Map of Lake Tahoe, USA, Crater Lake, USA and Lake Hövsgöl, Mongolia. L. HayfordBarbara M. CairesAndrea ChandraSudeep F. GirdnerScott 2015 <p>Solid circles indicate sampling locations in 2008 and 2009 for Lake Tahoe, 2009 for Crater Lake, and 1995–1997 for Lake Hövsgöl.</p>