Assessment of climate change impacts on the biomass and carbon dynamics in the Amazon

• Grant number: 15/22987-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: May 01, 2016
• End date: March 31, 2020
• Field of knowledge: Physical Sciences and Mathematics - Geosciences
• Principal Investigator: Luiz Eduardo Oliveira e Cruz de Aragão
• Grantee: Ricardo Dal'Agnol da Silva
• Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovação (Brasil). São José dos Campos , SP, Brazil
• Associated scholarship(s): 17/15257-8 - Detection of tree mortality using high resolution optical imagery for assessment of spatial and temporal patterns of forest dynamics and carbon in Amazon forest, BE.EP.DR

Abstract

The Amazon rainforest has proven crucial in the global climate feedback, acting as a strong carbon sink. However, empirical data show a decrease in carbon sequestration associated with increased tree mortality, which, in turn, may be associated with the climate variability. Nevertheless, it have not been found in the literature studies that address tree mortality mapping in Amazon level and a spatiotemporal investigation of its association with extreme weather events. The project aims to develop a multi-scale methodology for estimating dead biomass across the Amazon using remote sensing data and spectral mixture modeling techniques. The objective is to evaluate the impact of climate change on the biomass and carbon balance in Amazon related to tree mortality. Quantification of dead biomass will be evaluated on the scaling of field data (inventory data from the Amazon Forest Inventory Network - RAINFOR) to high spatial resolution Landsat images and medium spatial resolution MODIS images. We intend to answer the following questions: (1) how accurately is it possible to quantify the dead biomass using remote sensed data and for how long after the mortality event the dead biomass signal remain detectable; (2) is there a significant difference in the amount of dead biomass between "normal" years and years of extreme drought, such as 2005 and 2010; (3) is there significant difference in tree mortality between secondary successions and primary forest areas; and (4) how did tree mortality dynamics went in the past few decades in Amazon.

Scientific publications

(12)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FONSECA, LETICIA D. M.; DALAGNOL, RICARDO; MALHI, YADVINDER; RIFAI, SAMI W.; COSTA, GABRIEL B.; SILVA, THIAGO S. F.; DA ROCHA, HUMBERTO R.; TAVARES, IANE B.; BORMA, LAURA S.. Phenology and Seasonal Ecosystem Productivity in an Amazonian Floodplain Forest. REMOTE SENSING, v. 11, n. 13, JUL 1 2019. (08/58120-3, 13/50531-2, 15/22987-7)

SILVA JUNIOR, CELSO H. L.; ANDERSON, LIANA O.; SILVA, ALINDOMAR L.; ALMEIDA, CATHERINE T.; DALAGNOL, RICARDO; PLETSCH, MIKHAELA A. J. S.; PENHA, THALES V.; PALOSCHI, RENNAN A.; ARAGAO, LUIZ E. O. C.. Fire Responses to the 2010 and 2015/2016 Amazonian Droughts. Frontiers in Earth Science, v. 7, MAY 15 2019. (17/15257-8, 16/02018-2, 15/22987-7)

BRAGA, JOSE R. G.; PERIPATO, VINICIUS; DALAGNOL, RICARDO; FERREIRA, MATHEUS P.; TARABALKA, YULIYA; ARAGAO, LUIZ E. O. C.; DE CAMPOS VELHO, HAROLDO E.; SHIGUEMORI, ELCIO H.; WAGNER, FABIEN H.. Tree Crown Delineation Algorithm Based on a Convolutional Neural Network. REMOTE SENSING, v. 12, n. 8, APR 2 2020. (16/17652-9, 18/06072-7, 15/22987-7, 18/15001-6, 15/50484-0)

WAGNER, FABIEN H.; DALAGNOL, RICARDO; TARABALKA, YULIYA; SEGANTINE, TASSIANA Y. F.; THOME, ROGERIO; HIRYE, MAYUMI C. M.. U-Net-Id, an Instance Segmentation Model for Building Extraction from Satellite Images-Case Study in the Joanopolis City, Brazil. REMOTE SENSING, v. 12, n. 10, MAY 2020. (16/17652-9, 15/50484-0, 15/22987-7)

WAGNER, FABIEN H.; DALAGNOL, RICARDO; CASAPIA, XIMENA TAGLE; STREHER, ANNIA S.; PHILLIPS, OLIVER L.; GLOOR, EMANUEL; ARAGAO, LUIZ E. O. C.. Regional Mapping and Spatial Distribution Analysis of Canopy Palms in an Amazon Forest Using Deep Learning and VHR Images. REMOTE SENSING, v. 12, n. 14, JUL 2020. (16/17652-9, 13/50533-5, 15/50484-0, 19/09248-1, 15/22987-7)

WAGNER, FABIEN H.; DALAGNOL, RICARDO; SANCHEZ, ALBER H.; HIRYE, MAYUMI C. M.; FAVRICHON, SAMUEL; LEE, JAKE H.; MAUCERI, STEFFEN; YANG, YAN; SAATCHI, SASSAN. K-textures, a self-supervised hard clustering deep learning algorithm for satellite image segmentation. FRONTIERS IN ENVIRONMENTAL SCIENCE, v. 10, p. 19-pg., 2022-09-20. (15/22987-7, 16/17652-9, 15/50484-0)

DALAGNOL, RICARDO; PHILLIPS, OLIVER L.; GLOOR, EMANUEL; GALVAO, LENIO S.; WAGNER, FABIEN H.; LOCKS, CHARTON J.; ARAGAO, LUIZ E. O. C.. Quantifying Canopy Tree Loss and Gap Recovery in Tropical Forests under Low-Intensity Logging Using VHR Satellite Imagery and Airborne LiDAR. REMOTE SENSING, v. 11, n. 7, APR 1 2019. (16/17652-9, 17/15257-8, 15/50484-0, 15/22987-7)

DALAGNOL, RICARDO; WAGNER, FABIEN H.; GALVAO, LENIO S.; STREHER, ANNIA S.; PHILLIPS, OLIVER L.; GLOOR, EMANUEL; PUGH, THOMAS A. M.; OMETTO, JEAN P. H. B.; ARAGAO, LUIZ E. O. C.. Large-scale variations in the dynamics of Amazon forest canopy gaps from airborne lidar data and opportunities for tree mortality estimates. SCIENTIFIC REPORTS, v. 11, n. 1, JAN 14 2021. (15/22987-7, 16/17652-9, 15/50484-0, 19/21662-8, 19/09248-1)

DALAGNOL, RICARDO; GALVAO, LENIO SOARES; WAGNER, FABIEN HUBERT; DE MOURA, YHASMIN MENDES; GONCALVES, NATHAN; WANG, YUJIE; LYAPUSTIN, ALEXEI; YANG, YAN; SAATCHI, SASSAN; OLIVEIRA CRUZ ARAGAO, LUIZ EDUARDO. AnisoVeg: anisotropy and nadir-normalized MODIS multi-angle implementation atmospheric correction (MAIAC) datasets for satellite vegetation studies in South America. EARTH SYSTEM SCIENCE DATA, v. 15, n. 1, p. 14-pg., 2023-01-19. (15/50484-0, 15/22987-7, 19/21662-8)

DE MOURA, YHASMIN MENDES; BALZTER, HEIKO; GALVAO, LENIO S.; DALAGNOL, RICARDO; ESPIRITO-SANTO, FERNANDO; SANTOS, ERONE G.; GARCIA, MARIANO; BISPO, POLYANNA DA CONCEICAO; OLIVEIRA, RAIMUNDO C.; SHIMABUKURO, YOSIO E.. Carbon Dynamics in a Human-Modified Tropical Forest: A Case Study Using Multi-Temporal LiDAR Data. REMOTE SENSING, v. 12, n. 3, FEB 1 2020. (15/22987-7)

DE MOURA, YHASMIN MENDES. Vulnerability of Amazonian forests to repeated droughts. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, v. 373, n. 1760, NOV 19 2018. (16/17652-9, 15/22987-7, 16/02018-2, 15/50484-0, 17/15257-8)

DALAGNOL, RICARDO; WAGNER, FABIEN HUBERT; GALVAO, LENIO SOARES; NELSON, BRUCE WALKER; DE ARAGAO, LUIZ EDUARDO OLIVEIRA E CRUZ. Life cycle of bamboo in the southwestern Amazon and its relation to fire events. BIOGEOSCIENCES, v. 15, n. 20, p. 6087-6104, OCT 18 2018. (17/15257-8, 15/50484-0, 16/17652-9, 15/22987-7)