Productivity and Efficiency

According to the U.S. Environmental Protection Agency, water efficiency is the smart use of our water resources through water-saving technologies and simple steps. Using water efficiently will help ensure reliable water supplies today and for future generations. Topics addressed in this theme provide insights, lessons, and guidance on how diverse stakeholders are working to improve water management and reduce water use.

Productivity and Efficiency Resources

Small-Scale Fisheries of San Miguel Bay, Philippines: Economics of Production and Marketing

Publication date:
January 1, 1982
U.S. Agency for International Development
The economic aspects of small-scale fisheries production and marketing operations in San Miguel Bay, Philippines, and the distribution of total catch and revenues among major gear types are addressed in this report, consisting of 9 separate papers, each viewing the topic from a different angle. The...Read more
Regional/Country focus:
Philippines
East Asia and Pacific

Constructing a Biogas System

Publication date:
January 1, 1982
U.S. Agency for International Development
This technical note describes how to construct a biogas system. A biogas system is a means of digesting animal manure anaerobically to produce methane gas which is burned to provide heat or light. The system consists of one or more digester tanks, a gas holder, an arrangement of gas pipes, and one...Read more

Designing a Biogas System

Publication date:
January 1, 1982
U.S. Agency for International Development
This technical note describes how to design a biogas system. A biogas system is a means of digesting animal manure anaerobically to produce methane gas which is burned to provide heat or light. The system consists of one or more digester tanks, a gas holder, an arrangement of gas pipes, and one or...Read more

Organization as a Strategic Resource in Irrigation Development: a Conference Report

Publication date:
January 1, 1982
U.S. Agency for International Development
This document examines several important recurring problems discussed at the Conference of Asian Irrigation (1982) including: (1) the flow of communication between local water user associations and the agency about project plans and implementation procedures have been inadequate; (2) local groups...Read more
Regional/Country focus:
South East Asia

Theory and Management of Tropical Fisheries

Publication date:
January 1, 1982
U.S. Agency for International Development
As yet no satisfactory sophisticated technique exists for assessing the effects of harvesting on multispecies tropical fisheries. Since these fisheries are so intense, however, the workshop reported here represented an attempt to develop a set of practical stock assessment techniques as well as to...Read more
Regional/Country focus:
South East Asia

Plywood Workboats for Small Scale Fisheries

Publication date:
January 1, 1982
U.S. Agency for International Development
Because expense and lack of supporting technology and skilled labor often preclude using steel or fiberglass to build the small, inshore fishing vessels used in developing country artisanal fisheries, attention is now being focused on plywood as a basic boatbuilding material. This practical manual...Read more

Guide for the Small-Scale Fishery Administrator: Information from the Harvest Sector

Publication date:
January 1, 1982
U.S. Agency for International Development
Fishery management personnel are more likely to be trained as biologists than as economists or sociologists, even though economic and sociocultural data are required for rational fisheries management. This guide is aimed at helping decision makers identify and collect these types of data from the...Read more

Biology and Culture of Tilapias

Publication date:
January 1, 1982
U.S. Agency for International Development
The cultivation of tilapias, an African fish which is a major protein source in many developing countries, is hampered by lack of data on the fish's biology and inadequate cooperation between research biologists and fish culturists. This paper reports the proceedings of a conference held to...Read more

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