Table 2.
Temporal overview of recorded temperatures 1955–2019 and their impact on snail survival
| Year | MMS, n | Number and proportion of MMSs having delivered the ATs required to sustain the continuous propagation of snail generations | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| < 1 | ≥ 1 | ≥ 2 | ≥ 3 | ≥ 4 | ≥ 5 | ≥ 6 | ≥ 7 | ≥ 8 | ≥ 9 | ||
| 1955 | 155 |
6 3.9% |
149 96.1% |
143 92.3% |
133 85.8% |
113 72.9% |
66 42.6% |
35 22.6% |
12 7.7% |
1 0.7% |
0 |
| 1965 | 233 |
17 7.3% |
216 92.7% |
209 89.7% |
193 82.8% |
166 71.2% |
92 39.5% |
56 24.0% |
25 10.7% |
5 2.2% |
1 0.4% |
| 1975 | 236 |
14 5.9% |
222 94.1% |
215 91.1% |
199 84.3% |
169 71.6% |
100 42.4% |
57 24.2% |
22 9.3% |
5 2.1% |
2 0.9% |
| 1985 | 236 |
12 5.8% |
224 94.9% |
216 91.5% |
198 83.9% |
169 71.6% |
100 42.4% |
54 22.9% |
19 8.1% |
5 2.1% |
2 0.9% |
| 1995 | 228 |
10 4.4% |
218 95.6% |
211 92.5% |
195 85.5% |
170 74.6% |
102 20.6% |
55 24.1% |
22 9.7% |
7 3.1% |
2 0.9% |
| 2005 | 228 |
8 3.5% |
220 96.5% |
211 92.5% |
202 88.6% |
180 79.0% |
136 60.0% |
70 30.7% |
38 16.7% |
8 3.5% |
3 1.3% |
| 2015 | 226 |
9 4.0% |
217 96.0% |
209 92.5% |
199 88.1% |
182 80.5% |
133 58.9% |
76 33.6% |
44 19.5% |
12 5.3% |
2 0.9% |
| 2019 | 197 |
10 5.1% |
187 94.9% |
180 91.4% |
172 87.3% |
152 77.2% |
117 59.4% |
57 28.9% |
33 16.8% |
11 5.6% |
1 0.5% |
MMS meteorological monitoring station, TA accumulated temperatures