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Mangrove sedimentation and response to relative sea-level rise

Journal Article


Abstract


  • Mangroves occur on upper intertidal shorelines in the tropics and subtropics. Complex hydrodynamic and salinity conditions, related primarily to elevation and hydroperiod, influence mangrove distributions; this review considers how these distributions change over time. Accumulation rates of allochthonous and autochthonous sediment, both inorganic and organic, vary between and within different settings. Abundant terrigenous sediment can form dynamic mudbanks, and tides redistribute sediment, contrasting with mangrove peat in sediment-starved carbonate settings. Sediments underlying mangroves sequester carbon but also contain paleoenvironmental records of adjustments to past sea-level changes. Radiometric dating indicates long-term sedimentation, whereas measurements made using surface elevation tables and marker horizons provide shorter perspectives, indicating shallow subsurface processes of root growth and substrate autocompaction. Many tropical deltas also experience deep subsidence, which augments relative sea-level rise. The persistence of mangroves implies an ability to cope with moderately high rates of relative sea-level rise. However, many human pressures threaten mangroves, resulting in a continuing decline in their extent throughout the tropics.

Authors


  •   Woodroffe, Colin D.
  •   Rogers, Kerrylee
  •   Mckee, Karen (external author)
  •   Lovelock, Catherine E. (external author)
  •   Mendelssohn, I A. (external author)
  •   Saintilan, Neil (external author)

Publication Date


  • 2016

Citation


  • Woodroffe, C. D., Rogers, K., McKee, K. L., Lovelock, C. E., Mendelssohn, I. A. & Saintilan, N. (2016). Mangrove sedimentation and response to relative sea-level rise. Annual Review of Marine Science, 8 243-266.

Scopus Eid


  • 2-s2.0-84954202700

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/3588

Has Global Citation Frequency


Number Of Pages


  • 23

Start Page


  • 243

End Page


  • 266

Volume


  • 8

Place Of Publication


  • United States

Abstract


  • Mangroves occur on upper intertidal shorelines in the tropics and subtropics. Complex hydrodynamic and salinity conditions, related primarily to elevation and hydroperiod, influence mangrove distributions; this review considers how these distributions change over time. Accumulation rates of allochthonous and autochthonous sediment, both inorganic and organic, vary between and within different settings. Abundant terrigenous sediment can form dynamic mudbanks, and tides redistribute sediment, contrasting with mangrove peat in sediment-starved carbonate settings. Sediments underlying mangroves sequester carbon but also contain paleoenvironmental records of adjustments to past sea-level changes. Radiometric dating indicates long-term sedimentation, whereas measurements made using surface elevation tables and marker horizons provide shorter perspectives, indicating shallow subsurface processes of root growth and substrate autocompaction. Many tropical deltas also experience deep subsidence, which augments relative sea-level rise. The persistence of mangroves implies an ability to cope with moderately high rates of relative sea-level rise. However, many human pressures threaten mangroves, resulting in a continuing decline in their extent throughout the tropics.

Authors


  •   Woodroffe, Colin D.
  •   Rogers, Kerrylee
  •   Mckee, Karen (external author)
  •   Lovelock, Catherine E. (external author)
  •   Mendelssohn, I A. (external author)
  •   Saintilan, Neil (external author)

Publication Date


  • 2016

Citation


  • Woodroffe, C. D., Rogers, K., McKee, K. L., Lovelock, C. E., Mendelssohn, I. A. & Saintilan, N. (2016). Mangrove sedimentation and response to relative sea-level rise. Annual Review of Marine Science, 8 243-266.

Scopus Eid


  • 2-s2.0-84954202700

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/3588

Has Global Citation Frequency


Number Of Pages


  • 23

Start Page


  • 243

End Page


  • 266

Volume


  • 8

Place Of Publication


  • United States