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Adaptive Variation Amid High Gene Flow Across a Broad Latitudinal Gradient in the Reef‐Building Honeycomb Worm, Sabellaria alveolataNARA Subscribed
Climate change is already altering, and will continue to reshape, the persistence and spatial structure of marine populations. Understanding metapopulation connectivity and local adaptation is therefore critical for identifying both vulnerable populations and those with adaptive resilience. We applied a seascape genomics approach to investigate connectivity patterns and adaptive responses in the honeycomb worm, Sabellaria alve...
Objective To develop an endoscope reprocessing system using ozonated water jets. Methods The system features a jet head with concentric orifices that moves vertically to disinfect the external surface of the endoscope. Simultaneously, ozonated water is injected into the internal channel to ensure complete disinfection. Endoscopes were experimentally contaminated with Staphylococcus aureus and Escherichia coli . Quantitative an...
Aim We evaluated how native vegetation cover influences the diversity of arachnid assemblages across multiple spatial scales in major Brazilian ecosystems. Location Brazil (Amazon and Atlantic rainforests, Cerrado savanna and Caatinga dry forest). Taxon Arachnida (Opiliones, Pseudoscorpiones and Scorpiones). Methods We sampled arachnids at 120 sites using active search and litter sifting. Native vegetation cover was quantified...
Species distributions along environmental gradients may exhibit nestedness, turnover, or clumping patterns. In environments subject to strong environmental variability, such as continental shelves, environmental filters exert a decisive influence on community composition, which may alternate across seasonal periods, leading to temporal variations in the structure and diversity of marine communities. This study aimed to investi...
Among the few species of Microcambeva reported as occurring in more than one hydrographic basin, M. ribeirae has been previously listed from both the Ribeira de Iguape and the Guaraqueçaba basins. However, morphological and molecular analyses revealed that the specimens from Guaraqueçaba represent a new species, which is described in this study. Therefore, the distribution of M . ribeirae is restricted to the Ribeira de Iguape...
Aim To investigate the lineages diversification of Dolichothele exilis in the Caatinga biome and to infer geological and climatic drivers of diversification in this region. Location Caatinga, Northeast of Brazil. Taxon Dolichothele exilis (Araneae: Theraphosidae). Methods We used 96 individuals for genomic sequencing (GBS sequencing) and 39 individuals for COI mitochondrial marker sequencing. Population structure was inferred...
Mycelial biomass of Amazonian oyster mushroom (Pleurotus ostreatus) as a biotechnological platform for digestive enzyme modulationNARA Subscribed
Pleurotus ostreatus is an edible mushroom widely recognized for its nutritional value and high content of bioactive compounds, including phenolics and polysaccharides, which confer potential antidiabetic and anti-obesity effects. These properties are mainly associated with its ability to modulate digestive enzymes involved in carbohydrate and lipid metabolism, as well as its antioxidant activity. This study applied a bioproces...
Grazing intensity and seasonality regulate N cycling via litter and excreta in tropical grass–legume pasturesNARA Subscribed
Integrating forage legumes into grasslands reduces the need for N fertilization, but its effectiveness depends on grazing management. This 2 years study evaluated N cycling in Urochloa brizantha and Arachis pintoi pasture under severe (10 cm stubble height), moderate (15 cm stubble height), and light (20 cm stubble height) grazing intensities. Nitrogen cycling from litter and livestock excreta were assessed. Moderate grazing d...
Estimating the impacts of recurrent and expanding coastal flooding on septic systems in Maryland’s Chesapeake BayNARA Subscribed
Projected sea-level rise (SLR) is expected to substantially expand coastal flood extents across Maryland’s Chesapeake Bay, with implications for decentralized wastewater infrastructure. This study integrates modeled coastal flooding scenarios from 2020 to 2060 with septic systems locations to quantify exposure under daily and annual flood conditions and identify areas where exposure intersects with high social vulnerability. F...
Progress status of the NUSES Space MissionNARA Subscribed