HOBBS, William O., Alexander P. WOLFE, William P. INSKEEP, Larry AMSKOLD, & Kurt O. KONHAUSER 2009 (Feb.) Epipelic diatoms from an extreme acid environment: Beowulf Spring, Yellowstone National Park, U.S.A. Beih. Nova Hedwigia 135: 71-83, 3 figs., 2 tables [Nitzschia cf. thermalis var. minor, Nitzschia ovalis, Pinnularia acoricola, Eunotia exigua] |