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
Food Habits and Feeding Chronology of Channel Catfish, Ictalurus Punctatus (Rafinesque) in Conowingo Reservoir
Published:
January 1, 1970U.S. Agency for International Development
The single 24-hour feeding chronology study indicated that subadult and adult catfish fed heavily during the daylight hours although some feeding also occurred in the night. The major foods eaten by subadults and adults differed over the 24-hour period. Fishes formed the hulk of the diet at 0600...Read more
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United StatesNorth AmericaMethods of Analysis for Waters, Organic Matter, and Pond Bottom Soils Used in Fisheries Research
Published:
January 1, 1969U.S. Agency for International Development
This report provides guidance on water quality testing with respect to fisheries and increasing fish production and the methods to doing so.Read more
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United StatesNorth AmericaInternational Center for Fisheries: Research & Training
Published:
January 1, 1969U.S. Agency for International Development
Under contract with USAID, the Auburn University Agricultural Experiment Station operated a world wide international fisheries project entitled "Increasing Fish Production by Improve Fishcultures." The project was designed to assist developing countries in increasing their capabilities to...Read more
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United StatesNorth AmericaFishing Success for Channel Catfish and White Catfish in Ponds With Daily Feeding
Published:
January 1, 1969U.S. Agency for International Development
Channel and white catfish fingerlings, stocked in ponds with large' mouth bass at densities of 2,000 to 3,000 catfish per acre separately or in combination and given daily feeding have continued to provide excellent sport fishing. Four-inch fingerling catfish stocked by February and given...Read more
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United StatesNorth AmericaEstimation of Standing Crops and Rates of Feeding Fish in Ponds
Published:
January 1, 1968U.S. Agency for International Development
This study estimates how standing crops can be used in feeding fish and performs a technical analysis of how to increase fish production efficiently.Read more
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United StatesNorth AmericaFish Kills Caused By Phytoplankton Blooms and Their Prevention
Published:
May 25, 1966U.S. Agency for International Development
Different types of plankton blooms form dense concentrations or scums on surface water have been the primary cause of fish kills in ponds. This document provides a summary of this type of problem in Alabama.Read more
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United StatesNorth AmericaFish May Be Cash Crop for Arizona Farmers
The National Institutes for Water Resources
Variants of aquaculture exist depending upon the prevailing conditions of an area. For example, fish farming operations in Arizona, a mostly hot, arid region, will differ from what occurs in the Southeast, a wet region and the center of aquaculture in the United States. Desert aquaculture is lesser...Read more
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United StatesNorth AmericaAbandoned Farmland Often Is Troubled Land in Need of Restoration
The National Institutes for Water Resources
Land plowed, fertilized, and irrigated obviously is useful land, with purpose and value. No longer farmed and lying fallow, that same land may be barren or grow only sparse, weedy vegetation in dry and infertile soils. Called abandoned or derelict farmland, this land often is an environmental...Read more
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United StatesNorth AmericaWater for the World: Designing a Biogas System
U.S. Agency for International Development
A biogas system is a means of digesting animal manure anaerobically to produce methane gas which is burned to provide heat or light. This technical note describes how to design a biogas system.Read more
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United StatesNorth AmericaWater for the World: Operating and Maintaining a Biogas System
U.S. Agency for International Development
A biogas system is a means of digesting animal manure anaerobically to produce methane gas which is burned to provide heat or light. This technical note describes how to operating and maintain a biogas system.Read more
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