Mapping density, diversity and species-richness of the Amazon tree flora

Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution

Consistent patterns of common species across tropical tree communities

Trees structure the Earth’s most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most tropical tree species. A focus on the common species may circumvent this challenge. Here we investigate abundance patterns of common tree species using inventory data on 1,003,805 trees with trunk diameters of at least 10 cm across 1,568 locations1,2,3,4,5,6 in closed-canopy, structurally intact old-growth tropical forests in Africa, Amazonia and Southeast Asia. We estimate that 2.2%, 2.2% and 2.3% of species comprise 50% of the tropical trees in these regions, respectively. Extrapolating across all closed-canopy tropical forests, we estimate that just 1,053 species comprise half of Earth’s 800 billion tropical trees with trunk diameters of at least 10 cm. Despite differing biogeographic, climatic and anthropogenic histories7, we find notably consistent patterns of common species and species abundance distributions across the continents. This suggests that fundamental mechanisms of tree community assembly may apply to all tropical forests. Resampling analyses show that the most common species are likely to belong to a manageable list of known species, enabling targeted efforts to understand their ecology. Although they do not detract from the importance of rare species, our results open new opportunities to understand the world’s most diverse forests, including modelling their response to environmental change, by focusing on the common species that constitute the majority of their trees

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

Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

Judicialização da saúde, acesso à justiça e a efetividade do direito à saúde Judicialization of the right to health, access to justice and the effectiveness of the right to health

Este artigo busca analisar os vínculos entre acesso à justiça e a efetividade de um dos aspectos do direito à saúde: o acesso aos medicamentos. Inicialmente, apresenta os desafios e as dificuldades na conceituação de saúde e do direito à saúde. Em seguida, analisa processos judiciais individuais que reivindicam dos entes públicos o fornecimento de medicamentos, no período de junho de 2007 a julho de 2008, no Tribunal de Justiça do Estado do Rio de Janeiro. Constata-se que a prescrição médica individual, a hipossuficiência econômica e a urgência dos demandantes ao acesso aos medicamentos são os principais respaldos das decisões judiciais analisadas, que determinam o fornecimento de medicamento conforme requerido pelos autores. Conclui-se que a efetividade do direito à saúde requer um conjunto de respostas políticas e ações governamentais mais amplas, e não meramente formais e restritas às ordens judiciais. As demandas judiciais não podem ser consideradas como principal instrumento deliberativo na gestão da assistência farmacêutica no SUS, mas admitidas como um elemento importante na tomada de decisão dos gestores e, muitas vezes, na melhoria do acesso aos medicamentos no âmbito do SUS. No contexto democrático brasileiro, a judicialização pode expressar reivindicações e modos de atuação legítimos de cidadãos e de instituições. O principal desafio é formular estratégias políticas e sociais orquestradas com outros mecanismos e instrumentos de garantia democrática, que aperfeiçoem os sistemas de saúde e de justiça com vistas à efetividade do direito à saúde.<br>This paper aims to analyze the links between access to justice and the effectiveness of one aspect of the right to health: access to medicines. It initially presents the challenges and difficulties in the conceptualization of health and right to health, and then analyzes individual lawsuits demanding medicines against public services, from June 2007 to July 2008, entered at Rio de Janeiro State Court of Appeals. It appears that the medical drug prescription, the economic conditions of the applicants and the urgency of access to medicines are the main factual basis of judicial sentences examined, which determine the supply of medicines as required by the authors. Finally, it concludes that the effectiveness of the right to health requires a set of policy and broader government actions, and not merely formal and restrictive court orders. The individual's claims cannot be considered as the main deliberative instrument in the management of pharmaceutical care in the Brazilian Health System, but accepted as an important element in the decision making of managers and, often, in the improvement of the access to medicines under National Health System. In the Brazilian democratic context, the judicialization can express demands and modes of action of citizens and legitimate institutions. Thus, the main challenge is to make policy and social strategies orchestrated with other mechanisms and instruments of democratic security, to improve health and justice systems in order to give effectiveness to the right to health