Duckweed Aquaculture PDF Download

Author: Paul Skillicorn
Publisher: World Bank Publications
ISBN:
Category : Science
Languages : en
Pages : 92

View

Book Description

Author: P. Skillicron
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description

Author: A. Desbonnet
Publisher: CABI
ISBN: 9781845930936
Category : Nature
Languages : en
Pages : 312

View

Book Description
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.

Author: Fadhi Al Nozaily
Publisher: CRC Press
ISBN: 9789054104254
Category : Technology & Engineering
Languages : en
Pages : 268

View

Book Description
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.

Author: Xuan Hieu Cao
Publisher: Springer Nature
ISBN: 3030110451
Category : Science
Languages : en
Pages : 185

View

Book Description
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.

Author: Maximus Basco
Publisher: CreateSpace
ISBN: 9781481123976
Category :
Languages : en
Pages : 58

View

Book Description
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.

Author: Stuart W. Bunting
Publisher: Taylor & Francis
ISBN: 1003857191
Category : Nature
Languages : en
Pages : 377

View

Book Description
This book provides an introduction to sustainable aquaculture practices, focusing on how we develop social, economic and environmental resilience. Aquaculture has seen phenomenal worldwide growth in the past 50 years, and many people view it as the best solution for the provision of high-quality protein to feed the world's growing population. This new edition has been fully revised and updated to reflect new developments in the field and includes new case studies. Focusing on developing more sustainable aquaculture practices and aquatic food systems, the book provides a toolbox of approaches to support widespread adoption and appropriate adaptation of regenerating aquaculture strategies, ensuring that it has practical relevance for both students and professionals. Drawing on a range of case studies from around the world, the book shows where progress, in terms of developing ecologically sound and socially responsible forms of aquaculture, has been made. The book is based on extensive evidence and knowledge of best practices, with guidance on appropriate adaptation and uptake in a variety of environmental, geographic, socio-economic and political settings. Concentrating on low-impact aquaculture systems and approaches, which have minimal adverse effects on the environment, the book also emphasizes socially responsible and equitable aquaculture development to enhance the natural resource base and livelihoods. Principles of Sustainable Aquaculture is essential reading for students and scholars of aquaculture, fisheries, marine and water resource governance, and sustainable agriculture and sustainable food systems more broadly. It will also be of interest to professionals working in the aquaculture and fisheries industries.

Author: Saber Abdel-Aziz Abdel-Salam Mohamed El-Shafai
Publisher:
ISBN: 9789058089564
Category : Aquaculture
Languages : en
Pages : 174

View

Book Description

Author: Deborah T. Hanfman
Publisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 68

View

Book Description

Author:
Publisher: Mittal Publications
ISBN: 9788170999423
Category : Water-supply
Languages : en
Pages : 374

View

Book Description
The Papers In The Volume Arise From The Second International Conference On The Subject Held In 2002. Papers Are Grouped Under 5 Chapters-Ground Water Development And Management Drinking Water Supply And Management-Watershed Development-Water Resources Management-Agriculture Development And Conservation And Management Of Water Resources For Sustainable Development. In All There Are 28 Papers.