@article{fdi:010076602, title = {{M}angroves and shoreline erosion in the {M}ekong {R}iver delta, {V}iet {N}am}, author = {{B}esset, {M}. and {G}ratiot, {N}icolas and {A}nthony, {E}. {J}. and {B}ouchette, {F}. and {G}oichot, {M}. and {M}archesiello, {P}atrick}, editor = {}, language = {{ENG}}, abstract = {{T}he question of the rampant erosion of the shorelines rimming the {M}ekong {R}iver delta has assumed increasing importance over the last few years. {A}mong issues pertinent to this question is how it is related to mangroves. {U}sing high-resolution satellite images, we compared the width of the mangrove belt fringing the shoreline in 2012 to shoreline change (advance, retreat) between 2003 and 2012 for 3687 cross-shore transects, spaced 100 m apart, and thus covering nearly 370 km of delta shoreline bearing mangroves. {T}he results show no significant relationships. {W}e infer from this that, once erosion sets in following sustained deficient mud supply to the coast, the rate of shoreline change is independent of the width of the mangrove belt. {N}umerous studies have shown that: (1) mangroves promote coastal accretion where fine-grained sediment supply is adequate, (2) a large and healthy belt of fringing mangroves can efficiently protect a shoreline by inducing more efficient dissipation of wave energy than a narrower fringe, and (3) mangrove removal contributes to the aggravation of ongoing shoreline erosion. {W}e fully concur, but draw attention to the fact that mangroves cannot accomplish their land-building and coastal protection roles under conditions of a failing sediment supply and prevailing erosion. {I}gnoring these overarching conditions implies that high expectations from mangroves in protecting and/or stabilizing the {M}ekong delta shoreline, and eroding shorelines elsewhere, will meet with disappointment. {A}mong these false expectations are: (1) a large and healthy mangrove fringe is sufficient to stabilize the (eroding) shoreline, (2) a reduction in the width of a large mangrove fringe to the benefit of other activities, such as shrimp-farming, is not deleterious to the shoreline position, and (3) the effects of human-induced reductions in sediment supply to the coast can be offset by a large belt of fringing mangroves.}, keywords = {{M}angroves ; {M}ekong river delta ; {S}horeline erosion ; {C}oastal squeeze ; {S}ediment supply ; {VIET} {NAM} ; {MEKONG} {DELTA}}, booktitle = {}, journal = {{E}stuarine {C}oastal and {S}helf {S}cience}, volume = {226}, numero = {}, pages = {106263 [9 ]}, ISSN = {0272-7714}, year = {2019}, DOI = {10.1016/j.ecss.2019.106263}, URL = {https://www.documentation.ird.fr/hor/fdi:010076602}, }