Author: D. TweddlePublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 90
Book Description
A Limnological Bibliography of Malawi
Author: D. TweddleLimnology and Hydrology of Lakes Tanganyika and Malawi
Author: R. C. M. CrulPublisher: Unesco
ISBN:
Category : Science
Languages : en
Pages : 116
Book Description
Lakes Tanganyika and Malawi are major sources of fish protein, reservoirs of fresh water and important avenues of transporation. Their biodiversity and unique wildlife give them a high scientific value. This book provides background on important physical, chemical and biological events occurring in these lakes that will be of interest to those involved in the management of African inland waters.
Source Book for the Inland Fishery Resources of Africa
Author: J.-P. vanden BosschePublisher: Food & Agriculture Org.
ISBN: 9789251029831
Category : Technology & Engineering
Languages : en
Pages : 432
Book Description
Classification and Inventory of the World’s Wetlands
Author: C.M. FinlaysonPublisher: Springer Science & Business Media
ISBN: 9401104271
Category : Science
Languages : en
Pages : 193
Book Description
This book brings together, for the first time, information on various wetland classification systems and wetland inventories from around the world, outlining regional, national and local wetland classifications developed in Africa, Australia, Canada, China, Europe, India, South America and the USA. Oriented towards the conservation and management of wetlands, these existing national and regional classification systems have been useful in providing an essential base for the development of an international system. The volume also reviews various attempts at drawing up an inventory of wetlands in different parts of the world, ranging from field and literature surveys to highly sophisticated efforts using aerial photography and satellite imaging. Audience: Workers in wetland ecology, especially those working on classification, inventory, conservation, or management of wetlands at the local, national, regional or international levels.
A Directory of African Wetlands
Author: R. H. HughesPublisher: IUCN
ISBN: 9782880329495
Category : Nature
Languages : en
Pages : 866
Book Description
A directory of Afrotropical wetlands of international importance. Contents -Region 1: North West Africa, Region 2: North East Africa, Region 3: West Africa, Region 4: Central Africa, Region 5: Southern Africa, Region 6: Madagascar.
International Books in Print
Author: A History of the Water Hyacinth in Africa
Author: Jeremiah Mutio KitundaPublisher: Lexington Books
ISBN: 149852463X
Category : History
Languages : en
Pages : 337
Book Description
Humans and animals are not the only creatures that migrate. Plants also do. This book is a comprehensive and analytical account of the migration of an Old World plant, water hyacinth (also known to botanists as Eichhornia Crassipes) from the Amazon Basin and surrounding areas to Africa through human agency from about 1800 to the present. As an integrative work, which benefits from methodologies and conceptual approaches drawn from limnology, botany, biology, geography, history, ecology and other social sciences and humanities, the book further explores the political, economic, and ecological consequences of the spread of water hyacinth from its native habitat through European botanical gardens to Africa rivers, lakes, dams, and wetlands. In part, as a narrative of Western tinkering with African ecologies gone awry, the study has strong lessons for environmental historians, and social scientists as well as contemporary foundations, aid workers, development experts and African governments. Although it may appear to be a micro-history of a single plant, water hyacinth, it illuminates broader issues in the history of the modern environment in Africa and similar studies worldwide. This study is primarily rooted on the histories of colonialism, bioinvasion, environmental realities and experiences in Africa. The highly visible pathways of hyacinth’s spread across international frontiers along watercourses and communication networks means that not only is this a trans-boundary environmental affair, but one which directly involves bilateral relations between African states.
Source Book for the Inland Fishery Resources of Africa
Author: J.-P. vanden BosschePublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 762
Book Description
Proceedings
Author: A Strategic Reassessment of Fish Farming Potential in Africa
Author: José Aguilar-ManjarrezPublisher: Food & Agriculture Org.
ISBN: 9789251041390
Category : Business & Economics
Languages : en
Pages : 196
Book Description
"(Reprint. First published in 1998) The present study is an update of an earlier assessment of warm-water fish farming potential in Africa, by Kapetsky (1994). The objective of this study was to assess locations and areal expanses that have potential for warm-water and temperate-water fish farming in continental Africa. The study was based on previous estimates for Africa by the above author, and on estimates of potential for warm-water and temperate-water fish farming in Latin America by Kapetsky and Nath (1997). However, a number of refinements have been made. The most important refinement was that new data allowed a sevenfold increase in resolution over that used in the previous Africa study, and a twofold increase over that of Latin America (i.e. to 3 arc minutes, equivalent to 5 km x 5 km grids at the equator), making the present results more usable in order to assess fish farming potential at the national level. A geographical information system (GIS) was used to evaluate each grid cell on the basis of several land-quality factors important for fish-farm development and operation regardless of the fish species used. Protected areas, large inland water bodies and major cities were identified as constraint areas, and were excluded from any fish farming development altogether. Small-scale fish farming potential was assessed on the basis of four factors: water requirement from ponds due to evaporation and seepage, soil and terrain suitability for pond construction based on a variety of soil attributes and slopes, availability of livestock wastes and agricultural by-products as feed inputs based on manure and crop potential, and farm-gate sales as a function of population density. For commercial farming, an urban market potential criterion was added based on population size of urban centres and travel time proximity. Both small-scale and commercial models were developed by weighting the above factors using a multi-criteria decision-making procedure. A bioenergetics model was incorporated into the GIS to predict, for the first time, fish yields across Africa. A gridded water temperature data set was used as input to a bioenergetics model to predict number of crops per year for the following three species: Nile tilapia (Oreochromis niloticus), African catfish (Clarias gariepinus) and Common carp (Cyprinus carpio). Similar analytical approaches to those by Kapetsky and Nath (1997) were followed in the yield estimation. However, different specifications were used for small-scale and commercial farming scenarios in order to reflect the types of culture practices found in Africa. Moreover, the fish growth simulation model, documented in Kapetsky and Nath (1997), was refined to enable consideration of feed quality and high fish biomass in ponds. The small-scale and commercial models derived from the land-quality evaluation were combined with the yield potential of each grid cell for each of the three fish species to show the coincidence of each land-quality suitability class with a range of yield potentials. Finally, the land quality-fish yield potential combinations were put together to show where the fish farming potential coincided for the three fish species."