Studies using ecological niche models highlight the vulnerability of forest species to climate change. This work aimed to analyze the distribution of timber species Aspidosperma desmanthum, Cariniana micranta, Clarisia racemosa, Couratari oblongifolia, and Vouchysia guianensis, which are targets of deforestation, to predict the impacts of climate change and identify areas for their conservation in the Amazon. For this purpose, 37 environmental variables were used, including climatic and edaphic factors. The models were fitted using five algorithms, and their performance was evaluated by the metrics Area Under the Curve (AUC), True Skill Statistic, and Sorensen Index. The deforestation analysis was conducted using data accumulated over a period of 14 years. The study indicated that under the most pessimistic predictions, considering continued high emissions of greenhouse gases (GHGs) from the use of fossil fuels, SSP5–8.5, potential habitat loss for the studied species was more significant. Analyses of the species show that the Western Amazon has a greater climatic suitability area for the conservation of its genetic resources. Further study of the accumulated deforestation over 14 years showed a reduction in area for all species. Therefore, in situ conservation policies and deforestation reduction are recommended for the perpetuation of the analyzed forest species.

The areas of Amazonian floodplains have added ecological value to their multiple ecosystem services, including water supply, local climate regulation, biodiversity with a marked number of endemic species, and diversity of micro-habitat. Considering the importance of conserving these environments, this study aimed to analyze the behavior and delimit the areas of the natural distribution of forest species Alchornea castaneifolia (Willd.) A. Juss and Laetia corymbulosa(lowland low), Maquira coriacea (H.Karst.) C.C. Berg (Moraceae), and Ocotea cymbarumKunth (high floodplain), besides evaluating the potential impacts of climate change on the future distribution inferring on its conservation. The potential species distribution was modeled using Environmental Modelling & Software, by employing algorithms such as Bioclim, Domain, Maximum Entropy, Random Forests, and Support Vector Machine (SVM). The projections indicate that climate change threatens the occurrence of floodplain species. Under the SSP 585 scenario for both periods, the four species studied will lose areas of climatic adequacy until the end of the 21st century, especially in the Brazilian Amazon. The study shows the need to increase socio-environmental responsibility through conserving current protected areas in freshwater ecosystems and implementing new priority areas for conserving wetlands (Ramsar Sites) in the Amazon. Such measures are essential to ensure in situ conservation and protect them from habitat loss.

Para monitorar as mudanças da biodiversidade em relação as mudanças climáticas são utilizadas diferentes modelos de nicho ecológico (ENMs). A seleção do modelo mais adequado para uma espécie pode ser limitada por inúmeros fatores, como disponibilidade e resolução de dados. O objetivo do trabalho foi analisar 13 algoritmos e determinar um modelo consenso para simular a distribuição potencial de cinco espécies alvo do desmatamento na Amazônia: Aspidosperma desmanthum, Cariniana micranta, Clarisia racemosa, Couratari oblongifolia e Vouchysia guianensis. Para a construção dos ENMs foram utilizadas variáveis bioclimáticas e edáficas. As informações de cada espécie foram modeladas individualmente considerando os 13 algoritmos, posteriormente foi obtida a média de cada algoritmo para todas as espécies onde o desempenho foi analisado a partir das métricas: Area Under the Curve, True Skill Statistics e Índice de Sorensen. Com base nos resultados, observou-se que não existe um algoritmo ideal para todas as espécies, assim, foi proposto um modelo consenso a partir dos algoritmos Random Forest, Boosted Regression Trees, Support Vector Machine, Bayesian Gaussian Process e Maximum Entropy Default, uma vez que estes apresentaram melhor desempenho a partir da média. Concluímos é importante considerar as particularidades de cada espécie e a individualidade do conjunto de dados.

O presente artigo mostrará a criação de um sistema contra incêndio em áreas rurais. Durante a estação seca (meses de inverno no hemisfério sul) as regiões norte e centro-oeste os focos de incêndios em propriedades agrícolas, causando prejuízos incalculáveis ao meio ambiente e aos produtores. O sistema desenvolvido é um cercado composto por tubulações de água instaladas em torno da propriedade, o qual é conectado a juntamente a sensores Arduínos de temperatura e sensores de acionamento das bombas hidráulicas. Os sensores de temperatura são instalados junto ao cercado sendo os principais responsáveis pela ativação e desativação do sistema caso haja a presença de fogo próximos aos cercados (linha de defesa). À medida que a temperatura diminuí, configura-se a ausência de fogo e os sensores desligam as bombas hidráulicas e cessa o transporte de água. Além disso, o sistema é prático e pode ser acionado a qualquer momento através de tecnologias, como GPRS e Bluetooth, e ao mesmo tempo, envia alertas o proprietário em casos de novos focos de queimadas.

Environmental issues continue to be on a growing agenda around the world. A large part of the global concerns is focused on the Amazon, even though it leaves aside almost the entire human contingent that inhabits that space. Except for the Indians. They disregard that many of the harmful environmental impacts are practiced by family farmers because fire is their greatest technology and, in many cases, the only one. Therefore, the management of this territory must create mechanisms and instruments capable of promoting the region's sustainable development, bringing together environmental and social interests, which only can be done through laws. The Rural Environmental Registry (CAR, acronym in Portuguese) aims to implement sustainable public policies. Thus, this literature review study aims to show CAR's contribution to family farmers operating in the State of Amazonas from a legal and environmental point of view. The results show that a) it is necessary to know the main legal aspects of the CAR to understand its environmental importance, b) knowing each of the steps in the preparation of the registry allows this instrument to fulfill its environmental mission as a result of legal discipline, c) the simplification of the regime granted to family farmers and similar populations allows the legal requirements to be fulfilled by this essential human contingent in the Amazon and d) the rigorous execution of the CAR allowed for several conflicts of overlapping rural areas to be resolved, which benefited family farmers and populations equivalent, pioneers in these areas. The conclusion states that implementing the Brazilian forest code is essential for family farming agribusiness, requiring technical support. The CAR emerges as a fundamental instrument.

Qualis indexed Engineering Journal and Science Journal to publish paper with DOI, NAAS Rating and journal has global recognized indexing