Show simple item record

dc.contributor.authorValappil, Gayathri
dc.date.accessioned2021-05-05 14:57:57 (GMT)
dc.date.available2021-05-05 14:57:57 (GMT)
dc.date.issued2021-05-05
dc.date.submitted2021-05-03
dc.identifier.urihttp://hdl.handle.net/10012/16951
dc.description.abstractAgricultural production will be challenged in the near future to keep up with the rising nutritional demands of a growing global population. Additionally, climate change, through increased frequency of extreme weather events and droughts, will further push food production to its limits. Controlled-environment food production systems (CEFPS) are suggested as viable options to supplement existing agriculture by allowing food production expansion without requiring large amounts of land and by offering protection from changing weather patterns and other undesirable external conditions. Aquaponics is a form of CEFPS that combines recirculating aquaculture with hydroponics to produce both fish and vegetables. However, the environmental and economic performances of these systems in Canada and other cold climates have yet to be explored in depth. The overarching goal was to evaluate the potential for aquaponics to be a responsible and sustainable solution to maintaining Canadian food security. Specifically, this thesis aimed to identify environmental and economic barriers faced by small-scale Canadian aquaponics systems and provide options for reducing barriers and environmental impacts through the application of life cycle assessment (LCA) and life cycle cost (LCC) analysis. The major results of this study indicate that aquaponics in its current form is an energy-intensive form of agriculture and is more environmentally impactful than conventional forms of fish and vegetable production with a global warming potential (GWP) of 68 kg CO2eq/kg live fish and 50 kg CO2eq/kg leafy greens. Alternative scenarios, including energy efficiency improvements, renewable energy sources, and insect-based fish feed, were considered in order to address the environmental and economic hotspots identified. The following specific conclusions can be made: (1) energy consumption for artificial lighting and heating made necessary by cold climates is the biggest contributor to environmental impacts and costs; (2) an alternative scenario with off-site wind energy, LED lighting, and insulation reduces life cycle costs by 5% and GWP by 97%; and (3) alternative scenarios with insect-feed and on-site renewable energy can reduce specific environmental impacts but are more costly. It is recommended to pay particular attention to building design aspects, such as access to natural lighting and energy efficient HVAC systems, and climate-specific choices, such as cold-resistant crops and fish, in order to reduce the inherent energy intensity of operation. Overall, this work will help researchers and businesses improve performance of aquaponics systems, while serving as a foundation for the sustainability assessment of cold-climate aquaponics.en
dc.language.isoenen
dc.publisherUniversity of Waterlooen
dc.subjectaquaponicsen
dc.subjectindoor agricultureen
dc.subjectcold climate agricultureen
dc.subjectCanadaen
dc.subjectlife cycle assessmenten
dc.subjectlife cycle costen
dc.subjectenergy efficiencyen
dc.titleEnvironmental and Economic Implications of Small-Scale Canadian Aquaponics: A Life Cycle Studyen
dc.typeMaster Thesisen
dc.pendingfalse
uws-etd.degree.departmentSchool of Environment, Enterprise and Developmenten
uws-etd.degree.disciplineSustainability Managementen
uws-etd.degree.grantorUniversity of Waterlooen
uws-etd.degreeMaster of Environmental Studiesen
uws-etd.embargo.terms0en
uws.contributor.advisorDias, Goretty M.
uws.contributor.advisorMoresoli, Christine
uws.contributor.affiliation1Faculty of Environmenten
uws.published.cityWaterlooen
uws.published.countryCanadaen
uws.published.provinceOntarioen
uws.typeOfResourceTexten
uws.peerReviewStatusUnrevieweden
uws.scholarLevelGraduateen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record


UWSpace

University of Waterloo Library
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
519 888 4883

All items in UWSpace are protected by copyright, with all rights reserved.

DSpace software

Service outages