Spatiotemporal dynamics of soybean crop in the Matopiba region, Brazil (1990–2015)

Araújo, Mayara Lucyanne Santos de; Sano, Edson Eyji; Bolfe, É. L.; Santos, Jessflan Rafael Nascimento; Santos, Juliana Sales dos; Silva, Fabrício Brito

doi:10.1016/j.landusepol.2018.09.040

Cited by 107 publications

(84 citation statements)

References 13 publications

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“…During ASO peak, TCNO 2 is located over the Cerrado region where savannah‐type fires (both natural and anthropogenic) burn at high temperatures (Hodgson et al, ) releasing large quantities of NO x (Akagi et al, ). There will also be contributions from deforestation and agricultural fires (e.g., de Araújo et al, ). In comparison, TCNO 2 hot spots over large cities (e.g., São Paulo and Rio De Janeiro) show limited seasonality, remaining above 5.0 × 10 15 molecules per cm 2 year‐round.…”

Section: Resultsmentioning

confidence: 99%

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Substantial Increases in Eastern Amazon and Cerrado Biomass Burning‐Sourced Tropospheric Ozone

Pope

Arnold

Chipperfield

et al. 2020

Geophysical Research Letters

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The decline in Amazonian deforestation rates and biomass burning activity (2001–2012) has been shown to reduce air pollutant emissions (e.g., aerosols) and improve regional air quality. However, in the Cerrado region (savannah grasslands in northeastern Brazil), satellite observations reveal increases in fire activity and tropospheric column nitrogen dioxide (an ozone precursor) during the burning season (August‐October, 2005–2016), which have partially offset these air quality benefits. Simulations from a 3‐D global chemistry transport model (CTM) capture this increase in NO2 with a surface increase of ~1 ppbv per decade. As there are limited long‐term observational tropospheric ozone records, we utilize the well‐evaluated CTM to investigate changes in ozone. Here, the CTM suggests that Cerrado region surface ozone is increasing by ~10 ppbv per decade. If left unmitigated, these positive fire‐sourced ozone trends will substantially increase the regional health risks and impacts from expected future enhancements in South American biomass burning activity under climate change.

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Section: Resultsmentioning

confidence: 99%

“…de Araújo et al, 2019). In comparison, TCNO 2 hot spots over large cities (e.g., São Paulo and Rio De Janeiro) show limited seasonality, remaining above 5.0 × 10 15 molecules per cm 2 year-round.…”

mentioning

confidence: 91%

Substantial Increases in Eastern Amazon and Cerrado Biomass Burning‐Sourced Tropospheric Ozone

Pope

Arnold

Chipperfield

et al. 2020

Geophysical Research Letters

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“…6 shows the LULC classes map derived from the 100 m PROBA-V mosaic of the year 2015 for the entire country. This map shows the agricultural frontiers from western Bahia State [60], south of Piauí and Maranhão States (MATOPIBA agricultural frontier) [61], southwest of Goiás State, and central part of Mato Grosso State. The fish-bone type, clear-cut deforestation mostly found in the states of Rondônia and Pará [62], and the large spot of savanna formations in the north of Roraima State [63] were also clearly detected.…”

Section: Resultsmentioning

confidence: 99%

Discriminating Land Use and Land Cover Classes in Brazil Based on the Annual PROBA-V 100 m Time Series

Shimabukuro

Arai

Duarte

et al. 2020

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Brazil, with more than 8 million km 2 , presents six different biomes, ranging from natural grasslands (Pampa biome) to tropical rainfall forests (Amazônia biome), with different land-use types (mostly pasturelands and croplands) and pressures (mainly in the Cerrado biome). The objective of this article is to present a new method to discriminate the most representative land use and land cover (LULC) classes of Brazil, based on the PROBA-V images. The images were converted into vegetation, soil, and shade fraction images by applying the linear spectral mixing model. Then, the pixel-based, highest proportion, annual mosaics of the fraction images, and their corresponding standard deviation images were derived and classified using the random forest algorithm. The following LULC classes were considered: forestlands, shrublands, grasslands, croplands, pasturelands, water bodies, and others. An agreement analysis was conducted with two available LULC maps derived from the Landsat satellite, the MapBiomas, and the Finer Resolution Observation and Monitoring-Global Land Cover (FROM-GLC) projects. Forestlands (412 million ha) and pasturelands (242 million ha) were the two most representative LULC classes; and croplands accounted for 30 million ha. The results presented an overall agreement of 69% and 58% with the MapBiomas and FROM-GLC projects, respectively. The proposed method is a good alternative to support operational projects of LULC map production that are important for planning biodiversity conservation or environmentally sustainable land occupation.

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“…The northern region of Mato Grosso State, Brazil, comprises the southern portion of the Amazon and its transition zone with the Cerrado biome. Due to the advance of the agricultural frontiers and livestock husbandry and the expansion of cities, the conversion of natural habitats into economically active areas has been accelerated in this region, causing sudden changes in the landscape (Araújo et al 2019, Renó & Novo 2019. The current result is a landscape mosaic consisting of remnants of natural vegetation isolated in fragments, both in urban and rural areas.…”

Section: Introductionmentioning

confidence: 99%

Ground spiders (Arachnida, Araneae) associated with urban forest fragments in southern Amazon

et al. 2020

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Forest fragments in urban areas comprise important habitats for a wide variety of species, however, conservationist policies for their maintenance and conservation are still incipient. This study examined the richness and abundance of the ground-spider assemblage in five forest fragments, with areas ranging between 18.5 and 103.98 ha, in the urban perimeter of Sinop, northern Mato Grosso State, southern Amazon region of Brazil. Sampling was carried out using the mini-Winkler extractor and pitfall traps in the dry (July) and rainy (November) seasons of 2017. All fragments were characterized in relation to the area and the Index of Biotic Integrity (IBI), to assess the effect of these variables on richness and abundance of soil spider assemblage. A total of 653 spiders were sampled, corresponding to 25 families and 52 species. Salticidae, Theridiidae, Lycosidae, Linyphiidae, Oonopidae and Symphytognathidae were the most abundant families (63.3% of the total sample). The assemblage was characterized by the dominance of hunting spiders (393 ind.; 60.2%) over web-building spiders (260 ind.; 39.8%). Greater spider abundance and richness was obtained during the rainy season (517 ind.; 79.2%; 41 spp.) as compared with the dry season (136 ind.; 20.8%; 24 spp.). Only 13 species occurred in dry and rainy season. Two species were recorded for the first time in the Amazon region, namely, Anapistula aquytabueraRheims & Brescovit, 2003 (Symphytognathidae) and Opopaea concolor (Blackwall, 1859) (Oonopidae). Species richness was not affected by IBI and area of fragment. Although the statistical model is not significant, species richness increases slightly with IBI and area of fragment. Similarly, abundance of spiders was not affected by IBI and area of fragment. Regardless of the area size, all evaluated forest fragments showed a low and regular IBI, demonstrating that these habitats have suffered with the pressures inherent from the urban perimeter, including the constant expansion of human occupation as well as misuse by the population. Nonetheless, these same fragments revealed considerable richness of species of ground spiders and can thus be categorized as important habitats for the maintenance of regional biodiversity. Therefore, action strategies must be set out to ensure their conservation.

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Spatiotemporal dynamics of soybean crop in the Matopiba region, Brazil (1990–2015)

Cited by 107 publications

References 13 publications

Substantial Increases in Eastern Amazon and Cerrado Biomass Burning‐Sourced Tropospheric Ozone

Substantial Increases in Eastern Amazon and Cerrado Biomass Burning‐Sourced Tropospheric Ozone

Discriminating Land Use and Land Cover Classes in Brazil Based on the Annual PROBA-V 100 m Time Series

Ground spiders (Arachnida, Araneae) associated with urban forest fragments in southern Amazon

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