@article{fdi:010091607,
  title = {{B}iogeochemical plumbing of pioneer mangrove intertidal flats in {F}rench {G}uiana},
  author = {{A}ller, {R}. and {K}lingensmith, {I}. and {S}tieglitz, {T}homas and {H}eilbrun, {C}. and {W}augh, {S}. and {A}schenbroich, {A}. and {T}houzeau, {G}. and {M}ichaud, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}igrating mudbanks are characteristic features of the vast {A}mazon-{G}uianas coastline along {N}ortheastern {S}outh {A}merica. {A}s illustrated by sites in {F}rench {G}uiana, consolidating mudflats that periodically transition to mangrove forest are permeated by extensive crustacean burrow systems, sometimes in isolation but more often in close association with morpho-sedimentary structures such as tidal pools and channels. {B}urrow structures are critical to mangrove growth. {I}n this study, we evaluated the ways in which burrows act as complex conduits that plumb deposits for solute exchange with overlying water. {W}e sampled burrows during low tide when irrigation is inhibited and burrow water rapidly becomes anoxic. {T}he products of diagenetic reactions, for example: {NH}4+, {N}2, and {S}i({OH})4, build up with time, revealing sedimentary reaction rates and fluxes. {W}hen oxygenated, burrow walls are zones of intense coupled redox reactions such as nitrification-denitrification. {B}uild-up often is lower in burrows connected directly to tidal pools where photosynthetic activity consumes remineralized nutrients, and burrows can remain periodically irrigated at low tide. {D}uring flood, burrows, particularly those that connect tidal pools laterally to channels, can be rapidly flushed and oxygenated as channel water rises and then spreads across flats. {B}urrow flushing produces enhanced concentrations of nutrients within the leading edge of the flood as seawater moves progressively towards and into adjacent mangroves. {E}stimates of burrow volumes obtained from drone surveys together with burrow solute production rates allow upscaling of burrow-sourced metabolite fluxes; however, these are extremely variable due to variable burrow geometries, connections between burrows, pools, and channels, and burrow water residence times (oxygenation). {T}he flushing of burrows during flood results in a rectification of sediment-water fluxes shoreward and enhances the delivery of nutrients from the flats into adjacent mangroves and pools, presumably stimulating colonization and forest growth.},
  keywords = {{GUYANE} {FRANCAISE} ; {BRESIL} ; {AMAZONE} ; {AMAPA} ; {ORENOQUE} {FLEUVE} ; {SINNAMARY}},
  booktitle = {},
  journal = {{R}egional {E}nvironmental {C}hange},
  volume = {24},
  numero = {3},
  pages = {117 [13 ]},
  ISSN = {1436-3798},
  year = {2024},
  DOI = {10.1007/s10113-024-02272-x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091607},
}