- Key to Common Plankton Animals of Grinnell Waters (Plankton_Key.pdf)
- Key to the Common Macroscopic Arthropods of Local Lakes (Arthropod_Key.pdf)
- IOWATER Benthic Macroinvertebrate Key
Class Field Labs
Biology 201 Field Laboratory (Year(s) unknown).
This field lab introduced students to techniques of limnology by preparing an environemtal profile of Perry Pond and comparing it to the last profile compiled in 1980. The lab description (on file with the CERA Manager) includes:
Fish catches: Spring 1973, Fall 1973, Spring 1974, Spring 1976, Spring 1979, Fall 1980.
Invertebrate fauna: Plankton sampled using plankton nets and counting using sedgwich rafter slides; benthic fauna sampled using Peterson dredge and hand marginal samples over meter square areas; data available for 1979.
Data: Average total organisms per collecting group;
Spring 1976, Fall 1978, Fall 1979;
Categories include producers, zooplankton, plankton feeders, benthic carnivores, benthic omnivores.