摘要：Shoreline seining was completed in South Dakota monthly (May through October) during the day and night at Lake Kampeska (a basin with simple morphometry) in 1995 and 1997 and at Lake Enemy Swim (a complex basin) in 1996 and 1997. Within lake comparisons were made between median day and night catches. The few significant differences between night and day catches at Lake Kampeska likely were attributed to higher water turbidity. Richness and diversity values were similar between day and night seining at Lake Kampeska. Conversely, relative abundance and species diversity and richness were typically higher for nighttime samples from Lake Enemy Swim. Turbidity appeared to have the largest effect on seine catches in these glacial lakes. Thus, when sampling fishes with seines in clear glacial lakes, nighttime seining should be considered.
