Summary of Daphnia magna survival (in percent) from water samples collected from the Grassland Bypass Project's monitoring site between 1996 and 2001.  Statistically significant reduced responses (P<0.05) are indicated with an asterisk.  Statistics were computed between all site means and the DMC ambient water sample.  No statistics were computed between sampling dates.  Results are for seven day test.  (Key at bottom of table.)

Date Site Location
B C D F DMC Laboratory Control
10/96 90 100 100 100 100 70
11/96 100 90 90 100 100 100
12/96 100 80 80 100 100 100
1/97 100 90 100 100 100 100
2/97 100 100 100 100 100 100
3/97 100 90 90 80 100 50
4/97 80 90 100 90 90 50
5/97 90 90 90 80 90 30
6/97 90 100 70 100 80 90
7/97 90 90 100 100 100 90
8/97 90 100 100 100 80 90
9/97 90 100 100 100 100 80
10/97 80 90 100 90 100 90
11/97 100 80 100 100 100 0
12/97 100 100 90 80 100 80
1/98 80 90 100 100 100 0
2/98 80 80 100 90 501 0
3/98 100 90 100 100 100 0
4/98 100 100 90 100 100 0
5/98 100 100 90 100 100 40
6/98 90 100 75 100 90 0
7/98 70 90 100 90 90 70
8/98 100 100 100 90 90 100
9/98 80 100 90 100 80 100
10/98 80 90 70 70 90 80
11/98 100 80 90 100 90 90
12/98 100 100 100 100 80 90
1/99 100 100 100 100 100 100
2/99 100 100 90 90 80 90
3/99 100 90 90 100 80 90
4/99 90 100 100 100 100 100
5/99 100 90 90 100 100 100
6/99 100 80 90 100 90 90
7/99 90 100 80 90 501 90
8/99 100 100 100 100 90 80
9/99 100 100 100 80 100 80
10/99 100 100 100 100 100 80
11/99 100 100 100 100 90 100
12/99 90 100 100 100 90 90
1/00 100 100 100 100 100 100
2/00 90 90 70 70 80 100
3/00 90 90 90 90 90 100
4/00 80 100 90 90 80 100
5/00 100 100 100 100 100 90
6/00 80 100 100 90 100 90
7/00 100 100 100 100 90 90
8/00 90 100 90 100 90 90
9/00 90 90 90 100 100 100
10/00 80 80 60* 80 80 70
11/00 100 100 100 100 90 100
12/00 100 80 80 100 100 60*
1/01 90 70* 100 100 90 80
2/01 100 100 90 100 90 100
3/01 100 100 90 90 90 90
4/01 100 100 100 100 89 89
5/01 0** 100 100 100 70 100
6/01 50* 70 70 90 100 100
7/01 100 100 60* 80 90 90
8/01 50* 100 30* 100 90 90
9/01 80 100 90 100 90 80

 

Key
NT = Not tested
"-" = Future sample
DMC=Delta Mendota
"*" = Statistically significant                                                                                                                                                  "**" = Fungal growth observed on test water

Footnotes
1.  DMC water failed to meet the survival (>80%) acceptability criteria.

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