Fig. 1
From: Viral activity in lake analogs of anoxic early Earth oceans
Sampling sites and euxinic lake profiles. a Geographical location of lakes sampled in this study: Mahoney Lake (49°17′19″ N, 119° 34′58″ W), Lime Blue Lake (48°34′01″ N, 119° 36′45″ W), and Poison Lake (48°32′05″ N, 119° 34′36″ W). b A vertical profile of the three lakes, including dissolved oxygen (DO), specific conductivity, and Photosynthetically Active Radiation (PAR). Horizontal lines indicate the sampling depth for the mixolimnion, microbial plate, and monimolimnion at each lake. c Visual coloration of filters from the mixolimnion, microbial plate, and monimolimnion samples from Mahoney Lake