![]() Studies have shown that lethal temperature for Yellow Perch range from 89⁰–93⁰ F (Hart 1952, McCormick 1976). The loggers were set to record water temperature four times a day (12:00 am, 06:00 am, 12:00 pm, 06:00 pm).ĭuring the summertime months (June–September) the Stone Mill Creek area showed noticeably cooler temperatures with an average monthly temperature ranging from 77.4⁰–79.0⁰ F, compared to 82.0⁰–85.3⁰ F in the main Dead Lakes section.įurthermore, in the main Dead Lakes section, 25% of summertime days (June–September) recorded temperature at or above 86.0⁰ F with a maximum recorded temperature of 90.9⁰ F (September 2015) whereas, Stone Mill Creek had a maximum recorded temperature of 83.8⁰ C (July 2015). Using a weight and rope, the temperature loggers were placed at or near the bottom of the lake and tethered to a cypress tree for easy retrieval. In 2015, biologists monitored water temperatures for 12 months in the Dead Lakes, to identify temperatures Yellow Perch experience throughout the year and temperature impacts of Stone Mill Creek.īiologists set temperature data loggers–one at the mouth of Stone Mill Creek and one in the main Dead Lakes section. Stone Mill Creek is a spring-fed creek that flows into West Arm Creek and ending in the main Dead Lakes section. In 20, biologists found high concentrations of Yellow Perch in the Stone Mill Creek section of the Dead Lakes. Prior studies have shown the importance water temperature has on Yellow Perch populations and with higher temperatures in the south east, the summer months can be stressful for the fish. In Florida, Yellow Perch are only known to exist in limited populations throughout the Apalachicola River watershed, with reproducing populations in Lake Seminole and the Dead Lakes, the southernmost known population in the United States.
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