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Dissertations / Theses on the topic 'Aquaculture impacts'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Giles, Hilke. "Dispersal and remineralisation of biodeposits : ecosystem impacts of mussel aquaculture/." The University of Waikato, 2006. http://hdl.handle.net/10289/2548.

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Suspension-feeding bivalves produce biodeposits (faeces and pseudofaeces) that have much higher sinking velocities than their constituent particles. Consequently they cause sedimentation of material that might otherwise not be deposited. The benthic remineralisation of biodeposits increases sediment oxygen demand and nutrient regeneration, thus enhancing the benthic-pelagic coupling of nearshore ecosystems. In New Zealand the mussel Perna canaliculus has a high natural abundance and is also intensively cultured. This thesis examines the dispersal and remineralisation characteristics of mussel

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2

Tew, Kwee Siong. "The impacts of algal control in catfish and percid aquaculture ponds." Columbus, Ohio : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1062103252.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xvii, 114 p.; also includes graphics. Includes abstract and vita. Advisor: David A. Culver, Dept. of Evolution, Ecology, and Organismal Biology. Includes bibliographical references (p. 103-114).

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3

Quinlan, Roberto. "Fossil chironomids as indicators of water quality impacts from aquaculture activities." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ56097.pdf.

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4

Clerk, Saloni. "Fossil chironomids as indicators of water quality impacts from aquaculture activities." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2002. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ65611.pdf.

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5

Haque, Mohammad Mahfujul. "Decentralised fish seed networks in Northwest Bangladesh : impacts on rural livelihoods." Thesis, University of Stirling, 2007. http://hdl.handle.net/1893/301.

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Ricefield based fish seed production (RBFSP) in irrigated spring (boro) ricefields after initial introductions by external promoters has spread among farmers in parts of Northwest Bangladesh. This approach to producing juvenile fish, rather than by specialised geographically clustered hatchery and nursery enterprises, has been recognised as a strategy for decentralised production that makes large high quality seed available locally and supports food fish production. RBFSP has been promoted by the international NGO CARE as part of a process to improve rice-based livelihoods of farming household

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6

Liu, Yajie. "An analysis of the management and economics of salmon aquaculture." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/323.

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Salmon aquaculture can be a potential solution to bridge the gap between declining capture fisheries and increasing seafood demand. However, the environmental impacts it creates have generated criticism. The overall objectives of this dissertation are to examine the economic consequences of environmental issues associated with salmon aquaculture, and to explore policy implications and recommendations for reducing environmental impacts. These objectives are addressed in five main analyses. The growth of salmon aquaculture is analyzed based on farmed salmon production in the four leadin

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7

Fu, Jing. "Environmental Impacts of Aquaculture Ponds on Coastal Wetlands in the Yellow River Estuary." Kyoto University, 2017. http://hdl.handle.net/2433/225949.

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8

Faruque, Golam. "An exploration of impacts of aquaculture production and marketing on rural livelihoods in three regions in Bangladesh." Thesis, University of Stirling, 2007. http://hdl.handle.net/1893/253.

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Increased domestic and international demand for aquatic foods have greatly enhanced aquaculture practices and production in Bangladesh, which is reflected in the national economy. However, the impacts of a fast growing aquaculture sector through the involvement of stakeholders, poorer sections throughout the value chain and broader rural livelihoods are largely underdeveloped and have frequently been ignored. The present study explores the impacts of dynamic aquaculture sector on stakeholders at production level and supply chain and test the hypothesis that aquaculture is enhancing rural livel

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9

Chamberlain, Jon. "Modelling the environmental impacts of suspended mussel (Mytilus edulis L.) farming." Thesis, Edinburgh Napier University, 2002. http://researchrepository.napier.ac.uk/Output/5595.

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The potential impacts of marine aquaculture operations on the environment are reviewed. The reported effects of suspended mussel farms on the benthic environment are examined and the potential impacts discussed. A framework to assess the impacts of suspended mussel farms is presented. The use of simulation models to predict the impact of fish farm wastes on the benthic environment is discussed and the mathematical theory supporting such models is presented. The applicability of these models to mussel farming is discussed and the data required to undertake such modelling identified. The effect

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10

Koranteng, Kwame Abu. "The impacts of environmental forcing on the dynamics of demersal fishery resources of Ghana." Thesis, University of Warwick, 1998. http://wrap.warwick.ac.uk/34664/.

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The dynamics of demersal fish species assemblages and stocks on the continental shelf of Ghana, West Africa were investigated using data from trawl surveys conducted between 1963 and 1990, and in relation to marine environmental and nearshore forcing factors. Time series analysis was used to examine the dynamics of the marine environment. Classification and ordination methods were used to identify fish assemblages and to identify factors that determine assemblage formation and dynamics. The response of the identified assemblages to changes in the Ghanaian shelf ecosystem were assessed. Between

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11

Voller, Samuel W. "The impacts of wheat gluten products and short-chain fructooligosaccharides on the health and production of juvenile rainbow trout (Oncorhynchus mykiss)." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/9826.

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Through the implementation of in vivo feeding trials, the efficacy of three wheat gluten (WG) products, vital (Amytex®), hydrolysed (Merripro®) and soluble hydrolysed (Solpro®) wheat gluten as replacement of soy protein concentrate, and scFOS prebiotic (Profeed®) supplementation were analysed to assess their impacts on intestinal health and production of juvenile rainbow trout. Microbial community analysis in experiment one revealed a degree of diet based modulation with 7.5% and 15% inclusions of wheat gluten (WG) products. Bacterial species diversity was significantly reduced with 15% hydrol

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12

Selong, Jason H. "Impacts of aquaculture effluent on water quality and biotic communities in Virginia headwater streams." Thesis, This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-08252008-162223/.

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13

Schmitt, Dorothy Reade. "Land Use Impacts of Plastic Mulch Tomato Production and Evaluation of Sorbent Control on Shellfish Hatchery Operations." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/43584.

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During the 1990s, shellfish hatcheries operating on the Eastern Shore of Virginia noticed an increase in mortalities of their clam larvae; it was suspected that this was a result of the deteriorating quality of the estuarine water used by aquaculture hatcheries. Many hatcheries obtain their facility process water directly from nearby streams and estuaries. During the same time period, there was also an increase in the use of plastic mulch on some of the vegetable fields on the Eastern Shore. The increased runoff commonly associated with these plastic-covered fields often contains copper-b

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14

Macabuac, Maria Cecilia Fiel. "After the Aquaculture Bust: Impacts of the Globalized Food Chain on Poor Philippine Fishing Households." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/28380.

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ï»¿The Philippines is a food extractive enclave in the bust stage of export-oriented aquaculture, and this globalization agenda has had several negative impacts. Aquaculture has not expanded fish and marine foods but threatens national food security by integrating Philippine aquatic resources into the globalized food chain. Following structural adjustment policies imposed beginning in the 1980s, the Philippines shipped massive levels of animal protein to world markets, but this country has grown less food self-sufficient. During the decades that shrimp aquaculture has boomed and busted in the

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15

Amisah, Stephen. "Impacts of anthropogenic activities on the fisheries of the Don, Rother and Dearne catchments." Thesis, University of Hull, 1998. http://hydra.hull.ac.uk/resources/hull:3797.

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Human uses and abuses of rivers have grown and diversified over the last few centuries with increasing urban development. With increasing population growth, there has been increasing demand for the use of rivers to satisfy a diverse range of human needs including solid waste disposal and the discharge of industrial, sewage and mining effluents. Rivers have been abstracted for agricultural and potable water supply and river channels have been modified for navigation, flood defences and hydro-electric power generation. These modifications to the river system disrupt the fabric of the aquatic eco

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16

Mavraganis, Theodoros. "An investigation of environmental impacts on sediments by marine cage fish farms using long term metadata analysis." Thesis, University of Stirling, 2012. http://hdl.handle.net/1893/9797.

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Many studies have investigated the impacts of marine cage fish farming on seabed sediments. Most of these studies have focused on organic loading or toxic chemicals used for the treatment of disease, normally for a single or a small number of sites over short time periods. Only very rarely has there been the opportunity to use large data sets consisting of a large number of fish farm sites over a long time scale. In Scotland, localised nutrient impacts have been well documented for marine cage salmon farms, but mixed effects of nutrient and chemicals such as SLICE (the active ingredient of whi

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17

Lubat, Vincent. "Approches biologiques et moléculaires dans l'étude des Myxosporidies, du PKX et des Marteilia : impacts en aquaculture." Montpellier 2, 1990. http://www.theses.fr/1990MON20282.

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L'etude de la parasitofaune des poissons marins mediterraneens des cotes francaises du languedoc-roussillon et de la baie de kotor (adriatique) en yougoslavie, a revele la presence de 45 especes de myxosporidies, dont huit nouvelles pour la science. Plusieurs aspects de la biologie de ces parasites sont abordes. L'impact de ces parasites en aquaculture a ete etudie a travers le modele thelohanellus nikolskii responsable d'epizooties dans les elevages de carpes d'europe centrale et d'asie. La pathologie liee a cette espece, ainsi que les stades initiaux de la sporogenese ont ete precises. Les a

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18

Prescott, Steven George. "Exploring the sustainability of open-water marine, integrated multi-trophic aquaculture, using life-cycle assessment." Thesis, University of Stirling, 2017. http://hdl.handle.net/1893/28269.

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Among efforts to develop sustainable approaches towards the intensive rearing of finfish within open marine waters, is the development of integrated aquaculture techniques. Integrated Multi-Trophic Aquaculture (IMTA), has been promoted as a way to reduce unwanted environmental impacts associated with the intensive production of marine finfish within net-pens. The principle aim of this concept, is the bioremediation of nutrient discharges from fish aquaculture. This is to be achieved by integrating fish cultivation with the growing of species from lower trophic levels, which use the nutrient di

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19

Mialhe, François. "Le développement de l'aquaculture saumâtre dans l'Aire Pacifique : évolution des paysages, dynamiques socio-économiques et impacts environnementaux dans deux territoires au Pérou et aux Philippines." Paris 7, 2010. http://www.theses.fr/2010PA070077.

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Basé sur deux études de cas aux Philippines (Pampanga) et au Pérou (Tumbes), cette thèse avait pour objectif d'analyser le développement de l'aquaculture à travers l'étude des causes initiales de ce développement, de son développement spatial et des impacts socio-économiques découlant de l'activité. La méthodologie a associé des traitements d'images satellites au travail de terrain. L'élaboration de plusieurs méthodes de détection des étangs ont permis une cartographie fine de ces infrastructures. La méthode s'est en particulier appuyée sur l'articulation d'un traitement multispectral et d'un

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20

Bateman, Samantha. "Sources and impacts of inorganic and organic fine sediment in salmonid spawning gravels in chalk rivers." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/349382/.

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Poor salmonid spawning habitat due to excessive fine sediment inputs has been identified as a major factor limiting survival in chalk rivers. A lack of knowledge about the complex processes and factors affecting survival was the driver for this study and gaps in the research were identified concerning the sources of fine sediment and the impact organic material had on salmonid survival in chalk streams. Consequently the main objectives of this study were to characterise spawning habitat quality of a chalk catchment, assess the sources of sediments accumulating within artificial redds, describe

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21

Bromilow, Amanda Marie. "Juvenile Blue Crab Survival in Nursery Habitats: Predator Identification and Predation Impacts in Chesapeake Bay." W&M ScholarWorks, 2017. https://scholarworks.wm.edu/etd/1516639467.

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Predator populations can have significant impacts on prey recruitment success and prey population dynamics through consumption. Young, inexperienced prey are often most vulnerable to predation due to their small size and limited evasion capabilities. to reduce the risk of predation, new recruits and young juveniles typically settle in structured nursery habitats, such as seagrass beds, which promote higher survival by acting as refuges from predators. Thus, successful recruitment to the adult portion of the population is often dependent on the availability of suitable nursery habitat. In this

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22

Jara, Vergara Bibiana Andrea. "Fate and impact of antibiotics and pesticides used in marine aquaculture : an emergent threat to the coastal ocean." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS422.

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Le Chili, deuxième pays d'élevage de saumons au monde, est celui qui utilise le plus d'antibiotiques et de pesticides, qui peuvent être nocifs pour l'environnement et l'homme. Ces composés ont tendance à être séquestrés par les particules en suspension, transportés par les courants et finalement déposés dans les sédiments, où ils sont finalement consommés par la communauté benthique. Des changements dans les communautés bactériennes, l'émergence de gènes de résistance et les impacts écologiques ont été décrits pour les antibiotiques et les pesticides, bien que la plupart se concentrent sur l'i

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23

Strickler, Matthew J. "Assessing the Impacts of Land use Change on Hard Clam Aquaculture in Old Plantation Creek, Northampton County, Virginia." W&M ScholarWorks, 2007. http://www.vims.edu/library/Theses/Strickler07.pdf.

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24

Baldissera, Giulia. "1H NMR-based metabolomics investigation on the impacts of feeding in aquaculture of Gilthead sea bream (Sparus aurata)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23674/.

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In questo lavoro di tesi sono stati analizzati campioni di orate (Sparus aurata) da acquacoltura allevate con differenti diete, commerciali o innovative, con lo scopo di verificare se le diverse formulazioni dei mangimi hanno un effetto sul profilo molecolare dei pesci. A tal proposito, è stata utilizzata la spettroscopia di Risonanza Magnetica Nucleare (1H NMR) accoppiata ad un approccio metabolomico poiché, rispetto ad altre tecniche, consente la determinazione simultanea di un’ampia classe di metaboliti che caratterizzano il campione attraverso la generazione di spettri che contengono un am

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25

Pease, Sarah. "Alexandrium Monilatum in the Lower Chesapeake Bay: Sediment Cyst Distribution and Potential Health Impacts on Crassostrea Virginica." W&M ScholarWorks, 2016. https://scholarworks.wm.edu/etd/1477068141.

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The toxin-producing harmful algal bloom (HAB) species Alexandrium monilatum has long been associated with finfish and shellfish mortalities in the Gulf of Mexico. In the summer of 2007, A. monilatum re-emerged as a bloom-forming species in the Chesapeake Bay. Over the last decade, late summer blooms of A. monilatum have been expanding in range in the lower Chesapeake Bay and have reached record-high densities, particularly in the lower York River. This dinoflagellate species overwinters in the sediments as a resting cyst, and upon excystment under suitable environmental conditions produces blo

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26

Murray, Francis J. "Potential for aquaculture in community-managed irrigation systems of the dry-zone, Sri Lanka : impacts on livelihoods of the poor." Thesis, University of Stirling, 2004. http://hdl.handle.net/1893/62.

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Rainfed areas in the Dry-Zone of Sri Lanka are characteristic of extensive marginal agro-ecosystems known as the semi-arid tropics (SAT) populated by poor farming communities. In the Dry-Zone and elsewhere, the traditional response to seasonal water scarcity was to construct rainfall-harvesting devices known as ‘tanks’; created by building earthen dykes across ephemeral streams in undulating terrain. Most are held in common ownership by adjacent communities, who use them for multiple functions including irrigation, bathing and fishing. Storage efficiency is enhanced by arranging tanks in casca

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27

Du, Plessis D. "Impacts of cage aquaculture on the farm dam ecosystem and its use as a multipurpose resource : implications for irrigation." Thesis, Stellenbosch : University of Stellenbosch, 2007. http://hdl.handle.net/10019.1/2206.

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Thesis (MScAgric (Conservation Ecology and Entomology)--University of Stellenbosch, 2007.<br>Small farm dams (< 20 ha) in the Western Cape Province provide adequate water conditions for intensive cage production of rainbow trout (Oncorhynchus mykiss). A major environmental concern of cage aquaculture, however, is the high inputs of nutrients via commercial diets and the subsequent eutrophication of the water source. Eutrophication can result in the degradation of the general water quality (increasing pH levels, oxygen depletion, increased hydrogen sulphide and free ammonia) and shifts in

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28

Silva, Orildo S?vio de Oliveira. "Avalia??o social de empreendimentos agroindustriais :um estudo na carcinicultura." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14992.

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Made available in DSpace on 2014-12-17T14:52:57Z (GMT). No. of bitstreams: 1 OrildoSOS.pdf: 487861 bytes, checksum: 000c581381b10a9543619587412d4f6e (MD5) Previous issue date: 2006-05-19<br>O objetivo desse trabalho foi investigar a contribui??o social da atividade econ?mica denominada de carcinicultura, para o munic?pio de Canguaretama no Rio Grande do Norte, a partir da vis?o dos moradores do citado munic?pio, sendo enfocados aspectos ambientais, aspectos de produ??o, consumo de energia, gera??o de empregos e renda, e investimentos na ?rea social, para a melhoria de vida da popula??o loca

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29

Becke, Cornelius [Verfasser], Jürgen [Akademischer Betreuer] Geist, Jürgen [Gutachter] Geist, Alexander [Gutachter] Brinker, and Michael [Gutachter] Pfaffl. "Physiological impacts of suspended solids in recirculating aquaculture / Cornelius Becke ; Gutachter: Jürgen Geist, Alexander Brinker, Michael Pfaffl ; Betreuer: Jürgen Geist." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/1214808476/34.

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30

Bui, Thi Lien Ha. "Impacts of traditional husbandry practices on exploitable levels of genetic diversity in cultured 'Tra' catfish (Pangasianodon hypophthalmus) in the Mekong Delta, Vietnam." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/46957/1/Thi_Lien_Ha_Bui_Thesis.pdf.

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Sutchi catfish (Pangasianodon hypophthalmus) – known more universally by the Vietnamese name ‘Tra’ is an economically important freshwater fish in the Mekong Delta in Vietnam that constitutes an important food resource. Artificial propagation technology for Tra catfish has only recently been developed along the main branches of the Mekong River where more than 60% of the local human population participate in fishing or aquaculture. Extensive support for catfish culture in general, and that of Tra (P. hypophthalmus) in particular, has been provided by the Vietnamese government to increase both

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31

Mamun, Abdullah-Al. "Shrimp-prawn farming in Bangladesh : impacts on livelihoods, food and nutritional security." Thesis, University of Stirling, 2016. http://hdl.handle.net/1893/25012.

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The overarching aim of this research was to improve understanding of the synergies and trade-offs between economic and domestic food security benefits associated export-oriented shrimp and prawn aquaculture in a fragile developing country environmental context. The research scope covers the entire ‘seafood system’ incorporating production, distribution, trading and consumption in the south-west coastal region under greater Khulna District, Bangladesh. The primary research objective was to understand causal factors in variation of seafood nutritional quality and health outcomes, exploring corre

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32

Malleret-King, Delphine. "A food security approach to marine protected area impacts on surrounding fishing communities : the case of Kisite Marine National Park in Kenya." Thesis, University of Warwick, 2000. http://wrap.warwick.ac.uk/2923/.

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Marine Protected Areas (MPAs) have been suggested as one of the solutions to coral reef fisheries management. It is thought that their effects on biomass, species diversity and habitat could improve surrounding fisheries yields through fish migration and increased recruitment. However, MPAs' benefits on surrounding fisheries are difficult to establish due to the lack of historical data. Furthermore, the lack of involvement of stakeholders have led to a number of failures. MPAs in the form of No Take Zones (NTZ), which aim to promote the sustainable use of fisheries resources, might contribute

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33

Abdou, Khaled. "Evaluation des impacts environnementaux du chalutage de fond et de l'aquaculture en Tunisie : approche comparative par les Analyses de Cycle Vie (ACV)." Electronic Thesis or Diss., Brest, 2017. http://www.theses.fr/2017BRES0141.

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L'aquaculture et la pêche impactent l'environnement, les ressources et le fonctionnement des écosystèmes. L’un des enjeux en écologie est de placer ces activités anthropiques dans un cadre de développement durable. Afin de quantifier et de limiter ces impacts, différentes méthodes d’évaluation environnementale ont vu le jour. L’Analyse de Cycle de Vie (ACV) est une méthode pertinente pour évaluer le bilan environnemental d'un produit en prenant en compte l’ensemble de ses étapes de vie, "du berceau à la tombe", depuis l’extraction des matières premières et leurs transformations pour l'élaborat

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Gallagher, Sarah Elizabeth. "Establishing a culinary market for lionfish species through a market-based organization to mitigate the environmental impacts of the invasive species." Thesis, College of Charleston, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1545140.

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<p> Environmental activists are questioning the management strategies of the invasive Indo-Pacific lionfish (a species complex of <i>Pterois volitans </i> and <i>P. miles</i>) in the western North Atlantic, due to the species' rapidly expanding invasion and steadily growing population. The invasive lionfish species ecological effects are of great concern, as impacts on marine and terrestrial ecosystems trigger population and biodiversity declines. Awareness and research supporting the need for better managerial techniques and response strategies are surfacing among academic groups, forcing cri

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Karim, Manjurul. "The livelihood impacts of fishponds integrated within farming systems in Mymensingh District, Bangladesh." Thesis, University of Stirling, 2006. http://hdl.handle.net/1893/86.

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Links between the pond and surrounding land for horticulture is a distinctive feature of farming households in Bangladesh. It was hypothesised that the role of fishponds in integrated aquaculture systems has potential towards improving livelihoods and poverty alleviation. Rural and peri-urban settlements in Mymensingh District, Bangladesh were selected for assessing the importance and role of pond-dike systems on the livelihoods of households of different socio-economic level. The study was carried out in view of the sustainable livelihood approaches of the Department for International Develop

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36

Gilbert, Michael Chaise. "Impacts of Habitat Fragmentation on the Cranial Morphology of a Threatened Desert Fish (Cyprinodon Pecosensis)." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1640.

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Drastic alterations to the North American Southwest’s hydrology have highly influenced resident fish communities. In New Mexico and Texas, the Pecos River has been severely altered as a result of water manipulation, isolating backwaters and various habitats that were once connected to the main river. Cyprinodon pecosensis (Pecos pupfish) has been highly impacted due to the effects of anthropogenic water manipulation, as well as species introductions. Cyprinodon pecosensis populations have become isolated and scattered, residing in sinkholes, remnant lakes, and static backwaters, thus creating

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Abdou, Khaled. "Evaluation des impacts environnementaux du chalutage de fond et de l'aquaculture en Tunisie : approche comparative par les Analyses de Cycle Vie (ACV)." Thesis, Brest, 2017. http://www.theses.fr/2017BRES0141/document.

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L'aquaculture et la pêche impactent l'environnement, les ressources et le fonctionnement des écosystèmes. L’un des enjeux en écologie est de placer ces activités anthropiques dans un cadre de développement durable. Afin de quantifier et de limiter ces impacts, différentes méthodes d’évaluation environnementale ont vu le jour. L’Analyse de Cycle de Vie (ACV) est une méthode pertinente pour évaluer le bilan environnemental d'un produit en prenant en compte l’ensemble de ses étapes de vie, "du berceau à la tombe", depuis l’extraction des matières premières et leurs transformations pour l'élaborat

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38

Kuschner, Michael A. "A Model of Carrying Capacity and Ecosystem Impacts in a Large-Scale, Bivalve-Dominated Agro-Ecosystem: Hard Clam Aquaculture in Cherrystone Inlet, VA." W&M ScholarWorks, 2015. https://scholarworks.wm.edu/etd/1539617960.

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With the recent growth of the hard clam aquaculture industry, sites of intensive aquaculture have emerged as large-scale agro-ecosystems where the success of aquaculture production is dynamically linked to ecosystem function. Large scale clam aquaculture operations are associated with a range of potential positive and negative feedbacks related to nutrient dynamics, water and sediment quality, proliferation of macroalgae, and carrying capacity. Quantitative modeling tools are needed to support system-level planning related to site selection, scale of operations, production capacity and ecosyst

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Mtetandaba, Aphiwe. "The use of operational harmful algal bloom monitoring systems in South Africa to assess long term changes to bloom occurrence & impacts for aquaculture." Master's thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33842.

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The south coast of South Africa is a very dynamic, productive, high energy environment and is considered to be a generally challenging setting for in-water aquaculture. One of the largest environmental threats to aquaculture are harmful algal blooms (HABs), a natural ecological phenomenon often accompanied by severe impacts on coastal resources and local economies. There is a wide variety of potentially harmful blooming species in the region, with impacts resulting from both toxicity and the negative effects associated with high biomass. While HABs are fairly well documented around the souther

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40

Patil, Pawan Ganapati. "Modelling and measuring the efficiency of the brackish water shrimp aquaculture sector and its socio-economic and environmental impacts on rural producers in Nellore District, India." Thesis, London School of Economics and Political Science (University of London), 1999. http://etheses.lse.ac.uk/2268/.

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The lack of economic analysis on export-led shrimp farming in India has become of major national importance as a result of the Indian Supreme Court's December 1996 decision to ban the shrimp farming sector. The ban was a direct result of concerns over the impact of shrimp farming-in terms of its degradation of the environment and marginalization of local people from coastal resources. In addition to questions raised with respect to the nature and extent of environmental and socio-economic externalities of this sector, recent parliamentary debate raised equally important questions regarding the

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Mialhe, François. "Le développement de l'aquaculture saumâtre dans l'Aire Pacifique Evolution des paysages, dynamiques socio-économiques et impacts environnementaux dans deux territoires au Pérou et aux Philippines." Phd thesis, Université Paris-Diderot - Paris VII, 2010. http://tel.archives-ouvertes.fr/tel-00557715.

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L'aquaculture connait un taux de croissance annuel moyen de sa production proche de 7 % depuis 50 ans. De nombreux pays, à des degrés variés, ont enregistré des augmentations de leurs productions aquacoles. Ce développement s'est accompagné d'une augmentation des surfaces terrestres et marines occupées par les différentes formes d'aquaculture : marine, saumâtre ou dulcicole. Parmi ces dernières, c'est l'aquaculture saumâtre en étangs qui a constitué notre objet d'étude, et plus particulièrement celle pratiquée dans l'espace intertropical. A partir de deux études de cas, aux Philippines (Pampan

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Silva, Janne Kleia da. "Agrohidronegócio da carcinicultura: reconfigurações Ambientais, sociais e tecnológicas no município de Jaguaruana-Ceará." Universidade Federal Rural do Semi-Árido, 2014. http://bdtd.ufersa.edu.br:80/tede/handle/tede/25.

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Made available in DSpace on 2016-08-11T14:41:30Z (GMT). No. of bitstreams: 1 JanneKS_DISSERT.pdf: 1447569 bytes, checksum: 3b9a105d54e04d077ba0f4caece98db6 (MD5) Previous issue date: 2014-12-01<br>The State of Ceará after the 1990s, is now inserted in front of the Agrohidronegócio expansion through construction of a developmental project characterized by a set of structural and administrative measures for modernizing character of this agricultural capital by way of large state incentives entered in some parts of the territory of Ceará, erupting in 2003 in the Vale do Jaguaribe shrimp farmin

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Tiu, Laura G. "Assessment and Future Direction of The Ohio State University Aquaculture Program." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276543251.

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Moraes, Karane Allison Silvestre de. "Indicadores da sustentabilidade de pisciculturas do município de Toledo, Paraná, Brasil." Universidade Estadual do Oeste do Parana, 2014. http://tede.unioeste.br:8080/tede/handle/tede/1948.

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Made available in DSpace on 2017-07-10T18:13:20Z (GMT). No. of bitstreams: 1 Karane A S de Moraes.pdf: 2673552 bytes, checksum: 9e0e357e3817606424cdcadc03fab744 (MD5) Previous issue date: 2014-05-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This study aimed to characterize and analyze the sustainability indicators for fish farms in the city of Toledo, Paraná, Brazil, during the period September 2013 to March 2014. The research was divided into four stages: consultation of bibliographic sources, checklist inventory, case study and data analysis. The checklist was basic

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McIntosh, Dennis. "Reducing the environmental impact of aquaculture." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/289234.

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Aquaculture has great potential to help supply the nutritional needs of a growing population. To date, however, the benefits that aquaculture can have, have largely been overshadowed by the environmental degradation some segments of the industry have caused. The following body of work describes my efforts to help reduce the environmental impacts of aquaculture. By integrating aquaculture production into traditional agriculture, the impact of farming on already limited water resources and the reliance on chemical fertilizers can be reduced. Recent expansion of the aquaculture industry in Arizon

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Aiub, Jose Americo da Silva. "Fitotratamento de efluente de aquacultura com Azolla filiculoides." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/11181.

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A aquacultura pode gerar considerável impacto ambiental pelo alto nível de N e P produzido. Este fato reflete a necessidade de mais estudos sobre a remoção daqueles nutrientes.O objetivo deste estudo foi avaliar o uso de Azolla filiculoides na remoção de N e P de efluentes com diferentes densidades de coberturas e períodos de tempo, com e sem sedimentação prévia. Ambos os trabalhos foram desenvolvidos no Setor de Aquacultura da UFRGS.A planta Azolla filiculoides foi distribuída em proporções de 0% (controle), 25%,50% e 75% da superfície das caixas plásticas. O período do experimento foi de 10,

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Martinez-Garcia, Elena. "Ecological Effects of Aquaculture on Polychaete Assemblages Associated to Soft Sediments." Doctoral thesis, Universidad de Alicante, 2017. http://hdl.handle.net/10045/74472.

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Stewart, A. R. J. "Aquaculture impact, disaggregation and settling velocity of salmon feed." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0015/MQ49450.pdf.

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Musclow, Sandy Lee. "Impact of salmon aquaculture on sediment chemistry and mercury loading." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84063.

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One of the main environmental impacts of salmon aquaculture activities in the Bay of Fundy is the alteration of sediment chemistry as a result of the large amount of organic waste that accumulates below fish pens. To investigate these impacts, vertical profiles of delta13C, delta 15N, Corg, Corg:Ntot, FeHC1 , MnHCl, Ptot, PHCl, SO4 2-, AVS, Hgtot, and Hgpyrite in sediment cores collected throughout the bay were acquired. These profiles were then used to identify tracers of aquaculture activities and their impact on the redox zonation of the sediment. In addition, representative samples

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Stump, Katherine Alice. "Impact of Oyster Aquaculture in Virginia on Waterfront Property Values." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/91893.

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Virginia is the east coast's largest producer of eastern oysters and produces more than any other state. As the industry grows to meet increasing demand, more conflicts have arisen with other resource users, especially waterfront property owners. Some landowners claim oysters impact recreational and aesthetic uses of their property, therefore lowering the value of the home. Using a hedonic property value model, this study examines the effect of oyster aquaculture on waterfront properties by using 2,245 property sales from 16 counties and independent cities and information on aquaculture activi

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