{"title":"Bekithemba Gumbo","description":null,"products":[{"product_id":"short-cutting-the-phosphorus-cycle-in-urban-ecosystems-book-bekithemba-gumbo-9780415384841","title":"Short-cutting the Phosphorus Cycle in Urban Ecosystems","description":"This dissertation presents a methodology of short-cutting the phosphorus cycle in urban ecosystems. In nature, the P-cycle is a circular, closed-loop system, but human activities use and dispose P in a linear, open-ended system leading to the customary environmental problems. Lake Chivero in Zimbabwe is used as a case study to illustrate the unsustainable practice of discharging valuable and finite phosphorous into drinking water resources. Short-cutting or closing the P-cycle in the urban environment is closely related to the closure of water cycles. Closing the P-cycle is dependent on the adoption of ecological sanitation and eco-city concepts. These concepts lead to solutions, which are source orientated (local and small scale), non-mixing, ecologically sound, closed-loop systems. Recycling of P in urban ecological agriculture (without synthetic fertilisers) is used in this dissertation to test the feasibility of these concepts. A phosphorus calculator has been developed, based on studies of monthly P-fluxes and stocks, in a high-density suburb of Harare in Zimbabwe, where agriculture is an established activity.","brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51113729949969,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51113730900241,"sku":"NIN9780415384841","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"GB \/ NEW \/ INGRAM","offer_id":52124829122833,"sku":"NLS9780415384841","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/0415384842.jpg?v=1751324803"}],"url":"https:\/\/www.worldofbooks.com\/en-ie\/collections\/author-books-by-bekithemba-gumbo.oembed","provider":"World of Books ","version":"1.0","type":"link"}