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1
Spencer, B. E. "Environmental impacts of aquaculture". Aquaculture 203, n. 3-4 (gennaio 2002): 397–98. http://dx.doi.org/10.1016/s0044-8486(01)00633-0.
2
Martinez-Porchas, Marcel, e Luis R. Martinez-Cordova. "World Aquaculture: Environmental Impacts and Troubleshooting Alternatives". Scientific World Journal 2012 (2012): 1–9. http://dx.doi.org/10.1100/2012/389623.
Abstract (sommario):
Aquaculture has been considered as an option to cope with the world food demand. However, criticisms have arisen around aquaculture, most of them related to the destruction of ecosystems such as mangrove forest to construct aquaculture farms, as well as the environmental impacts of the effluents on the receiving ecosystems. The inherent benefits of aquaculture such as massive food production and economical profits have led the scientific community to seek for diverse strategies to minimize the negative impacts, rather than just prohibiting the activity. Aquaculture is a possible panacea, but at present is also responsible for diverse problems related with the environmental health; however the new strategies proposed during the last decade have proven that it is possible to achieve a sustainable aquaculture, but such strategies should be supported and proclaimed by the different federal environmental agencies from all countries. Additionally there is an urgent need to improve legislation and regulation for aquaculture. Only under such scenario, aquaculture will be a sustainable practice.
3
Sherry, Jesse, e Jennifer Koester. "Life Cycle Assessment of Aquaculture Stewardship Council Certified Atlantic Salmon (Salmo salar)". Sustainability 12, n. 15 (29 luglio 2020): 6079. http://dx.doi.org/10.3390/su12156079.
Abstract (sommario):
Salmon aquaculture has grown rapidly and is expected to continue to grow to meet consumer demand. Due to concerns about the environmental impacts associated with salmon aquaculture, eco-labeling groups have developed standards intended to hold salmon producers accountable and provide a more sustainable option to consumers. This study utilized life cycle assessment (LCA) to quantify the environmental impacts of salmon raised to Aquaculture Stewardship Council (ASC) certification standards in order to determine if ASC certification achieves the intended reductions in impact. We find that environmental impacts, such as global warming potential, do not decrease with certification. We also find that salmon feed, in contrast to the on-site aquaculture practices, dominates the environmental impacts of salmon aquaculture and contributes to over 80% of impacts in ozone depletion, global warming potential, acidification, and ecotoxicity. Based on these findings, we recommend that eco-labeling groups prioritize reducing the environmental impacts of the feed supply chain.
4
Osmaleli, Osmaleli. "Economic Impact of the Eel. Eel (Anguilla Bicolor) Aquaculture on Local Communities in Banyuwangi Regency". Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) 13, n. 1 (10 marzo 2023): 114–21. http://dx.doi.org/10.29244/jpsl.13.1.114-121.
Abstract (sommario):
Aquaculture in Indonesia has several superior commodities, one of which is eel. Eel (Anguilla bicolor) is a fish with high economic value and a type of fish that is an export commodity (Japan, Hong Kong, Germany, Italy, and several other countries). This condition is inversely proportional to the level of domestic eel consumption which is still relatively low. Aquaculture activities provide direct and indirect impacts on the local society, one of them is the economic impact of the existence of giant mottled eel aquaculture in the Banyuwangi District. The research aimed to analyze the economic impact of giant mottled eel aquaculture activities. The Survey research method was used and data were analyzed using descriptive and multiplier effect analysis. The research result of the economic impacts of giant mottled eel aquaculture that provides a positive economic impact on local society is indicated by the development of giant mottled eel aquaculture activities and the other sectors. Keynesian Local Income Multiplier value was 2.65. Type I Multiplier Income Ratio was 1.16 and Type II Multiplier Income Ratio was 1.6.
5
Slater, Matthew J. "Societal and Economic Impacts of Aquaculture". Journal of the World Aquaculture Society 48, n. 4 (19 giugno 2017): 539–41. http://dx.doi.org/10.1111/jwas.12445.
6
Tiutiunnyk, Hanna. "AQUACULTURE INNOVATION AND MULTIFUNCTIONAL CENTERS: ENHANCING AQUACULTURE MARKET DEVELOPMENT". Grail of Science, n. 29 (18 luglio 2023): 32–34. http://dx.doi.org/10.36074/grail-of-science.07.07.2023.002.
Abstract (sommario):
Aquaculture activities are conducted worldwide primarily to provide food for the population. However, this industry also holds significant potential for recreation and conservation of natural resources, including biodiversity protection. The modern world is increasingly recognizing the importance of preserving natural resources and shifting from a purely commercial approach to a broader social perspective, aligning with the principles of Sustainable Development Goals. Effective aquaculture management should consider the potential impacts on the ecosystem and local communities. These impacts may vary and encompass factors such as water and habitat quality, carbon footprint, recreational opportunities, cultural preservation, and social aspects. It is crucial to ensure a balance in the use of water resources, considering the benefits and costs associated with their utilization for present and future generations. Aquaculture can contribute significantly to the development of both urban and rural areas, making it essential to promote its sustainable practices for economic resource generation.
7
Evans, Keith S., Xuan Chen e Christina A. Robichaud. "A Hedonic Analysis of the Impact of Marine Aquaculture on Coastal Housing Prices in Maine". Agricultural and Resource Economics Review 46, n. 2 (25 luglio 2017): 242–67. http://dx.doi.org/10.1017/age.2017.19.
Abstract (sommario):
Converting coastal waters to farmed production of seafood may generate conflicts with other resource users. This study explores the impact of marine aquaculture development on coastal homeowners. Using single-family home sales from 2012–2014 and spatial data on coastal aquaculture activity, we employ hedonics to assess the impacts of mariculture development in three study areas of Maine, USA. Our results suggest modest impacts on residential property values with significant spatial variation across study areas. This spatial variation represents a challenge for managers and highlights the potential benefits from coordinating the development of aquaculture to balance resource users' objectives with industry growth.
8
Anderson, James L., Frank Asche e Taryn Garlock. "Economics of Aquaculture Policy and Regulation". Annual Review of Resource Economics 11, n. 1 (5 ottobre 2019): 101–23. http://dx.doi.org/10.1146/annurev-resource-100518-093750.
Abstract (sommario):
Since the Blue Revolution began in the late 1960s, global aquaculture production has grown rapidly. Aquaculture now accounts for over half of the world's fish for direct human consumption and is expected to approach two-thirds by 2030. With aquaculture's growth, a number of high-profile concerns have arisen, including pollution, feeding practices, disease management and antibiotic use, habitat use, non-native species, food safety, fraud, animal welfare, impacts on traditional wild fisheries, access to water and space, market competition, and genetics. Managing these concerns requires thoughtful and well-designed policies and regulations. This manuscript reviews the contributions natural resource economics has made to evaluating aquaculture policy and regulation. Despite their valuable contributions, however, economists have been largely underrepresented in the debate. The primary influencers of aquaculture policies and regulations have been traditional fisheries managers, environmental groups, and natural scientists. We identify many important areas that should be more thoroughly addressed by economists.
9
Zhang, Yadong, Abubakar Shitu, Shengyu Hang, Zhangying Ye, Wen Xu, Hangfang Zhao, Jian Zhao e Songming Zhu. "Assessing the Impacts of Aquaculture Soundscapes on the Growth, Physiology and Behavior of Micropterus salmoides". Fishes 8, n. 7 (21 luglio 2023): 377. http://dx.doi.org/10.3390/fishes8070377.
Abstract (sommario):
Sound has a potential impact on animal welfare and production, but the impacts of soundscapes on aquaculture species in different aquaculture production systems have been rarely studied. This study investigated the impact of varying aquaculture soundscapes on largemouth bass (Micropterus salmoides). Three soundscapes were administered to replicated tanks: Recirculating Aquaculture System (RAS:107.7 dB re 1 Pa RMS), In-Pond Raceway System (IPRS:115.1 dB re 1 Pa RMS), and Ambient (70.4 dB re 1 Pa RMS) as the control. The initial weight of fish in the three groups was 3.59 ± 0.30 g. Following a 50-day experimental period, the average weight of the Ambient group (14.08 ± 0.13 g) was significantly greater than that of the IPRS group (12.79 ± 0.08 g) (p < 0.05). Examination of physiological samples revealed that the soundscape negatively impacted the fish’s immunological, anti-oxidation, and digestive enzymes. Furthermore, the external noise also influenced the locomotive patterns of the fish aggregations. Fish polarity and cohesion were significantly more discrete (p < 0.05) in both the RAS (47.79 ± 2.34° and 98.52 ± 3.22 mm) and IPRS groups (48.04 ± 0.70° and 87.70 ± 7.31 mm) compared to the Ambient group (42.76 ± 1.42° and 85.73 ± 1.57 mm). These results highlight the significant impacts of the aquaculture soundscape on the development, physiological activities, and behavioral traits of largemouth bass. Future research should focus on determining and optimizing the impact of different equipment noise to ensure optimal welfare and production performance in aquaculture systems.
10
Vásquez-Quispesivana, Wilfredo, Marianela Inga e Indira Betalleluz-Pallardel. "Artificial intelligence in aquaculture: basis, applications, and future perspectives". Scientia Agropecuaria 13, n. 1 (28 marzo 2022): 79–96. http://dx.doi.org/10.17268/sci.agropecu.2022.008.
Abstract (sommario):
Advances in data management technologies are being adapted to resolve difficulties and impacts that aquaculture manifests, some aspects that over the years have not been fully managed, are now more feasible to solve, such as the optimization of variables that intervene in the growth and increase of biomass, the prediction of water quality parameters to manage and make decisions during farming fish, the evaluation of the aquaculture environment and the impact generated by aquaculture, the diagnosis of diseases in aquaculture fish to determine more specific treatments, handling, management and closure of aquaculture farms. The objective of this article was to review within the last 20 years the various techniques, methodologies, models, algorithms, software, and devices that are used within artificial intelligence, machine learning and deep learning systems, to solve in a simpler way, quickly and precisely the difficulties and impacts that aquaculture manifests. In addition, the fundamentals of artificial intelligence, automatic learning and deep learning are explained, as well as the recommendations for future study on areas of interest in aquaculture, such as the reduction of production costs through the optimization of feeding based on good aquaculture practices and parameters of water quality, the identification of sex in fish that do not present sexual dimorphism, the determination of quality attributes such as the degree of pigmentation in salmon and trout.
11
Aslam Hosain, Mohammad, e Xue Liangyi. "Impacts of probiotics on feeding technology and its application in aquaculture". SDRP Journal of Aquaculture, Fisheries & Fish Science 3, n. 1 (2020): 174–85. http://dx.doi.org/10.25177/jaffs.3.1.ra.622.
12
Thompson, Paul M., A. K. M. Firoz Khan e Parvin Sultana. "COMPARISON OF AQUACULTURE EXTENSION IMPACTS IN BANGLADESH". Aquaculture Economics & Management 10, n. 1 (gennaio 2006): 15–31. http://dx.doi.org/10.1080/13657300500315786.
13
Silvert, W., e J. W. Sowles. "Modelling environmental impacts of marine finfish aquaculture". Journal of Applied Ichthyology 12, n. 2 (luglio 1996): 75–81. http://dx.doi.org/10.1111/j.1439-0426.1996.tb00066.x.
14
Nash, Colin E. "Impacts of environment on animals and aquaculture". Aquaculture 95, n. 3-4 (giugno 1991): 386–87. http://dx.doi.org/10.1016/0044-8486(91)90108-j.
15
Keyser, Freya, Brendan F. Wringe, Nicholas W. Jeffery, J. Brian Dempson, Steven Duffy e Ian R. Bradbury. "Predicting the impacts of escaped farmed Atlantic salmon on wild salmon populations". Canadian Journal of Fisheries and Aquatic Sciences 75, n. 4 (aprile 2018): 506–12. http://dx.doi.org/10.1139/cjfas-2017-0386.
Abstract (sommario):
The escape of Atlantic salmon (Salmo salar) from aquaculture facilities can result in both negative genetic and ecological interactions with wild populations, yet the ability to predict the associated risk to wild populations has remained elusive. Here we assess the potential of a spatiotemporal database of aquaculture facility locations, production estimates, and escape events to predict the distribution of escaped farmed salmon and genetic impacts on wild populations in the Northwest Atlantic. Industry production data, reported escape events, and in-river detections of escaped farmed salmon were collected from across the Northwest Atlantic. Genetic estimates of impact were obtained using single nucleotide polymorphisms (95 loci) representing aquaculture and wild salmon throughout the region (30 populations, 3048 individuals). Both the number of escaped farmed salmon detected at counting facilities and the magnitude of genetic impacts were positively correlated with a cumulative spatial measure of aquaculture production. Our results suggest that the risk of escapees and genetic introgression from wild–farmed salmon interactions can be assessed using information on farm production characteristics. This represents a first step in predicting the impact of existing cage-based farms on wild Atlantic salmon.
16
Xuan, Bui Bich, e Erlend Dancke Sandorf. "Potential for Sustainable Aquaculture: Insights from Discrete Choice Experiments". Environmental and Resource Economics 77, n. 2 (4 agosto 2020): 401–21. http://dx.doi.org/10.1007/s10640-020-00500-6.
Abstract (sommario):
Abstract The growth in global aquaculture production may address the lack of sustainability in wild fisheries, alleviate poverty in rural and coastal areas, and help meet the worldwide increase in demand for animal protein. However, there is an ongoing debate about the severity of the environmental impact of aquaculture production. Investing in new high-tech production systems can address both productivity growth and the environmental externalities, but high investment costs hinder adoption of high-tech production methods. We investigate the potential of a payment for environmental services program easing access to capital for producers to increase willingness-to-invest in more sustainable aquaculture practices in Vietnam. We conducted two discrete choice experiments to explore the supply and demand side of the policy. First, we elicited the public’s willingness-to-pay to reduce the environmental impact of conventional shrimp aquaculture, and second, we elicited farmers willingness-to-accept a credit subsidy to invest in high-tech production methods. Our results show that the public care about reduced environmental impacts, while farmers strongly prefer increased productivity. Furthermore, the public’s willingness-to-pay for reduced environmental impacts exceeds producer’s willingness-to-accept a subsidy to invest under most scenarios. This implies a potential for more sustainable aquaculture production in Vietnam.
17
Awotunde, Mathew. "Climate Change Impacts on Aquaculture Systems in Key Producing Nations: Assessing Vulnerability and Proposing a Novel Adaptation Measure". Asian Journal of Fisheries and Aquatic Research 26, n. 2 (7 febbraio 2024): 20–36. http://dx.doi.org/10.9734/ajfar/2024/v26i2733.
Abstract (sommario):
Climate change poses a significant threat to the aquaculture industry, impacting both the productivity and sustainability of this vital sector. This study focuses on the vulnerability of the top aquaculture producing nations to climate change and explores potential novel adaptation strategy. The vulnerability assessment considered various factors, including the exposure of aquaculture systems to climate change, Productivity of the industry, climate change initiators and the GDP of each nation surveyed. The study identifies the United Kingdom (UK) aquaculture as the most vulnerable and at risk of climate change impacts followed by the United States of America (USA) and Nigeria’s aquaculture. In terms of continents, Europe, Oceania, and Africa are identified as the most vulnerable regions, while America and Asia are considered the least vulnerable. The UK, with its extensive aquaculture operations and geographical exposure to climate change risks, faces significant challenges in adapting to changing conditions especially with the exit from European Union (Brexit). The USA, another major aquaculture producer, also faces vulnerability due to its diverse range of climatic conditions and coastal aquaculture operations. Nigeria, a prominent aquaculture producer in Africa, is highly vulnerable to climate change due to its dependence on freshwater aquaculture systems leading to low water usage in aquaculture despite vast marine water resource. Strict measures including novel adaptation measure such as the NanoSolar technique must be put in place in these countries in other to ensure that aquaculture production doesn’t decline and also to ensure that global food security is not put under pressure with the growing world population size.
18
Brown-Webb, Bernadette, Azwihangwisi E. Nesamvuni, Melanie De Bruyn, Johan A. Van Niekerk e Parsuramen Pillay. "Assessing the impacts of COVID-19 on the aquaculture industry in South Africa, using the marine mussel farming sector as a case study". Technium Social Sciences Journal 29 (9 marzo 2022): 363–80. http://dx.doi.org/10.47577/tssj.v29i1.5929.
Abstract (sommario):
This study investigated the impacts of COVID-19 on the aquaculture sector in South Africa. The study was conducted on the West Coast of the Western Cape, South Africa. A multiple-case study approach was followed, focusing on the marine mussel farming sub-sector in Saldanha Bay. Semi-structured interviews were conducted with the owners or managers of nine mussel farming enterprises, and with nine representatives of role players with responsibility or experience in aquaculture, agriculture, or enterprise development. The results of the study focussed on the impacts of COVID-19 on the aquaculture sector and role player organizations; COVID-19 support; initiatives for preparation, survival, and rebuilding; factors promoting resilience, survival, and rebuilding; and requirements to survive and rebuild the sector. The main impact on the aquaculture sector was the closure of markets, which led to cascading impacts on all aspects of the value chain. Role players were affected through impacts on programmes, projects, and staff. Various COVID-19 relief schemes were made available however these could not address all the needs of the sector. Enterprises prepare for the pandemic and the future through long term planning. The main factors contributing to resilience were subsidisation from shareholders, having reserve funds and multiple streams of revenue. The most critical requirements to survive and rebuild the sector was financial support and the opening of markets. The study recommends follow up assessments of the aquaculture industry to fully understand and quantify the effects of the prolonged pandemic and provide tailor-made solutions for each sub-sector to stabilise, revive and grow the aquaculture sector in the medium to long term. Aquaculture enterprises that have closed or are at risk of closure should be prioritised first before any investment in new ventures is considered. In addition, the development of an aquaculture industry-based Business Continuity Strategy and the Ocean Economy Master plan should be prioritised to assist enterprises until the pandemic is over, to prepare for normalisation of operations thereafter, and to prepare the sector and individual enterprises to be more resilient in case of future global crises and disasters.
19
Hou, Haochen, Anqi Ren, Lixingbo Yu, Zhen Ma, Yun Zhang e Ying Liu. "An Environmental Impact Assessment of Largemouth Bass (Micropterus salmoides) Aquaculture in Hangzhou, China". Sustainability 15, n. 16 (14 agosto 2023): 12368. http://dx.doi.org/10.3390/su151612368.
Abstract (sommario):
With the rapid increase in aquaculture production, its role in food safety and nutritional security has become increasingly important, but this has also given rise to environmental problems that cannot be ignored. The largemouth bass (Micropterus salmoides) has become a widely cultivated and highly economic freshwater farmed species since it was introduced to China in 1983; however, the environmental impacts of its freshwater pond aquaculture process have not yet been elucidated. Here, life cycle assessment (LCA), a decision-making tool that can evaluate and identify environmental issues during production processes, was used to evaluate the environmental performance of the largemouth bass freshwater pond aquaculture process, and a large-scale, commercial company was selected as an example in Hangzhou, China. The results showed that the pond-farming stage and marine aquatic ecotoxicity potential (MAETP) had the largest environmental impacts on the entire aquaculture process. An environmental contribution analysis indicated that electricity (48%) and emissions (23%) were two key factors in the seed-rearing stage, and electricity (60%) and feeds (26%) were two main impact contributors in the pond-farming stage. Improvement measures based on emerging technologies in aquaculture were discussed, namely, clean energies, industrial pond farming, and intelligent feeding strategies, to help with decision making for continuous improvement in the environmental performance of largemouth bass pond farming. Moreover, suggestions for further aquaculture LCA studies in China were summarized, as they will provide a useful reference for promoting the development of China’s aquaculture LCA research and the enrichment of the world’s aquaculture life cycle inventory databases.
20
Zhou, Jinxin, Teng Tu, Huajin Wang e Daisuke Kitazawa. "Modeling Environmental Impacts of Intensive Shrimp Aquaculture: A Three-Dimensional Hydrodynamic Ecosystem Approach". Fishes 9, n. 4 (31 marzo 2024): 126. http://dx.doi.org/10.3390/fishes9040126.
Abstract (sommario):
Already a multibillion-dollar global industry, shrimp aquaculture, is growing all the time. The intensive method, which is the most common method in shrimp aquaculture, remains commercially challenged due to the expenditures associated with environmental pollution abatement. Although the comprehensive understanding of this intricate aquaculture environment has been advanced using mathematical modeling, recent attempts to improve the model’s structure have not yielded enough results. This work upgraded the previous method to a three-dimensional hydrodynamic ecosystem model with the effects of shrimps being replaced by approximation equations for the environmental assessment of a shrimp aquaculture pond in Kyushu District, Japan. Our approach was successful, as demonstrated by the high consistency of the simulation results when compared to observation data and the previous results. Additionally, we first revealed the impacts of stratification and confirmed the notable daily variation in the water quality. Our case study offers significant practical information on the characteristics of intensive shrimp aquaculture, implications for long-term sustainable operations, and future research priorities on local-scale ecosystem modeling.
21
Boison, Joe O., e Sherri B. Turnipseed. "A Review of Aquaculture Practices and Their Impacts on Chemical Food Safety from a Regulatory Perspective". Journal of AOAC INTERNATIONAL 98, n. 3 (1 maggio 2015): 541–49. http://dx.doi.org/10.5740/jaoacint.15-033.
Abstract (sommario):
Abstract Aquaculture is currently one of the most rapidly growing food production industries in the world. The increasing global importance for this industry stems primarily from the fact that it is reducing the gap between the supply and demand for fish products. Commercial aquaculture contributes significantly to the economies of many countries since high-value fish species are a major source of foreign exchange. This review looks at the aquaculture industry, the issues raised by the production of fish through aquaculture for food security, the sustainability of the practice to agriculture, what the future holds for the industry in the next 10-20 years, and why there is a need to have available analytical procedures to regulate the safe use of chemicals and veterinary drugs in aquaculture.
22
Couture, Jessica L., Darcy Bradley, Benjamin S. Halpern e Steven D. Gaines. "Could fish aggregation at ocean aquaculture augment wild populations and local fisheries?" PLOS ONE 19, n. 4 (17 aprile 2024): e0298464. http://dx.doi.org/10.1371/journal.pone.0298464.
Abstract (sommario):
The global population consumes more seafood from aquaculture today than from capture fisheries and although the aquaculture industry continues to grow, both seafood sectors will continue to be important to the global food supply into the future. As farming continues to expand into ocean systems, understanding how wild populations and fisheries will interact with farms will be increasingly important to informing sustainable ocean planning and management. Using a spatially explicit population and fishing model we simulate several impacts from ocean aquaculture (i.e., aggregation, protection from fishing, and impacts on fitness) to evaluate the mechanisms underlying interactions between aquaculture, wild populations and fisheries. We find that aggregation of species to farms can increase the benefits of protection from fishing that a farm provides and can have greater impacts on more mobile species. Splitting total farm area into smaller farms can benefit fishery catches, whereas larger farms can provide greater ecological benefits through conservation of wild populations. Our results provide clear lessons on how to design and co-manage expanding ocean aquaculture along with wild capture ecosystem management to benefit fisheries or conservation objectives.
23
Findlay, David L., Cheryl L. Podemski e Susan E. M. Kasian. "Aquaculture impacts on the algal and bacterial communities in a small boreal forest lakeThis paper is part of the series “Forty Years of Aquatic Research at the Experimental Lakes Area”." Canadian Journal of Fisheries and Aquatic Sciences 66, n. 11 (novembre 2009): 1936–48. http://dx.doi.org/10.1139/f09-121.
Abstract (sommario):
A whole-lake experiment to examine the impacts of aquaculture on a freshwater ecosystem was conducted at the Experimental Lakes Area in northwestern Ontario, Canada. From 2003 to 2006, a 10 tonne fish capacity aquaculture cage stocked with rainbow trout ( Oncorhynchus mykiss ) was operated in Lake 375 and the impact of excess nutrients on the algal and bacteria communities was examined. The experiment was designed as a nutrient loading experiment with fish food and fish excretion the source of nutrients. Total N and P concentrations increased over the 4 years (15× and 4×, respectively). Phytoplankton biomass increased 4× annually following the start of aquaculture operation in 2003. The most dramatic responses occurred during spring and fall mixing, with blooms of chrysophytes and dinoflagellates increasing biomass by up to 12×. Bacteria biomass and densities were unaffected except for increases in late fall. Periphyton biomass was relatively unaffected except for an increase in biomass in the fourth year. The combination of a long water residence time in the lake coupled with an extremely high fish stocking density in Lake 375 resulted in an immediate impact on water quality. The results suggest that the impacts of aquaculture are accumulative and continual stocking will further impact water quality.
24
Watterson, Andrew, David Little, James A. Young, Francis Murray, Larry Doi, Kathleen A. Boyd e Ekram Azim. "Scoping a Public Health Impact Assessment of Aquaculture with Particular Reference to Tilapia in the UK". ISRN Public Health 2012 (4 marzo 2012): 1–18. http://dx.doi.org/10.5402/2012/203796.
Abstract (sommario):
Background. The paper explores shaping public health impact assessment tools for tilapia, a novel emergent aquaculture sector in the UK. This Research Council’s UK Rural Economy and Land Use project embraces technical, public health, and marketing perspectives scoping tools to assess possible impacts of the activity. Globally, aquaculture produced over 65 million tonnes of food in 2008 and will grow significantly requiring apposite global public health impact assessment tools. Methods. Quantitative and qualitative methods incorporated data from a tridisciplinary literature. Holistic tools scoped tilapia farming impact assessments. Laboratory-based tilapia production generated data on impacts in UK and Thailand along with 11 UK focus groups involving 90 consumers, 30 interviews and site visits, 9 visits to UK tilapia growers and 2 in The Netherlands. Results. The feasibility, challenges, strengths, and weaknesses of creating a tilapia Public Health Impact Assessment are analysed. Occupational and environmental health benefits and risks attached to tilapia production were identified. Conclusions. Scoping public health impacts of tilapia production is possible at different levels and forms for producers, retailers, consumers, civil society and governmental bodies that may contribute to complex and interrelated public health assessments of aquaculture projects. Our assessment framework constitutes an innovatory perspective in the field.
25
Muralidhar, M., M. Kumaran, M. Jayanthi, J. Syama Dayal, J. Ashok Kumar, R. Saraswathy e A. Nagavel. "Impacts of climate change and adaptations in shrimp aquaculture: A study in coastal Andhra Pradesh, India". Aquatic Ecosystem Health & Management 24, n. 3 (1 luglio 2021): 28–38. http://dx.doi.org/10.14321/aehm.024.03.05.
Abstract (sommario):
Abstract Shrimp aquaculture in India is synonymous with coastal aquaculture. Like other agricultural activities, it appropriates a wide range of environmental goods and services, and is vulnerable to impacts of climate change as the cultured animals are sensitive to various kinds of biotic and abiotic stressors. Climate change affects the shrimp aquaculture directly by extreme weather events and seasonal variations, and indirectly alter the primary and secondary productivity, structure and composition of the ecosystems or by influencing the availability of fishmeal, fish oil and other goods and services required for aquaculture farmers. The perceptions of farmers on the impacts of climate change on shrimp aquaculture in inland and coastal areas of Krishna District, Andhra Pradesh are discussed. Cyclone and flood were perceived by all the farmers, whereas irregular season, high temperature, heavy rain and drought were perceived by 79, 89, 91 and 5 % of farmers, respectively. Environmental, biological, and economic impacts of climate change drivers on aquaculture indicated 20 to 30 % loss due to seasonal variations and 50 to 100% loss due to extremely heavy rainfall, flood and cyclones. The economic risk rating was high with flood followed by the cyclone and the magnitude was more in coastal areas compared to inland areas. There is no universally applicable list of adaptation measures and need to be evaluated for individual aquaculture systems. Autonomous and planned adaptation measures to be implemented by farmers, researchers and policymakers are discussed for climate-resilient aquaculture. Planned adaptive measures are either at the primary level or non-existence, hence policy initiatives are required to formulate planned adaptive measures to enhance the adaptive capacity of the farmers.
26
Munguti, Jonathan, Jacob O. Iteba, Nicholas Outa, James G. Kirimi, Daniel Mungai, Domitila Kyule, Kevin Obiero e Erick O. Ogello. "Reviewing the Impacts of COVID-19 Pandemic on the Kenyan Aquaculture Sector and Future Adaptive Strategies". Journal of Agricultural Science 15, n. 1 (15 dicembre 2022): 70. http://dx.doi.org/10.5539/jas.v15n1p70.
Abstract (sommario):
For many Kenyans, the aquaculture business provides a vital source of food and work. However, information on Kenya’s aquaculture sector’s resilience in the face of emerging global shocks such as the COVID-19 pandemic requires additional examination. Prior to the epidemic, Kenya’s aquaculture industry had grown from a tiny participant to a critical component of the country’s fish food system, with fish and fisheries products becoming the most extensively traded food commodity in Kenyan market places. However, as indicated in the review, the aquaculture value chain has not been scrutinised since the onset of COVID-19. Lockdowns enacted during the pandemic had a significant influence on access to aquaculture inputs, fish commerce, and the socio-economic livelihoods of stakeholders and players in Kenya’s aquaculture value chain. Thus, initial and long-term adaptive strategies, particularly those implemented by governments, could help to the development of COVID-19 specific and generic resilience to numerous shocks and stressors among stakeholders and players involved in the country’s aquaculture industry. Some of the measures include a government incentive package to help the fisheries and aquaculture sectors recover, improve farming operations, and gain market trust, as well as the adoption of new methods to reduce labor intensity, such as intelligent sensors, camera systems, and automated or remotely controlled monitoring/feeding strategies. Such strategies and policies can protect the sector from future shocks triggered by pandemics and other unforeseen circumstances.
27
Hoa, Le Thi. "The Impact of Saltwater Intrusion on Rice Cultivation and Aquaculture in Ham Tan Commune, Tra Cu District, Tra Vinh Province, Mekong Delta, Vietnam". European Scientific Journal, ESJ 19, n. 22 (31 agosto 2023): 27. http://dx.doi.org/10.19044/esj.2023.v19n22p27.
Abstract (sommario):
This article discusses the impact of saltwater intrusion on rice cultivation and aquaculture in Ham Tan commune, Tra Cu District, Tra Vinh Province, Mekong Delta, Vietnam. Based on 15 in-depth interviews and sociological surveys conducted in Ham Tan commune, Tra Cu District, Tra Vinh Province, the article highlights the main findings. Firstly, rice cultivation and aquaculture in Ham Tan are multidimensionally affected by the negative impacts of saltwater intrusion. Secondly, saltwater intrusion reduces crop yields and decreases the area available for rice cultivation. It also increases labor days and investment costs in rice production. Thirdly, saltwater intrusion decreases the productivity of aquaculture. In fact, a significant number of households engaged in aquaculture experienced complete losses due to saltwater intrusion.
28
Falconer, Lynne, Trevor C. Telfer, Angus Garrett, Øystein Hermansen, Eirik Mikkelsen, Solfrid Sætre Hjøllo, Bruce J. McAdam e Elisabeth Ytteborg. "Insight into real-world complexities is required to enable effective response from the aquaculture sector to climate change". PLOS Climate 1, n. 3 (1 marzo 2022): e0000017. http://dx.doi.org/10.1371/journal.pclm.0000017.
Abstract (sommario):
This study demonstrates how a comprehensive knowledge base can be used by the aquaculture industry, researchers, and policymakers as a foundation for more targeted and detailed climate change impact analysis, risk assessments and adaptation planning. Atlantic salmon (Salmo salar) production in Norway was used as a case study and to illustrate the need to consider impacts from multiple stressors across different production stages and the wider supply chain. Based on literature searches and industry news, a total of 45 impacts and 101 adaptation responses were identified. Almost all impacts were linked to multiple climate stressors, and many adaptation responses can be used for a range of impacts. Based on the research, a move towards more targeted and detailed assessments is recommended. This can be facilitated through a strong knowledge base, further research to address complexities, and better communication between all stakeholders. The results also demonstrate the need for more climate change research that reflects the challenges that the aquaculture sector faces, where multiple stressors and the range of impacts across production stages and the wider supply chain are included. Highlighting the wide range of stressors, impacts and adaptation responses provides a more holistic understanding of the real-world complexities that aquaculture producers face. This again could facilitate adoption of more effective responses to climate change needed to maintain or increase production sustainably.
29
Liu, Xuehai, e Xuelei Zhang. "Impacts of High-Density Suspended Aquaculture on Water Currents: Observation and Modeling". Journal of Marine Science and Engineering 10, n. 8 (20 agosto 2022): 1151. http://dx.doi.org/10.3390/jmse10081151.
Abstract (sommario):
Large-scale aquaculture activities in China have been rapidly developing in coastal waters, and they inevitably affect hydrodynamic structures and, hence, substance transportation. Predicting the effects is critical for understanding the environmental ecology and biochemical processes in these waters. To realize the solution, we conducted a field observation in Sungo Bay, which is an important aquaculture bay in China, and we developed a three-dimensional numerical model by arranging so-called porous structures, representing the aquaculture facilities, on grids of the culture layers. The energy-loss coefficients were specified to determine the momentum loss by the friction of the structures. We determined the appropriate coefficients for the oyster, scallop, and kelp cultures by using numerical simulation. According to the observation and model results, the aquaculture substantially weakened the current velocities in the culture layers and altered the vertical structures of the water currents. For this high-density and large-scale culture bay, the decrease rates of the current velocities in the culture layer were up to ~68%, ~65% and ~60% in the culture zones of oysters, scallops, and kelps, respectively. Bivalve cultures and kelp and bivalve cultures reduced the water-exchange ability of the bay by 33% and 50%, respectively. The method and results of this study provide a reference for studies on other aquaculture bays.
30
Hargrave, BT. "Empirical relationships describing benthic impacts of salmon aquaculture". Aquaculture Environment Interactions 1, n. 1 (30 giugno 2010): 33–46. http://dx.doi.org/10.3354/aei00005.
31
Anyanwu, C. N., D. I. Osuigwe e G. S. Adaka. "Climate Change: Impacts and Threats on Freshwater Aquaculture". Journal of Fisheries and Aquatic Science 9, n. 5 (15 agosto 2014): 419–24. http://dx.doi.org/10.3923/jfas.2014.419.424.
32
Tovar, Antonio, Carlos Moreno, Manuel P. Mánuel-Vez e Manuel Garcı́a-Vargas. "Environmental impacts of intensive aquaculture in marine waters". Water Research 34, n. 1 (gennaio 2000): 334–42. http://dx.doi.org/10.1016/s0043-1354(99)00102-5.
33
Pouomogne, Victor, Randall E. Brummett e M. Gatchouko. "Impacts of Aquaculture Development Projects in Western Cameroon". Journal of Applied Aquaculture 22, n. 2 (6 maggio 2010): 93–108. http://dx.doi.org/10.1080/10454431003736078.
34
Son, Lam Vinh, Nguyen Vu Phong, Ta Trung Kien, Nguyen Thi Phu’o’ng Chau, Le Thanh Hoa e Vo Le Phu. "Impacts of Livelihood Activities on the Environment and Natural Resources of Can Gio Mangrove Forest, Ho Chi Minh City". IOP Conference Series: Earth and Environmental Science 964, n. 1 (1 gennaio 2022): 012014. http://dx.doi.org/10.1088/1755-1315/964/1/012014.
Abstract (sommario):
Abstract In recent years, local livelihood activities in the Can Gio district have increased significantly, including aquaculture practices, aquaculture cultivation, salt-works, forest guard, farming, livestock, tourism, and etc. These livelihood activities have contributed remarkably to the local economy and the improvement of living conditions for local people. However, the burgeoning development of these activities have posed negative impacts on the mangrove ecosystem in Can Gio. In which, the use and exploitation of existing human and natural resources are paid inadequate attention. The purpose of this study is to identify livelihoods by conducting a survey with 536 questionnaire samples in both the buffer and transition zones in Can Gio Mangrove Forest. In addition, the quality of surface water sources was examined by collecting 70 surface water and wastewater samples. The results show that the quality of surface water meets the allowable limits of QCVN 08-MT:2015/BTNMT. The extent of the impact from livelihood activities on the environment of mangrove forest is at the medium level. However, the livelihood of aquaculture cultivation practices has the most affect on the environment and natural resources and is posing negative impacts on the quality of water sources in Can Gio Mangrove Forest. Therefore, these findings will be useful information for decision makers of the local authority in building an appropriate planning for aquaculture cultivation area. Further, irrigation and drainage systems for aquaculture practices need to be invested to control and handle wastes from aquaculture cultivation areas.
35
Froehlich, Halley E., Claire A. Runge, Rebecca R. Gentry, Steven D. Gaines e Benjamin S. Halpern. "Comparative terrestrial feed and land use of an aquaculture-dominant world". Proceedings of the National Academy of Sciences 115, n. 20 (30 aprile 2018): 5295–300. http://dx.doi.org/10.1073/pnas.1801692115.
Abstract (sommario):
Reducing food production pressures on the environment while feeding an ever-growing human population is one of the grand challenges facing humanity. The magnitude of environmental impacts from food production, largely around land use, has motivated evaluation of the environmental and health benefits of shifting diets, typically away from meat toward other sources, including seafood. However, total global catch of wild seafood has remained relatively unchanged for the last two decades, suggesting increased demand for seafood will mostly have to rely on aquaculture (i.e., aquatic farming). Increasingly, cultivated aquatic species depend on feed inputs from agricultural sources, raising concerns around further straining crops and land use for feed. However, the relative impact and potential of aquaculture remains unclear. Here we simulate how different forms of aquaculture contribute and compare with feed and land use of terrestrial meat production and how spatial patterns might change by midcentury if diets move toward more cultured seafood and less meat. Using country-level aquatic and terrestrial data, we show that aquaculture requires less feed crops and land, even if over one-third of protein production comes from aquaculture by 2050. However, feed and land-sparing benefits are spatially heterogeneous, driven by differing patterns of production, trade, and feed composition. Ultimately, our study highlights the future potential and uncertainties of considering aquaculture in the portfolio of sustainability solutions around one of the largest anthropogenic impacts on the planet.
36
Ang, Chun-Yao, Annita Seok Kian Yong, Sujjat Al Azad, Leong-Seng Lim, Wahidatul Husna Zuldin e Mohammad Tamrin Mohamad Lal. "Valorization of Macroalgae through Fermentation for Aquafeed Production: A Review". Fermentation 7, n. 4 (10 dicembre 2021): 304. http://dx.doi.org/10.3390/fermentation7040304.
Abstract (sommario):
The increased development of aquaculture has resulted in increased demand for high-protein aquafeed. An increased demand for high-protein aquafeed means an increase in exploitation of unsustainable protein sources such as fishmeal for aquafeed production. Thus, alternative protein sources such as fermented macroalgae is explored. Fermented macroalgae had been tested as aquaculture diets in some studies, but with limited coverage in relation to aquaculture. Therefore, this review provides a new perspective regarding their nutritional qualities as aquaculture diets, and their impacts on growth performances of aquaculture animals.
37
Gross, Mart R. "One species with two biologies: Atlantic salmon (Salmo salar) in the wild and in aquaculture". Canadian Journal of Fisheries and Aquatic Sciences 55, S1 (1 gennaio 1998): 131–44. http://dx.doi.org/10.1139/d98-024.
Abstract (sommario):
Today, over 94% of all adult Atlantic salmon (Salmo salar) are in the aquaculture niche and wild numbers continue to decline while aquaculture numbers increase. The developmental and evolutionary forces in the aquaculture or "domestic" niche are so unlike those in the wild niche that two distinct biologies are being created from the original Atlantic salmon species. We may now need to recognize a new biological entity - Salmo domesticus - and treat it as an "exotic" when it escapes into the wild. Escapement therefore raises important concerns about ecological and genetic impacts, both within and outside the native range of Salmo salar. This paper explains why escaped domestic Atlantic salmon have had an impact on wild Atlantic salmon populations and now threaten Pacific salmonids as well. A polarization of views between aquaculturists and environmentalists will not resolve the problems. The three interest groups in fisheries - aquaculture, biodiversity, and capture - must begin to work together if we are to take up the challenge of preserving biodiversity and if aquaculturists, who hold the future of Atlantic salmon in their hands, can be expected to willingly prevent further impacts from their industry.
38
Meng, Yaru, Jiajun Zhang, Xiaomei Yang e Zhihua Wang. "Spatial–Temporal Mapping and Landscape Influence of Aquaculture Ponds in the Yangtze River Economic Belt from 1985 to 2020". Remote Sensing 15, n. 23 (23 novembre 2023): 5477. http://dx.doi.org/10.3390/rs15235477.
Abstract (sommario):
Most current research on aquaculture ponds focuses on coastal areas, leaving a gap in understanding of inland regions, such as the strategically significant Yangtze River Economic Belt in China. This study introduces an intelligent extraction method for extensive monitoring of aquaculture ponds in Yangtze River Economic Belt, using Landsat and Sentinel data from 1985 to 2020 with five-year intervals based on the Google Earth Engine (GEE) platform. Land cover change data were also analyzed to understand the impact of aquaculture-related changes. Results indicate a significant increase in aquaculture ponds in the Yangtze River Economic Belt from 3235.51 km2 to 14,207.08 km2 between 1985 and 2020. Aquaculture activity primarily shifted eastward from 1985 to 2015, then westward from 2015 to 2020. Approximately 2018.36 km2 of aquatic areas underwent conversion, mainly to water bodies or croplands, with fewer transitions to impervious surfaces, grasslands, or forests. This study highlights that inland areas can also experience significant increases in aquaculture ponds, particularly alongside large rivers, and that the environmental impacts of these changes differ from those in coastal areas, warranting specific attention.
39
Sampantamit, Tiptiwa, Long Ho, Carl Lachat, Nantida Sutummawong, Patrick Sorgeloos e Peter Goethals. "Aquaculture Production and Its Environmental Sustainability in Thailand: Challenges and Potential Solutions". Sustainability 12, n. 5 (5 marzo 2020): 2010. http://dx.doi.org/10.3390/su12052010.
Abstract (sommario):
Though aquaculture plays an important role in providing foods and healthy diets, there are concerns regarding the environmental sustainability of prevailing practices. This study examines the trends and changes in fisheries originating from aquaculture production in Thailand and provides insights into such production’s environmental impacts and sustainability. Together with an extensive literature review, we investigated a time series of Thai aquaculture production data from 1995 to 2015. Overall, Thai aquaculture production has significantly increased during the last few decades and significantly contributed to socio-economic development. Estimates of total aquaculture production in Thailand have gradually grown from around 0.6 to 0.9 million tons over the last twenty years. Farmed shrimp is the main animal aquatic product, accounting for an estimated 40% of total yields of aquaculture production, closely followed by fish (38%) and mollusk (22%). Estimates over the past decades indicate that around 199470 ha of land is used for aquaculture farming. Out of the total area, 61% is used for freshwater farms, and 39% is used for coastal farms. However, this industry has contributed to environmental degradation, such as habitat destruction, water pollution, and ecological effects. Effective management strategies are urgently needed to minimize the environmental impacts of aquaculture and to ensure it maximally contributes to planetary health. Innovative and practical solutions that rely on diverse technology inputs and smart market-based management approaches that are designed for environmentally friendly aquaculture farming can be the basis for viable long-term solutions for the future.
40
Wang, Kun, Nan Li, Lun Song, Jinhao Wu e Hengzhi Jiang. "Application of a VOF Multiphase Flow Model for Issues Concerning Floating Raft Aquaculture". Water 15, n. 19 (30 settembre 2023): 3450. http://dx.doi.org/10.3390/w15193450.
Abstract (sommario):
Floating raft aquaculture has gradually become a mainstream aquaculture model in the waters of Changhai County, Dalian. To quantitatively describe the impact of floating raft aquaculture facilities on the hydrodynamic environment of nearby sea areas, in this study, we took a single floating raft aquaculture structure as the research object and built a numerical prediction model for water flows passing through the floating raft aquaculture structure using a six-degree-of-freedom VOF (volume of fluid) multiphase flow simulation method based on an overset moving mesh system. Then, we verified the numerical model by utilizing oblique hydraulic jumps and water flows passing through a submerged bar. As shown by the findings, the simulated values are in good agreement with the theoretical solutions and measured values, indicating that the model features high precision and great stability. The impact of the raft area on the hydrodynamic force was introduced into the source term of an equation for consideration. In order to further determine the hindering effect of the raft body on the water body, transport equations and the tracer method were used to simulate the impact of floating raft aquaculture facilities on the water exchange performance of nearby sea areas. This study shows that the VOF multiphase flow model can be easily and accurately applied to studies on floating raft aquaculture, which can greatly reduce the limitations of experiments that utilize pure hydraulic models, wherein the impacts of floating raft aquaculture facilities on hydrodynamic force are generally considered simply based on observations, water roughness or the secondary drag force coefficient, thereby effectively improving the scientific understanding of the physical mechanism involved in floating raft aquaculture.
41
Macusi, Edison D., Darshel Ester P. Estor, Elaine Q. Borazon, Misael B. Clapano e Mudjekeewis D. Santos. "Environmental and Socioeconomic Impacts of Shrimp Farming in the Philippines: A Critical Analysis Using PRISMA". Sustainability 14, n. 5 (3 marzo 2022): 2977. http://dx.doi.org/10.3390/su14052977.
Abstract (sommario):
Shrimp aquaculture is under pressure to increase its production to meet the growing demand for food from a growing population. In the Philippines, aquaculture has experienced the shift from milkfish to prawn, with its attractive marketable price. This intensification has led to negative and positive impacts, which have raised a range of environmental and socioeconomic problems. This paper reviews the environmental and socioeconomic challenges that the shrimp aquaculture industry faces using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method. We examine the gaps and the changes that are required to revitalize the industry. We examine and assess the impacts of shrimp culture on the environment, e.g., shrimp farm management, marine pollution, disease outbreaks, and the social, economic, and climate change impacts. The presence of viral diseases, such as White Spot Syndrome Virus (WSSV), Monodon Baculovirus (MBV), Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV), Hepatopancreatic Parvovirus (HPV), and Yellow Head Virus (YHV), have caused approximate losses in the industry of 40,080 mt in 1997, and 51,000 mt in 2014. Recommended strategies and policy changes are considered for the improvement of shrimp aquaculture, including disease management, the adoption of good aquaculture practices, proper environmental monitoring, sustainable practices at the farm level, and priorities for cooperation among the concerned government agencies and local governments, as well as the involvement of state universities and colleges, for better management practices.
42
Nagaraju, T. Vamsi, Sunil B. Malegole, Babloo Chaudhary e Gobinath Ravindran. "Assessment of Environmental Impact of Aquaculture Ponds in the Western Delta Region of Andhra Pradesh". Sustainability 14, n. 20 (12 ottobre 2022): 13035. http://dx.doi.org/10.3390/su142013035.
Abstract (sommario):
Aquaculture is persistent and well-established in the delta region of Andhra Pradesh. In recent years, the expansion of aquaculture has conferred positive economic growth in the newly formed state. However, the enormous development of aqua ponds increases the effluents from aquaculture which contain various chemical compounds that can cause negative impacts when released into the environment. This paper presents the effect of unengineered aquaculture on the environment in the delta region of Andhra Pradesh. The expansion rate of aquaculture practice in the delta region has been carried out using remote sensing and a geospatial information system. An experimental investigation was carried out on soil and water samples collected from the aquaculture ponds to evaluate the water quality parameters and soil characterization. Analysis of the geotechnical properties and microstructure was carried out to determine the interaction between the soil and the aquaculture contaminants. Based on the geospatial data and field survey, the aquaculture practice in the delta region of Andhra Pradesh was intensive and extended towards the northeast from the southwest. Between 2016 and 2020, aquaculture practice significantly increased by 6.08%. Moreover, the water quality parameters and pond bottom soil showed a higher concentration of ammonia and nitrates. Further, aquaculture leachate may interact with the subsoil and have a negative impact on soil mineralogy and hydraulic conductivity. The extensive experimental data and field surveys reveal that adequate guidelines are needed to control the pollution load on the ecosystem.
43
Mat Alipiah, Roseliza, Fathilah Ismail, Siti Aisyah Saat e Ahmad Puad Mat Som. "Modelling the Impacts of Aquaculture in Wetland Ecosystems for Sustainable Aquaculture Management: An Integrated Ecosystem Approach". International Journal of Engineering & Technology 7, n. 4.34 (13 dicembre 2018): 197. http://dx.doi.org/10.14419/ijet.v7i4.34.23887.
Abstract (sommario):
This research integrates information from both environmental and social sciences to inform effective management of the wetlands. A three-stage research framework was developed for modelling the drivers and pressures imposed on the wetlands and their impacts to the ecosystem and the local communities. Firstly, a Bayesian Belief Network (BBN) was used to predict the probability of anthropogenic activities affecting the delivery of different key wetland ecosystem services under different management scenarios. Secondly, Choice Experiment (CE) was used to quantify the relative preferences which key wetland stakeholder group (aquaculturists) held for delivery of different levels of these key ecosystem services. Thirdly, a Multi-Criteria Decision Analysis (MCDA) was applied to produce an ordinal ranking of the alternative management scenarios accounting for their impacts upon ecosystem service delivery as perceived through the preferences of the aquaculturists. This integrated ecosystem management approach was applied to a wetland ecosystem in Setiu, Terengganu, Malaysia which currently supports a significant level of aquaculture activities. This research has produced clear guidelines to inform policy makers considering alternative wetland management scenarios: Intensive Aquaculture, Conservation or Ecotourism, in addition to the Status Quo. The findings of this research are as follows. The BBN revealed that current aquaculture activity is likely to have significant impacts on water column nutrient enrichment, but trivial impacts on caged fish biomass, especially under the Intensive Aquaculture scenario. Secondly, the best fitting CE models identified several stakeholder sub-groups for aquaculturists, each with distinct sets of preferences for the delivery of key ecosystem services. Thirdly the MCDA identified Conservation as the most desirable scenario overall based on ordinal ranking in the eyes of most of the stakeholder sub-groups. Ecotourism and Status Quo scenarios were the next most preferred and Intensive Aquaculture was the least desirable scenario. The methodologies developed through this research provide an opportunity for improving planning and decision making processes that aim to deliver sustainable management of wetland ecosystems in Malaysia.
44
Paterson, Michael J., Cheryl L. Podemski, Wilhelmina J. Findlay, David L. Findlay e Alex G. Salki. "The response of zooplankton in a whole-lake experiment on the effects of a cage aquaculture operation for rainbow trout (Oncorhynchus mykiss)". Canadian Journal of Fisheries and Aquatic Sciences 67, n. 11 (novembre 2010): 1852–61. http://dx.doi.org/10.1139/f10-106.
Abstract (sommario):
There is hope that increased development of aquaculture will help meet future global needs for protein. The growth of the freshwater aquaculture industry in Canada, however, has been hampered by insufficient information on environmental impacts. We examined the effects of an experimental cage aquaculture operation for rainbow trout ( Oncorhynchus mykiss ) on planktonic Crustacea and rotifers using 6 years of precage and 7 years of postcage data. Following the initiation of aquaculture, total crustacean and rotifer biomass, egg production, and depth distributions did not change significantly when compared with data from three nearby unimpacted lakes. We found statistically detectable increases in densities of Bosmina cf. longirostris and Diacyclops thomasi and an overall change in crustacean zooplankton community structure using correspondence analysis. The response of zooplankton was less than we expected because comparatively large changes were observed in phytoplankton biomass, hypolimnetic O2, and densities of invertebrate ( Mysis diluviana ) and fish predators. Our study emphasizes the need to monitor multiple variables when assessing the ecosystem impacts of potential stressors such as aquaculture.
45
Yiğit, Ümüt. "Impacts of Brent Crude Oil Price Fluctuations on Global Aquaculture Production During World Economic Crises". Marine Science and Technology Bulletin 13, n. 1 (31 marzo 2024): 102–10. http://dx.doi.org/10.33714/masteb.1441264.
Abstract (sommario):
This study evaluates the linkage between brent crude oil prices and volatility spillover on the global aquaculture volume -and values during world economic crises. Besides the main variable costs comprising feed expenses with over the half of total costs in aquaculture facilities, the energy expenditures are among the important operational costs that influence farm profits through feed costs overall, but also with direct effects in recirculating systems as electricity use. Findings in this study evidenced that global aquaculture volume and value is closely related to global brent crude oil price variations during the periods of crises, as a result of increase in production costs. The correlations between brent crude oil prices and percent changes in volume -or values of farmed fish covering the crises periods between 2008 and 2021 were highest as 0.798 (R=0.798134676) and 0.716 (R=0.715832960), respectively, which are close to zero “0”, showing strong correlations between the investigated structures. However, no correlation was found between the investigated structures during the pre-crisis, post-crisis or inter-crisis periods. Over the last ten years, there were three periods when brent oil prices dropped remarkably, with interrelated effects on world aquaculture production volume or values with severe price dip following the brent oil trends. Hence, the results from this study reveal that any severe change in the energy sector will in turn hit the aquaculture industry with significant influences on both production volume -and values. Therefore, information regarding the interrelation of brent crude oil price variations and global aquaculture production provided in this study, may support building management strategies for sustainable fish farming business with foresights to world economic crises.
46
Goto, Garrett M., Emily Corwin, Alexander Farthing, Anisa Rilla Lubis e Dane H. Klinger. "A nature-based solutions approach to managing shrimp aquaculture effluent". PLOS Sustainability and Transformation 2, n. 8 (30 agosto 2023): e0000076. http://dx.doi.org/10.1371/journal.pstr.0000076.
Abstract (sommario):
While coastal habitat conversion was a primary environmental concern in Asia for the mostly extensive shrimp aquaculture sector in previous decades, the transition towards intensive production is creating new environmental risks, primarily water quality impacts from nutrient-rich effluent. There is a need to compare the performance of conventional and Nature-based Solution (NbS) effluent treatment options given the increasing nutrient loads from more intensive aquaculture and historic loss of ecosystem services from mangrove deforestation. This study evaluates the potential for common and emerging effluent treatment systems to address total nitrogen and total phosphorus effluent from shrimp farms across a spectrum of production intensities. Nutrient waste loading for four stocking density scenarios (7PLm-2, 20PLm-2, 75PLm-2, and 120PLm-2) are estimated to compare the treatment efficiency, economic feasibility, spatial requirements, and ecosystem service provision of conventional and NbS effluent treatment systems. We use secondary data to assess effluent treatment systems applicable for shrimp aquaculture in Asia. Findings provide the conceptual framework for comparing the characteristics and tradeoffs of aquaculture effluent treatment systems. Constructed mangrove wetlands are an NbS approach that can meet the intensification needs of aquaculture producers and reduce negative impacts from aquaculture effluent at competitive costs, while also providing ecosystem service co-benefits.
47
Romanelli, Michele, e Otello Giovanardi. "Commentary on Italy's international seafood trade and its impacts". Economia agro-alimentare, n. 3 (febbraio 2023): 1–24. http://dx.doi.org/10.3280/ecag2022oa14835.
Abstract (sommario):
Being within a geographical area, EU-27, which imports a large proportion of the fish products consumed annually from abroad, Italy finds itself in a particularly critical situation; domestic production from fishing and aquaculture on the whole accounts for only 20% of consumption and even less in the case of crustaceans and cephalopods. Despite its strong dependence on foreign countries, per capita consumption is quite high, at 31 kg/y in recent times; furthermore, among the imports from abroad there is a large number of species (or their families) mostly obtained through fishing. A wiser exploitation of national fishing resources, a greater development of domestic aquaculture and consumption patterns relying less on wild fish and shellfish are desirable.
48
SHINN, A. P., J. PRATOOMYOT, J. E. BRON, G. PALADINI, E. E. BROOKER e A. J. BROOKER. "Economic costs of protistan and metazoan parasites to global mariculture". Parasitology 142, n. 1 (2 dicembre 2014): 196–270. http://dx.doi.org/10.1017/s0031182014001437.
Abstract (sommario):
SUMMARYParasites have a major impact on global finfish and shellfish aquaculture, having significant effects on farm production, sustainability and economic viability. Parasite infections and impacts can, according to pathogen and context, be considered to be either unpredictable/sporadic or predictable/regular. Although both types of infection may result in the loss of stock and incur costs associated with the control and management of infection, predictable infections can also lead to costs associated with prophylaxis and related activities. The estimation of the economic cost of a parasite event is frequently complicated by the complex interplay of numerous factors associated with a specific incident, which may range from direct production losses to downstream socio-economic impacts on livelihoods and satellite industries associated with the primary producer. In this study, we examine the world's major marine and brackish water aquaculture production industries and provide estimates of the potential economic costs attributable to a range of key parasite pathogens using 498 specific events for the purposes of illustration and estimation of costs. This study provides a baseline resource for risk assessment and the development of more robust biosecurity practices, which can in turn help mitigate against and/or minimise the potential impacts of parasite-mediated disease in aquaculture.
49
Stentiford, G. D., E. J. Peeler, C. R. Tyler, L. K. Bickley, C. C. Holt, D. Bass, A. D. Turner et al. "A seafood risk tool for assessing and mitigating chemical and pathogen hazards in the aquaculture supply chain". Nature Food 3, n. 2 (febbraio 2022): 169–78. http://dx.doi.org/10.1038/s43016-022-00465-3.
Abstract (sommario):
AbstractIntricate links between aquatic animals and their environment expose them to chemical and pathogenic hazards, which can disrupt seafood supply. Here we outline a risk schema for assessing potential impacts of chemical and microbial hazards on discrete subsectors of aquaculture—and control measures that may protect supply. As national governments develop strategies to achieve volumetric expansion in seafood production from aquaculture to meet increasing demand, we propose an urgent need for simultaneous focus on controlling those hazards that limit its production, harvesting, processing, trade and safe consumption. Policies aligning national and international water quality control measures for minimizing interaction with, and impact of, hazards on seafood supply will be critical as consumers increasingly rely on the aquaculture sector to supply safe, nutritious and healthy diets.
50
Duball, Chelsea E., Jose A. Amador, Lauren E. Salisbury e Mark H. Stolt. "Impacts of Oyster Aquaculture on Subaqueous Soils and Infauna". Journal of Environmental Quality 48, n. 6 (novembre 2019): 1890–98. http://dx.doi.org/10.2134/jeq2019.03.0099.