Duckweed Aquaculture
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Duckweed Aquaculture
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Author : P. Skillicron
language : en
Publisher:
Release Date : 1993
Duckweed Aquaculture written by P. Skillicron and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Duckweed Aquaculture
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Author : Paul Skillicorn
language : en
Publisher: World Bank Publications
Release Date : 1993
Duckweed Aquaculture written by Paul Skillicorn and has been published by World Bank Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Science categories.
Nutrients Valorisation Via Duckweed Based Wastewater Treatment And Aquaculture
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Author : Saber Abdel-Aziz Abdel-Salam Mohamed El-Shafai
language : en
Publisher:
Release Date : 2004
Nutrients Valorisation Via Duckweed Based Wastewater Treatment And Aquaculture written by Saber Abdel-Aziz Abdel-Salam Mohamed El-Shafai and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Aquaculture categories.
Duckweed Profitable Feed For Tilapia Farming
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Author : Maximus Basco
language : en
Publisher: CreateSpace
Release Date : 2012-12-11
Duckweed Profitable Feed For Tilapia Farming written by Maximus Basco and has been published by CreateSpace this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-11 with categories.
Tilapia Feed - Duckweed is a tiny aquatic plant covering stagnant water bodies; it's seen in channels and waterways in semi-tropical and tropical climates in most countries. The green, three rounds fronds plant, or any of its four genera is known to many people who have seen it without realizing such aquatic plant is Duckweed or that such an abundant microphyte plant, considered an invasive plant, offers a great potential as animal feed, specially for fish. Its high level of protein content makes it an ideal fish feed for Tilapia, Carp and possibly other fish as well with great potential savings as fish feed. Duckweeds have structural features that have been simplified by natural selection. A Duckweed leaf is flat and ovoid. Many species have adventitious roots which function as a stability organ and which tend to lengthen as mineral nutrients in water are exhausted. Compared with most plants, Duckweed leaves have little fiber (5% in dry matter of cultivated plants) as they do not need to support upright structures. As a result the plant has little or no indigestible material even for monogastric animals like fish. This contrasts with many crops such as soya beans, rice, or maize, where approximately 50% of the biomass is in the form of high fiber, and low digestibility residues. Their unique properties, such as their phenomenal growth rate, it doubles its size every twenty-four (24) hours or so, offers great potential savings for the animal grower. Its high protein content, its ability to clean wastewater and growth quickly even in brackish water, have been investigated and documented in the last ten years. This manual intends to propagate the value of Duckweed as a food alternative to animal growth, focusing this intent on fish farming, where its potential impact will be recognized immediately by a savvy fish farmers for many reasons discussed here. In the last two decades Duckweed has been investigated for commercial applications seeking to treat wastewater by American firms; mainly by the PRISM Group which pioneered Duckweed farming in India and Peru. Both investigative programs in South Asia and Latin America, suggested that Duckweed cropping would be important as a source of fish and poultry feed; additionally the investigation demonstrated the use of Duckweed as a wastewater treatment alternative. This Technical Study for Latin America and Asia was designed to put together relevant information on Duckweed farming, its beneficial uses and to make such information available to people worldwide. The information in this technical manual comes from many sources; the contribution of the staff at the experimental station in Bangladesh and its directors, Harinder S. Kohli and Mohammed Ikramullah, are acknowledged. Paul Skillicorn and William Spira of the PRISM Group, and William Journey. Viet Ngo of the Lemna Corporation and Richard Middleton of Kalbermatten Associates are given recognition here. Others recognized for this important technical work ar Grimshaw, Khouri, Leeuwrik, van Santen and Macoun. Professor Thomas Popma of the International Center for Aquaculture at Auburn University provided technical support.
Duckweed Aquaculture
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Author : Sascha Iqbal
language : en
Publisher:
Release Date : 1999
Duckweed Aquaculture written by Sascha Iqbal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Urban Aquaculture
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Author : A. Desbonnet
language : en
Publisher: CABI
Release Date : 2005-01-01
Urban Aquaculture written by A. Desbonnet and has been published by CABI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-01-01 with Nature categories.
Millions of people are moving from rural areas to coastal cities. Meeting the basic human needs for protein foods in the future will be a difficult challenge. Fishery products are the world's most important source of animal protein, which has led to a doubling of the demand for fish since the 1950s. As we can not expect to catch more food from the sea, we must turn to farming the waters, not just hunting them. The new challenge for planners now is to accelerate aquaculture development and to plan for new production, making urban areas of production, particularly recycled urban wastewater. This book includes papers from authors in the U.S., Europe, and Asia that review these developing issues from the perspective of both developed and developing countries.
Aquaculture Systems For Wastewater Treatment
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Author : Sherwood C. Reed
language : en
Publisher:
Release Date : 1980
Aquaculture Systems For Wastewater Treatment written by Sherwood C. Reed and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Aquaculture categories.
Performance And Process Analysis Of Duckweed Covered Sewage Lagoons For High Strength Sewage The Case Of Sana A Yemen
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Author : Fadhi Al Nozaily
language : en
Publisher: CRC Press
Release Date : 2000-01-01
Performance And Process Analysis Of Duckweed Covered Sewage Lagoons For High Strength Sewage The Case Of Sana A Yemen written by Fadhi Al Nozaily and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-01-01 with Technology & Engineering categories.
Duckweed (L.gibba)-covered sewage lagoons (DSLs) are low cost treatment systems, especially suitable for warm climates, or in lands where there are warm seasons. This study attempts to assess DSL system as a new technology, contributing to the understanding of the different mechanisms in the system. Duckweed-covered sewage lagoons could either replace complete wastewater stabilization ponds (WSPs) or be introduced as a second stage in an integrated WSP-DSL treatment system, which could then be used for purifying municipal wastewater, achieving suitable effluent for reuse in agriculture. The duckweed harvested from DSL systems has, in itself, an intrinsic economic value.
The Duckweed Genomes
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Author : Xuan Hieu Cao
language : en
Publisher: Springer Nature
Release Date : 2020-01-07
The Duckweed Genomes written by Xuan Hieu Cao and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-07 with Science categories.
This book tells the story behind the first Spirodela genome sequencing project. Further, it describes the current genomics applications of these findings, and efforts to sequence new genomes within the family. The closing chapters address the sequencing of the over 1 Gigabase Wolffia genomes, which could have major impacts on genome evolution and agricultural research. The duckweed or Lemnaceae family is a collection of 5 genera and 37 species of the smallest, fastest-growing flowering plants. Many of these aquatic monocotyledonous plants can grow all over the world, in a variety of climates. Given their simplified and neotenous morphology, duckweeds have been researched for several decades as a model species for plant physiology and ecotoxicological research, contributing to our understanding e.g. of flowering response, plant circadian systems, sulfur assimilation pathways and auxin biosynthesis. In addition, duckweed-based treatment has been a favorite and feasible means, especially in developing countries, of removing phosphorus and pharmaceutical chemicals from sewage and wastewater. With a dry annual mass yield per hectare of up to 80 tonnes (equivalent to 10 tonnes of protein), duckweed is also a promising aquatic crop in new modern and sustainable agriculture. Besides being an excellent primary or supplemental feedstock for the production of livestock and fish, duckweed biomass can be utilized as a potential resource for human nutrition, biofuel, or bioplastics, depending on water quality as well as protein or starch accumulating procedures. These academic and commercial interests have led to international efforts to sequence the Spirodela polyrhiza genome, the smallest and most ancient genome in the family.
Effect Of Operational Variables On Nitrogen Transformations In Duckweed Stabilization Ponds
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Author : Julia Rosa Caicedo Bejarano
language : en
Publisher: CRC Press
Release Date : 2005-03-24
Effect Of Operational Variables On Nitrogen Transformations In Duckweed Stabilization Ponds written by Julia Rosa Caicedo Bejarano and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-03-24 with Nature categories.
There is an urgent need to develop and improve low cost technologies for wastewater treatment. Simultaneously treating wastewater and producing duckweed in a pond system is, therefore, an attractive solution contributing to both environmental protection and food production. Duckweed has excellent qualities: a high protein content, a high growth rate and is an easy crop to handle. The small plant turns nitrogen from wastewater into a food source. This thesis reports on the effect of different operational variables, like anaerobic pre-treatment, the combination of algae and duckweed ponds and pond depth. Improved nitrogen removal was obtained through the combination of duckweed ponds with algae ponds. Duckweed pond systems could be designed with shallow depth without affecting nitrogen removal efficiency. This research is the result of the cooperative effort between the EIDENAR, Univalle, Cali, Colombia and the UNESCO-IHE Institute for Water Education in Delft, the Netherlands.