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Articles 421 - 442 of 442
Full-Text Articles in Physical Sciences and Mathematics
Effects Of Sewage Pollution In The White River, Arkansas, Arthur V. Brown, Lawrence D. Willis, Peter P. Brussock
Effects Of Sewage Pollution In The White River, Arkansas, Arthur V. Brown, Lawrence D. Willis, Peter P. Brussock
Journal of the Arkansas Academy of Science
Recently there has been much emphasis placed on the importance of leaf detritus processing to the energetics of stream invertebrates. This study was designed primarily to assess the effects of municipal effluent on the ability of a stream community to utilize leaf detritus, and secondarily to evaluate the extent of the pollution of the White River by the Fayetteville, Arkansas, effluent discharge. Physical and chemical water quality and benthos were sampled periodically at one station upstream and two stations downstream from the discharge, and in the Richland Creek tributary. Processing of leaf detritus was also studied at each site using …
Feasibility Study For A Beaver Reservoir Agricultural Water Supply Volume I, James Ferguson, Robert Shulstad, William Bateman
Feasibility Study For A Beaver Reservoir Agricultural Water Supply Volume I, James Ferguson, Robert Shulstad, William Bateman
Technical Reports
An irrigation district of approximately 30,000 acres has been proposed to be located in Washington and Benton Counties in Northwest Arkansas utilizing water from Beaver Reservior. This report on the economic benefits of such a district is done under contract No. DACW03-81-C for the U.S. Army Corps of Engineers by the Water Resources Research Center at the University of Arkansas.
Feasibility Study For A Beaver Reservoir Agricultural Water Supply Volume Ii, James Ferguson, Robert Shulstad, William Bateman
Feasibility Study For A Beaver Reservoir Agricultural Water Supply Volume Ii, James Ferguson, Robert Shulstad, William Bateman
Technical Reports
An irrigation district of approximately 30,000 acres has been proposed to be located in Washington and Benton Counties in Northwest Arkansas utilizing water from Beaver Reservior. This report on the economic benefits of such a district is done under contr
An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume Iii-The Effects Upon The Zooplankton Associations, Edgar D. Short, Eugene H. Schmitz
An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System, Volume Iii-The Effects Upon The Zooplankton Associations, Edgar D. Short, Eugene H. Schmitz
Technical Reports
The primary purpose of the zooplankton phase of the coordinated study was to attempt to evaluate the effects of dredging operations on the abundance, distribution, composition and complexity of the zooplankton communities within the aquatic system of the Arkansas River. The other phases of investigation include fish, macroinvertebrates, phytoplankton and some physico-chemical parameters. The lack of baseline data, needed for measurement of previous ecological conditions from which to detect past and future changes, proved to be a major impediment to any evaluation. Although the study involved only about 240 miles of the river in Arkansas, it should serve as an …
Composition Of Arkansas Grapes During Maturation, Cameron Jones, Dominic T.C. Yang, Thomas O. Whitley
Composition Of Arkansas Grapes During Maturation, Cameron Jones, Dominic T.C. Yang, Thomas O. Whitley
Journal of the Arkansas Academy of Science
Changes in organic acid and glucose content during maturation and ripening of grapes grown in Arkansas in 1973 are shown for four French hybrid varieties, S5279, S10878, SV23- 657, and S13053, and for four rotundifolia varieties, Scuppernong, Tarheel, Fry, and Magoon. In all varieties the concentrations of malates and tartrates were highest in the early stages of berry growth after veraison. During ripening the titratable acidity decreased and Balling and pH measurements increased. Although varieties reached maturity on different dates, changes in parameters followed similar curves typical for grapes of the species but occurring over a short period (Johnson and …
Limnetic Zooplankton Dynamics In Beaver Reservoir Including An Inventory Of Copepod Species And An Evaluation Of Vertical Sampling Methods, Eugene H. Schmitz
Limnetic Zooplankton Dynamics In Beaver Reservoir Including An Inventory Of Copepod Species And An Evaluation Of Vertical Sampling Methods, Eugene H. Schmitz
Technical Reports
There can be little doubt that the development of primary food sources (i.e. plankton) is an important factor contributing to fish production. Applegate and Mullan (1968) report that an exceptional sport fish harvest is generally associated with the development of new reservoirs, although the precise reasons for such interrelations are not known. Kramer and Smith (1962) demonstrated the tendency of bass fingerlings to feed on Cladocera in proportion to the latter's abundance, and Hodson (1966) reported the same basic pattern for largemouth and spotted bass fingerlings in Beaver Reservoir. Applegate and Mullan (1969) analyzed the digestive tract contents of larval …
Effects Of Mosquito Control Chemicals On Aquatic Fauna, J. L. Lancaster Jr., M. V. Meisch
Effects Of Mosquito Control Chemicals On Aquatic Fauna, J. L. Lancaster Jr., M. V. Meisch
Technical Reports
No mosquito abatement districts have ever been organized in Arkansas. Mosquito control efforts have been largely adulticiding operations by either aerial application or ground thermal fogging machines. Practically no chemical applications have been directed at the larval stage in residual water in ditches and depressions from which adult populations arise. Some larviciding with ethyl parathion has been done in ricefields. Although the treatment is very effective in mosquito reduction, voluntary treatment has not been completely successful. Because relatively little insecticide has been used as a larvicide in Arkansas, it was possible to evaluate the effect of recommended larvicides on non-target …
Limnological, Ichthyological, And Parasitological Investigations On Arkansas Reservoris In Relation To Water Quality, John S. Carter, Carl E. Hoffman, Larry L. Olmsted, Raj V. Kilambi, Donald G. Cloutman, David A. Becker
Limnological, Ichthyological, And Parasitological Investigations On Arkansas Reservoris In Relation To Water Quality, John S. Carter, Carl E. Hoffman, Larry L. Olmsted, Raj V. Kilambi, Donald G. Cloutman, David A. Becker
Technical Reports
Lake Fort Smith, a 525 acre (212 ha) reservoir, was impounded in 1936 as a water supply for the city of Fort Smith. The reservoir is located on Clear Creek (Frog Bayou), a tributary of the Arkansas River, in the Boston Mountains 28 miles (45 km) northeast of the city of Fort Smith in Crawford County, Arkansas. A map and morphometric characteristics of Lake Fort Smith are given in Fig. 1 and Table I (Hoffman, 1951; Nelson, 1952). In 1956 Lake Shepherd Springs, a 750 acre (304 ha) impoundment, was created one mile upstream of Lake Fort Smith (Rorie, 1961). …
Limnology Of Four Bauxite Open-Pit Lakes, George L. Harp, Ronald D. Hubbard
Limnology Of Four Bauxite Open-Pit Lakes, George L. Harp, Ronald D. Hubbard
Journal of the Arkansas Academy of Science
The aquatic flora and fauna and 18 physicochemical characteristics of four bauxite open-pit lakes were studied from September 1969 to August 1970. The least acid lake (pH 3.4-4.4) supported 49 different aquatic insects, plankton, and higher aquatic plants. The most acid lake (pH 2.7-3.2) supported only 26 different plants and animals. Bauxite open-pit lakes within the pH range studied appear to be as relatively unproductive as their coal strip-mine lake counterparts, with which they share physicochemical and biological characteristics. Benthic macrofaunal diversity and abundance appear to be related more closely to distribution and abundance of leaf detritus than to hydrogen-ion …
Impoundment Effects On Water Quality As Reflected In Parasitism Of Reservoir Basses, David A. Becker
Impoundment Effects On Water Quality As Reflected In Parasitism Of Reservoir Basses, David A. Becker
Technical Reports
Our aquatic environments are rapidly becoming useless as natural resources through pollution from various sources. It is therefore necessary for us to further understand the various means which relate to this process. The interrelationships between the physico-chemical and biological water qualities undergo marked changes during the ageing of a reservoir. Eutrophication of these impoundments render them rela-tively useless as natural resources. It thus becomes apparent that we must gain further knowledge of these processes if we are to devise methods for proper reservoir management.
Proceedings Of The Arkansas Academy Of Science - Volume 24 1970, Academy Editors
Proceedings Of The Arkansas Academy Of Science - Volume 24 1970, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Specialized Weather Information For Arkansas Agriculture, Donald A. Downey
Specialized Weather Information For Arkansas Agriculture, Donald A. Downey
Journal of the Arkansas Academy of Science
No abstract provided.
Dicalcium Silicate (Brown Mud) As An Agricultural Liming Material, Lyell Thompson, V. H. Ledbetter
Dicalcium Silicate (Brown Mud) As An Agricultural Liming Material, Lyell Thompson, V. H. Ledbetter
Journal of the Arkansas Academy of Science
No abstract provided.
Instructions For Contributors, Academy Editors
Instructions For Contributors, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Three-Year Creel Census Of Lake Catherine, Lake Hamilton, And Lake Ouachita, Arkansas, James H. Stevenson, Clinton Richards
Three-Year Creel Census Of Lake Catherine, Lake Hamilton, And Lake Ouachita, Arkansas, James H. Stevenson, Clinton Richards
Journal of the Arkansas Academy of Science
No abstract provided.
Preliminary Report Of Standing Crop And Rates Of Harvest In Lake Fort Smith, Arkansas:1957 Through 1958, Charles F. Cole, Samuel L. Finkelstein
Preliminary Report Of Standing Crop And Rates Of Harvest In Lake Fort Smith, Arkansas:1957 Through 1958, Charles F. Cole, Samuel L. Finkelstein
Journal of the Arkansas Academy of Science
No abstract provided.
Comparisons Of Growth Rates Of Game Fish In Lake Catherine, Lake Hamilton, And Lake Ouachita, Arkansas, Andrew H. Hulsey, James H. Stevenson
Comparisons Of Growth Rates Of Game Fish In Lake Catherine, Lake Hamilton, And Lake Ouachita, Arkansas, Andrew H. Hulsey, James H. Stevenson
Journal of the Arkansas Academy of Science
No abstract provided.
38th Annual Meeting, 1954. Secretary's Report, Lowell F. Bailey
38th Annual Meeting, 1954. Secretary's Report, Lowell F. Bailey
Journal of the Arkansas Academy of Science
No abstract provided.
38th Annual Meeting, 1954. Program, Academy Editors
38th Annual Meeting, 1954. Program, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
38th Annual Meeting, 1954. Abstracts Of Papers, Academy Editors
38th Annual Meeting, 1954. Abstracts Of Papers, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Ionic Exchange In Soils: I. Measurement Of The Exchange Reaction By Means Of An Ion Exchange, D. A. Brown
Ionic Exchange In Soils: I. Measurement Of The Exchange Reaction By Means Of An Ion Exchange, D. A. Brown
Journal of the Arkansas Academy of Science
No abstract provided.
Freshwater Sponges In Arkansas, David Causey
Freshwater Sponges In Arkansas, David Causey
Journal of the Arkansas Academy of Science
No abstract provided.