Abstract Lagoa do São Bento is a coastal restinga wetland, remnant of paleolake, located in Maricá, RJ. The study aimed to inventory native aquatic plants, make floristic comparison with other lagoons and analyze the regeneration this community after anthropic impacts. In analysis 45 species were listed, 39 which are Angiosperms six Ferns. Aeschynomene paniculata, Hymenachne amplexicaulis, Mont...

Total mercury (THg), methylmercury (MeHg) in water, sediments, macrophytes, fish and human health risks were analyzed assessed from abandoned gold mining ponds (AGMPs)/ areas Western Colombia to know its present environmental condition. Concentrations of THg water (avg. 13.0 ± 13.73 ng L-1) was above the EPA threshold level (12 L-1), suggesting possible chronic effects. Sediment sample revealed...

Mitotic prophase chromosome condensation plays an essential role in nuclear division being therefore regulated by highly conserved mechanisms. However, degrees of chromatin condensation in prophase-prometaphase cells may vary along the chromosomes resulting in specific condensation patterns. We examined different condensation patterns (CPs) of prophase and prometaphase chromosomes and investiga...

The amphibious leafless sedge Eleocharis vivipara develops C 4 -like traits as well as Kranz anatomy under terrestrial conditions, but it develops C 3 -like traits without Kranz anatomy under submerged conditions. When submerged plants are exposed to aerial conditions, they rapidly produce new photosynthetic tissues with C 4 -like traits. In this study, experiments were performed to determine w...

The current agricultural system is seeking a biological solution to lesson hazardous impacts from the use of chemicals control weeds in rice production. Plant allelopathy one ways where allelopathic plant inhibits its surrounding plants by releasing substances. present experiment was conducted at Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during period July Decemb...