McMurdo Dry Valleys LTER: Hyporheic diatom community assemblages from transects across Von Guerard Stream, Taylor Valley, Antarctica, January 2019

• Main Authors: McMurdo Dry Valleys LTER, Darling, Joshua, Heindel, Ruth, Singley, Joel, Bergstrom, Anna, McKnight, Diane
• Format: Dataset
• Language: English
• Published: Environmental Data Initiative 2020
• Subjects: McMurdo Dry Valleys; Taylor Valley; Von Guerard Stream; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.6073/pasta/f79bdbca0e3e97ef5f1b4007d2f008eb; https://portal.edirepository.org/nis/mapbrowse?packageid=knb-lter-mcm.9034.1

In this data package, we present diatom community assemblages from hyporheic sediments collected in January 2019 from six transects across Von Guerard Stream, Taylor Valley, Antarctica. These samples were collected to address questions about the retention and processing of particulate organic matter in the hyporheic zone of McMurdo Dry Valley streams. The six transects were located at pools, riffles, and meanders (three of each geomorphology type) along Von Guerard Stream and extended across the stream channel to the edges of the wetted zone, ranging from 6.6 to 13.6 m in length. At each sampling location, we collected subsurface sediment sample that was preserved in formalin directly after sample collection. We characterized diatom assemblages by counting a total of 300 diatom valves from each preserved diatom sample. This data package is associated with a complementary data package that contains hyporheic sediment chemistry for the same samples.