The present study evaluated the embryonic–larval development of sea urchins (Echinometra lucunter) exposed to water-soluble fractions (WSF) of oil spilled on the Brazilian coast in 2019 and recovered post-accident in 2021. In 2019, organisms were exposed to WSF concentrations of 35.01
This study evaluated how different levels of sediment metal contamination (ranging from below to above toxicity thresholds) and exposure durations (3–14 days) influence metal bioaccumulation and biomarker responses in fish under estuarine conditions. Using an integrated biomarker approach, the relationships among environmental contamination, metal accumulation, and fish health were examined to improve biomonitoring strategies. At the highest contamination level, 100
Caiçara communities articulate ecological knowledge, productive practices, and cultural relationships with coastal environments, constituting systems of sociobiodiversity. This study analyzed how the practices narrated by women from Vila Barra do Una, Peruíbe, São Paulo, Brazil, articulate knowledge about biodiversity, cultural reproduction, and territorial permanence, based on the book “Mulheres do Una”. A qualitative, documentary, and thematic analysis of the book was conducted, considering practices, biodiversity resources, associated knowledge, and territorial relationships. The results highlighted women’s roles in fishing, cooking, plant use, agriculture, handicrafts, tourism, and knowledge transmission. These practices connect biodiversity, memory, identity, and territory, highlighting women as mediators of sociobiodiversity.
The incineration of municipal solid waste (MSW) with energy recovery is presented as an alternative for final disposal, but it generates recurring controversies due to its environmental and health impacts. This article analyzes the debates surrounding the topic based on the Technical Opinion on the Valoriza Santos Waste-to-Energy Facility (URE) and recent scientific evidence. This is a documentary and bibliographic analysis conducted using a qualitative and critical-interpretive approach. The results indicate concerns regarding atmospheric emissions, the release of dioxins and furans, the generation of hazardous ash, and potential adverse impacts on recycling. The discussion contrasts these issues with the scientific literature, highlighting convergences, divergences, and knowledge gaps. It is concluded that the sustainability of the process requires rigorous operational control, lacks alignment with the circular economy, and does not appear to be the most appropriate option within the ESG agenda
The accumulation of atmospheric settleable particulate matter (SPM) poses a risk to the aquatic environment, as it presents a complex concentration of metallic elements. The marine bivalve Crassostrea rhizophorae has a high bioaccumulation capacity. This study quantified and evaluated metal exposure across the following SPM concentrations (control; 0.01; 0.1, and 1 g L⁻¹) and durations (48h and 96h), observing their influence on plasma Ca²⁺ concentrations and shell hardness in C. rhizophorae. Quantification revealed 17 metallic elements in the shell, demonstrating a correlation between plasma Ca²⁺ and shell resistance. SPM influenced the physiological regulation of calcium, altering the shell's structural process.
