Ciliate community associated with aquatic macrophyte roots: Effects of nutrient enrichment on the community composition and species richness

Optimization and evaluation of an air-recirculated stripping for ammonia removal from the anaerobic digestate of pig manure

“…Although AD produces renewable energy and mitigates greenhouse gas emissions (Clemens et al, 2006), this technology also yields overloaded anaerobic digestate. The anaerobic digestate is rich in nitrogen, which can lead to water eutrophication (Zeng et al, 2003;Buosi et al, 2011), groundwater pollution (Hao and Chang, 2002), and air pollution. Nitrogen can be removed from anaerobic digestate using nitrification and denitrification (Deng et al, 2006), magnesium ammonium phosphate (Song et al, 2007;Liu et al, 2011), membrane filtration (Mondor et al, 2008), and ammonia stripping (Liao et al, 1995;Guštin and + -N) of anaerobic digestate is low, and traditional biochemical treatments are unsuitable because of the poor biodegradability of this digestate (Liao and Maekawa, 1994;Bortone et al, 1994;Poo et al, 2004).…”

Plant–microbe interaction in aquatic system and their role in the management of water quality: a review

“…( Figure 3) . The distribution of aquatic plants and microbial species largely depend up on the nutrient status of freshwaters (Wu et al 2007;Buosi et al 2011) in the following order: oligotrophic [ mesotrophic [ eutrophic [ hypertrophic. The rhizoplane (the part of root remaining in contact with water or soil) of all macrophytes is the most active zone (Davies et al 2006;Münch et al 2007) because of the presence of various microbial communities.…”

“…Stout (2006) demonstrated the impact of plant-microbe interaction on Lemna minor whereby bacterial association within the roots of the plant negatively influence the uptake of Cd metal ions to avoid the entry of this toxic metal into the plants. Plant-microbe interaction in fresh water bodies depend on several factors such as water chemistry (pH, electrical conductivity, salt concentrations, dissolved oxygen, dissolved organic matter, and toxic organic pollutants) (Schauer et al 2005), redox conditions (Gray et al 2004) and the availability of nutrients (Buosi et al 2011;Ahn et al 2007). Very limited information is available on the significance of plant-microbe interaction in aquatic ecosystem however; some of the typical examples of aquatic plant-microbe interactions and their role in the aquatic system are presented in Table 1.…”

Toxicity of Ammonia Nitrogen to Ciliated Protozoa Stentor coeruleus and Coleps hirtus Isolated from Activated Sludge of Wastewater Treatment Plants

“…Human activities have increased the nitrogen concentrations in water worldwide, leading to considerable eutrophication (Bressan-Buosi et al 2011). Ammonia nitrogen is a very common chemical form in aquatic ecosystems, and its toxic effects have been widely reported (Ankeley et al 1995; Monda et al 1995), including effects on marine ciliates (Xu et al 2004).…”