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Global patterns in mangrove soil carbon stocks and losses

  • Atwood, T.B.
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  • Macreadie, P.I.
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  • Serrano, O.
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  • Sanders, C.J.
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  • Santos, I.
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  • Steven, A.D.L.
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  • Lovelock, C.E.
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  • Connolly, R.M.
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  • Almahasheer, H.
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  • Carnell, P.E.
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  • Duarte, C.M.
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  • Lewis, C. J. E.
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  • Irigoien, X.
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  • Kelleway, J.J.
    • ,
  • Lavery, P.S.

Abstract

Mangrove soils represent a large sink for otherwise rapidly recycled carbon (C). However, widespread deforestation threatens the preservation of this important C stock. It is therefore imperative that global patterns in mangrove soil C stocks and their susceptibility to remineralization are understood. Here, we present patterns in mangrove soil C stocks across hemispheres, latitudes, countries and mangrove community compositions, and estimate potential annual CO2emissions for countries where mangroves occur. Global potential CO2emissions from soils as a result of mangrove loss were estimated to be ∼7.0 Tg CO2e yr−1. Countries with the highest potential CO2 emissions from soils are Indonesia (3,410 Gg CO2e yr−1) and Malaysia (1,288 Gg CO2e yr−1). The patterns described serve as a baseline by which countries can assess their mangrove soil C stocks and potential emissions from mangrove deforestation.

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