Wilson Machado results 83
· Newest (Page 1/4, per page 25)
Author: Wilson Machado ×Clear All Filters
Search Results
Environmental pollution research has expanded rapidly over recent decades, resulting in a fragmented body of scientific knowledge. This study provides a bibliometric synthesis of global pollution research between 1985 and 2024, based on 1,447 Scopus-indexed publications, treating review and bibliometric articles as analytical units to examine the structure, thematic organization, and geographic distribution of the field. Publi...
Ecotoxicological Assessment of Metal Pollution using Aquatic Organisms in Surface Sediments from a Tropical Urbanized Lagoon SystemNARA Subscribed
This study documents an ecotoxicological evaluation of bottom sediments ( n = 21) from a tropical lagoon complex performed in the Itaipu-Piratininga system (Rio de Janeiro State), an impacted urban tropical estuary. To achieve this purpose, three lines of evidence were adopted: sediment characterization, metal contamination and toxicity to tropical species (bioassays with mussels Perna perna , tanaids Kalliapseudes schubartii...
Increasing inputs of nutrients and organic matter from urban areas accumulate in coastal sediments, which act as a storage compartment that can trigger eutrophication events, and promote organism mortality. The aim of this research was to evaluate the factors that determine the distribution of nutrients in sediments and porewater from a coastal environment. Jurujuba cove receives nutrients and organic matter inputs from diffus...
This study investigated the characterization and application of organoclay formulations in a chemoautotrophic biofloc system. Organoclays were produced using the calcination method and bentonite, chitosan, corn, and tapioca starches as ingredients. Thermogravimetric analysis confirmed the high thermal stability of bentonite, whereas biopolymers (tapioca, chitosan, and corn starch) exhibited greater thermal sensitivity and a lo...
Oxygen Minimum Zones (OMZs) are pivotal ocean regions defined by low dissolved oxygen concentrations [DO]. However, biogeochemical variations within OMZs—both laterally and with depth—may select for fundamentally different microbial metabolisms important for ocean biogeochemistry. We used metagenome sequencing to investigate potential differences by specifically targeting biogeochemically‐important features—including the prima...
An experimental test on the effects of dispersal from different habitat sources on community structureNARA Subscribed
Biological interactions, disturbances, and demographic stochasticity often drive population declines and local extinctions. Dispersal can counterbalance these drivers by rescuing small populations or facilitating recolonization. Using freshwater zooplankton in experimental mesocosms, we tested three hypotheses: (1) isolated sites would experience declines in species richness, with ecological drift causing communities to lose d...
Description and Patterns of Hyperostosis in Plata Pompano, Trachinotus marginatus Cuvier, 1832NARA Subscribed
This study describes the occurrence of hyperostosis, to the best of our knowledge, for the first time in Trachinotus marginatus Cuvier 1832 and examines its patterns in 21 specimens from Rio de Janeiro, Brazil. Radiographic images revealed the presence of the condition in 76.2% of the individuals, affecting five distinct bone regions: supraoccipital (76.2%), dorsal‐fin pterygiophore (52.3%), anal‐fin pterygiophore (9.5%), rib...