Contemporary rates of carbon sequestration through vertical accretion of sediments in mangrove forests and saltmarshes of South East Queensland, Australia

Catherine E. Lovelock, Maria Fernanda Adame, Vicki Bennion, Matthew Hayes, Julian O’Mara, Ruth Reef, Nadia S. Santini

Research output: Contribution to journalArticleResearchpeer-review

50 Citations (Scopus)

Abstract

Mangrove forests and saltmarshes are important habitats for carbon (C) sequestration in the coastal zone but variation in rates of C sequestration and the factors controlling sequestration are poorly understood. We assessed C sequestration in Moreton Bay, South East Queensland in mangrove forests and tidal marshes that span a range of environmental settings and plant communities, including mangrove forests and tidal marshes on the oligotrophic sand islands of the eastern side of Moreton Bay and on the nutrient enriched, western side of the bay adjacent to the city of Brisbane. We found that rates of C sequestration in sediments were similar among mangrove forests over the bay, despite large differences in the C density of sediments, because of different rates of vertical accretion of sediments. The C sequestration on the oligotrophic sand island tidal marshes, dominated by Juncus kraussii , had the highest rate of C sequestration in the bay while the western saltmarshes, which were dominated by Sarcocornia quinqueflora, had the lowest rate of C sequestration. Our data indicate C sequestration varies among different tidal wetland plant community types, due to variation in sediment characteristics and rates of sediment accretion over time.

Original languageEnglish
Pages (from-to)763-771
Number of pages9
JournalEstuaries and Coasts
Volume37
Issue number3
DOIs
Publication statusPublished - May 2014
Externally publishedYes

Keywords

  • Avicennia marina
  • Carbon/phosphorus ratio
  • Rod surface elevation tables
  • Sediment nutrients

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