Reducing Amazon Deforestation through Agricultural Intensification in the Cerrado for Advancing Food Security and Mitigating Climate Change

Cerri, Carlos Eduardo Pellegrino; Cerri, Carlos Clemente; Maia, Stoécio Malta Ferreira; Cherubin, Maurício Roberto; Feigl, Brigitte Josefine; Lal, Rattan

doi:10.3390/su10040989

Cited by 73 publications

(36 citation statements)

References 36 publications

(30 reference statements)

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“…There is also a link between Climate Change and social instability [13] since it can potentially affect food security [14], water availability (e.g., the Syrian conflict is at least partially caused by a long drought [15]) and housing [13]. More frequent extreme weather events such as hurricanes, superstorms or typhoons will damage infrastructures in human settlements [16].…”

Section: Introductionmentioning

confidence: 99%

Improvement on Social Representation of Climate Change through a Knowledge-Based MOOC in Spanish

et al. 2019

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Climate Change is the most important threat to our society and all species on Earth. Large alterations in the climate are affecting every aspect of our society and in order to limit this impact we must decarbonize the economy before 2050. Although science presents solid evidence on the magnitude of the problem and outlines precisely the consequences, people do not act accordingly and do not consider this issue a priority for their survival. The reason behind this paradox might be a non-appropriate Social Representation of Climate Change in society as the Social Representation conditions and forms the response of the society. In this paper, we extend previous investigations of how this Social Representation is formed in order to find ways to improve it through a Massive Online Open Course on the Science of Climate Change. Using a validated questionnaire, we investigated the knowledge dimension of the Social Representation of Climate Change in a group of students of a MOOC on Climate Change. A pre- and posttest revealed general improvements in all the categories that were considered in this study. A detailed analysis showed different degrees of improvement for different groups, providing new insights in the efficiency of knowledge-based online courses. Well designed Massive Online Open Courses, based on scientific evidence, targeted to the general public might improve the Social Representation of Climate Change, which may in turn trigger awareness and an effective mobilization to address this important and urgent topic.

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Section: Introductionmentioning

confidence: 99%

Improvement on Social Representation of Climate Change through a Knowledge-Based MOOC in Spanish

et al. 2019

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“…One of today's challenges is to mitigate the risks of climate change, variability and extreme climate events for food security [1]. The term food security is considered as a situation in which people at all times obtain physical, social and economic access to sufficient, safe and nutritious food, thus satisfying the nutritional needs of an active and healthy life [2].…”

Section: Introductionmentioning

confidence: 99%

“…However, the native Cerrado formations are being intensely degraded by anthropic activity, either by f crops or pastures, removal of wood but mainly the lack of knowledge and appreciation of the economic potential of plant species. In addition to non-compliance with environmental legislation [1]. Thus, when the ecosystem suffers aggression, the recovery of vegetation by succession may not occur and/or be very slow.…”

Section: Introductionmentioning

confidence: 99%

Morphobiometry and Ecophysiology of Caryocar coriaceum Wittm. (Pequi) in Cerrado Areas of Northeast Brazil

Rodrigues

Ferreira

Oliveira

2019

JEAI

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Many studies have reported that native plant species can contribute to ensuring food security in the world. Among the Brazilian species, the Caryocar coriaceum has a high utility value for the communities in Northeast Brazil but it is under threat due to the degradation of the Cerrado savannah. One way to mitigate threats is to produce large-scale seedlings. Thus, it was attempted to evaluate methods to overcome dormancy of C. coriaceum to increase and standardize germination and to analyze its morphobiometric characteristics. The fruits were weighed, measured and subjected to the selected treatments. Tests were performed to overcome dormancy The fruits were planted at a depth of 5 cm. The results showed that the fruits of C. coriaceum presented asymmetric frequency distribution with high variability for the characteristic of weight. However, a marked variation of the literature data was found. About the germination treatments tested in the laboratory, none was effective in overcoming dormancy, which may be due to the presence of inhibitory substances. Concerning seed planting, a germination index of 35% was recorded after 12 months. The conclusions suggest that there is a high phenotypic variability of the genus in the cerrado and probably the presence of germination inhibitors in seeds of this species, which should be addressed to ensure germination.

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“…Adicionalmente, há também uma contundente perda de água, com perda de nutrientes importantes como nitrogênio e o fósforo, perda de água no solo; repelência à água causada pelas cinzas; alta mineralização do nitrato; perda de nitrogênio, fósforo, enxofre e cálcio (DIAS-FILHO, 2011). Por outro lado, é também importante lembrar que o manejo sustentável das pastagens minimiza significativamente os impactos causados pela conversão floresta-pastagem (MAIA et al, 2009;MAIA et al, 2013;SILVA et al, 2014;CERRI et al, 2018).…”

Section: Fracionamento Físico Da Mosunclassified

“…O melhoramento da pastagem além de aumentar o estoque de C no solo (CERRI et al, 2007;MAIA et al, 2009;BUSTAMANTE et al, 2012;CERRI et al, 2018) também é necessário para melhorar a produtividade. Silva et al (2004) Rosa et al (2005), Favoretto et al (2008), Freitas et al (2017) e Oliveira (2018).…”

Section: Fracionamento Físico Da Mosunclassified

Estoque de carbono e qualidade da matéria orgânica do solo em diferentes sistemas agropecuários em Belterra, Amazônia Oriental

Chaves¹

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The aim of this work was to investigate the carbon stock and soil organic matter (MOS) quality after the conversion from forest-pasture and forest-soybean in Belterra-PA. The climate there is hot and humid, and the annual average temperature is 25.3 °C, while rainfall averages are 1943 mm, concentrated between January and June. The soil of the region is classified as very clayey yellow Latosol. In this research we investigated: (i) a soybean areas in minimum tillage with similar managements-18 years old; (ii) a soybean areas in minimum tillage with similar managements-8 years old; (iii) a nominal pasture (implanted four years ago, managed with fire, without soil fertility correction and managed with extensive livestock) and an improved pasture (implanted six years ago, managed with crop rotation and soil fertility correction by a period of three years. Subsequently, it only remained homogeneous pasture, where the beef cattle herd is managed in a rotational system); (iv) an area of dense ombrophylous forest, used as the reference. Soil samples were collected at six different equidistant points every 50 m. Deformed samples were collected from 0-10, 10-20, 20-30, 30-50, 50-80, 80-100 cm depths and undisturbed samples were collect until 50 cm depth. We estimated the carbon content, soil density, carbon stocks and the C:N ratio. Natural abundance of 13C:12C was used to estimate the amount of carbon from grasses incorporated into the soil. The quality of the MOS was evaluated by humification index and by its physical fractionation. The same soil layers from different areas were compared by analysis of variance and Tukey test (5%). Both pastures were compared between them and in relation to forest area and soybean crops were also compared between them and the forest area. Soil bulk density increased significantly after forest to pasture conversion and forest to soybean conversion. The carbon stock accumulated in the 0-50 cm layer and the degree of humification of the MOS did not differ between the areas. This similarity may be the result of the high clay content presented in this soil, which leads to organic matter slow decomposition, even after changes in vegetation cover. On the soybean areas, the carbon management index was lower in the longer cultivated area, indicating a loss of carbon in this soil. On pasture areas, improved pasture incorporated more carbon from C4 plants in the soil in relation to the nominal pasture, reflecting a positive effect of the rational management on this production system.

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Reducing Amazon Deforestation through Agricultural Intensification in the Cerrado for Advancing Food Security and Mitigating Climate Change

Cited by 73 publications

References 36 publications

Improvement on Social Representation of Climate Change through a Knowledge-Based MOOC in Spanish

Improvement on Social Representation of Climate Change through a Knowledge-Based MOOC in Spanish

Morphobiometry and Ecophysiology of Caryocar coriaceum Wittm. (Pequi) in Cerrado Areas of Northeast Brazil

Estoque de carbono e qualidade da matéria orgânica do solo em diferentes sistemas agropecuários em Belterra, Amazônia Oriental

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