Article
Environmental Sciences
Marlene Lorgen-Ritchie, Michael Clarkson, Lynn Chalmers, John F. Taylor, Herve Migaud, Samuel A. M. Martin
Summary: This study analyzed temporal changes in the microbiome associated with the intestine in Atlantic salmon during smolt production, finding a sharp decline in microbial diversity 1-week post-seawater transfer (SWT) followed by re-establishment with a different community structure after 4 weeks. Core microbial taxa were classified into three categories: omnipresent, salinity specific, and transient. Additionally, an increase in microbial richness in the water was observed, possibly due to a temporal increase in organic load, while dominance of Vibrionaceae was attributed to higher temperatures during RAS production.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Fisheries
Ruixiang Zhao, Jane E. Symonds, Seumas P. Walker, Konstanze Steiner, Chris G. Carter, John P. Bowman, Barbara F. Nowak
Summary: The feed ration is crucial for fish growth performance and gut health, while temperature significantly affects water microbiota. The faecal microbiota is stable, distinct from water or feed microbiota, and dominated by Photobacterium piscicola in samples with higher water content.
Article
Green & Sustainable Science & Technology
Gaspard Philis, Friederike Ziegler, Mona Dverdal Jansen, Lars Christian Gansel, Sara Hornborg, Grete Hansen Aas, Anne Stene
Summary: The study focuses on the environmental impacts of sea lice issues in Norwegian salmon farming, examining different treatment methods, the footprint of cleaner fish value chains, and the contribution of biological lice treatments to the salmon footprint. The research found that wrasse fishing has lower impacts compared to farmed lumpfish and wrasse, but ecosystem impacts and cleaner fish delousing efficiencies need further investigation for a comprehensive comparison. Overall, biological lice treatments are found to have a low contribution to the environmental footprint of salmon production, suggesting that it could be a viable option for sustainable salmon treatment, contingent on confirming treatment efficiency, accounting for ecosystem impacts, and addressing cleaner fish welfare issues.
JOURNAL OF INDUSTRIAL ECOLOGY
(2022)
Article
Environmental Sciences
Ana S. Gomes, Fabian Zimmermann, Ernst M. Hevroy, Marcus A. L. Soyland, Tom J. Hansen, Tom Ole Nilsen, Ivar Ronnestad
Summary: Precision feeding aims to provide optimal growth and performance for farmed animals while minimizing feed waste. This study examined the relationship between meals, feed deprivation time, and the feed consumed by Atlantic salmon post smolts. The results showed that the time between meals and the size of the previous meal significantly affected the feed intake in the following meal, suggesting the possibility of optimizing meal size.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Friederike Ziegler, Ray Hilborn
Summary: This study compares the environmental impacts of wild salmon and farmed salmon in terms of greenhouse gas emissions, land use, and contaminant content, and finds that wild salmon has lower impacts in these aspects. The study provides recommendations for improvement options and supply chain optimization to facilitate the development of more sustainable salmon products.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Fisheries
Curtis Crouse, John Davidson, Christopher Good
Summary: Despite limited understanding of economic feasibility, there is increasing investment and use of land-based recirculating aquaculture systems (RAS) for producing market-size Atlantic salmon. High incidence of early maturing fish is a profitable obstacle for this production method, therefore well-defined RAS-specific water temperature thresholds are needed to minimize early maturation.
Article
Fisheries
Vasco C. Mota, Maia L. Eggen, Carlo C. Lazado
Summary: This study evaluated the effects of acute PAA exposure on Atlantic salmon parr, finding that the no-observed-effect concentration for PAA should be below 1.6 mg/L. The toxicity of PAA-based disinfectants is influenced by their acidified nature, which may interfere with the water pH in low alkalinity aquaculture systems. Further research is needed to assess the long-term health and welfare consequences of PAA exposure in Atlantic salmon parr.
Article
Environmental Sciences
M. V. Kingsbury, D. Hamoutene, P. Kraska, A. Lacoursiere-Roussel, F. Page, T. Coyle, T. Sutherland, O. Gibb, C. W. McKindsey, F. Hartog, S. Neil, K. Chernoff, D. Wong, B. A. Law, L. Brager, S. M. Baillie, M. Black, T. Bungay, D. Gaspard, K. Hua, G. J. Parsons
Summary: Using data from an aquaculture monitoring program, this study investigates the presence of anti-sea lice drugs and their relationship with organic enrichment in sediment near salmon farms in Canada. The study finds that concentrations of the drugs are often below detection limits and lower compared to other countries. The highest concentrations are observed close to the cages, with lower concentrations detected up to 1.5 km away. Most samples contain multiple drugs, highlighting the potential for cumulative effects. The detection of drugs several years after treatment emphasizes the need for research on their overall persistence.
MARINE POLLUTION BULLETIN
(2023)
Article
Energy & Fuels
Ion V. Ion, Florin Popescu, Gelu Coman, Michael Fratita
Summary: Due to the benefits of RAS, many fish farmers are choosing this system. This paper analyzes three different heating systems for indoor RAS and finds that the ground source heat pump has the lowest running cost for water heating.
Article
Marine & Freshwater Biology
Carlo C. Lazado, Kevin T. Stiller, Britt-Kristin Megard Reiten, Joao Osorio, Jelena Kolarevic, Lill-Heidi Johansen
Summary: The study found that continuous ozonation in a brackish water recirculating aquaculture system had minimal physiological perturbations on Atlantic salmon post-smolts, with no significant difference in survival rates and average weight compared to the control group. Histological evaluations showed better gill health status in the ozone-treated group, while mucosal transcriptomics revealed distinct response profiles between gills and skin.
AQUATIC TOXICOLOGY
(2021)
Article
Fisheries
Meredith Burke, Jon Grant, Ramon Filgueira, Tim Stone
Summary: Open ocean fish farming involves monitoring environmental conditions, especially water quality, to improve aquaculture management. Tide was found to significantly impact dissolved oxygen levels in a commercial Atlantic salmon farm, with different levels at different locations within the farm.
Article
Biotechnology & Applied Microbiology
Carolina P. Moraleda, Diego Robledo, Alejandro P. Gutierrez, Jorge del-Pozo, Jose M. Yanez, Ross D. Houston
Summary: The resistance to SRS is a polygenic trait, and this study has identified relevant genes and pathways that are likely to play a role in mediating genetic resistance through genome-wide association analysis and RNA-sequencing.
Article
Engineering, Marine
Bibbi Maria Kallay Hjelle, Albert Kjartan Dagbjartarson Imsland, Pablo Vigo Balseiro, Sigurd Olav Handeland
Summary: The AcuLice system, which uses a composite acoustic sound image, has been shown to effectively reduce the number of salmon lice on Atlantic salmon without causing additional stress to the fish.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Fisheries
Morten Omholt Alver, Martin Fore, Jo Arve Alfredsen
Summary: The research team developed a mathematical model based on the advection-diffusion equation to predict dissolved oxygen levels in fish sea cages. The model was tested in a large production unit and performed well, but may require more detailed information on fish behavior and current conditions within the cages to improve accuracy.
Article
Environmental Sciences
Jaewoon Jeong, Marit Stormoen, Krishna K. Thakur, Crawford W. Revie
Summary: Accurate monitoring of sea lice levels on salmon farms is crucial for efficient management of louse infestation. Increasing sample sizes, using appropriate treatment thresholds, and adjusting sampling intervals can improve the accuracy of abundance estimates and thus increase the frequency of effective treatments.
FRONTIERS IN MARINE SCIENCE
(2021)
Review
Energy & Fuels
Jiangyu Dai, Shiqiang Wu, Guoyi Han, Josh Weinberg, Xinghua Xie, Xiufeng Wu, Xingqiang Song, Benyou Jia, Wanyun Xue, Qianqian Yang
Article
Agronomy
Miguel Brandao, Miko U. F. Kirschbaum, Annette L. Cowie, Susanne Vedel Hjuler
GLOBAL CHANGE BIOLOGY BIOENERGY
(2019)
Article
Green & Sustainable Science & Technology
Astrid Nilsson, Kiyan Shabestary, Miguel Brandao, Elton P. Hudson
JOURNAL OF INDUSTRIAL ECOLOGY
(2020)
Review
Environmental Sciences
Davy Vanham, Adrian Leip, Alessandro Galli, Thomas Kastner, Martin Bruckner, Aimable Uwizeye, Kimo van Dijk, Ertug Ercin, Carole Dalin, Miguel Brandao, Simone Bastianoni, Kai Fang, Allison Leach, Ashok Chapagain, Marijn Van Der Velde, Serenella Sala, Rana Pant, Lucia Mancini, Fabio Monforti-Ferrario, Gema Carmona-Garcia, Alexandra Marques, Franz Weiss, Arjen Y. Hoekstra
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Review
Green & Sustainable Science & Technology
Xingqiang Song, Christel Carlsson, Ramona Kiilsgaard, David Bendz, Helene Kennedy
Review
Agronomy
Annette L. Cowie, Goran Berndes, Niclas Scott Bentsen, Miguel Brandao, Francesco Cherubini, Gustaf Egnell, Brendan George, Leif Gustavsson, Marc Hanewinkel, Zoe M. Harris, Filip Johnsson, Martin Junginger, Keith L. Kline, Kati Koponen, Jaap Koppejan, Florian Kraxner, Patrick Lamers, Stefan Majer, Eric Marland, Gert-Jan Nabuurs, Luc Pelkmans, Roger Sathre, Marcus Schaub, Charles Tattersall Smith, Sampo Soimakallio, Floor Van der Hilst, Jeremy Woods, Fabiano A. Ximenes
Summary: The scientific literature contains conflicting findings on the climate effects of forest bioenergy, influenced by the wide diversity of bioenergy systems and assessment methods. Assessing these effects requires a systems approach considering the entire lifecycle and system-level interactions, while also highlighting the need for greater transparency and consistency in greenhouse gas reporting and bioenergy-related accounting.
GLOBAL CHANGE BIOLOGY BIOENERGY
(2021)
Article
Green & Sustainable Science & Technology
Thomas Schaubroeck, Simon Schaubroeck, Reinout Heijungs, Alessandra Zamagni, Miguel Brandao, Enrico Benetto
Summary: Life cycle assessment (LCA) is a common method to assess the potential environmental impact of human/industrial systems, with attributional (ALCA) and consequential (CLCA) being two prominent types. This article aims to argue for and select definitions for each concept, specify their characteristics, and go beyond current findings. ALCA attributes environmental impact to a product life cycle, while CLCA assesses the consequences of decisions, with different modelling restrictions and evaluation approaches for each type.
Article
Energy & Fuels
Gerrit Ralf Surup, Hamideh Kaffash, Yan Ma, Anna Trubetskaya, Johan Berg Pettersen, Merete Tangstad
Summary: This study investigates the methods to improve the properties of charcoal through coal beneficiation and evaluates the CO2 emissions of the upgraded charcoal. The combination of ash removal, briquetting, and high-temperature treatment can provide renewable coke with superior properties but may decrease the available biomass potential and increase CO2 emissions. On-site upgrading of industrial charcoal at metallurgical plants by combining pyrolysis and post-treatment processes can minimize energy or material losses.
Article
Green & Sustainable Science & Technology
Sara Gonzalez-Garcia, Fernando Almeida, Miguel Brandao
Summary: This study aims to assess the impact of global warming on winter wheat cultivation under different rotation systems in the region of Galicia, Spain. The results show that the global warming impact differs between the attributional life cycle assessment and the consequential life cycle assessment. However, regardless of the approach, the cultivation of native winter wheat under ecological management is always the preferred choice.
Article
Green & Sustainable Science & Technology
Yan Ma, Johan Berg Pettersen
Summary: This paper assesses the environmental impacts of extracting pig iron from bauxite residue, finding that while it reduces mineral scarcity and waste volume, it also increases energy use and overall life cycle impacts. However, decarbonizing the electricity supply improves the environmental performance of pig iron from bauxite residue, including impacts on ecosystems, human health, and climate change.
JOURNAL OF INDUSTRIAL ECOLOGY
(2023)
Article
Engineering, Environmental
Maria Carolina Mora-Sojo, Kamila Krych, Johan Berg Pettersen
Summary: This article examines the environmental impacts of the textile industry and explores how closing material loops can reduce the impacts of clothing consumption. The study found that increasing circularity and changing shopping and disposal behaviors can significantly reduce climate change impacts, water scarcity, and energy demand.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Green & Sustainable Science & Technology
Yan Ma, Athina Preveniou, Anastasios Kladis, Johan Berg Pettersen
Summary: This study compares the commonly used Bayer process and alternative Pedersen process in alumina production, finding that the Pedersen process performs better in mineral resource scarcity but requires more energy and generates more bauxite residue.
JOURNAL OF CLEANER PRODUCTION
(2022)