Seasonality of gross primary production in the Atlantic Forest of Brazil

Delgado, Rafael Coll; Pereira, Marcos Gervásio; Teodoro, Paulo Eduardo; Santos, Gilsonley Lopes dos; Carvalho, Daniel Costa de; Magistrali, Iris Cristiane; Vilanova, Regiane Souza

doi:10.1016/j.gecco.2018.e00392

Cited by 29 publications

(17 citation statements)

References 30 publications

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“…The Atlantic Forest has one of the richest biodiversities in the world, hosting a range of animal and plant species (Joly et al, 2014;Fundação SOS Mata Atlântica and INPE, 2018). This biome also provides a wide range of ecosystem services (Bullock et al, 2011;Ruggiero et al, 2019), such as carbon storage in the multiple compartments of trees and soil (Pan et al, 2011;Delgado et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Carbon Stock Growth in a Secondary Atlantic Forest

et al. 2019

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The secondary Atlantic forests play an important role in the context of climate change, acting as a carbon sink for the atmosphere. However, these forests can become a carbon source in case of increased tree mortality. Knowing this change is possible through continuous forest inventories that provide information on the dynamics of tree growth. Thus, the objective of this study was to evaluate the carbon growth dynamics of a Seasonal Semideciduous Forest fragment, with 44.11 ha, located in the Parque Tecnológico de Viçosa - MG. The forest inventories were carried out in twenty plots of 10 m x 50 m, in the years of 2010 and 2015, where all stems with dbh ≥ 5 cm were measured, botanically identified and classified in ecological groups. The stem volume was obtained through volumetric equation. Biomass and carbon stock were quantified for compartments located above the ground (stem, branches and leaves) and below ground (roots). The dynamics of carbon growth were evaluated by Gross Increment (GI) and Periodic Annual Increment in carbon of the species (PAI). The GI was 12.72 MgC ha-1, including the carbon from the stems that were recruited and died during the monitoring period. The carbon stock increased 10.01 MgC ha-1, resulting in an PAI of 2.00 MgC ha-1 year-1. Thus, it is concluded that the forest fragment present positive carbon stock growth due to successional progression, ratifying the importance of secondary forest of the Atlantic forest in the mitigation of greenhouse gases in the atmosphere.

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Section: Introductionmentioning

confidence: 99%

Carbon Stock Growth in a Secondary Atlantic Forest

et al. 2019

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“…Although carbon emissions in the Atlantic Forest are relatively insignificant when compared to the Cerrado and Amazon, the trends observed as per the Mann-Kendall test highlights that there is a great concern for future generations of the Atlantic Forest, Cerrado, and Pampa biomes. In a study on the seasonality of Gross Primary Productivity (GPP) in the Itatiaia-Brazil National Park, Delgado et al 28 found an increase in GPP largely occurring in the rainy season due to the solar radiation and high humidity in these areas. They also compared these results with those of Yang et al 29 in the Amazon, where droughts that occurred in this period created a less productive albeit greener forest.…”

Section: Discussionmentioning

confidence: 99%

Persistent fire foci in all biomes undermine the Paris Agreement in Brazil

Silva

Teodoro

Delgado

et al. 2020

Sci Rep

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Brazil is one of the world’s biggest emitters of greenhouse gases (GHGs). Fire foci across the country contributes to these emissions and compromises emission reduction targets pledged by Brazil under the Paris Agreement. In this paper, we quantify fire foci, burned areas, and carbon emissions in all Brazilian biomes (i.e., Amazon, Cerrado, Caatinga, Atlantic Forest, Pantanal and Pampa). We analyzed these variables using cluster analysis and non-parametric statistics to predict carbon and CO2 emissions for the next decade. Our results showed no increase in the number of fire foci and carbon emissions for the evaluated time series, whereby the highest emissions occur and will persist in the Amazon and Cerrado biomes. The Atlantic Forest, Pantanal, Caatinga and Pampa biomes had low emissions compared to the Amazon and Cerrado. Based on 2030 projections, the sum of emissions from fire foci in the six Brazilian biomes will exceed 5.7 Gt CO2, compromising the national GHG reduction targets. To reduce GHG emissions, Brazil will need to control deforestation induced by the expansion of the agricultural frontier in the Amazon and Cerrado biomes. This can only be achieved through significant political effort involving the government, entrepreneurs and society as a collective.

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“…The MOD17A2 product derived from the MODIS sensor provides the accumulated value of GPP based on the concept of efficiency of solar radiation use by vegetation (ε) so that photosynthetically active absorbed radiation (APAR) and primary production are similarly related as Equation (1). APAR can be calculated as the product of incident photosynthetically active radiation (PAR) in the visible spectral range of 0.4 μm -0.7 μm, supposedly 45% of total incident solar radiation and fraction of photosynthetically active radiation absorbed by coverage (FPAR) (Delgado et al, 2018;Heinsch et al, 2003).…”

Section: Gross Primary Productivity (Gpp)mentioning

confidence: 99%

“…Some studies highlight rainfall as one of the main factors responsible for GPP temporal variability (Kanniah, Beringer, & Hutley, 2013;Petrie et al, 2016). The work carried out by Delgado et al (2018) with the objective of this study is to analyze seasonally the Gross Primary Production and compare with the meteorological variables in the Itatiaia National Park. These authors observed that between the rainy and dry seasons GPP presents changes in their values.…”

Section: Effects Of the Fires On The Gross Primary Productivity (Gpp)mentioning

confidence: 99%

Fire dynamics in Mato Grosso State, Brazil: the relative roles of gross primary productivity

Rossi

Santos

2020

Big Earth Data

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The fires and biomass burning are responsible for affect ecosystem processes in a wide range of biomes at regional and global scales. In Brazil, the state of Mato Grosso is one of the most affected by the occurrence of forest fires. Thus, this study aims to quantify the longterm changes in the temporal and spatial patterns of fire occurrence and their effect on gross primary productivity (GPP) in the state of Mato Grosso, Brazil, considering the biomes that compose it. The images used in the study were acquired by satellite Terra and Aqua combined in the product MCD64A1.006, a monthly resolution of 500m by the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor, during the period from 01/10/2000 to 12/31/2018. The MOD17A2 product derived from the MODIS sensor provides the accumulated value of GPP. The points without the presence of burning presented higher values of GPP for all studied biomes. In some points with the presence of burning the GPP even decreased by 44.20%, 30.04% and 55.78% for Amazonia, Cerrado, and Pantanal, respectively. According to the results presented here, it is concluded that the burnings negatively impact gross primary production in the biomes of the state of Mato Grosso, Brazil and the dynamics of the burns do not keep up with the intensity of drought years. The use of cluster analysis techniques, such as principal component analysis (PCA), is an alternative to bigdata analysis when the objective is to evaluate the presence of forest burning in more than one biome.

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Seasonality of gross primary production in the Atlantic Forest of Brazil

Cited by 29 publications

References 30 publications

Carbon Stock Growth in a Secondary Atlantic Forest

Carbon Stock Growth in a Secondary Atlantic Forest

Persistent fire foci in all biomes undermine the Paris Agreement in Brazil

Fire dynamics in Mato Grosso State, Brazil: the relative roles of gross primary productivity

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