Table 3. Summary of lake habitat for the three ecoregions for selected explanatory variables. Means include both Common Loon nest presence and absence lakes.
| |
| |
|
Habitat Variable |
Ecoregion |
Mean |
SE |
Min |
Max |
| |
|
Lake area (ha) |
1
2
3 |
137
96
303 |
0.19
0.10
0.12 |
10
10
12 |
3262
1819
20,128 |
|
|
|
|
|
|
|
|
Lake perimeter (km) |
1
2
3 |
13
18
42 |
0.13
0.07
0.08 |
0.19
0.48
0.15 |
25,704
8710
3,019,995 |
|
|
|
|
|
|
|
|
Lake maximum depth (m) |
1
2
3 |
10.1
9.5
12.1 |
1.42
0.80
0.87 |
1.3
1.1
1.5 |
49.7
55.5
54.9 |
|
|
|
|
|
|
|
|
Islands (number/lake) |
1
2
3 |
2
1
4 |
0.93
0.25
1.21 |
0
0
0 |
51
17
128 |
|
|
|
|
|
|
|
|
Elevation (m) |
1
2
3 |
465
330
145 |
59.4
28.9
20.7 |
155
113
5 |
728
722
601 |
|
|
|
|
|
|
|
|
Lake flushing rate (number of turnovers/yr) |
1
2
3 |
21.3
10.0
34.1 |
7.7
2.2
7.7 |
0.3
0.2
0.2 |
267
176
504 |
|
|
|
|
|
|
|
|
Water Clarity: Secchi depth(m) |
1
2
3 |
3.1
3.8
4.1 |
0.22
0.20
0.18 |
0.9
0.8
0.9 |
9.7
11.6
10.2 |
|
|
|
|
|
|
|
|
Total phosphorous (mg/L) |
1
2
3 |
0.012
0.012
0.012 |
<0.001
0.001
<0.001 |
0.003
0.001
0.001 |
0.038
0.059
0.052 |
|
|
|
|
|
|
|
|
Conductivity (µmhos/cm) |
1
2
3 |
33.92
48.21
69.05 |
2.71
2.99
4.77 |
15.10
16.51
16.64 |
112.60
182.70
306.00 |
|
|
|
|
|
|
|
|
Distance to loon lake (km) |
1
2
3 |
2.5
3.2
3.6 |
0.35
0.26
0.46 |
0.01
0.01
0.01 |
13.6
17.4
28.7 |
|
|
|
|
|
|
|
|
Distance to community center (km) |
1
2
3 |
8.5
2.5
2.9 |
0.75
0.02
0.23 |
0.01
0.01
0.01 |
24.2
6.6
21.3 |
|
| |
|