Small Water Bodies and Their Fisheries in Southern Africa - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Small Water Bodies and Their Fisheries in Southern Africa write by B. E. Marshall. This book was released on 1994. Small Water Bodies and Their Fisheries in Southern Africa available in PDF, EPUB and Kindle.
Freshwater Fisheries Ecology
Freshwater Fisheries Ecology - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Freshwater Fisheries Ecology write by John F. Craig. This book was released on 2016-01-12. Freshwater Fisheries Ecology available in PDF, EPUB and Kindle. Inland fisheries are vital for the livelihoods and food resources of humans worldwide but their importance is underestimated, probably because large numbers of small, local operators are involved. Freshwater Fisheries Ecology defines what we have globally, what we are going to lose and mitigate for, and what, given the right tools, we can save. To estimate potential production, the dynamics of freshwater ecosystems (rivers, lakes and estuaries) need to be understood. These dynamics are diverse, as are the earths freshwater fisheries resources (from boreal to tropical regions), and these influence how fisheries are both utilized and abused. Three main types of fisheries are illustrated within the book: artisanal, commercial and recreational, and the tools which have evolved for fisheries governance and management, including assessment methods, are described. The book also covers in detail fisheries development, providing information on improving fisheries through environmental and habitat evaluation, enhancement and rehabilitation, aquaculture, genetically modified fishes and sustainability. The book thoroughly reviews the negative impacts on fisheries including excessive harvesting, climate change, toxicology, impoundments, barriers and abstractions, non-native species and eutrophication. Finally, key areas of future research are outlined. Freshwater Fisheries Ecology is truly a landmark publication, containing contributions from over 100 leading experts and supported by the Fisheries Society of the British Isles. The global approach makes this book essential reading for fish biologists, fisheries scientists and ecologists and upper level students in these disciplines. Libraries in all universities and research establishments where biological and fisheries sciences are studied and taught should have multiple copies of this hugely valuable resource. About the Editor John Craig is Editor-in-Chief of the Journal of Fish Biology and has an enormous range of expertise and a wealth of knowledge of freshwater fishes and their ecology, having studied them around the globe, including in Asia, North America, Africa, the Middle East and Europe. His particular interests have been in population dynamics and life history strategies. He is a Fellow of the Linnean Society of London and the Royal Society of Biology.
Rapid Rural Appraisal, Participatory Rural Appraisal and Aquaculture
Rapid Rural Appraisal, Participatory Rural Appraisal and Aquaculture - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Rapid Rural Appraisal, Participatory Rural Appraisal and Aquaculture write by Philip Townsley. This book was released on 1996. Rapid Rural Appraisal, Participatory Rural Appraisal and Aquaculture available in PDF, EPUB and Kindle. This document is intended for aquaculture development specialists, aquaculture project managers and officials and specialists involved in the planning and management of aquaculture activities. it provides an introduction to rapid rural appraisal and participatory rural appraisal for people working in these fields. the principal components of these two approaches to information collection and planning are described together with the various tools used, with a case-study to illustrate their uses and some of the issues they raise. Possible applications of the approaches for those involved in aquaculture development are given and an outline is provided of the kinds of planning and institutional context where they can be best applied. The problems and shortcomings of the approaches are also discussed and guidelines are given for the use of alternative approaches to information gathering and planning.
Freshwater small pelagic fish and their fisheries in the major African lakes and reservoirs in relation to food security and nutrition
Freshwater small pelagic fish and their fisheries in the major African lakes and reservoirs in relation to food security and nutrition - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Freshwater small pelagic fish and their fisheries in the major African lakes and reservoirs in relation to food security and nutrition write by Food and Agriculture Organization of the United Nations. This book was released on 2019-02-01. Freshwater small pelagic fish and their fisheries in the major African lakes and reservoirs in relation to food security and nutrition available in PDF, EPUB and Kindle. Small pelagic fish species found in lakes and introduced to reservoirs dominate by volume and contribute some of the most important inland fisheries in Africa with steadily increasing catches and additional potential. This circular reviews the status and importance of the pelagic fish and fisheries, together with small fish in general, for sustainable and healthy livelihoods in Africa. It reviews the biology and biological production of the most important pelagic species in lakes and reservoirs as well as the impacts of environmental and climatic variation on the stocks of these species. It examines and discuss the various capture techniques together with potential of improvements in the fisheries and associated processing and national and regional trade within Africa. The knowledge generated by the circular will be useful for policy makers and development practitioners to design and implement more effective policies, strategies and programs that will contribute to reducing the food insecurity and conflicts that currently affect the people in sub-Saharan Africa.
FISHERIES IN THE DRYLANDS OF SUB-SAHARAN AFRICA
FISHERIES IN THE DRYLANDS OF SUB-SAHARAN AFRICA - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook FISHERIES IN THE DRYLANDS OF SUB-SAHARAN AFRICA write by Food and Agriculture Organization of the United Nations. This book was released on 2018-11-08. FISHERIES IN THE DRYLANDS OF SUB-SAHARAN AFRICA available in PDF, EPUB and Kindle. Drylands cover more than half sub-Saharan Africa and are home to nearly 50 percent of the region's people. This review documents resilience to climatic variability of fish resources in the sub-Saharan drylands. It also examines the potential for increasing their supply through improved use of available bodies of water, especially small reservoirs.
