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Benthic samples were collected to a depth of 2 cm. A liter of this material would comprise an area of approximately 0.05 m2. It is important to remember when interpreting graphs for benthos that only one benthic sample was collected for each station at each sample period. Overview of Invertebrate Sample Stations Invertebrate sample stations were established in the study area in June of 1993 (Figure 17). A total of 13 stations were sampled for invertebrates (Table 6). Communities represented by these stations are: 1) bulrush (3 stations); 2) open water- aquatic (3 stations); 3) alkali bulrush (3 stations); 4) riverine backwater (1 station); and 5) river (3 stations). Communities were sampled six times during 1993 on or about the dates of 11 June, 4 July, 19 July, 4 August, 24 August, and 25 September. Only one backwater station was sampled because it was the only one available in the study area. When stations went dry they were no longer sampled. Table 6. Station number, community type, number of sample periods, and comments for invertebrate stations sampled in 1993 Station Community Type Periods Sampled Comments E1 bulrush 3 dry on 4 August E1 open water 6 E1 alkali bulrush 3 dry 19 July - 24 August E2 bulrush 2 dry on 19 July E2 open water 6 E2 alkali bulrush 3 dry on 4 August E3 bulrush 1 too shallow 4 July through end of season E3 open water 6 E3 alkali bulrush 6 E6 backwater 5 not sampled 11 June E6 river 6 adjacent to E6 backwater E11 river 6 E16 river 6 33