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ABSTRACT
Investigation of anthropogenic fragmentation edge effects in Great Lakes fringing marshes necessitated the development of a high-intensity light source for quatrefoil light traps that would also be energy-efficient, consistent, and durable enough to withstand constant battering within these dynamic systems. Twenty bright light-emitting diode (LED) units were constructed using low-cost materials and deployed in quatrefoil light traps for overnight sampling periods from mid-May to early-July 2005. All total, 4,803 larval fishes comprising at least 18 taxa were attracted to the 36,000-mcd, white LED light units during 165 trap-nights. Additionally, 146,061 aquatic macroinvertebrates comprising 42 families were caught. The LED light units were energy-efficient and problem-free.
