Article
Agriculture, Multidisciplinary
Ping Yang, Kam W. Tang, Hong Yang, Chuan Tong, Nan Yang, Derrick Y. F. Lai, Yan Hong, Manjing Ruan, Yingying Tan, Guanghui Zhao, Ling Li, Chen Tang
Summary: This study assessed the carbon footprint of aquaculture ponds in southeastern China and found that planktonic primary production and commercial feeds were the main carbon inputs, while planktonic respiration and sedimentation were the major carbon outputs. Water-to-air emissions of carbon greenhouse gases were low, but varied among the ponds. Methane emissions from the ponds were higher than some other agro-ecosystems. The findings suggest that improving production efficiency and reducing carbon-rich detritus accumulation can help minimize the climatic warming impacts of aquaculture production.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Article
Fisheries
Ana Paula Mariane de Morais, Ivanilson Lima Santos, Ramon Felipe Siqueira Carneiro, Eric Arthur Bastos Routledge, Leila Hayashi, Marco Antonio de Lorenzo, Felipe do Nascimento Vieira
Summary: This study integrated shrimp, fish, and seaweed in a biofloc production system and found that at a seaweed density of 2 g L-1, the system showed higher nitrogen and phosphorus recovery rates and increased total productivity. Therefore, it is recommended to use a seaweed density of 2 g L-1 in a multitrophic system.
Article
Fisheries
Qiang Sheng, Qiongying Tang, Zhenglong Xia, Miaoying Cai, Salifu Ibrahim, Guoliang Yang
Summary: This study investigated the effects of pond water depth and aeration mode on phytoplankton communities in Macrobrachium rosenbergii farming ponds in China. The results showed that maintaining deeper water depth and higher N/P ratio can promote phytoplankton diversity and suppress algal blooms, suggesting that optimizing the aquaculture mode can help resolve planktonic algae problems in Asian aquaculture ponds.
AQUACULTURE RESEARCH
(2023)
Article
Engineering, Marine
Qian Liu, Junnan Li, Hongwei Shan, Yicheng Xie
Summary: The microbial structure and metabolic potential, especially related to nitrogen cycling, in integrated multitrophic aquaculture (IMTA) ponds with shrimp were investigated. The study found that the composition of microbial communities was similar in two different shrimp IMTA ponds, but the water and sediments shared few common members. The relative abundances of nitrogen cycling genes were higher in sediment than in water, except for assimilatory nitrate reduction genes. The main factors influencing the differences in nitrogen cycling genes between the two ponds were salinity and pH in water, as well as the NO2- and NH4+ contents in sediment pore water.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Fisheries
Sarah Nahon, Goncalo Villa de Brito, Hugo Quental-Ferreira, Joel Aubin, Christophe Jaeger, Christophe Menniti, Philippe Kerherve, Laurence Larroquet, Maria Emilia Cunha
Summary: Responsible aquaculture practices are necessary to sustainably feed the growing global population. Integrated multi-trophic aquaculture (IMTA) systems, which combine extractive species like oysters and fed species like fish, offer a promising solution to recycle waste streams and minimize environmental impacts.
Article
Geochemistry & Geophysics
Lidya G. Tarhan, Mingyu Zhao, Noah J. Planavsky
Summary: Bioturbators have complex impacts on the global phosphorus cycle, potentially enhancing phosphorus burial but also stimulating productivity, rather than unidirectionally mediating phosphorus. During the early Paleozoic, bioirrigation appears to have been more prominent, suggesting that the emergence of bioturbators is unlikely to have driven deoxygenation events.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Environmental Sciences
Caroline Ganglo, Clara Mendoza-Lera, Alessandro Manfrin, Rossano Bolpagni, Verena Gerstle, Sara Kolbenschlag, Eric Bollinger, Ralf Schulz, Andreas Lorke
Summary: Shallow lentic aquatic ecosystems, such as ponds, play a crucial role in carbon cycling and greenhouse gas emission. Tube-dwelling benthic invertebrates, like chironomids, may have a significant impact on the carbon budget of these ecosystems, but their role is still poorly understood.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yiran Hou, Bing Li, Gongcheng Feng, Chengfeng Zhang, Jie He, Haidong Li, Jian Zhu
Summary: The study found that the bioturbation of Macrobrachium nipponense significantly promoted the degradation of organic matter in sediments during a 90-day incubation experiment, providing better conditions for OM degradation and altering bacterial composition to enhance the degradation process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Ecology
Romain Lavaud, David S. Ullman, Celeste Venolia, Carol Thornber, Lindsay Green- Gavrielidis, Austin Humphries
Summary: Integrated aquaculture systems combining macroalgae with traditional fish and shellfish production have ecological and economic benefits. A model was developed to evaluate the potential of growing sugar kelp at existing oyster farms in Narragansett Bay. Kelp growth in the winter months provides ecosystem services and additional revenue for farmers, while locations with nutrient-rich waters are suitable for kelp and oyster cultivation.
ECOLOGICAL MODELLING
(2023)
Article
Fisheries
Chuan Tong, David Bastviken, Kam W. Tang, Ping Yang, Hong Yang, Yifei Zhang, Qianqian Guo, Derrick Y. F. Lai
Summary: Small-scale aquaculture operations are increasingly common worldwide, with this study specifically examining the greenhouse gas dynamics in shrimp ponds in southeastern China. The ponds were found to act as a CO2 sink and a CH4 source, with ebullition being the main emission pathway for CH4 during the farming period. This comprehensive year-long study enhances our understanding of carbon cycling in coastal aquaculture ponds and provides a scientific basis for updating greenhouse gas inventories.
Article
Environmental Sciences
Yanqing Han, Qisheng Li, Hu He, Jiao Gu, Zhaoshi Wu, Xiaolong Huang, Xiaojuan Zou, You Zhang, Kuanyi Li
Summary: The study found that Lanthanum-modified bentonite (LMB) effectively reduced phosphorus concentration in eutrophic lakes, but the disturbance caused by omni-benthivorous fish had a negative impact on the efficacy of LMB, limiting its ability to control algal growth and phosphorus release from sediment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Benjamin D. Janke, Jacques C. Finlay, Vinicius J. Taguchi, John S. Gulliver
Summary: Managed stormwater ponds play a vital role in mitigating urban runoff and nutrient pollution, but their functions are often overlooked. This study shows that water quality improvements in these ponds are mainly achieved through the settling of nutrients and contaminants. The study also highlights the importance of understanding and improving pond hydrologic function for enhancing nutrient retention and meeting water quality goals.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Civil
Lele Tang, Linhai Zhang, Ping Yang, Chuan Tong, Hong Yang, Lishan Tan, Yongxin Lin, Derrick Y. F. Lai, Kam W. Tang
Summary: This study measured CO2 concentrations in aquaculture ponds in the Shanyutan Wetland, China, and calculated CO2 fluxes between sediment-water and water-air interfaces. It was found that photosynthetic activity drove the temporal variations in water column CO2 concentration and water-air CO2 flux, while sediment temperature influenced the changes in porewater CO2 concentration and sediment-water CO2 flux. The pond water body showed a high capacity to consume excess CO2.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Environmental
Shuo-Nan Ma, Yuan-Feng Xu, Hai-Jun Wang, Hong-Zhu Wang, Yan Li, Xu-Meng Dong, Ji-Lin Xu, Qing Yu, Martin Sondergaard, Erik Jeppesen
Summary: This study conducted a five-year large-scale experiment in ten ponds to investigate the effects of nitrogen input on phosphorus dynamics. The results showed that sediment phosphorus release significantly increased when the nitrogen concentration exceeded a certain threshold. The release was most pronounced in summer and in sediments rich in organic matter. Several mechanisms were proposed to explain the stimulated phosphorus release, including N:P imbalance, alkaline phosphatase production, and disturbed sediment resuspension.
Article
Environmental Sciences
B. R. Almazan, M. Esteller, S. E. Garrido-Hoyos, J. L. Exposito-Castillo, C. Diaz-Delgado, J. C. Garcia-Colin
Summary: This study assessed the water and nitrogen-phosphorus quality in the Yaqui River Irrigation District in Mexico. The results showed that the drainage system effectively prevented excessive nitrogen from entering the aquifer, while the bay area experienced high levels of phosphorus pollution. It is necessary for the district administrators to focus on phosphate fertilizer management and implement irrigation techniques to improve water use efficiency.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Chemistry, Applied
Tavani Rocha Camargo, Patricia Ramos, Jose M. Monserrat, Carlos Prentice, Celio J. C. Fernandes, Willian F. Zambuzzi, Wagner C. Valenti
Summary: The study found that protein hydrolysates from fish bycatch have antioxidant activity, no impact on cell viability at low doses, and can modulate extracellular and intracellular pathways.
Article
Marine & Freshwater Biology
Adriana N. A. F. Ibrahim, Ilan Karplus, Wagner C. Valenti
Summary: The large size variation of Macrobrachium amazonicum reflects a complex population structure with four morphotypes. The study shows that the large claw of the GC2 morphotype plays a major role in influencing the development and behavior of the smaller TC males through aggressive social interactions.
Article
Biodiversity Conservation
Stefany A. Pereira, Janaina M. Kimpara, Wagner C. Valenti
Summary: Seaweed cultivation, particularly focusing on Hypnea pseudomusciformis, has been shown to be a sustainable production system that takes into account environmental, social, and economic dimensions. The study found that the cultivation of H. pseudomusciformis had highly efficient use of resources, contributed to local community income, and was highly profitable with positive externalities. The results suggest that seaweed farming could be a sustainable way to produce high-quality human food and raw materials for industry along the tropical Atlantic Southwestern coast.
ECOLOGICAL INDICATORS
(2021)
Article
Fisheries
Wagner C. Valenti, Helenice P. Barros, Patricia Moraes-Valenti, Guilherme W. Bueno, Ronaldo O. Cavalli
Summary: Aquaculture in Brazil has a long history, with freshwater fish and marine shrimp being the main products produced. The industry is dominated by small farms and faces the challenge of developing sustainable production systems and leveraging new technologies and innovations to support its growth.
AQUACULTURE REPORTS
(2021)
Article
Biotechnology & Applied Microbiology
Tavani Rocha Camargo, Simon Khelissa, Nour Eddine Chihib, Emilie Dumas, Jian Wang, Wagner C. Valenti, Adem Gharsallaoui
Summary: The study demonstrates that complexation with pea protein and subsequent microencapsulation effectively enhance the antioxidant activity of protein hydrolysates while preserving their biological activity. Protein hydrolysates obtained from bycatch could serve as potential sources of functional ingredients or nutraceuticals.
MARINE BIOTECHNOLOGY
(2021)
Article
Fisheries
Elisa Maia de Godoy, Fernanda S. David, Naor S. Fialho, Danilo C. Proenca, Tavani R. Camargo, Guilherme Wolff Bueno
Summary: This study evaluated the environmental sustainability of family fish farms producing Nile tilapia in earthen pond semi-intensive systems in the Vale do Ribeira region of São Paulo state, Brazil. It found that environmental sustainability was influenced by increased pollutant generation in fish farms, but can be improved through alternative technologies that use water more efficiently. The results also showed that environmental sustainability indicators and index are effective tools in planning sustainable aquaculture activities.
Article
Fisheries
Fernanda S. David, Danilo C. Proenca, Dallas L. Flickinger, Guilherme Wolff Bueno, Wagner C. Valenti
Summary: This study focused on the carbon budget of integrated multitrophic aquaculture systems in earthen ponds, with the findings indicating that the farmed species have relatively low conversion rates of carbon and that the addition of substrates has minimal impact on carbon assimilation.
AQUACULTURE RESEARCH
(2021)
Article
Fisheries
Daniela P. Dantas, Dallas L. Flickinger, Gelcirene A. Costa, Patricia Moraes-Valenti, Wagner C. Valenti
Summary: This study evaluated the economic feasibility of Amazon River prawn and tambaqui grow-outs in a subtropical region of Brazil and considered the transfer of the fish to agricultural greenhouses for the winter season. Simulations showed that all systems were economically feasible, with larger properties having shorter payback periods and greater profitability.
AQUACULTURE INTERNATIONAL
(2022)
Article
Biodiversity Conservation
Naor S. Fialho, Wagner C. Valenti, Fernanda S. David, Elisa M. Godoy, Danilo C. Proenca, Rodrigo Roubach, Guilherme Wolff Bueno
Summary: This study evaluated the environmental sustainability of Nile tilapia net-cage farms of different sizes using environmental sustainability indicators and benchmarks. Results showed that environmental sustainability is independent of farm size, with factors like feed composition, management techniques, and water temperature being more critical. The use of benchmarking tools can provide reference values for each environmental sustainability indicator, allowing improvements to reach desirable states.
ECOLOGICAL INDICATORS
(2021)
Article
Biotechnology & Applied Microbiology
Tavani R. Camargo, Paulo Mantoan, Patricia Ramos, Jose M. Monserrat, Carlos Prentice, Celio C. Fernandes, Willian F. Zambuzzi, Wagner C. Valenti
Summary: This study evaluated the bioactivity of protein hydrolysates prepared from two common crabs caught in the shrimp fisheries in Brazil. The hydrolysates showed antioxidant activity and no cytotoxic effects on cells, suggesting their potential use as nutraceutical ingredients in the food industry.
MARINE BIOTECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Tamara Fonseca, Wagner C. Valenti, Biagio F. Giannetti, Fernando H. Goncalves, Feni Agostinho
Summary: This study assesses the sustainability of lambari aquaculture in Brazil using the emergy synthesis method and proposes improvements. The results suggest that the current farming systems have low efficiency, but sustainability can be improved by increasing productivity, improving water source utilization, and modifying feed composition.
Article
Environmental Sciences
Gustavo Gonzaga Henry-Silva, Julio Cesar da Silva Cacho, Rodrigo Savio Teixeira Moura, Dallas Lee Flickinger, Wagner C. Valenti
Summary: A net-cage Nile tilapia production system implemented in a reservoir in the hot semi-arid region of Brazil is strongly affected by long drought events. However, it still provides food, generates wealth, and promotes social development for the local population with low environmental impact.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Fisheries
F. Gilson, M. B. New, L. A. Rodrigues, W. C. Valenti
Summary: This study describes the downstream supply and value chains in commercial tambatinga farming in Midnorth Brazil, focusing on the impacts of farm size on intermediaries, job creation, income generation, and wealth beneficiaries. The results show that different farm sizes have varying effects on these factors. Small farms selling directly to consumers generate significant wages and allow for wealth distribution, while larger farms relying on intermediaries result in fewer wealth beneficiaries. This model of small fish farms has the potential to alleviate poverty and reduce inequalities.
AQUACULTURE INTERNATIONAL
(2023)
