Erratum to: Aboveground biomass and carbon stock are related with soil humidity in a mangrove at the Piraquê-Açu River, southeastern Brazil

Abstract

In Brazil, few studies have been conducted about the assimilation of carbon and biomass accumulation in mangroves despite its great role as a carbon sink. In this sense, this study aimed to estimate the aboveground biomass (AGB) and carbon stocked by mangrove species in a stretch along the Piraquê-Açu River in southeastern Brazil, and to verify their relation with some soil parameters. For such, the height and diameter of all trees inside six plots of 100 m 2 were measured and used to quantify AGB through an allometric equation, and soil samples were collected to calculate granulometry, humidity, time of infiltration and permeability. Multiple regressions were used to identify relations between AGB and soil parameters. A total of 296 trees were found in the area and the AGB and carbon assimilated were 48.61 t ha -1 and 24.30 t ha -1 , respectively. Laguncularia racemosa was the most abundant species and contributed with 61% of these values. Only a positive relation between AGB/ carbon of L. racemosa and soil humidity was found, probably due to the substrate characteristics which contain a large concentration of silt/clay, and may store more water and do not yet provide firmness to the roots. By comparison, this mangrove had a low amount of AGB and carbon stocked and has yet to develop structurally. Along with other ecological functions and its associated ecosystem services such as supplying food for the local community, these features highlight the importance to conserve the studied mangrove and the interlinked coastal ecosystems. ResultsA total of 48.61 t ha -1 of aboveground biomass and 24.30 t ha -1 of carbon were estimated for the mangrove, wherein L. racemosa was the species with the highest biomass and carbon, followed by R. mangle and A. schaueriana (Table 2).

Aboveground Biomass Estimation of Mangrove Ecosystem in the Anambas Islands Using Remote Sensing Data

“…Through substrate type assessments using the "feel method" [43], we identified three substrate types at our study location: loamy sand, sandy loam, and silt loam. Some plots with loamy sand substrate exhibited high AGB values, primarily due to the prevalence of Rhizophora sp., in these areas, which tend to exhibit greater AGB production in environments with lower concentrations of silt or clay [42].…”

“…Biomass (including carbon) production in mangroves appears to be influenced by various factors, including locationspecific characteristics like soil and substrate type, tidal and salinity regimes, as well as species composition [41]. Soil containing a greater proportion of fine particles has the capacity to retain more water compared to sandy soils, and with more silt or clay content, it can offer greater stability and support for the roots in contrast to sandy soils [42].…”