Deforestation Polygon Assessment Tool: Providing Comprehensive Information On Deforestation In The Brazilian Cerrado Biome

2020 ◽  
Author(s):  
Luiz Mario. L. Pascoal ◽  
Leandro L. Parente ◽  
H. M. Sergio Nogueira ◽  
Laerte Guimaraes F. Junior
Keyword(s):  
Assessment Tool ◽  
Brazilian Cerrado ◽  
Cerrado Biome ◽  
Comprehensive Information

scholarly journals Evaluation of Evapotranspiration in Brazilian Cerrado Biome Simulated with the SWAT Model

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2037
Author(s):  
Amanda do Nascimento Ferreira ◽  
Andréia de Almeida ◽  
Sergio Koide ◽  
Ricardo Tezini Minoti ◽  
Mario Benjamim Baptista de Siqueira
Keyword(s):  
Turbulent Flow ◽  
Eddy Covariance ◽  
Hydrological Modeling ◽  
Assessment Tool ◽  
Potential Evapotranspiration ◽  
Swat Model ◽  
Federal District ◽  
Brazilian Cerrado ◽  
Eddy Covariance Method ◽  
Cerrado Biome

Evapotranspiration represents a significant part on the water balance and, thus, the correct evaluation of this hydrological parcel is relevant when modeling a watershed. The objective of this work is to evaluate the Soil and Water Assessment Tool (SWAT) model’s capability in adequately simulating evapotranspiration in a watershed with predominance of the Brazilian Cerrado biome. Hydrological modeling of the Gama watershed located in the Federal District, which has 57.5% of its total area covered by pristine Cerrado, was conducted. Hydrometeorological and turbulent flow variables have been monitored in weather station and Eddy Covariance (EC) tower, respectively. SWAT simulations were performed for potential evapotranspiration methods: Hargreaves (H), Priestley–Taylor (PT) and Penman–Monteith (PM). Modified versions of SWAT for estimating actual (ET) by Strauch and Volk (2013) (SV) and Arroio Junior (2016) (AR) were also tested. The calibration and verification of the SWAT model, in terms of daily flow, were carried out using a Particle Swarm Optimization algorithm, and fair results were obtained with all the methods evaluated. The actual evapotranspiration (ET) simulated with SWAT (ETsim) using the PM, PT, H, SV and AR methods for a Cerrado hydrological response unit (HRU) were evaluated and compared with the ET obtained using the turbulent flow (Eddy Covariance) method (ETobs). Comparing ETobs and ETsim results, the PM method showed the best fitness and the H and PT methods showed better fit for the dry and the rainy periods, respectively. Although representing an advance on ET modeling, the SV and AR modifications did not improve the response in terms of simulation of the studied area.

scholarly journals Evaluation of Satellite Precipitation Products for Hydrological Modeling in the Brazilian Cerrado Biome

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2571
Author(s):  
Jhones da S. Amorim ◽  
Marcelo R. Viola ◽  
Rubens Junqueira ◽  
Vinicius A. de Oliveira ◽  
Carlos R. de Mello
Keyword(s):  
Hydrological Modeling ◽  
Assessment Tool ◽  
Hydrological Regime ◽  
Tropical Rainfall Measuring Mission ◽  
Brazilian Cerrado ◽  
Local Data ◽  
Satellite Precipitation ◽  
Cerrado Biome ◽  
Statistical Precision ◽  
P Factor

This study investigates the applicability of Satellite Precipitation Products (SPPs) in streamflow simulations performed in the Brazilian Cerrado biome, which is one of the world’s biodiversity hotspots. Local data from ground observations were used as a reference for evaluating the Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA) and Integrated Multi-Satellite Retrievals for Global Precipitation Measurement (IMERG). The Soil and Water Assessment Tool (SWAT) was used to simulate the streamflow in a subbasin of the Tocantins river basin. Statistical precision metrics showed that both SPPs presented a satisfactory performance for precipitation monitoring on a monthly scale, in which IMERG performed better than TMPA. The Nash–Sutcliff coefficient and Kling–Gupta efficiency obtained for both calibration and validation period were greater than 0.82 and 0.79, respectively, demonstrating that both SPPs were able to simulate the hydrological regime adequately. However, the bias indicated that the SPPs overestimated the observed streamflow. The r-factor and p-factor values showed that both TMPA and IMERG presented low uncertainty in streamflow simulations. SPPs offer a great alternative for monitoring the precipitation and hydrological studies in the Brazilian Cerrado biome, and presented better simulation results than rain gauges.

scholarly journals DEFORESTATION POLYGON ASSESSMENT TOOL: PROVIDING COMPREHENSIVE INFORMATION ON DEFORESTATION IN THE BRAZILIAN CERRADO BIOME

2020 ◽  
Vol XLII-3/W12-2020 ◽  
pp. 213-218
Author(s):  
L. M. L. Pascoal ◽  
L. L. Parente ◽  
S. H. M. Nogueira ◽  
L. G. Ferreira Júnior
Keyword(s):  
Assessment Tool ◽  
Spatial Relations ◽  
Web Based ◽  
Cerrado Biome ◽  
Confidence Levels ◽  
Brazilian Government ◽  
Comprehensive Information ◽  
Platform Process ◽  
Interactive Map ◽  
Land Cover Maps

Abstract. Considered a conservation hotspot of the world biodiversity and a key region for the agriculture production in Brazil, the Cerrado biome has only 7.5% of its native vegetation as fully protected areas. Given this, in 2016 the Brazilian government started an official project to monitoring deforestation in the biome, through the so-called PRODES-Cerrado, responsible for mapping deforested areas from 2000 on, and DETER-Cerrado, responsible to generate deforestation alerts. Seeking to contribute with both context information and confidence levels for the polygons produced by these two monitoring systems, we developed the Deforestation Polygon Assessment Tool. This web-based platform process and presents several analysis for PRODES-Cerrado and DETER-Cerrado polygons using automatic assessments (e.g. BFastMonitor and Weights of Evidence), field validation and spatial analysis with key datasets (e.g. National Land Registry, Land-Use and Land-Cover maps). The platform implements an interactive map which allows a fast and comprehensive visualization of different layers, as well as a Deforestation Report at the polygon level, which gathers all the information about each polygon, providing greater reliability and understanding of the deforestation dynamics in the Cerrado. Future improvements in the platform will consider additional, spatial relations in order to assist government agencies to either prevent or reduce deforestation occurrences in each municipality in the Cerrado biome.

scholarly journals Hydrological modeling in a basin of the Brazilian Cerrado biome

2021 ◽  
Vol 16 (1) ◽  
pp. 1
Author(s):  
Jéssica Assaid Martins Rodrigues ◽  
Alberto Carlos de Oliveira Andrade ◽  
Marcelo Ribeiro Viola ◽  
Danton Diego Ferreira ◽  
Carlos Rogério de Mello ◽  
...  
Keyword(s):  
Water Resource ◽  
Water Resource Management ◽  
Hydrological Modeling ◽  
Assessment Tool ◽  
Swat Model ◽  
Coefficient Of Determination ◽  
Brazilian Cerrado ◽  
Ann Model ◽  
Cerrado Biome ◽  
Daily Streamflow

The Brazilian Cerrado biome (BCB) is among 25 biodiversity hotspots identified worldwide, and covers the recharge area of important aquifers and rivers in South America. The increase in deforestation has been threatening water availability in this region. In order to assist in the water-resource management of the BCB, this study models the daily streamflow in a basin of the Cerrado, using two approaches: a process-based model (Soil and Water Assessment Tool - SWAT) and the data-driven model (Artificial Neural Network - ANN). The performance of the models was evaluated by the Nash-Sutcliffe coefficient (NSE), coefficient of determination (R2) and flow-duration-curves (FDC). The results indicate that SWAT (NSE > 0.61; R2 > 0.68) and ANN (NSE > 0.91; R2 > 0.79) models are suitable tools in daily streamflow modeling of the studied basin, with the ANN model being the most accurate. Based on FDC, the ANN model was also better than the SWAT model for all frequencies evaluated. Thus, the ANN model is a promising new approach for daily streamflow modelling in this region. Moreover, the results of this study can help water-resource managers in planning and implementing appropriate water allocation and conservation measures in the Brazilian Cerrado biome.

High throughput screening to investigate Brazilian Cerrado biome plant extract bank chemical diversity

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
LS Espindola ◽  
RG Dusi ◽  
KR Gustafson ◽  
J McMahon ◽  
JA Beutler
Keyword(s):  
High Throughput ◽  
Plant Extract ◽  
High Throughput Screening ◽  
Chemical Diversity ◽  
Brazilian Cerrado ◽  
Cerrado Biome

Two new wild cassava species (Manihot, Euphorbiaceae) from the Brazilian Cerrado

Phytotaxa ◽  
2015 ◽  
Vol 213 (2) ◽  
pp. 131 ◽  
Author(s):  
Marcos José Silva
Keyword(s):  
Conservation Status ◽  
Taxonomic Study ◽  
Brazilian Cerrado ◽  
Habitat Distribution ◽  
Cerrado Biome

Manihot luxurians and M. confertiflora are herein described and illustrated. Both species were collected in the Chapada dos Veadeiros region during a taxonomic study of the genus Manihot in the Cerrado Biome. The morphological affinities, habitat, distribution, conservation status of both species are also provided.

scholarly journals Hydrological simulation in a tropical humid basin in the Cerrado biome using the SWAT model

2018 ◽  
Vol 49 (3) ◽  
pp. 908-923 ◽  
Author(s):  
Richarde Marques da Silva ◽  
José Carlos Dantas ◽  
Joyce de Araújo Beltrão ◽  
Celso A. G. Santos
Keyword(s):  
Assessment Tool ◽  
Swat Model ◽  
Coefficient Of Determination ◽  
Southeastern Brazil ◽  
Measured Variable ◽  
Hydrological Simulation ◽  
Cerrado Biome ◽  
Monthly Streamflow ◽  
P Factor ◽  
Water Assessment

Abstract A Soil and Water Assessment Tool (SWAT) model was used to model streamflow in a tropical humid basin in the Cerrado biome, southeastern Brazil. This study was undertaken in the Upper São Francisco River basin, because this basin requires effective management of water resources in drought and high-flow periods. The SWAT model was calibrated for the period of 1978–1998 and validated for 1999–2007. To assess the model calibration and uncertainty, four indices were used: (a) coefficient of determination (R2); (b) Nash–Sutcliffe efficiency (NS); (c) p-factor, the percentage of data bracketed by the 95% prediction uncertainty (95PPU); and (d) r-factor, the ratio of average thickness of the 95PPU band to the standard deviation of the corresponding measured variable. In this paper, average monthly streamflow from three gauges (Porto das Andorinhas, Pari and Ponte da Taquara) were used. The results indicated that the R2 values were 0.73, 0.80 and 0.76 and that the NS values were 0.68, 0.79 and 0.73, respectively, during the calibration. The validation also indicated an acceptable performance with R2 = 0.80, 0.76, 0.60 and NS = 0.61, 0.64 and 0.58, respectively. This study demonstrates that the SWAT model provides a satisfactory tool to assess basin streamflow and management in Brazil.

Predicting runoff series in ungauged basins of the Brazilian Cerrado biome

2022 ◽  
pp. 105315
Author(s):  
Daniel Althoff ◽  
Lineu Neiva Rodrigues ◽  
Demetrius David da Silva
Keyword(s):  
Ungauged Basins ◽  
Brazilian Cerrado ◽  
Cerrado Biome ◽  
Runoff Series

Three new species of Macrelmis Motschulsky, 1859 (Coleoptera: Elmidae: Elminae) from the Brazilian Cerrado Biome with updated key for the Macrelmis of Brazil

Zootaxa ◽  
2013 ◽  
Vol 3736 (2) ◽  
pp. 128 ◽  
Author(s):  
FELIPE FRANCISCO BARBOSA ◽  
ANDRÉ SILVA FERNANDES ◽  
LEANDRO GONÇALVES OLIVEIRA
Keyword(s):  
New Species ◽  
Brazilian Cerrado ◽  
Cerrado Biome ◽  
Three New Species

scholarly journals Expansion of the known range of the Lesser Bulldog Bat, Noctilio albiventris Desmarest, 1818 (Chiroptera, Noctilionidae) in the Brazilian Cerrado

Check List ◽  
2018 ◽  
Vol 14 (2) ◽  
pp. 313-317
Author(s):  
Ana P. M. Olímpio ◽  
Fabio H. S. Cardoso ◽  
Cleison L. S. Costa ◽  
Elmary C. Fraga ◽  
Maria C. Barros
Keyword(s):  
The State ◽  
Northeastern Brazil ◽  
Coi Gene ◽  
Morphological Identification ◽  
Brazilian Cerrado ◽  
Cerrado Biome ◽  
The North

The Lesser Bulldog Bat, Noctilio albiventris, is found in all major Brazilian phytogeographic domains. We extend the known distribution of this species in the Cerrado, where 3 specimens were collected in the municipality of Caxias, which is within the Cerrado domain of the state of Maranhão, northeastern Brazil. Our analysis of the COI gene confirms the morphological identification of the specimens, based on a 99.8–100% similarity with known sequences. This record extends the known distribution of N. albiventris 260 km to the east, in the state of Maranhão, and 986 km to the north, in the Cerrado biome. 

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