DORSET OTTER GROUP
Annual RESULTS (2003-2004) |
| | | No. Surveyed | Positive | Negative | % Positive |
| River Avon |
Spring 03 |
15 |
2 |
13 |
13.3 |
| Summer 03 |
9 |
1 |
8 |
11.1 |
| Autumn 03 |
14 |
5 |
9 |
38.5 |
| Winter 04 |
15 |
1 |
14 |
6.7 |
| Total |
53 |
8 |
44 |
15.1 |
| River Axe |
Spring 03 |
4 |
3 |
1 |
75 |
| Summer 03 |
7 |
1 |
6 |
14.3 |
| Autumn 03 |
3 |
2 |
1 |
66.7 |
| Winter 04 |
20 |
11 |
9 |
55 |
| Total |
34 |
17 |
17 |
50 |
| River Frome |
Spring 03 |
38 |
11 |
27 |
28.9 |
| Summer 03 |
28 |
7 |
21 |
25 |
| Autumn 03 |
37 |
12 |
25 |
32.4 |
| Winter 04 |
41 |
10 |
31 |
24 |
| Total |
144 |
40 |
104 |
27.8 |
| River Piddle |
Spring 03 |
23 |
6 |
17 |
26.1 |
| Summer 03 |
26 |
4 |
22 |
15.4 |
| Autumn 03 |
26 |
4 |
22 |
15.4 |
| Winter 04 |
25 |
5 |
20 |
20 |
| Total |
100 |
19 |
81 |
19 |
| Poole Harbour |
Spring 03 |
3 |
0 |
3 |
0 |
| Summer 03 |
5 |
1 |
4 |
20 |
| Autumn 03 |
11 |
0 |
11 |
0 |
| Winter 04 |
15 |
1 |
14 |
.6.7 |
| Total |
34 |
2 |
32 |
5.9 |
| Upper Stour |
Spring 03 |
55 |
22 |
33 |
40 |
| Summer 03 |
50 |
15 |
35 |
30 |
| Autumn 03 |
51 |
18 |
34 |
35.3 |
| Winter 04 |
56 |
14 |
42 |
25 |
| Total |
212 |
69 |
144 |
32.5 |
| Lower Stour |
Spring 03 |
63 |
16 |
47 |
25.4 |
| Summer 03 |
56 |
12 |
44 |
21.4 |
| Autumn 03 |
61 |
14 |
47 |
23 |
| Winter 04 |
59 |
10 |
49 |
16.9 |
| Total |
239 |
52 |
187 |
21.8 |
| West Dorset Rivers |
Spring 03 |
42 |
23 |
19 |
54.8 |
| Summer 03 |
28 |
12 |
16 |
42.9 |
| Autumn 03 |
32 |
13 |
19 |
40.6 |
| Winter 04 |
32 |
11 |
21 |
34.4 |
| Total |
134 |
59 |
75 |
44 |
| River Wey and the Fleet |
Spring 03 |
8 |
1 |
7 |
12.5 |
| Summer 03 |
8 |
1 |
7 |
12.5 |
| Autumn 03 |
10 |
1 |
9 |
10 |
| Winter 04 |
14 |
2 |
12 |
14.3 |
| Total |
40 |
5 |
35 |
12.5 |
| River Yeo |
Spring 03 |
15 |
10 |
5 |
66.7. |
| Summer 03 |
13 |
5 |
8 |
38.5 |
| Autumn 03 |
8 |
4 |
4 |
50 |
| Winter 04 |
11 |
4 |
7 |
36.4 |
| Total |
47 |
23 |
24 |
48.9 |
| TOTAL | |
1037 |
294 |
743 |
28.4 |
|
