quantitative analyses of periphyton biomass and ... - SUNY Oneonta

overall seasonal average of T-P0 4 was approximately 2.5 times greater in the
urban stream (.256 mg/I) than in the agricultural (.057 mg/I) or forested streams
(.035 mg/I). The highest seasonal averages of N0 3 were during winter in the
agricultural streams (1.96 mg/I) and in the forested streams the same N0 3
average was measured during summer, winter, and spring (.54 mg/I). In the
urban stream, the highest seasonal average of N0 3 was during summer (.49
mg/I). The lowest seasonal averages of N0 3 were during summer in the
agricultural streams (.70 mg/I) and during fall in the forested streams (.21 mg/I)
and the urban stream (.24 mg/I). The overall seasonal average of N0 3 was
highest in the agricultural streams (1.22 mg/I) which was 2.5 times greater than
the value in the forested streams (.46 mg/I) and the urban stream (.35 mg/I).
Table 3c shows that the highest seasonal average of CI in the
agricultural (10.69 mg/l) and forested streams (8.06 mg/I) occur-red in fall. In the
urban stream, the highest seasonal average of CI occurred in winter (87.71
mg/I). The lowest seasonal averages of CI occurred in spring for all the
characterized streams; agricultural 5.69 mg/I, forested 4.76 mg/I, and urban
16.91 mg/1. The overall seasonal average of CI in the urban stream (38.82 mg/I)
was approximately five times greater than the overall seasonal average of CI in
the agricultural (7.77 mg/I) and forested streams (6.27 mg/I). Seasonal turbidity
averages in the agricultural streams (20.87 ntu), forested streams (21.43 ntu),
and the urban stream (815.10 ntu) were highest during summer and lowest
during the fall (9.92 ntu, 2.49 ntu, and 78.82 ntu, respectively). The overall
seasonal average of TRB in the urban stream (306.09 ntu) was approximately
20 times greater than the overall seasonal averages in the agricultural (15.58
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