Marcellus M Caldas
Dados Biográficos
| ID | 79439 |
|---|---|
| NOME | Marcellus M Caldas |
| PRENOMES | Marcellus M |
| SOBRENOME | Caldas |
| ASSINATURA | CALDAS M M |
| AFILIAÇÕES | Kansas State University |
| ORCID | 0000-0003-3086-7054 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 23 |
| TOTAL DE CITAÇÕES | 268 |
| TOTAL COMO AUTOR | 23 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2002 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 9 |
Wheat expansion in the Brazilian Cerrado
Wheat is widely recognized as an essential food for both global and Brazilian food security. Brazil has a long-standing structural dependence on wheat imports, making increases in domestic production crucial for reducing this reliance. In an effort to mitigate this dependence, wheat cultivation has expanded into the Brazilian Cerrado in recent decades, creating new opportunities in nontraditional wheat-growing regions. This study analyzes the mai…
Land Use and Land Cover Classification in the Northern Region of Mozambique Based on Landsat Time Series and Machine Learning
Accurate land use and land cover (LULC) mapping is essential for scientific and decision-making purposes. The objective of this paper was to map LULC classes in the northern region of Mozambique between 2011 and 2020 based on Landsat time series processed by the Random Forest classifier in the Google Earth Engine platform. The feature selection method was used to reduce redundant data. The final maps comprised five LULC classes (non-vegetated are…
Produtividade da cana-de-açúcar em Mato Grosso do Sul e Goiás
Baseado na teoria da Visão Baseada em Recursos (VBR), este trabalho analisou como os recursos internos das propriedades rurais de cana-de-açúcar nos estados de Mato Grosso do Sul e Goiás influenciam seu desempenho agrícola. Foi um estudo aplicado de caráter exploratório, envolvendo uma pesquisa de campo com 148 produtores rurais. A análise quantitativa revelou diferenças entre os padrões de produção de cana-de-açúcar nas duas regiões de estudo
Geographical milk redistribution in Paraná State, Brazil
Exploring the policy and social factors fueling the expansion and shift of sugarcane production in the Brazilian Cerrado
Predictors of compliance with tornado warnings issued in Joplin, Missouri, in 2011
Joplin, a city in the southwest corner of Missouri, United States, suffered an EF-5 tornado in the late afternoon of 22 May 2011. This event, which claimed the lives of 162 people, represents the deadliest single tornado to strike the US since modern record-keeping began in 1950. This study examines the factors associated with responses to tornado warnings. Based on a post-tornado survey of survivors in Joplin, it reveals that tornado warnings we…
Fragmentation Patterns in Land Reform Settlements in the Brazilian Amazon
Direct action land reform (DALR) and settlement formation are new drivers of deforestation in the Brazilian Amazon. However, until now no research has paid attention to fragmentation patterns and the social processes that lead to them. This article analyzes two types of settlements, spontaneous and social movement organization-led settlements. The study uses neutral landscape models (NLMs) to compare simulated landscapes with the real fragmentati…
Agro-terrorism? The causes and consequences of the appearance of witch’s broom disease in cocoa plantations of southern Bahia, Brazil”
Contentious Land Change in the Amazon's Arc of Deforestation
Land change in the Amazon is driven by numerous factors including fiscal incentives, infrastructure, transportation costs, migration, and household decision making. Largely missing from the story to date, however, is the role of contentious social processes, including contention over land resources. By employing a case study of land conflict over a largeholding in southeastern Pará, Brazil, and a regional-scale statistical model, we describe cont…
Statistical confirmation of indirect land use change in the Brazilian Amazon
As mudanas climticas de origem antrpica apresentam-se como um dos principais desafios deste sculo. Ao considerar a participao do setor "Agricultura, Florestas e Outros Usos do Solo -AFOLU" nas emisses globais de carbono, estimada em 24 % do total, o envolvimento deste setor nas aes de mitigao as mudanas climticas fundamental. Portanto, ao considerar que cerca de 22% das emisses de carbono no Brasil esto associadas ao desmatamento e degradao flore…
The social viability and environmental sustainability of direct action land reform settlements in the Amazon
The Amazonian Theater of Cruelty
This article deploys the “Theater of Cruelty,” articulated by the French surrealist Antonin Artaud, as a conceptual heuristic to explicate the empirical world of contemporary Amazonia, in particular the “South of Pará,” a site of land war and forest destruction, which the Theater of Cruelty posits as a single dramatic event. We pursue this explication via direct physical immersion, in the form of a travelogue following State Road PA-150 from Mara…
Intraregional Migration, Direct Action Land Reform, and New Land Settlements in the Brazilian Amazon
This article analyses migration histories of residents in rural settlements of the Brazilian Amazon that resulted from direct action land reform (DALR), which involves organised land occupations. Our analysis evaluates two hypotheses. The 'urban migration' expectation asserts that urban experience is important for DALR participation, which links rural and urban areas via migration for land occupations. The 'DALR efficacy' hypothesis argues that m…
Doing it for Themselves
Ranching and the new global range
Accuracy Assessment for a Simulation Model of Amazonian Deforestation
This article describes a quantitative assessment of the output from the Behavioral Landscape Model (BLM), which has been developed to simulate the spatial pattern of deforestation (i.e. forest fragmentation) in the Amazon basin in a manner consistent with human behavior. The assessment consists of eighteen runs for a section of the Transamazon Highway in the lower basin, where the BLM's simulated deforestation map for each run is compared to a re…
Theorizing Land Cover and Land Use Change
This article addresses deforestation processes in the Amazon basin, using regression analysis to assess the impact of household structure and economic circumstances on land use decisions made by colonist farmers in the forest frontiers of Brazil. Unlike many previous regression-based studies, the methodology implemented analyzes behavior at the level of the individual property, using both survey data and information derived from the classificatio…
The Amazon Land War in the South of Pará
The South of Pará, located in the heart of the Brazilian Amazon, has become notorious for violent land struggle. Although land conflict has a long history in Brazil, and today impacts many parts of the country, violence is most severe and persistent here. The purpose of this article is to examine why. Specifically, we consider how a particular Amazonian place, the so-called South of Pará, has come to be known as Brazil's most dangerous badland. W…
Unofficial Road Building in the Amazon
Roads have manifold social and environmental impacts, including regional development, social conflicts and habitat fragmentation. 'Road ecology' has emerged as an approach to evaluate the various ecological and hydrological impacts of roads. This article aims to complement road ecology by examining the socio-spatial processes of road building itself. Focusing on the Brazilian Amazon, a heavily-studied context due to forest fragmentation by roads,…
Land‐Cover and Land‐Use Change in the Brazilian Amazon
Tropical deforestation is a significant driver of global environmental change, given its impacts on the carbon cycle and biodiversity. Loss of the Amazon forest, the focus of this article, is of particular concern because of the size and the rapid rate at which the forest is being converted to agricultural use. In this article, we identify what has been the most important driver of deforestation in a specific colonization frontier in the Brazilia…
Beyond Population and Environment
Loggers and Forest Fragmentation
Although a large literature now exists on the drivers of tropical deforestation, less is known about its spatial manifestation. This is a critical shortcoming in our knowledge base since the spatial pattern of land-cover change and forest fragmentation, in particular, strongly affect biodiversity. The purpose of this article is to consider emergent patterns of road networks, the initial proximate cause of fragmentation in tropical forest frontier…
Land Use and Land Cover Change in Forest Frontiers
Tropical deforestation remains a critical issue given its present rate and a widespread consensus regarding its implications for the global carbon cycle and biodiversity. Nowhere is the problem more pronounced than in the Amazon basin, home to the world’s largest intact, tropical forest. This article addresses land cover change processes at household level in the Amazon basin, and to this end adapts a concept of domestic life cycle to the current…
Ranching and the new global range
Land Use and Land Cover Change in Forest Frontiers
Tropical deforestation remains a critical issue given its present rate and a widespread consensus regarding its implications for the global carbon cycle and biodiversity. Nowhere is the problem more pronounced than in the Amazon basin, home to the world’s largest intact, tropical forest. This article addresses land cover change processes at household level in the Amazon basin, and to this end adapts a concept of domestic life cycle to the current…
The Amazon Land War in the South of Pará
The South of Pará, located in the heart of the Brazilian Amazon, has become notorious for violent land struggle. Although land conflict has a long history in Brazil, and today impacts many parts of the country, violence is most severe and persistent here. The purpose of this article is to examine why. Specifically, we consider how a particular Amazonian place, the so-called South of Pará, has come to be known as Brazil's most dangerous badland. W…
Theorizing Land Cover and Land Use Change
This article addresses deforestation processes in the Amazon basin, using regression analysis to assess the impact of household structure and economic circumstances on land use decisions made by colonist farmers in the forest frontiers of Brazil. Unlike many previous regression-based studies, the methodology implemented analyzes behavior at the level of the individual property, using both survey data and information derived from the classificatio…
Land‐Cover and Land‐Use Change in the Brazilian Amazon
Tropical deforestation is a significant driver of global environmental change, given its impacts on the carbon cycle and biodiversity. Loss of the Amazon forest, the focus of this article, is of particular concern because of the size and the rapid rate at which the forest is being converted to agricultural use. In this article, we identify what has been the most important driver of deforestation in a specific colonization frontier in the Brazilia…
Contentious Land Change in the Amazon's Arc of Deforestation
Land change in the Amazon is driven by numerous factors including fiscal incentives, infrastructure, transportation costs, migration, and household decision making. Largely missing from the story to date, however, is the role of contentious social processes, including contention over land resources. By employing a case study of land conflict over a largeholding in southeastern Pará, Brazil, and a regional-scale statistical model, we describe cont…
Doing it for Themselves
Beyond Population and Environment
Intraregional Migration, Direct Action Land Reform, and New Land Settlements in the Brazilian Amazon
This article analyses migration histories of residents in rural settlements of the Brazilian Amazon that resulted from direct action land reform (DALR), which involves organised land occupations. Our analysis evaluates two hypotheses. The 'urban migration' expectation asserts that urban experience is important for DALR participation, which links rural and urban areas via migration for land occupations. The 'DALR efficacy' hypothesis argues that m…
Accuracy Assessment for a Simulation Model of Amazonian Deforestation
This article describes a quantitative assessment of the output from the Behavioral Landscape Model (BLM), which has been developed to simulate the spatial pattern of deforestation (i.e. forest fragmentation) in the Amazon basin in a manner consistent with human behavior. The assessment consists of eighteen runs for a section of the Transamazon Highway in the lower basin, where the BLM's simulated deforestation map for each run is compared to a re…
Unofficial Road Building in the Amazon
Roads have manifold social and environmental impacts, including regional development, social conflicts and habitat fragmentation. 'Road ecology' has emerged as an approach to evaluate the various ecological and hydrological impacts of roads. This article aims to complement road ecology by examining the socio-spatial processes of road building itself. Focusing on the Brazilian Amazon, a heavily-studied context due to forest fragmentation by roads,…
Loggers and Forest Fragmentation
Although a large literature now exists on the drivers of tropical deforestation, less is known about its spatial manifestation. This is a critical shortcoming in our knowledge base since the spatial pattern of land-cover change and forest fragmentation, in particular, strongly affect biodiversity. The purpose of this article is to consider emergent patterns of road networks, the initial proximate cause of fragmentation in tropical forest frontier…
Agro-terrorism? The causes and consequences of the appearance of witch’s broom disease in cocoa plantations of southern Bahia, Brazil”
The Amazonian Theater of Cruelty
This article deploys the “Theater of Cruelty,” articulated by the French surrealist Antonin Artaud, as a conceptual heuristic to explicate the empirical world of contemporary Amazonia, in particular the “South of Pará,” a site of land war and forest destruction, which the Theater of Cruelty posits as a single dramatic event. We pursue this explication via direct physical immersion, in the form of a travelogue following State Road PA-150 from Mara…
Geographical milk redistribution in Paraná State, Brazil
Predictors of compliance with tornado warnings issued in Joplin, Missouri, in 2011
Joplin, a city in the southwest corner of Missouri, United States, suffered an EF-5 tornado in the late afternoon of 22 May 2011. This event, which claimed the lives of 162 people, represents the deadliest single tornado to strike the US since modern record-keeping began in 1950. This study examines the factors associated with responses to tornado warnings. Based on a post-tornado survey of survivors in Joplin, it reveals that tornado warnings we…
Exploring the policy and social factors fueling the expansion and shift of sugarcane production in the Brazilian Cerrado
Land Use and Land Cover Change in Forest Frontiers
Tropical deforestation remains a critical issue given its present rate and a widespread consensus regarding its implications for the global carbon cycle and biodiversity. Nowhere is the problem more pronounced than in the Amazon basin, home to the world’s largest intact, tropical forest. This article addresses land cover change processes at household level in the Amazon basin, and to this end adapts a concept of domestic life cycle to the current…
Loggers and Forest Fragmentation
Although a large literature now exists on the drivers of tropical deforestation, less is known about its spatial manifestation. This is a critical shortcoming in our knowledge base since the spatial pattern of land-cover change and forest fragmentation, in particular, strongly affect biodiversity. The purpose of this article is to consider emergent patterns of road networks, the initial proximate cause of fragmentation in tropical forest frontier…
Land‐Cover and Land‐Use Change in the Brazilian Amazon
Tropical deforestation is a significant driver of global environmental change, given its impacts on the carbon cycle and biodiversity. Loss of the Amazon forest, the focus of this article, is of particular concern because of the size and the rapid rate at which the forest is being converted to agricultural use. In this article, we identify what has been the most important driver of deforestation in a specific colonization frontier in the Brazilia…
Beyond Population and Environment
Accuracy Assessment for a Simulation Model of Amazonian Deforestation
This article describes a quantitative assessment of the output from the Behavioral Landscape Model (BLM), which has been developed to simulate the spatial pattern of deforestation (i.e. forest fragmentation) in the Amazon basin in a manner consistent with human behavior. The assessment consists of eighteen runs for a section of the Transamazon Highway in the lower basin, where the BLM's simulated deforestation map for each run is compared to a re…
Theorizing Land Cover and Land Use Change
This article addresses deforestation processes in the Amazon basin, using regression analysis to assess the impact of household structure and economic circumstances on land use decisions made by colonist farmers in the forest frontiers of Brazil. Unlike many previous regression-based studies, the methodology implemented analyzes behavior at the level of the individual property, using both survey data and information derived from the classificatio…
The Amazon Land War in the South of Pará
The South of Pará, located in the heart of the Brazilian Amazon, has become notorious for violent land struggle. Although land conflict has a long history in Brazil, and today impacts many parts of the country, violence is most severe and persistent here. The purpose of this article is to examine why. Specifically, we consider how a particular Amazonian place, the so-called South of Pará, has come to be known as Brazil's most dangerous badland. W…
Unofficial Road Building in the Amazon
Roads have manifold social and environmental impacts, including regional development, social conflicts and habitat fragmentation. 'Road ecology' has emerged as an approach to evaluate the various ecological and hydrological impacts of roads. This article aims to complement road ecology by examining the socio-spatial processes of road building itself. Focusing on the Brazilian Amazon, a heavily-studied context due to forest fragmentation by roads,…
Ranching and the new global range
Doing it for Themselves
Intraregional Migration, Direct Action Land Reform, and New Land Settlements in the Brazilian Amazon
This article analyses migration histories of residents in rural settlements of the Brazilian Amazon that resulted from direct action land reform (DALR), which involves organised land occupations. Our analysis evaluates two hypotheses. The 'urban migration' expectation asserts that urban experience is important for DALR participation, which links rural and urban areas via migration for land occupations. The 'DALR efficacy' hypothesis argues that m…
Statistical confirmation of indirect land use change in the Brazilian Amazon
As mudanas climticas de origem antrpica apresentam-se como um dos principais desafios deste sculo. Ao considerar a participao do setor "Agricultura, Florestas e Outros Usos do Solo -AFOLU" nas emisses globais de carbono, estimada em 24 % do total, o envolvimento deste setor nas aes de mitigao as mudanas climticas fundamental. Portanto, ao considerar que cerca de 22% das emisses de carbono no Brasil esto associadas ao desmatamento e degradao flore…
The social viability and environmental sustainability of direct action land reform settlements in the Amazon
The Amazonian Theater of Cruelty
This article deploys the “Theater of Cruelty,” articulated by the French surrealist Antonin Artaud, as a conceptual heuristic to explicate the empirical world of contemporary Amazonia, in particular the “South of Pará,” a site of land war and forest destruction, which the Theater of Cruelty posits as a single dramatic event. We pursue this explication via direct physical immersion, in the form of a travelogue following State Road PA-150 from Mara…
Contentious Land Change in the Amazon's Arc of Deforestation
Land change in the Amazon is driven by numerous factors including fiscal incentives, infrastructure, transportation costs, migration, and household decision making. Largely missing from the story to date, however, is the role of contentious social processes, including contention over land resources. By employing a case study of land conflict over a largeholding in southeastern Pará, Brazil, and a regional-scale statistical model, we describe cont…
Agro-terrorism? The causes and consequences of the appearance of witch’s broom disease in cocoa plantations of southern Bahia, Brazil”
Fragmentation Patterns in Land Reform Settlements in the Brazilian Amazon
Direct action land reform (DALR) and settlement formation are new drivers of deforestation in the Brazilian Amazon. However, until now no research has paid attention to fragmentation patterns and the social processes that lead to them. This article analyzes two types of settlements, spontaneous and social movement organization-led settlements. The study uses neutral landscape models (NLMs) to compare simulated landscapes with the real fragmentati…
Exploring the policy and social factors fueling the expansion and shift of sugarcane production in the Brazilian Cerrado
Predictors of compliance with tornado warnings issued in Joplin, Missouri, in 2011
Joplin, a city in the southwest corner of Missouri, United States, suffered an EF-5 tornado in the late afternoon of 22 May 2011. This event, which claimed the lives of 162 people, represents the deadliest single tornado to strike the US since modern record-keeping began in 1950. This study examines the factors associated with responses to tornado warnings. Based on a post-tornado survey of survivors in Joplin, it reveals that tornado warnings we…
Geographical milk redistribution in Paraná State, Brazil
Produtividade da cana-de-açúcar em Mato Grosso do Sul e Goiás
Baseado na teoria da Visão Baseada em Recursos (VBR), este trabalho analisou como os recursos internos das propriedades rurais de cana-de-açúcar nos estados de Mato Grosso do Sul e Goiás influenciam seu desempenho agrícola. Foi um estudo aplicado de caráter exploratório, envolvendo uma pesquisa de campo com 148 produtores rurais. A análise quantitativa revelou diferenças entre os padrões de produção de cana-de-açúcar nas duas regiões de estudo
Land Use and Land Cover Classification in the Northern Region of Mozambique Based on Landsat Time Series and Machine Learning
Accurate land use and land cover (LULC) mapping is essential for scientific and decision-making purposes. The objective of this paper was to map LULC classes in the northern region of Mozambique between 2011 and 2020 based on Landsat time series processed by the Random Forest classifier in the Google Earth Engine platform. The feature selection method was used to reduce redundant data. The final maps comprised five LULC classes (non-vegetated are…
Wheat expansion in the Brazilian Cerrado
Wheat is widely recognized as an essential food for both global and Brazilian food security. Brazil has a long-standing structural dependence on wheat imports, making increases in domestic production crucial for reducing this reliance. In an effort to mitigate this dependence, wheat cultivation has expanded into the Brazilian Cerrado in recent decades, creating new opportunities in nontraditional wheat-growing regions. This study analyzes the mai…
Geography (16 obras) · Conservation, Biodiversity, and Resource Management (14 obras) · Ecology (13 obras) · Amazon rainforest (12 obras) · Economics (11 obras) · Land use (10 obras) · Land Rights and Reforms (9 obras) · Agriculture (8 obras) · Agriculture, Land Use, Rural Development (8 obras) · Ecology (7 obras)