Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time, and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space. While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes, vast areas of the tropics remain understudied. In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity, but it remains among the least known forests in America and is often underrepresented in biodiversity databases. To worsen this situation, human-induced modifications 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, 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

Condições sociais da constituição do desenho infantil Social conditions of the constitution of infantile drawing

Este trabalho focaliza algumas das condições sociais da produção da atividade gráfica. Os dados foram coletados através de vídeo-gravações e de desenhos de crianças pré-escolares, em situações de produção gráfica, em sala de aula, durante um ano letivo. Baseada na abordagem histórico-cultural, a análise buscou verificar as relações entre a fala e o desenho, assim como as ações das crianças com e sobre as possibilidades funcionais dos materiais empregados na atividade gráfica e as mediações entre pares e professora. De acordo com os resultados, o impacto dos eventos interativos, em especial os processos de linguagem na atividade de desenho, indicam a necessidade de revisão da ênfase maturacionista nas atuais discussões teóricas sobre o tema.<br>This essay focuses on some of the social conditions of the production of graphic activity. The data was collected through video recordings and of drawings made by pre-school children involved in classroom graphic activities during the school year. Based on a historic-cultural approach, this analysis strives to verify the relation between speech and drawing productions as well as the childrens' interaction with eachother and with the teacher. According to the results, the impact of interactive events, especially the process of language within the graphic activities, indicates a necessity of revision of the maturacionist emphasis of the theoretical discussions about the theme