Increasing nitrate (NO3?) loading in rivers due to agricultural fertilization alters benthic nitrogen (N) cycling and shifts coastal wetlands from being a net source sink of reactive N. Heterotrophic N2 fixation that converts N is often assumed negligible eutrophic ecosystems excluded budget evaluations. We investigated denitrification response increasing NO3? (0, 10, 100 ?M) sediment organic m...

The aim of this study was to compare the selected aquatic plants ability to remove nitrate from wastewater. Excess of these nutrients in water can directly affect human health (methemoglobinaemia) or indirectly through the products of secondary pollution include eutrophication. Negative impact of nutrients excess in surface water often causes the destruction of water ecosystems, and therefore, ...

The aim of this study was to compare the selected aquatic plants ability to remove nitrate from wastewater. Excess of these nutrients in water can directly affect human health (methemoglobinaemia) or indirectly through the products of secondary pollution include eutrophication. Negative impact of nutrients excess in surface water often causes the destruction of water ecosystems, and therefore, ...

Analyses of benthic foraminiferal assemblages were carried out on sediment samples collected in the Gulf Patti (NE Sicily, Tyrrhenian Sea), where high sedimentation rates front Mazzarrà River led to growth a prodelta. The frequency riverine sedimentary fluxes is testified by widespread occurrence erosional and depositional bedforms indicative high-energy processes prodelta slope.The suggests sl...

Abstract Background The sibling species of the malaria mosquito, Anopheles gambiae (sensu stricto) and coluzzii co-exist in many parts West Africa are thought to have recently diverged through a process ecological speciation with gene flow. Divergent larval adaptations, resulting Genotype-by-Environment (G × E) interactions, been proposed as important drivers these species. In Africa, An. tends...

this study investigated the impact of internal nitrogen and phosphorus loading on water qualityof lake chaohu, china. results showed that the overall mean concentration of tn and tp in lake water was1.09±0.84 and 0.15±0.84 (sd) mg/l, respectively, indicating lake chaohu was highly eutrophic during thestudy period. mean benthic flux of nh4 +, no3 -, and po4 3- were 3.56±1.52 mg n/m2/d, -0.14±0.4...

this study investigated the impact of internal nitrogen and phosphorus loading on water qualityof lake chaohu, china. results showed that the overall mean concentration of tn and tp in lake water was1.09±0.84 and 0.15±0.84 (sd) mg/l, respectively, indicating lake chaohu was highly eutrophic during thestudy period. mean benthic flux of nh4 +, no3 -, and po4 3- were 3.56±1.52 mg n/m2/d, -0.14±0.4...