First Assessment of Carbon Stock in the Belowground Biomass of Brazilian Mangroves.

Abstract:

:Studies on belowground roots biomass have increasingly reported the importance of the contribution of this compartment in carbon stock maintenance in mangrove forests. To date, there are no estimates of this contribution in Brazilian mangrove forests, although the country has the second largest area of mangroves worldwide. For this study, trenches dug in fringing forests in Guaratiba State Biological Reserve (Rio de Janeiro, Brazil) were used to evaluate the contribution of the different classes of roots and the vertical stratification of carbon stock. The total carbon stock average in belowground roots biomass in these forests was 104.41 ± 20.73 tC.ha-1. From that, an average of 84.13 ± 21.34 tC.ha-1 corresponded to the carbon stock only in fine roots, which have diameters smaller than 5 mm and are responsible for over 80% of the total belowground biomass. Most of the belowground carbon stock is concentrated in the first 40 cm below the surface (about 70%). The root:shoot ratio in this study is 1.14. These estimates demonstrate that the belowground roots biomass significantly contributes, more than 50%, to the carbon stock in mangrove forests. And the mangrove root biomass can be greater than that of other Brazilian ecosystems.

journal_name

An Acad Bras Cienc

authors

Santos DMC,Estrada GCD,Fernandez V,Estevam MRM,Souza BT,Soares MLG

doi

10.1590/0001-3765201720160496

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

1579-1589

issue

3

eissn

0001-3765

issn

1678-2690

pii

S0001-37652017005019108

journal_volume

89

pub_type

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