Mangroves of Brazil

Lacerda, Luiz Drude de; Ferreira, Alexander Cesar; Borges, Rebecca; Ward, Raymond D.

doi:10.1007/978-981-19-0519-3_20

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2023

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“…In addition to the high rates of sequestration, the area covered by these mangroves is globally signi cant as they make up a large proportion of the mangroves of Brazil (north Brazil contains 77% of the mangroves of Brazil 52 ), and Brazil itself has the second largest mangrove area cover in the world 53 .…”

Section: Discussionmentioning

confidence: 99%

Amazonian vegetated estuarine ecosystem as a global hotspot in carbon sequestration

Ward

Lacerda

Cerqueira

et al. 2023

Preprint

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Mangroves provide a vital role in mitigating climate change through sequestering large amounts of carbon. Brazil contains the second largest extent of mangroves in the world, with 77% of this adjacent to the Amazon estuary, a largely understudied region, due to its extent and inaccessibility. To address this, this study analysed rates of carbon sequestration in the mangroves and várzea of the Amazon estuary. Observed rates of carbon sequestration varied between 111-3,487 gC m2 year-1, with a regional average of 1,718 gC m2 year-1. This compares very favourably with previously reported global averages of 134-226 gC m2 year-1, suggesting that these sites sequester an order of magnitude more carbon than global averages. This is likely due to the large volume of organic material provided by the Amazon and Tocantins Rivers, as well as from inputs along the coast from the Bragança Mangrove, the second largest continuous mangrove in the world.

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Section: Discussionmentioning

confidence: 99%