John Davidson

The Conservation Fund Freshwater Institute, 1098 Turner Road, Shepherdstown, WV 25443, USA

Evaluating Brook Trout Egg and Alevin Survival at Different Temperatures in Simulated Karst Environments with Marl Sedimentation

SEAFWA Journal Volume 10, March 2023

Brook trout (Salvelinus fontinalis) have been extirpated from many karst-geology streams in West Virginia; however, the causes are not fully understood. Specifically, the impact of calcareous precipitate (marl), which is common in hard-water environments, has not been evaluated as an im- pediment to juvenile survival. Accordingly, two lab-based studies were conducted to determine if brook trout egg and alevin survival is inhibited by marl. In the first study, three aeration treatments were applied to water from a limestone spring source (13ā€“14 C; ~300 mg Lā€“1...