Spatial and temporal scales

Competing spatial claims in delta's can be related to various spatial scales, for instance:

• Local 'production plot' scale: spatial concessions are given for specific species. This limits the possibilities for up scaling.
• Water system scale Industries and households / local communities may introduce technology for (internal) water recycling;
• Multi-sourcing: other local sources of fresh water may be used, for instance effluents of nearby wastewater treatment plants. Another option is storage(buffering) and transport of redundant fresh water from precipitation. These steps involve various stakeholders and adaptation of spatial planning.

Competing spatial claims in delta's also has various temporal scales, for instance:

• Internal changes with few stakeholder can be done within several months or years;
• Changes involving spatial planning or even cross-border collaborations are likely to take more than a decade;
• Water stress might increase as a result of climate change and increased salinization in the course of decades