How can forest fragments support protected areas connectivity in an urban landscape in Brazil? (2022)
Como fragmentos florestais podem sustentar a conectividade de áreas protegidas em uma paisagem urbana no Brasil? Marina Pannunzio Ribeiro, Kaline de Mello e Roberta Averna Valente ABSTRACT Cities continue to grow worldwide, and the highly modified urban landscape becomes an inhospitable environment for many species because the natural vegetation cover is commonly fragmented, and the […]
Future projections of water level and thermal regime changes of a multipurpose subtropical reservoir (São Paulo, Brazil, 2021)
Projeções futuras de mudanças no nível de água e no regime térmico de um reservatório subtropical multiuso (São Paulo, Brasil, 2021) Carolina Cerqueira Barbosa, Maria do Carmo Calijuri, André Cordeiro Alves dos Santos, Robert Ladwig, Lais Ferrer, Amorim de Oliveira, Ana Carolina Sarmento Buarque ABSTRACT The increase in global air temperatures as well as variability […]
Multi-proxy approach involving ultrahigh resolution mass spectrometry and self-organising maps to investigate the origin and quality of sedimentary organic matter across a subtropical reservoir
Abordagem multiproxy envolvendo espectrometria de massa de ultra-alta resolução e mapas auto-organizados para investigar a origem e a qualidade da matéria orgânica sedimentar em um reservatório subtropical ABSTRACT Humic substances (HS) in sediments play an important role in carbon and nutrient biogeochemical cycles and fate of contaminants in the environment. However, information regarding HS quality […]
Environmental injustices on green and blue infrastructure: Urban nexus in a macrometropolitan territory
Injustiças ambientais na infraestrutura verde e azul: nexos urbanos em um território macrometropolitano ABSTRACT Green-blue infrastructure in urban regions guarantees the provision of resources such as water, energy, and food, which are interdependent and fundamental in ensuring human development. In this study, we analyzed the environmental injustice issue relationships of the supply and production of […]
Paleolimnological evidence of environmental changes in seven subtropical reservoirs based on metals, nutrients, and sedimentation rates
Evidências paleolimnológicas de mudanças ambientais em sete reservatórios subtropicais com base em metais, nutrientes e taxas de sedimentação ABSTRACT Paleolimnological research can shed light on a broad range of environmental concerns; however, such studies are scarce in reservoirs. To address this lack of knowledge, a paleolimnological investigation was conducted to determine historical changes in sedimentation […]
Ecotoxicological evaluation of water from the Sorocaba River using an integrated analysis of biochemical and morphological biomarkers in bullfrog tadpoles, Lithobates catesbeianus
Avaliação ecotoxicológica da água do Rio Sorocaba utilizando análise integrada de biomarcadores bioquímicos e morfológicos em girinos de rã-touro, Lithobates catesbeianus ABSTRACT Lithobates catesbeianus tadpoles were exposed for 96 h to water from two sites of the Sorocaba River (summer and winter), Ibiúna (PI) and Itupararanga reservoir (PIR) that contained metals. In the liver, in PI, […]
Homogenization of diatom assemblages is driven by eutrophication in tropical reservoirs
A homogeneização de conjuntos de diatomáceas é impulsionada pela eutrofização em reservatórios tropicais ABSTRACT Eutrophication is one of the most widespread causes of biotic homogenization in freshwater ecosystems. Biotic homogenization can be characterized as reductions in local diversity (alpha) and occupation of available niches by more generalist species. Beta diversity is expected to decrease in […]
Dynamic security regions in power systems with active overexcitation limiters
Regiões de segurança dinâmicas em sistemas de energia com limitadores de sobreexcitação ativos ABSTRACT This paper analyzes the impact of active overexcitation limiters (OELs) on the dynamic security assessment of power systems, with focus on transient stability. The analysis is concentrated on dynamic security regions evaluation, considering different OELs types, including the takeover and summed […]
Freshwater neurotoxins and concerns for human, animal, and ecosystem health: A review of anatoxin-a and saxitoxin
Neurotoxinas de água doce e preocupações com a saúde humana, animal e do ecossistema: uma revisão da anatoxina-a e da saxitoxina ABSTRACT Toxic cyanobacteria are a concern worldwide because they can adversely affect humans, animals, and ecosystems. However, neurotoxins produced by freshwater cyanobacteria are understudied relative to microcystin. Thus, the objective of this critical review […]
Improved empirical models for predicting nitrogen retention in lakes and reservoirs
Modelos empíricos aprimorados para prever a retenção de nitrogênio em lagos e reservatórios ABSTRACT Anthropogenic activities have significantly increased the movement of nitrogen (N) from land to freshwaters and to coastal waters and have led to severe environmental consequences. The flow of N is moderated by retention processes in terrestrial, freshwater and marine ecosystems. Freshwater […]