Table 1 Description of the risk dimensions and how they were computed in this study
From: Riverine communities in the Central Amazon are largely subject to erosion and sedimentation risk
Dimensions of risk | Variable /Indicator | Description | Methods | Data source |
|---|---|---|---|---|
Hazard | Trend in open water area Percentage of open water (%) | Erosion processes: sedimentation (positive trend) and erosion (negative trend) | Remote sensing and GIS | Open water mask from Landsat satellite data20 |
Exposure | Population size (total number of people) | Population size in each community | Statistics and percentage calculation using GIS | Mamirauá Institute census73 |
Vulnerability | Distance to urban area (km) Distance to the nearest urban center (km) | Distance from the communities to the largest urban area in the region (Tefé) Distance to the nearest urban center | Cost path analysis95 | Mamirauá Institute census73 |
Number of past community migrations due to erosion/sedimentation processes (total number of community migrations) | Previous experience with the hazard | Statistics using GIS | Mamirauá Institute census73 | |
Socioeconomic data | Social Development Index based on thre dimensions: education, economic development and social organization | Statistics and calculation of percentage | Mamirauá Institute census73 | |
Number of women, children and elderly people in the communities (total number per community) | Total number of women, children and elderly people in the community | Statistics and percentage calculation using GIS | Mamirauá Institute census73 |
