How hidden microbes protect coastal waters amid climate change
Pore water samples were collected from a high-energy beach subsurface estuary in Stinson Beach, California, USA, over a 2-week spring tidal transition period during both the wet and dry seasons. Changes in microbial community composition analyzed by V4 16S rRNA gene sequencing were contextualized by extensive hydrological and physicochemical measurements. The vertical depth structure of the assemblage remained consistent throughout…
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Biology
Waterfall Bluff paleoenvironmental survey reveals leopard seals far from Antarctic waters
Worn Leopard Seal Teeth (#CN47208, Lot 303). Credit: Sandy Oster Waterfall Bluff Rock Shelter (WB), Eastern Cape Province (ECP), South Africa, has sustained and continuous human presence spanning from Late Marine Isotope Stage 3 (ca. 39ka to 29ka) to mid-Holocene (ca. 8ka). Contains archaeological deposits indicating occupation. The first leopard seal (Hydrurga leptonyx) specimens from Pleistocene and Holocene zooarchaeological assemblages…
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