FN Archimer Export Format
PT J
TI Mangroves and shoreline erosion in the Mekong River delta, Viet Nam
BT 
AF Besset, Manon
   Gratiot, Nicolas
   Anthony, Edward J.
   Bouchette, Frédéric
   Goichot, Marc
   Marchesiello, Patrick
AS 1:1,2;2:3,4;3:1,5;4:1;5:6;6:7;
FF 1:;2:;3:;4:;5:;6:;
C1 University of Montpellier, Geoscience Montpellier, Montpellier, France
   Aix Marseille University, CNRS, IRD, INRA, Coll France, CEREGE, Aix-en-Provence, France
   CARE, Ho Chi Minh City University of Technology, VNU-HCM, Viet Nam
   Université Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, F-38000, Grenoble, France
   USR LEEISA, CNRS, Cayenne, French Guiana
   Lead, Water, WWF Greater Mekong Programme, 14B Ky Dong Street, Ward 9, District 3, Ho Chi Minh, Viet Nam
   IRD, LEGOS, 14 Avenue Edouard Belin, 31400, Toulouse, France
C2 UNIV MONTPELLIER, FRANCE
   UNIV AIX MARSEILLE, FRANCE
   UNIV HO CHI MINH, VIETNAM
   UNIV GRENOBLE ALPES, FRANCE
   CNRS, FRANCE
   WWF, VIETNAM
   IRD, FRANCE
UM LEEISA
IN WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 2.333
TC 46
UR https://archimer.ifremer.fr/doc/00505/61617/65645.pdf
LA English
DT Article
DE ;Mangroves;Mekong river delta;Shoreline erosion;Coastal squeeze;Sediment supply
AB The question of the rampant erosion of the shorelines rimming the Mekong River delta has assumed increasing importance over the last few years. Among issues pertinent to this question is how it is related to mangroves. Using 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. The results show no significant relationships. We 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. Numerous 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. We 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. Ignoring these overarching conditions implies that high expectations from mangroves in protecting and/or stabilizing the Mekong delta shoreline, and eroding shorelines elsewhere, will meet with disappointment. Among 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. 
PY 2019
PD OCT
SO Estuarine Coastal And Shelf Science
SN 0272-7714
PU Elsevier BV
VL 226
UT 000482495700016
DI 10.1016/j.ecss.2019.106263
ID 61617
ER

EF