Overview

Large tracts of land at low lying elevation make deltas vulnerable to sea-level rise and other climate changes impacts. Deltas have some of the highest population densities in the world; in total with 500 million, often poor, residents. The adaptive strategies available to deltas residents (e.g. disaster risk reduction, land use management or polders) may not be adequate to cope with pervasive, systematic, or surprise changes associated with climate change. Hence large movements of deltaic people are often projected under climate change. DECCMA is an approximately 5 year long programme of applied research on the adaptation options, limits and potential in deltaic environments to current weather variability and extremes, as well as climate change.

Study Sites

Ghana (Volta delta)

India (Mahanadi delta)

Bangladesh and India (Ganges-Brahmaputra-Meghna)

DECCMA's aims are:

  1. To evaluate the effectiveness of adaptation options in deltas
  2. To assess migration as an adaptation in deltaic environments under a changing climate
  3. To deliver policy support to create the conditions for sustainable gender-sensitive adaptation

DECCMA's objectives are:

  1. To understand the governance mechanisms that promote or hinder migration of men and women in deltas
  2. To identify climate change impact hotspots in deltas where vulnerability will grow and adaptation will be needed
  3. To understand the conditions that promote migration and its outcomes, as well as gender-specific adaptation options for trapped populations, via surveys
  4. To understand how climate-change-driven global and national macro-economic processes impact on migration of men and women in deltas
  5. To produce an integrated systems-based bio-physical and socio-economic model to investigate potential future gendered migration under climate change
  6. To conceptualise and evaluate migration within a wide suite of potential adaptation options at both the household and delta level
  7. To identify feasible and desirable adaptation options and support implementation of stakeholder led gender-sensitive adaptation policy choices
Migration is already an established household adaptation to cope with environmental and economic change. This can be both a successful form of adaptation, increasing the resilience of the migrant household, and unsuccessful, perpetuating vulnerability in a new location with differential impacts on men and women.

The DECCMA project will analyse the impacts of climate change and other environmental drivers across contrasting deltas in Africa and Asia. Processes of migration will be analysed using survey, participatory research and economic methods. Potential migration of men and women will be contrasted with other adaptation approaches using a stakeholder-driven and co-produced integrated assessment approach.

DECCMA research will inform the following questions:

  • What is the current migration trend in the Ganges-Brahmaputra-Meghna, Volta and Mahanadi deltas?
  • What are the drivers of migration in these deltas today?
  • How might these drivers change in the future?
  • What are the current and potential adaptation options, including the role of migration?
  • Which adaptation options (planned and autonomous) are successful today and could be in the future?
  • What are the impacts of other adaptation options on migration?
The DECCMA project will analyse the impacts of climate change and other environmental drivers across contrasting deltas in Africa and Asia. Processes of migration will be analysed using survey, participatory research and economic methods. Potential migration of men and women will be contrasted with other adaptation approaches using a stakeholder-driven and co-produced integrated assessment approach.

Click on the individual Work Package in the diagram below to view more details. Work Packages WP1 WP2 WP3 WP4 WP5 WP6

 

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