Dataset to estimate biomass and carbon stocks in ecotone forests on the eastern of Maracá Island, northern Brazilian Amazon
The dataset provides information on biomass / carbon estimates for the ecotone forests dispersed on the eastern region of the Maracá Ecological Station; a Brazilian protected area formed by Maracá Island and islets (hereafter “Maracá”) located on the Rio Uraricoera, State of Roraima, northern Brazilian Amazon. The carbon in above-ground total biomass (AGB) was estimated based on data from the 4th “tree+palm” census (https://data.mendeley.com/datasets/8cdwkhcsy7/2) carried out in 129 permanent plots (50 mx 10 m; 6.45 ha) installed on the six East-West trails in the PPBio research grid installed in Maracá (https://ppbio.inpa.gov.br/sitios/maraca). A general allometric model (Chave et al., 2014) was adopted for estimate AGB for each tree in the database. The palms biomass was performed at the gender level using the allometric models of Goodman et al. (2013). The individual carbon was calculated multiplying the biomass of each tree/palm by a factor of 0.5 (considering 50% of C). The individuals carbon values were used to compose the total carbon stock in each plot taking into account three arboreal classes: (i) P. gracilipes (Leguminosae tree species with higher abundance in the region), (ii) others (all other tree species) and (iii) palms (a set of five arborescent species). The dataset consists of three files: (i) study_site - a figure indicating the geographical location of the study area; (ii) location_plot - identification of the sampling plots (unique code) and their geographical location in (i) lat / long - WGS84 and (ii) UTM / Zone 20 N, WGS 84; (iii) biomass_carbon - biomass and carbon stocks of P. gracilipes, others and palm trees (Mg / 500m² and % of each arboreal class). The current dataset was supported by the projects (i) SavFloRR - Ecologia e manejo dos recursos naturais de ecossistemas de savanas e florestas de Roraima (PPI INPA 015/122), and (ii) Crescimento e mortalidade de árvores em florestas ecotonais de Roraima: efeito das condicionantes ambientais e da variabilidade climática (Proc. CNPq n. 403591 / 2016-3). The Coordination for the Improvement of Higher Education Personnel (CAPES) supported E.H.S. The PELD Program provide a scholarship to W.R.S. (CNPq / CAPES / FAPs / BC-Fundo Newton; Proc. N. 441575 / 2016-1). The National Council Scientific and Technological Development (CNPq) provided a grant to R.I. Barbosa (CNPq 304204 / 2015-3). The Chico Mendes Institute for Biodiversity Conservation (ICMBio) authorized the study (SISBIO nº 52071).