Table 3. Geographic summary statistics for each estuary network.
Network | Primary Source of Stress | Number | Std. dist (km) | Sum area (ha) | Avg area (ha) | Propn. area | Propn. Sample |
1 | Agriculture | 6 | 153 | 1,837 | 306 | 0.3% | 4.3% |
2 | Development | 22 | 103 | 9,222 | 419 | 1.6% | 15.7% |
3 | All (moderate levels) | 35 | 608 | 378,638 | 10,818 | 65.0% | 25.0% |
4 | Shellfish aquaculture | 19 | 454 | 138,247 | 7,276 | 23.7% | 13.6% |
5,8,9 | Forestry/water qual. | 30 | 411 | 47,881 | 1,596 | 8.2% | 21.4% |
6 | Few (low levels) | 23 | 518 | 6,631 | 288 | 1.1% | 16.4% |
7 | Climate change | 5 | 8 | 10 | 2 | 0.0% | 3.6% |
Standard distance is a measure of the spatial dispersion of the network, lower values are compact, higher values are spread out. The proportion area is the total area of the network divided by the total area of all estuaries in the study. Proportion sample is the number of estuaries in the network divided by the total number in the study.