Profiling risk and sustainability in coastal deltas of the world

TLDR

Deltas are growing centers of risk, with population growth, urbanization, and rising sea levels increasing danger for residents, and future resilience depends on socioeconomic and geophysical factors, though high‑GDP deltas may initially be more resilient but short‑term policies risk unsustainability without long‑term investment. The study examined 48 deltas worldwide to assess changes in regional vulnerability, as discussed in the Perspective by Temmerman. Tessler et al.

Abstract

Deltas are growing centers of risk Population growth, urbanization, and rising sea levels are placing populations living in delta regions under increased risk. The future resiliency and potential for adaptation by these populations depend on a number of socioeconomic and geophysical factors. Tessler et al. examined 48 deltas from around the globe to assess changes in regional vulnerability (see the Perspective by Temmerman). Some deltas in countries with a high gross domestic product will be initially more resilient to these changes, because they can perform expensive maintenance on infrastructure. However, short-term policies will become unsustainable if unaccompanied by long-term investments in all delta regions. Science , this issue p. 638 ; see also p. 588