Fish kills across Ohio are likely after a long winter - Outdoor News - April 2014: "Columbus — The Ohio DNR is reminding people that fish kills may be common in ponds and small lakes as the ice and snow of the past few months gives way to spring.
Winter fish die-offs caused by long periods of heavy ice and snow cover on small waters are referred to as winterkills. Winterkill is caused when persistent ice forms a surface barrier between the water and air that prevents circulation of oxygen and blocks sunlight. If these conditions continue long enough, the oxygen fish need to survive may be depleted and result in some or all of the fish suffocating."
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