FN Archimer Export Format PT J TI Fine root production in a chronosequence of mature reforested mangroves BT AF Arnaud, Marie Morris, Paul J. Baird, Andy J. Dang, Huyen Nguyen, Tai Tue AS 1:1,2,3;2:2;3:2;4:4;5:5; FF 1:PDG-ODE-LITTORAL-LERPC;2:;3:;4:;5:; C1 IFREMER, Laboratoire Environnement et Ressources des Pertuis Charentais (LER‐PC) La Tremblade BP133, France School of Geography University of Leeds Leeds LS2 9JT, UK School of Geography, Earth and Environmental Sciences University of Birmingham Edgbaston Birmingham B15 2TT ,UK Faculty of Geology and Petroleum Engineering Ho Chí Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet St., Dist. 10 Ho Chí Minh ,Vietnam VNU‐University of Science, ‐ 334 Nguyen Trai Thanh Xuan Hanoi, Vietnam C2 IFREMER, FRANCE UNIV LEEDS, UK UNIV BIRMINGHAM, UK UNIV HO CHI MINH, VIETNAM UNIV SCI (VNU), VIETNAM SI LA TREMBLADE SE PDG-ODE-LITTORAL-LERPC IN WOS Ifremer UPR copubli-europe copubli-int-hors-europe copubli-sud IF 10.323 TC 18 UR https://archimer.ifremer.fr/doc/00696/80777/84110.pdf https://archimer.ifremer.fr/doc/00696/80777/84111.pdf LA English DT Article DE ;belowground carbon;blue carbon;coastal wetland;EnRoot minirhizotron;fine root production;reforestation;restoration;root trait AB Mangroves are among the world’s most carbon-dense ecosystems, but have suffered extensive deforestation, prompting reforestation projects. The effects of mangrove reforestation on belowground carbon dynamics are poorly understood. In particular, we do not know how fine root production develops following mangrove reforestation, despite fine root production being a major carbon sink and an important control of mangrove soil accretion. Using minirhizotrons, we investigated fine root production and its depth-variation along a chronosequence of mature Vietnamese mangroves. Our results show that fine root production decreases strongly with stand age in the uppermost 32 cm of our soil profiles. In younger mangrove stands, fine root production declines with depth, possibly due to a vertical gradient in soil nutrient availability; while root production in the oldest stand is low at all depths and exhibits no clear vertical pattern. A major fraction of fine root production occurs deeper than 30 cm, depths that are commonly omitted from calculations of mangrove carbon budgets. Younger mangroves may accrue shallow soil organic matter faster than oldermangroves. Therefore, root productivity and forest stand age should be accounted for when forecasting mangrove carbon budgets and resistance to sea level rise. PY 2021 PD NOV SO New Phytologist SN 0028-646X PU Wiley VL 232 IS 4 UT 000667180200001 BP 1591 EP 1602 DI 10.1111/nph.17480 ID 80777 ER EF