Relação Entre o Standardized Precipitation Index (SPI) e os Relatórios de Ocorrência de Incêndios (ROI) no Parque Nacional do Itatiaia

Júnior, José Francisco Oliveira; Sousa, Gustavo de; Nunes, Marlon Thiago de Oliveira; Fernandes, Manoel do Couto; Tomzhinski, Gustavo Wanderley

doi:10.1590/2179-8087.003116

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…Such anomalies either prolongate the dry season or create wet season dry spells, which reduce the cumulative precipitation during the wet season. Such El Niño-induced drought events are assumed to decrease soil and plant moisture, thereby intensifying fires in the tropical montane grasslands (Oliveira Junior et al, 2017). However, little quantitative research has been conducted to validate those assumptions and have found conflicting results (Modenesi-Gautierri & Nunes, 1998).…”

Section: Introductionmentioning

confidence: 99%

2015/16 El Niño increased water demand and pushed plants from a Mesic tropical montane grassland beyond their hydraulic safety limits

2023

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In 2015/16, a strong El Niño event caused anomalously high temperatures and reduced precipitation resulting in Pantropical drought‐induced diebacks and wildfires. Although many studies have documented the El Niño impacts on tropical forests, little we know about its effects on tropical grasslands. Here, we investigated plant drought responses during and after the 2015/16 El Niño event (Jun 2016 to Aug 2017) in 12 species with contrasting drought strategies (tolerance, avoidance and escape) in a Brazilian tropical montane grassland. We tested if (1) the El Niño event induced meteorological drought anomalies, (2) the atmospheric and/or soil drought led to plant water stress and (3) plants showed signs of drought recovery. In contrast to other tropical areas, we found that the 2015/16 El Niño event did not strongly affect precipitation in our study site. However, it increased air temperature and vapour pressure deficit, thus pushing all grassland species, even the most drought‐tolerant ones, beyond their hydraulic safety margins during the dry season. Most species showed signs of drought recovery, returning to positive hydraulic margins in the wet season after the El Niño. However, the finding that all evaluated species, regardless of their drought‐response strategy, are already operating close to their hydraulic safe thresholds for stomatal closure and turgor loss suggests that this cool–humid tropical montane grassland is especially vulnerable to meteorological extremes exacerbated by the additive effects of El Niño and climate change.

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Section: Introductionmentioning

confidence: 99%

2015/16 El Niño increased water demand and pushed plants from a Mesic tropical montane grassland beyond their hydraulic safety limits

2023

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“…In the last decades, data from environmental satellites have been used to detect active fires and hot spots and to map burned areas LEWIS;JUSTICE, 2002;CAÚLA et al, 2016). These data have been effective in monitoring, preventing, and combating fires (ROY et al, 2008;OLIVEIRA JÚNIOR et al, 2017). Based on the data, information and estimates of the location, period, and frequency of fires have been generated, which can provide evidence of their spatiotemporal dynamics (ANTUNES; RIBEIRO, 2000; SILVA; ROCHA; ANGELO, 2013).…”

Section: Introductionmentioning

confidence: 99%

Spatial-temporal of fire foci in the state of Rio de Janeiro, Brazil

Góis

Freitas²,

Júnior³

2020

Biosci. J.

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This study evaluated the space-time variability of fire foci via environmental satellites for the State of Rio de Janeiro (SRJ) based on statistical procedures. The fire foci in the period of 2000 to 2015 were obtained from the BDQueimadas fire database. Descriptive, exploratory, and multivariate statistical analyses were performed in the software environment R i386 version 3.2.5. The north region had 6760 foci (21.11%), the south-central region had 3020 foci (9.43%), the Middle Paraíba had 6,352 foci (19.84%), the Metropolitan areas had 6671 foci (20.83%), and the Green Coast region had 292 foci (0.91%). The cluster analysis identified three homogeneous groups of fire foci (G1, G2, and G3) but did not include the municipality of Campos dos Goytacazes (NA). The G1 group (6.21 ± 0.01 foci, 57.61%) included areas throughout the state and covered the coastal region and lowlands towards the north. The G2 group (6.21 ± 0.01 foci, 34.81%) included the northern, south-central, and coastal shallows regions. The G3 group (6.21 ± 0.01 foci, 9.78%) included the mountain ranges of the state. Environmental characteristics and socioeconomic are crucial in the dynamics of fire foci in Rio de Janeiro.

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“…The climatic changes of the last decades and the long periods of drought results in a tendency of increasing the frequency and intensity of the occurrences of fire caused by high temperatures (KELLY; BROTONS, 2017). For Oliveira Júnior et al (2017), the number of outbreaks of forest fires and burnings has increased significantly in the country. In addition, in the last 20 years, there has been a considerable raise in the interest in forest fire events, especially with regard to the Environmental Preservation Areas.…”

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confidence: 99%

Measuring Public Expenses With Workforce in Fighting Forest Fire

Silva

Fiedler

Ferreira³

et al. 2020

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Measuring public expenses with workforce in fighting forest fire. The frequency of forest fires and the lack of investment in public institutions arising from the current Brazilian economic crisis, emerges the difficulty of competent institutions in managing resources due to the increasing number of fires, mainly the labor. The objective of this work was to measure the expenses with labor in the combats against forest fires in Public Conservation Units by comparing it with the labor with prevention. This exploratory, documentary and ex post facto study was prepared based on documents and reports from public institutions involved in fighting a major fire in a Biological Reserve in the State of Espírito Santo. The data were analyzed according to the participating institutions, number of participants, positions, value of remunerations and days worked. To measure the average daily expenditure on different remunerations, an accounting model was developed, using the values of the remunerations for the year in which the fire occurred. In the end, it could be concluded that, for every 124.3 hectares burned, 110 individuals worked per day, the majority were military personnel at the beginning of their careers and that the expenditure on public labor employed in combat, both in quantity and remuneration, was much higher than the labor with the temporary hiring of firefighters.

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Relação Entre o Standardized Precipitation Index (SPI) e os Relatórios de Ocorrência de Incêndios (ROI) no Parque Nacional do Itatiaia

Cited by 5 publications

References 17 publications

2015/16 El Niño increased water demand and pushed plants from a Mesic tropical montane grassland beyond their hydraulic safety limits

2015/16 El Niño increased water demand and pushed plants from a Mesic tropical montane grassland beyond their hydraulic safety limits

Spatial-temporal of fire foci in the state of Rio de Janeiro, Brazil

Measuring Public Expenses With Workforce in Fighting Forest Fire

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