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

Spawning and Recruitment Patterns of Tropical Marine Fish Stock

Published: 
March 1, 1988
U.S. Agency for International Development
There is a paucity of available knowledge regarding fundamental aspects of tropical fish stock demographics and dynamics. The global objective of this research was to develop quantitative techniques and heuristics designed to facilitate optimal benefits acquisition from TFS resources. This paper...Read more

Tropical Fishery System Model: Corecs - Continuous Recruitment Simulation

Published: 
March 1, 1988
U.S. Agency for International Development
The objective of this paper was to develop a continuous-time probabilistic simulation model which depicts salient features of the TFS. Simulation has been defined by Minsky (1986) as a situation in which one system mimics the behavior of another. in principle, a modern computer can be used to...Read more

User's Guide to CORECS -- Continuous Recruitment Simulation Model

Published: 
March 1, 1988
U.S. Agency for International Development
CORECS is a widely applicable finite time-step (At), numerical population simulation model. The model was designed for applications to a tropical context by utilizing continuous versus discrete decision variables. It was specifically designed to produce stochastic age-independent population...Read more

Abundance/Density Equations for Age - Structured Multicohort Populations: Mcon (Multiple Cohort N-Dimensional Model)

Published: 
March 1, 1988
U.S. Agency for International Development
Traditional yield models have gained recognition as generally reliable 'or describing population demographic processes over a spectrum of temperate sea fish life history classes. The models have embedded within them assumptions regarding constant parameterization and low to nonexistent...Read more

User's Guide to MCON (Multiple Cohort N-Dimensional Model) -- Modern Fisheries Economics

Published: 
March 1, 1988
U.S. Agency for International Development
MCON is a widely applicable second-order nonlinear differential equation multicohort population simulation model. The model incorporates salient population features through continuous nonlinear age-structured effects. The model uses coupled abundance-density equations for tropical multicohort...Read more

Irrigation System Operations Intensity and Relative Water Supply: the Asian Case

Published: 
March 1, 1988
U.S. Agency for International Development
In order to perform satisfactorily, an irrigation system should be able to maintain an appropriate balance among the objectives of productivity, equate and efficiency. This report delves into the management of irrigation systems.Read more
Regional focus: 
East Asia and Pacific

Proceedings of the Forum on the Performance of Irrigated Agriculture in Africa

Published: 
March 1, 1988
U.S. Agency for International Development
This report contains a number of different reports on the topic of irrigated agriculture in Africa. Delineating the important issue which constrain the performance of irrigated agriculture in sub-Saharan Africa; and strengthening the effectiveness of African irrigation professionals in dealing with...Read more
Regional focus: 
Sub-Saharan Africa

Bureaucratic and Farmer Participation in Irrigation Development

Published: 
March 1, 1988
U.S. Agency for International Development
This key objective of this study is to provide services in irrigated regions of the world for improving water management practices in the design and operation of existing and future irrigation projects and give guidance to USAID for selecting and implementing development options and investment...Read more
Regional focus: 
Sub-Saharan Africa

Methodologies for Interdisciplinary Diagnosis of Irrigation Systems: Review and Analysis of the Methodologies Used for Irrigation System Diagnosis Under the Water Management Synthesis II Project

Published: 
March 1, 1988
U.S. Agency for International Development
This program was an effort to synthesize the understanding of personnel from the managiing universities into an integrated perspective for application in improving irrigation water management around the world. One part of this program was to synthesize understanding about diagnosis of irrigation...Read more
Regional focus: 
Sub-Saharan Africa

Management - Focused Improvement of Irrigated Agriculture

Published: 
March 1, 1988
U.S. Agency for International Development
Water control for improved management at the project level has been battered through a series of efforts. The understanding gathered through field studies was used to develop a design and management approach for level basins to improve farmer management of these field irrigation systems. This...Read more
Regional focus: 
East Asia and Pacific

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