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

Em busca do referente, às voltas com a polissemia dos sonhos: a questão em Freud, Stuart Mill e Lacan In search of the referent, dealing with dream's polysemy: the question in Freud, Stuart Mill and Lacan

Este texto examina a influência do associacionismo nominalista de John Stuart Mill no pensamento freudiano e, dialogando estas concepções com as formulações da segunda tópica, delineia um ângulo possível de articulação das mesmas com a inovação lacaniana.<br>This paper examines the influence of John Stuart Mill's associationism in Freudian thought. Stablishing a dialogue of these conceptions with death instinct's definition, it presents a possible point of view for their articulation with the Lacanian inovation