Table 2.
Population Estimates of Riffle Fishes per 100 Square Feet in the Lower Blue River in
1986, 1995, 1999, 200 and 2001.
|
Year |
1986 |
1995 |
1999 |
2000 |
2001 |
|
Total Number |
28.8 |
20.87 |
19.7 |
14.3 |
28.2 |
|
Estimated Number |
37.55 |
26.5 |
28.84 |
15 |
30.33 |
|
Banded Darter |
7.77 |
5.93 |
3.51 |
4.89 |
3.56 |
|
Spotted Darter |
3.11 |
9.79 |
8.97 |
1.8 |
7.83 |
|
Bluebreast Darter |
5.77 |
1.08 |
0.91 |
0.29 |
0.25 |
|
Rainbow Darter |
0.22 |
1.19 |
0.22 |
0.9 |
10.33 |
|
Greenside Darter |
2.44 |
0 |
0.59 |
1.3 |
6.40 |
1986 collection sites--Wyandotte Lake, Wyandotte Riffles, Above Harrison
Spring, 0.9 miles from Rothrock's Dam. The Rothrock's Dam collection site was
moved downstream because Rothrock's Dam had been demolished.
1995 collection sites--Wyandotte Lake, Wyandotte Riffles, White Cloud, Above
Harrison Spring, Rothrock's Dam. Sand and sediment at Rothrock's Dam had been
washed downstream.
1999 collection sites--Stagestop Campground, White Cloud, Above Harrison Spring,
Rothrock's Dam, Milltown, Fredericksburg, Below Beck's Mill. (Beck's Mill is not
included in the above analysis. It is above the distribution of spotted
darters.)
2000 and 2001 collection sites—White Cloud below dam, Rothrock’s Dam above dam
and Milltown below dam.