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Articles 11221 - 11250 of 12149
Full-Text Articles in Life Sciences
Agricultural Water Quality Criteria : Irrigation Aspects., P R. George
Agricultural Water Quality Criteria : Irrigation Aspects., P R. George
Resource management technical reports
Water quality criteria for irrigation are imprecise. The final result of quality evaluation depends on plant, soil and climatic variables all of which can be inter-dependent. A range of management strategies of varying complexity are available to mitigate the effects of poor quality water. The heavy winter rainfall in the south-west of Western Australia affects the applicability of published salinity criteria most of which have been developed in arid and semi-arid environments with little effective rainfall.
Effects Of Wastewater Discharges On Periphyton Growth In Lake Mead, Nevada-Arizona, Marsha Korb Morris
Effects Of Wastewater Discharges On Periphyton Growth In Lake Mead, Nevada-Arizona, Marsha Korb Morris
Publications (WR)
A study of the effects of secondary-treated wastewater on periphyton growth in Lake Mead, Nevada-Arizona was conducted from September 1979 to December 1980. Periphyton ash-free dry weight, chlorophyll-a, dominant species composition, and alkaline phosphatase activity were measured on fiberglass substrates. Substrates were incubated for two to four weeks in littoral and limnetic habitats. Physical and chemical variables and phytoplankton chlorophyll-a were measured concurrently.
Transparency increased with increasing distance from the discharge. Secchi depth ranged from 0.75 m at the discharge confluence (station 2) in August, to greater than 20 m at the most distant stations (stations 9 and 10) in …
The Prairie Naturalist Volume 14, No. 4. December 1982
The Prairie Naturalist Volume 14, No. 4. December 1982
The Prairie Naturalist
THE MICROBIAL AND VEGETATIONAL RESPONSE TO FIRE IN THE LYNX PRAIRIE PRESERVE, ADAMS COUNTY, OHIO ▪ A. E. Annala and L. A. Kapustka
ASPECTS OF BEHAVIOR IN FREE-RANGING BARBARY SHEEP (AMMOTRAGUS LERVIA) G. G. Gray and C. D. Simpson
HOME RANGES OF MULE DEER BUCKS IN THE TEXAS PANHANDLE ▪ B. H. Koerth and F. C. Bryant
DETERMINING SEX OF PLAINS POCKET GOPHERS BY INCISOR WIDTH ▪ R. M. Case and A. B. Sargeant
BOOK REVIEWS:
On Counting Birds ▪ S. A. Mikol
Freshwater Marshes ▪ R. M. Kaminiski
NOTICE TO AUTHORS ▪ Editor
INDEX TO VOLUME 14 …
Shire Of Manjimup : A Brief Assessment Of The Physical Land Resources With Respect To Horticultural Land Use, M R. Wells, K E. Hawley
Shire Of Manjimup : A Brief Assessment Of The Physical Land Resources With Respect To Horticultural Land Use, M R. Wells, K E. Hawley
Resource management technical reports
No abstract provided.
State Of The Fisheries Report 1981, Department Of Fisheries And Wildlife, Western Australia
State Of The Fisheries Report 1981, Department Of Fisheries And Wildlife, Western Australia
Status Reports of the Fisheries and Aquatic Resources
Western Australia continues to be one of the leading fishing States in Australia. The total gross value of fish, crustaceans and molluscs for 1980/81 was $82.8 million (Table 1) to which may be added the value of the pearl culture industry resulting in a total value of approximately $100 million.
Environmental Influence On The Migratory Behavior Of The Brown Shrimp In Pamlico Sound North Carolina, Michael Andrew Matylewich
Environmental Influence On The Migratory Behavior Of The Brown Shrimp In Pamlico Sound North Carolina, Michael Andrew Matylewich
OES Theses and Dissertations
Environmental conditions in the nursery areas during times of development affect the migratory behavior of the brown shrimp (Penaeus aztecus) by influencing growth and natural mortality. A linearized logistic model and a multiple linear model are used to relate environmental factors (week number, water temperature, salinity, air temperature, precipitation, net heating degree days, river discharge) to the cumulative proportion of catch and catch-per-unit-effort, respectively. Multiple regression analysis yielded equations containing the week number, the water temperature and an interaction term as the independent variables. Predictions of total annual yield and total annual catch-per-unit-effort are made using the migratory …
The Prairie Naturalist Volume 14, No. 3. September 1982
The Prairie Naturalist Volume 14, No. 3. September 1982
The Prairie Naturalist
FECAL pH OF DESERT AND EASTERN COTTONTAIL RABBITS IN TEXAS ▪ R. J. Warren and K. T. Scribner
NESTING OF THE AMERICAN AVOCET IN NORTH DAKOTA ▪ J. G. Sidle and P. M. Arnold
REVISED CHECKLIST OF NORTH DAKOTA BIRDS ▪ C. A. Fannes and R. E. Stewart
THE EFFECT OF WEATHER FACTORS ON AUDUBON CHRISTMAS BIRD COUNTS L. L. Falk
NOTES:
Additional Nest Record for Red-breasted Nuthatch in North Dakota ▪ R. Hopkins
A Henslow's Sparrow in North Dakota ▪ R. B. Renken and J. J. Dinsmore
First Documented Record of the Moose in South Dakota ▪ D. A. …
Some Variations In Distribution Of Fishes In Large Mainstream Reservoirs Associated With Artificial Cover, Donald W. Johnson, Elizabeth M. Choinski
Some Variations In Distribution Of Fishes In Large Mainstream Reservoirs Associated With Artificial Cover, Donald W. Johnson, Elizabeth M. Choinski
KWRRI Research Reports
The influence of artificial cover (brush piles) on fish populations in Kentucky Lake and Lake Barkley was studied. Mature and larval fishes were collected from deep and shallow sites with and without cover in a bay of each lake. Highest densities of mature crappie, bass, and sauger were found adjacent to deep attractors, while larval crappie and minnows were most concentrated at shallow brush piles. Shad (both adult and larvae) were not congregated at attractor sites. Information gathered supports the continuation of artificial cover installation and water level management procedures which will provide high and stable levels through spring spawning …
An Ecological Analysis Of Relic Diatoms In Sediments Of Las Vegas Bay, Lake Mead, David Ross Hetzel
An Ecological Analysis Of Relic Diatoms In Sediments Of Las Vegas Bay, Lake Mead, David Ross Hetzel
Publications (WR)
Relic diatoms in sediments of the inner Las Vegas Bay, near the Las Vegas Wash sewage inflow, were examined in order to assess historic trophic conditions in this area of Lake Mead. Diatom sedimentation rates and ratios of Araphidineae/Centrales (A/C) diatom groups were determined from sediment cores collected in the old wash channel 1.5 km from the sewage inflow (station 2), in a small cove 1.5 km further downstream (station 3) and in an adjacent embayment off Gypsum Wash (station 4). Diatom sedimentation rates generally increased from the bottom to the top of each core, but pronounced minima existed at …
The Effects Of Kepone On The Estuarine Copepod Acartia Tonsa, Judith Marie Wilson
The Effects Of Kepone On The Estuarine Copepod Acartia Tonsa, Judith Marie Wilson
Biological Sciences Theses & Dissertations
Due to the contamination of a 113 km reach of the James River, Kepone poses a serious environmental threat to the Chesapeake Bay. The purpose of the study is to determine the acutely toxic and sublethal levels of kepone for the copepod Acartia tonsa, and to investigate what effects those levels may have on filtration rates.
Kepone was determined to be acutely toxic to A. tonsa, with a 96 hour LC50 of 4.96 ug/1. Dunaliella tertiolecta was selected as the food source for the grazing experiments. Kepone concentrations of 0.046 ug/1 significantly (0.05 level) reduced the flltering rate …
The Sale, Lease Or Exchange Of Indian Water Rights For Energy Development, Thomas W. Fredericks
The Sale, Lease Or Exchange Of Indian Water Rights For Energy Development, Thomas W. Fredericks
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
34 pages.
Contains references.
Weather Resources Management And Interbasin Transfer Law [Outline], Ray Jay Davis
Weather Resources Management And Interbasin Transfer Law [Outline], Ray Jay Davis
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
21 pages (includes illustrations).
Water Problems & Issues Affecting United States-Mexico Relations: Policy Options & Alternatives, Albert E. Utton
Water Problems & Issues Affecting United States-Mexico Relations: Policy Options & Alternatives, Albert E. Utton
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
42 pages.
Contains 6 pages of endnotes.
The California State Water Project, Jerry Meral
The California State Water Project, Jerry Meral
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
27 pages.
A Case Study: The Yellowstone River, Donald Mcintyre
A Case Study: The Yellowstone River, Donald Mcintyre
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
106 pages (includes maps).
Contains 15 appendices.
A Case Study Of The Windy Gap Project [Outline], John M. Sayre
A Case Study Of The Windy Gap Project [Outline], John M. Sayre
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
7 pages.
The Metropolitan Water District Of Southern California [Outline], Carl Boronkay
The Metropolitan Water District Of Southern California [Outline], Carl Boronkay
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
4 pages.
New York City’S Battles For Imported Water, J. Kevin Healy
New York City’S Battles For Imported Water, J. Kevin Healy
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
16 pages (includes illustrations and maps).
The Central Arizona Project, Jon Kyl
The Central Arizona Project, Jon Kyl
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
38 pages (includes illustrations).
Contains footnotes.
Contains 9 attachments.
Water Development For Coal Pipelines: The Etsi Story, Wesley M. Witten
Water Development For Coal Pipelines: The Etsi Story, Wesley M. Witten
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
8 pages (includes 1 map).
Constitutional Restraints On Protecting State Interests In Water Rights, Charles E. Corker
Constitutional Restraints On Protecting State Interests In Water Rights, Charles E. Corker
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
33 pages.
Contains references.
El Paso/New Mexico Controversy [Outline], John P. Frank
El Paso/New Mexico Controversy [Outline], John P. Frank
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
3 pages.
The Sporhase Case, Dennis Montgomery
The Sporhase Case, Dennis Montgomery
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
35 pages.
Contains references.
Contains 5 appendices.
A Downstream Perspective On South Dakota’S Purported Sale Of Water To Etsi, Norman W. Thorson
A Downstream Perspective On South Dakota’S Purported Sale Of Water To Etsi, Norman W. Thorson
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
29 pages (includes 2 maps).
Contains 13 attachments.
South Dakota And The Etsi Experience, William J. Janklow
South Dakota And The Etsi Experience, William J. Janklow
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
23 pages.
Interstate Water Compacts, John A. Carver
Interstate Water Compacts, John A. Carver
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
33 pages.
Contains references.
Federal Reserved Rights Claims For Uses On Out-Of-Basin Lands [Outline], Richard B. Collins
Federal Reserved Rights Claims For Uses On Out-Of-Basin Lands [Outline], Richard B. Collins
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
3 pages.
Extent And Limits Of Federal Power [Outline], George A. Gould
Extent And Limits Of Federal Power [Outline], George A. Gould
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
3 pages.
A Century And A Half Of Interbasin Diversions Or 100 Years Since Coffin V. Left Hand Ditch Co., Ralph W. Johnson
A Century And A Half Of Interbasin Diversions Or 100 Years Since Coffin V. Left Hand Ditch Co., Ralph W. Johnson
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
19 pages.
Contains references.
Assessing Feasibility Of A Project, Michael D. Yokell
Assessing Feasibility Of A Project, Michael D. Yokell
New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)
28 pages (includes illustrations).
Contains references.