52 research outputs found

    Loss and Gain in Mangrove Surrounding the Lençóis Maranhense National Park: An Integrated Approach Using Remote Sensing and SIG Data

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    Brazil harbors the second largest expanse of mangroves in the world, trailing only behind Indonesia. In a regional context, the state of Maranhão stands out, encompassing approximately 36% of Brazil’s total mangrove area, including a portion located on the eastern coast in the Lençóis Maranhenses. This study played a crucial role in identifying the areas of gain, loss, and stability in the mangroves surrounding the Lençóis Maranhenses National Park over a historical period spanning from 1985 to 2019. The study provided detailed maps depicting spatial changes, such as migration and attenuation that occurred in the mangroves due to the influence of aeolian dunes and wind patterns in the region. This long-term analysis, the first of its kind to examine the annual expansion of forest loss in the remaining mangroves around the Lençóis Maranhenses in recent decades, revealed a reduction in the central mangrove areas between 1985 and 2019. This decline can be attributed not only to intense tourist activity and climate change but also to the movement and invasion of sand dunes in certain areas, as observed near the villages of Caburé and Paulino Neves (Pequenos Lençóis) in December2022. Wind plays a fundamental role as a transformative agent in the local landscape. Through the analysis of wind roses using ERA5 reanalysis data and meteorological stations from the Aeronautics (São Luís and Parnaíba), it was possible to identify and characterize the prevalence of northeast trade winds in the Lençóis Maranhenses region during the years 1985 to 2019, with average speeds ranging from 6 to 8 m/s. The advancement of dunes onto the mangroves surrounding the Lençóis Maranhenses results in burial, reduction, and even migration of mangrove patches. Additionally, over the years, population growth and increasing tourism pressure along the banks of the Preguiças River have drawn attention to the need to implement control and conservation measures in the mangroves to prevent further disturbances in this environment

    DIMENSÕES QUALITATIVAS E QUANTITATIVAS DO TRABALHO HOSPITALAR: INTERFACE COM A CULTURA DE SEGURANÇA DO PACIENTE

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    Objetivou-se analisar a cultura de segurança do paciente entre a equipe multiprofissional hospitalar quanto às dimensões que tratam do qualitativo organizacional e o quantitativo de pessoal. Procedeu-se pesquisa descritiva, quantitativa, com a participação de 71 profissionais de um hospital de ensino público do interior do Paraná, que responderam ao questionário “Hospital Survey on Patient Safety Culture”. A análise estatística descritiva foi procedida às dimensões de aprendizado organizacional (qualitativa) e dimensão de pessoal (quantitativa) do referido instrumento. A maioria (67,6%) dos sujeitos legitimou percepção favorável ao aprendizado organizacional contínuo, contudo, 91,6% dos profissionais sinalizaram que o hospital empregador não propicia quantitativo adequado de pessoal para o atendimento seguro, além das pessoas estarem expostas à elevada carga de trabalho e continuamente atuarem sob tensão. Concluiu-se que, através desta dualidade na percepção dos participantes, fica evidente a maior e melhor atenção das lideranças à provisão de capital humano adequado no serviço. Descritores: Segurança do Paciente; Cultura Organizacional; Downsizing Organizacional; Gestão da Qualidade; Administração Hospitalar.

    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

    Pervasive gaps in Amazonian ecological research

    Get PDF

    Pervasive gaps in Amazonian ecological research

    Get PDF
    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

    Efeito de doses de rejeito de caulim em solo sódico no desenvolvimento inicial da mamoneira, Ricinus communis

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    The work was accomplished at Greenhouse of the laboratory of the University of Agronomy of Pombal, with objective of evaluating the effect of doses of the waste part of product of caulim in sodic soil in the initial development of the mammon. The used seeds were of cultivating BRS 149 (Native of northeastern Brazil). Soil of the perimeter Irrigated Engineer Arco Verde was used located in the municipal of Condado - Paraíba. It was used six treatments with doses growing of the waste part of product (0, 10, 20, 30, 40 and 50%); an absolute witness with a normal soil, and another with sodic soil corrected with agricultural plaster. After 45 days of experiment from the period of incubation of the samples to the last score plantlets and determination of the biometric, it was observed that the applications of the waste part of product of caulim in the doses from 10 to 30% they indicated to be more efficient for the percentile of germination variables and index of germination speed when compared to the applications of 40 and 50%. For the variable plantlets height a statistical difference was verified when compared with the treatments normal soil and corrected with plaster, but for the percentile from 0 to 50% of the waste part of product of caulim there was not significant difference, the variable stem diameter and number of leaves didn't already present significant difference.O trabalho foi conduzido em casa de vegetação do laboratório da Faculdade de Agronomia de Pombal, com objetivo foi avaliar o efeito de doses de rejeito de caulim em solo sódico no desenvolvimento inicial da mamoneira. As sementes utilizadas foram da cultivar BRS 149 (Nordestina). Utilizou-se solo do perímetro irrigado Engenheiro Arco verde localizado no município de Condado-PB. Utilizou-se seis tratamentos com doses crescentes de rejeito (0, 10, 20, 30, 40 e 50%),; uma testemunha absoluta com um solo normal, e outra com solo sódico corrigido com gesso agrícola. Após 45 dias de experimento desde o período de incubação das amostras até a ultima contagem de plântulas e determinação da biometria, observou-se que as aplicações de rejeito de caulim nas doses de 10 a 30% indicavam ser mais eficientes paras as variáveis percentual de germinação e índice de velocidade de germinação quando comparadas às aplicações de 40 e 50%. Para a variável altura de plântula constatou-se uma diferença estatística quando comparado com os tratamentos solo normal e corrigido com gesso, mas para os percentuais de 0 a 50% de rejeito de caulim não houve diferença significativa, já as variáveis diâmetro de caule e número de folhas não apresentaram diferença significativa.El trabajo fue conducido en casa de vegetação del laboratorio de la Facultad de Agronomia de Pombal, con objetivo fue evaluar el efecto de dosis de rechazo de caulim en suelo sódico en el desarrollo inicial de la mamoneira. Las semillas utilizadas fueron de la cultivar BRS 149 (Nordestina). Se utilizó suelo del perímetro irrigado Ingeniero Arco verde localizado en el municipio de Condado-PB. Se utilizó seis tratamientos con dosis crecientes de rechazo (0, 10, 20, 30, 40 y 50%),; una testigo absoluta con un suelo normal, y otra con suelo sódico corregido con gesso agrícola. Después de 45 días de experimento desde el periodo de incubação de las muestras hasta a ultima cuenta de plântulas y determinación de la biometria, se observó que las aplicaciones de rechazo de caulim en las dosis de 10 a 30% indicaban ser más eficientes paras las variabais porcentual de germinação y índice de velocidad de germinação cuando comparadas a la aplicaciones de 40 y 50%. Para la variável altura de plântula se constató una diferencia estadística cuando comparado con los tratamientos suelo normal y corregido con gesso, pero para los porcentuales de 0 a 50% de rechazo de caulim no hube diferencia significativa, ya las variabais diâmetro de caule y número de hojas no presentaron diferencia significativa

    EFEITO DE DOSES DE REJEITO DE CAULIM EM SOLO SÓDICO NO DESENVOLVIMENTO INICIAL DA MAMONEIRA (Ricinus communis)

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    O trabalho foi conduzido em casa de vegetação do laboratório da Faculdade de Agronomia de Pombal, com objetivo foi avaliar o efeito de doses de rejeito de caulim em solo sódico no desenvolvimento inicial da mamoneira. As sementes utilizadas foram da cultivar BRS 149 (Nordestina). Utilizou-se solo do perímetro irrigado Engenheiro Arco verde localizado no município de Condado-PB. Utilizou-se seis tratamentos com doses crescentes de rejeito (0, 10, 20, 30, 40 e 50%),; uma testemunha absoluta com um solo normal, e outra com solo sódico corrigido com gesso agrícola. Após 45 dias de experimento desde o período de incubação das amostras até a ultima contagem de plântulas e determinação da biometria, observou-se que as aplicações de rejeito de caulim nas doses de 10 a 30% indicavam ser mais eficientes paras as variáveis percentual de germinação e índice de velocidade de germinação quando comparadas às aplicações de 40 e 50%. Para a variável altura de plântula constatou-se uma diferença estatística quando comparado com os tratamentos solo normal e corrigido com gesso, mas para os percentuais de 0 a 50% de rejeito de caulim não houve diferença significativa, já as variáveis diâmetro de caule e número de folhas não apresentaram diferença significativa
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