Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Polyculture"”.
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Life cycle environmental sustainability assessment of woody polyculture
The student, Diana Kapanzhi, accepted the attached license on 2016-07-20 at 22:34.
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The potential for Gracilaria polyculture at Jacobs Bay Sea Products Pty
This report investigates the potential for the culture of G. gracilis, an indigenous red alga, into the west coast mariculture farm Jacobs Bay Sea Products Pty. Various methods for cultivating Gracilaria as well as environmental parameters, which influence growth of Gracilaria, are disltussed …
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Effects of Local Plant Neighborhood on Plant Herbivory in Perennial Polyculture Cropping Systems
… prairie communities with perenniality and polyculture. Perennial cropping systems allow for complex planting arrangements (e.g. crop frequency, intercrops, and row spacings) that could confer specialist insect pest resistance via reduced host plant apparency, changes in herbivore …
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Conservation biological control in a multi-strata agroforestry system
Polyculture agroforestry is a new sustainable agriculture system modelled on the plant structural and species diversity of native oak savanna. Advocates of the system claim that it will advance conservation goals by providing ecosystem services like habitat provision and carbon sequestration, but …
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Species and functional diversity effects on productivity and nutrient uptake: implications for designing sustainable agricultural systems in the Midwest
… on the performance of monocultures and polycultures of four native perennial prairie species having different functional traits (e.g., forb, grass, nitrogen-fixer) relative to monocultures of corn soybean, brome, and switchgrass were conducted in terms of aboveground biomass production …
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Understanding the impacts of land-use change and management decisions within oil palm on insect assemblages in Peninsular Malaysia and Borneo
… crop choices after replanting (monoculture vs polyculture), on butterfly assemblages. I found that smallholders managed their plantations in widely different ways, resulting in differing habitat structure and complexity across plantations, but that broad management decisions (immature …
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Productivity, Carbon Sequestration, Nutrient Accumulation, And Species Interactions In Perennial Biomass Alley Cropping Systems
… Dewey cv. Rush), and an eleven species native polyculture. After four years of growth, we found that NM6 poplar alley cropping systems maximized biomass yields at Empire (13.5 Mg ha-1 yr-1) and Granada, MN (9.6 Mg ha-1 yr-1), irrespective of herbaceous crop type. NM6 poplar – intermediate …
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The social and management factors that contribute to the ecological sustainability of oil palm plantations
… decisions to replant oil palm as a mono versus polyculture crop, and how such systems differed in management inputs and environmental features. I found no significant differences in socio-demographics or attitudes between farmers deciding to replant with a monoculture or a polyculture, …
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Evaluation of life cycle assessment methodology for multiple agroecosystems
… Land use transition to multifunctional woody polyculture (MWP) agroecosystems has been proposed as a potential strategy for mitigating these harmful impacts while still yielding high value crops. Life Cycle Assessment (LCA) has the potential to meaningfully capture these impacts, enabling …
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Sea-based Integrated Multi-Trophic Aquaculture: Investigation of a fish, bivalve and macroalgal co-culture system.
… was explored as an amalgam of the processes of polyculture and biofiltration, with the primary objectives of improved aquaculture production efficiency and wastes remediation. The study established a coculture of Atlantic salmon (Salmo salar, L.), Pacific oyster (Crassostrea gigas, Thunberg) and …
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Competitive Effects Of Increased Plant Species Richness And Increased Endemic Versus Native Generalist Species Dominance On The Invasive Grass Microstegium Vimineum During Oak Woodland Restoration
… treatments or control: (1) a six species polyculture, (2) a monoculture of six individuals of a single species, or (3) a control simulating the soil disturbance of the plantings. I then monitored microstegium percent cover through the 2015 growing season and into the spring of the …
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Social Aesthetics: Affecting Change in Food Provisioning
… aims to express democratic values through polyculture. It invites every citizen to participate in acts of justice rather than submit to illusions of order and control. From site selection through design, spatial and temporal scale is critical. This thesis explores food's past to understand …
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Elucidating the ecophysiological complexities of maize and soybean intercrop systems to improve ecosystem services
… intercropping system to assess the potential for polyculture systems to improve water-use efficiency, 2) compare trait plasticity responses and light-use efficiencies under the solar corridor intercrop, solar corridor maize monoculture and the standard monoculture systems of the Midwest, 3) …
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Permaculture as farming practice and international grassroots network: a multidisciplinary study
… (2) distinctive approaches to perennial polyculture, water management, and agroecosystem configuration suggest promising avenues of inquiry; (3) discussions of practice consistently underplay the complexity, challenges, and risks that producers face in developing diversified and …
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The Determination of Emamectin Benzoate and its Fate in the Environment as a Result of Fish Farming
… This result is encouraging in view of proposed polyculture systems involving seaweeds.<br/>Studies conducted on a working Scottish salmon farm investigated the fate of EB and DES in target and non-target matrices. For three months post-treatment, EB was detected, by mass in descending order, in …
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The growth and productivity of ribes nigrum under various levels of shade and the implications for multifunctional woody polycultures
… systems for agricultural production focusing on polycultures of perennial crops, a major gap in research is found in the understory layers of these systems. The understory is a unique habitat with intense plant competition for nutrients and water, and most importantly, light. While much is known …
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Developing resilience through local food
<p>Using resilience from the perspective of the two-book series on the subject by Brian Walker and David Salt, the following is an illustration of how the conventional food system, in the way its production is disconnected from the local environment and the people it serves, creates instability and …
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Perennial pathways: Planning and establishment practices for edible agroforestry
… as the complexity and diversity of these polycultures increases, more knowledge and planning are required to be successful. To meet this need, we developed a practical, extension-style handbook to aid farmers and consultants in planning and establishing edible agroforestry projects. The …
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Frontiers in alley cropping: Transformative solutions for temperate agriculture
… for the scalable implementation of woody polycultures and tree crops for food and fodder. To evaluate the direct benefits of such systems, I then assess the potential of diversified, food-producing AC to mitigate unintended nitrogen losses in a side-by-side field experiment with row crop …