TY - JOUR
T1 - A global synthesis of the effectiveness of sedimentation-enhancing strategies for river deltas and estuaries
AU - Cox, Jana R.
AU - Paauw, Mandy
AU - Nienhuis, Jaap H.
AU - Dunn, Frances E.
AU - van der Deijl, Eveline
AU - Esposito, Christopher
AU - Goichot, Marc
AU - Leuven, Jasper R.F.W.
AU - van Maren, Dirk S.
AU - More Authors, null
PY - 2022
Y1 - 2022
N2 - Deltas worldwide are at risk of elevation loss and drowning due to relative sea-level rise. Management strategies to restore or enhance sedimentation on delta plains, Sedimentation-Enhancing Strategies (hereafter SES), are now being pursued in many deltas but there has been limited cross-disciplinary and cross-delta review. Here we compare 21 existing and planned SES, synthesizing their physical characteristics, funding, governance arrangements, stakeholder engagement, process of implementation, environmental impact, land use change, and potential for upscaling. Strategies exist at various scales, from ~0.05 km2 - 500 km2. 79% of strategies are capable of outpacing high rates of sea-level rise. Cheaper strategies are limited to short term impacts and small spatial scales, while more expensive strategies can have longer lifetimes. Most strategies create wetlands and flood water storage. Some create opportunities for agriculture, aquaculture, housing, or recreational land use. Combinations of SES will likely be the most effective and sustainable method for maintaining elevation in river deltas.
AB - Deltas worldwide are at risk of elevation loss and drowning due to relative sea-level rise. Management strategies to restore or enhance sedimentation on delta plains, Sedimentation-Enhancing Strategies (hereafter SES), are now being pursued in many deltas but there has been limited cross-disciplinary and cross-delta review. Here we compare 21 existing and planned SES, synthesizing their physical characteristics, funding, governance arrangements, stakeholder engagement, process of implementation, environmental impact, land use change, and potential for upscaling. Strategies exist at various scales, from ~0.05 km2 - 500 km2. 79% of strategies are capable of outpacing high rates of sea-level rise. Cheaper strategies are limited to short term impacts and small spatial scales, while more expensive strategies can have longer lifetimes. Most strategies create wetlands and flood water storage. Some create opportunities for agriculture, aquaculture, housing, or recreational land use. Combinations of SES will likely be the most effective and sustainable method for maintaining elevation in river deltas.
KW - Delta sustainability
KW - Land gain
KW - River delta management
KW - River deltas
KW - Sea-level rise
KW - Sedimentation
UR - http://www.scopus.com/inward/record.url?scp=85130100588&partnerID=8YFLogxK
U2 - 10.1016/j.gloplacha.2022.103796
DO - 10.1016/j.gloplacha.2022.103796
M3 - Article
AN - SCOPUS:85130100588
SN - 0921-8181
VL - 214
JO - Global and Planetary Change
JF - Global and Planetary Change
M1 - 103796
ER -
