Environmental impact of phosphorus and nitrogen from aquaculture

Herath, Sandamali Sakunthala; Satoh, Shuichi

doi:10.1016/b978-0-08-100506-4.00015-5

Cited by 40 publications

(21 citation statements)

References 57 publications

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“…In addition, GC ponds usually stocked with some filter-feeding species, such as bighead carp (Hypophthalmichthys nobilis), to consume phytoplankton can utilize excess nutrients for maintaining water quality. In most previous studies, the amounts of nutrient loadings in the environment have been theoretically calculated and were different for aquaculture species [28]. Our nutrient determinations provide direct evidence of different nutrient Filled circles represent sediment samples collected from aquaculture ponds.…”

Section: Discussionmentioning

confidence: 68%

Bacterial Communities and Enzymatic Activities in Sediments of Long-Term Fish and Crab Aquaculture Ponds

et al. 2021

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Aquaculture is among the most important and fastest growing agriculture sectors worldwide; however, it generates environmental impacts by introducing nutrient accumulations in ponds, which are possibly different and further result in complex biological processes in the sediments based on diverse farming practices. In this study, we investigated the effects of long-term farming practices of representative aquatic animals dominated by grass carp (GC, Ctenopharyngodon idella) or Chinese mitten crab (CMC, Eriocheir sinensis) on the bacterial community and enzyme activity of sediments from more than 15 years of aquaculture ponds, and the differences associated with sediment properties were explored in the two farming practices. Compared to CMC ponds, GC ponds had lower contents of TC, TN, and TP in sediments, and similar trends for sediment pH and moisture content. Sediment bacterial communities were significantly different between GC and CMC ponds, with higher bacterial richness and diversity in GC ponds. The bacterial communities among the pond sediments were closely associated with sediment pH, TC, and TN. Additionally, the results showed profoundly lower activities of β-1,4-glucosidase, leucine aminopeptidase, and phosphatase in the sediments of GC ponds than CMC ponds. Pearson’s correlation analysis further revealed strong positive correlations between the hydrolytic enzyme activities and nutrient concentrations among the aquaculture ponds, indicating microbial enzyme regulation response to sediment nutrient dynamics. Our study herein reveals that farming practices of fish and crab differently affect bacterial communities and enzymatic activities in pond sediments, suggesting nutrient-driven sediment biological processes in aquaculture ponds for different farming practices.

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Section: Discussionmentioning

confidence: 68%

Bacterial Communities and Enzymatic Activities in Sediments of Long-Term Fish and Crab Aquaculture Ponds

et al. 2021

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“…Aquaculture effluents. Herath and Satoh (2015) presented factors that govern nitrogen (N) and Phosphorous (P) loading to the environment through aquaculture and the remediation measures that could be adopted are discussed.…”

Section: Wastewatermentioning

confidence: 99%

Effects of Pollution on Freshwater Organisms

Choudri

Baawain

2016

Water Environment Research

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This review includes works published in the general scientific literature during 2015 on the effects of anthropogenic pollutants on freshwater organisms. It begins with two broad sections: research reviews and broad field studies and surveys. This is followed by reviews of research categorized in sections to reflect the pollutant class. These sections include wastewater, stormwater and non-point source pollution, nutrients, sediment cap materials and suspended clays, botanical extracts, surfactants, metals, persistent organic pollutants, pharmaceuticals, endocrine disruptors, pesticides, petroleum hydrocarbons and polycyclic aromatic hydrocarbons (PAHs), ionic liquids, and nanomaterials. The final section includes works describing innovations in the field of freshwater pollution research.

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“…The high density of fish applied in an intensive aquaculture system requires more feed loading into the system and consequently more wasteis generated (Little & Bunting, 2016). The waste coming from unconsumed feed and undigested feed materials (faeces) accumulate as organic matter, whereas metabolic waste from the cultured organisms enters the water in dissolved forms (Herath & Satoh, 2015). Some the most common nutrient waste in an aquaculture system are nitrogenous and phosphorus (Rijn, 2013;Fourooghifard et al, 2018;Dauda et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Nitrogenous waste such as ammonia and nitrite are toxic for most aquatic organism even at low concentrations (Zhang et al, 2012;Wang et al, 2017;Li et al, 2020). Although rarely considered as toxic compounds, Phosphorus waste from aquaculture units has been considered to contribute to the eutrophication of natural aquatic environment (Herath & Satoh, 2015;Nikolai & Dzialowski, 2014). The increase of production through aquaculture intensification should apply aquaculture technology that can generate minimum negative impacts to the environment (Aubin et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Production Performance and Nitrogen and Phosphorus Mass Balance in Biofloc-based African Catfish Intensive Culture at Different Densities

Sumitro¹,

Budiardi²,

Fauzi³

et al. 2021

Jurnal Akuakultur Indonesia

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This study aimed to evaluate the production performance and nitrogen and phosphorus mass balance of biofloc-based intensive African catfish Clarias gariepinus culture at different densities. African catfish with an average body weight of 2.64 ± 0.06 g was randomly distributed into 12 units of round tank with a working volume of 2 m3 of water and maintained for 8 weeks. A completely randomized experimental design with four treatments (in triplicates), i.e. a control treatment at a fish density of 500 fish m-3 with regular water exchange and without organic carbon source addition, and biofloc treatments (BFT) at three different densities, i.e. 500 fish m-3 (BFT500), 750 fish m-3 (BFT750), and 1000 fish m-3 (BFT1000). Biofloc systems were performed with a regular addition of tapioca flour (40% C). The production performance between biofloc system and the control was not significantly different, however water and nitrogen utilizations were significantly more efficient in biofloc system than those of the control. The highest fish specific growth rate was observed in BFT1000 and BFT500 (6.01% day-1 and 5.96% day-1, respectively) (P<0.05). Fish density significantly affected the fish growth performance and productivity in biofloc systems, but not nitrogen and phosphorus utilizations. In conclusion, higher fish density significantly increased the production and water utilization efficiency in biofloc systems, but has no effect on nitrogen and phosphorus utilization efficiency. Furthermore, increasing the fish density could significantly reduce the fish survival and require more efforts to control biofloc biomass in the culture system.

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Environmental impact of phosphorus and nitrogen from aquaculture

Cited by 40 publications

References 57 publications

Bacterial Communities and Enzymatic Activities in Sediments of Long-Term Fish and Crab Aquaculture Ponds

Bacterial Communities and Enzymatic Activities in Sediments of Long-Term Fish and Crab Aquaculture Ponds

Effects of Pollution on Freshwater Organisms

Production Performance and Nitrogen and Phosphorus Mass Balance in Biofloc-based African Catfish Intensive Culture at Different Densities

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