How well do laboratory experiments explain field patterns of zooplankton emergence

摘要: SUMMARY 1. We conducted a laboratory experiment to explore potential mechanisms driving variation in zooplankton emergence from diapausing eggs observed Oneida Lake, NY, U.S.A. hypothesized that timing of ice-out (date thawing ice) between 1994 and 1995, which resulted photoperiod‐temperature cues, contributed the differences field patterns. Environmental chambers were used establish weekly combinations reproduced natural conditions Lake 1995. In addition, third treatment (‘dark’) exposed only changes temperature. recorded for 2.5 simulated ice-free seasons. 2. Nine cladoceran taxa found hatch, but Daphnia pulicaria large numbers. Hatching D. was throughout season two light treatments sporadically dark treatment. The early had highest emergence, followed by late treatments. Among taxa, there temporal segregation with five hatching weeks sampling during middle weeks. Alona hatched first year, earlier second year. 3. compared our results data obtained