Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Arkansas, Fayetteville

Discipline
Keyword
Publication Year
Publication
Publication Type

Articles 5221 - 5250 of 5607

Full-Text Articles in Entire DC Network

Zooplankton Population Structure In Three Reservoirs Near The Ouachita Mountain-Gulf Coastal Plain Interface, Stephen B. Smith, Thomas E. Moen Jan 1983

Zooplankton Population Structure In Three Reservoirs Near The Ouachita Mountain-Gulf Coastal Plain Interface, Stephen B. Smith, Thomas E. Moen

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Evaluation Of A Frame Trawl And Tucker Trawl For Sampling Young-Of-The-Year Fish, Michael R. Dewey, Thomas E. Moen Jan 1983

Evaluation Of A Frame Trawl And Tucker Trawl For Sampling Young-Of-The-Year Fish, Michael R. Dewey, Thomas E. Moen

Journal of the Arkansas Academy of Science

Relative efficiencies of two trawls — a 1.88 m² frame trawl and a 2 m² Tucker trawl— were compared for sampling young-of-the-year (YOY) shad, Dorosoma sp., crappies, Promoxis sp., and sunfishes, Lepomis sp. Seven tests with six replicate hauls for each net in each test were analyzed by non-parametric techniques. Relative efficiency ratios, calculated from mean density estimates, were compared. The Tucker trawl was the more efficient for sampling YOY shad, its relative efficiency increasing as shad length increased. Results for the other two taxa were less consistent. The larger size range of YOY shad captured compared with the size …

Go to article

Size Variation Of Ungraded And Graded Channel Catfish Reared In Cages, Donald C. Greenland, Walter R. Robison, Scott H. Newton Jan 1983

Size Variation Of Ungraded And Graded Channel Catfish Reared In Cages, Donald C. Greenland, Walter R. Robison, Scott H. Newton

Journal of the Arkansas Academy of Science

Graded and ungraded channel catfish (Ictalurus punctatus) fingerlings stocked in three partitioned floating cages were reared for 140 days during the summer, 1982. Fish were fed to satiation once daily with a commercial pelleted ration. At harvest, graded fish averaged 403 g and ungraded 362 g. Coefficients of variation indicated graded fish were more uniform in size and a significantly greater proportion of the graded fish were of salable size (> 340 g).

Go to article

Mensural Discrimination Of The Skulls Of Arkansas Peromyscus, V. Rick Mcdaniel, C. Renn Tumlison, Phil Mclarty Jan 1983

Mensural Discrimination Of The Skulls Of Arkansas Peromyscus, V. Rick Mcdaniel, C. Renn Tumlison, Phil Mclarty

Journal of the Arkansas Academy of Science

Twelve parameters were measured on skulls of four species of Peromyscus from Arkansas. Univariate statistical tests, multivariate analyses of variance, and principal axis factor analyses were performed on the data set and/or subsets in a search for species-level discriminating characters. Total length of skull was found to discriminate between skulls of P. maniculatis, P. leucopus, and a combined group of P. attwateri and P. gossypinus. Furthermore, the ratio of interorbital width and length of nasal bone was found to adequately discriminate between skulls of P. attwateri and P. gossypinus.

Go to article

Neutral Sugars In Selected Pit Viper, Elapid, Lizard And Scorpion Venoms, Ahmed El-Sherif, Paul D. Gwinup, Bob D. Johnson, Dewey H. Sifford Jan 1983

Neutral Sugars In Selected Pit Viper, Elapid, Lizard And Scorpion Venoms, Ahmed El-Sherif, Paul D. Gwinup, Bob D. Johnson, Dewey H. Sifford

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Status Of The Bat Myotis Keenii In The Arkansas Ozarks, Michael J. Harvey, V. Rick Mcdaniel Jan 1983

Status Of The Bat Myotis Keenii In The Arkansas Ozarks, Michael J. Harvey, V. Rick Mcdaniel

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Spawning The Grass Carp Female X Bighead Carp Male, Mike Freeze, Scott Henderson Jan 1983

Spawning The Grass Carp Female X Bighead Carp Male, Mike Freeze, Scott Henderson

Journal of the Arkansas Academy of Science

Methods and procedures for artificially spawning the female grass carp (Ctenopharyngodon idella) X male bighead carp (Aristichthys nobilis) are presented. Broodstock selection and treatment, hormone injections, ovulation, fertilization, hatching techniques and stocking rates are discussed. This paper outlines the procedures necessary to successfully produce hybrid grass carp

Go to article

Concert Recording 1984-03-12, Suzanne Ornstein, Clay Ruede, Thomas Schmidt, Arden Trio Jan 1983

Concert Recording 1984-03-12, Suzanne Ornstein, Clay Ruede, Thomas Schmidt, Arden Trio

Concert Recordings & Programs

Trio in G major, hob. XV, 25. Andante ; Poco adagio ; Finale rondo all'ongarese (presto) / Franz Joseph Haydn -- Trio in C minor, op. 66. Allegro energico e con fuoco ; Andante espressivo ; Scherzo (molto allegro quasi presto) ; Finale (Allegro appassionata) / Felix Mendelssohn -- Trio (1915). Modere ; Pantoum (Assez vif) ; Passacaile ; Finale (Anime) / Maurice Ravel

Go to article

Distribution And Seasonal Occurrence Of The Scutelleridae, Corimelaenidae And Cydnidae Of Arkansas, Linda A. Lee, Harvey E. Barton Jan 1983

Distribution And Seasonal Occurrence Of The Scutelleridae, Corimelaenidae And Cydnidae Of Arkansas, Linda A. Lee, Harvey E. Barton

Journal of the Arkansas Academy of Science

A total of 16 genera and 37 species and subspecies of Corimelaenidae, Cydnidae and Scutelleridae is recorded as occurring or possibly occurring in Arkansas. Nine species of Scutelleridae contained in six genera, 13 species and subspecies in three genera of Corimelaenidae ( =Thyreocoridae) and 15 species and subspecies of Cydnidae found in seven genera are reported as occurring or possibly occurring in Arkansas. Twenty-seven species and subspecies contained in 13 genera were collected or recorded from entomological holdings within the state. Two species in two genera were reported in the literature as occurring in Arkansas. Based on distribution records in …

Go to article

Computer Pattern Recognition Of Action Potentials, Ronald S. Remmel Jan 1983

Computer Pattern Recognition Of Action Potentials, Ronald S. Remmel

Journal of the Arkansas Academy of Science

A general method of pattern recognition was applied to the problem of recognizing extracellularly-recorded neuronal action potentials in the presence of noise and other pulses. A PDP1 1/23 performed the calculations. There were four stages: 1.) A bandpass filter attenuated noises; 2.) the data input program digitized the signal every 55 μsec. If the signal exceeded a threshold, 12 samples of the signal and the time were written onto the disk; 3.) the pulse discriminating program recognized an action potential by fitting the 12 points with this function: v(t) = (a + bt + ct² ) exp(-t/Ƭ). For each pulse …

Go to article

Flat Plate Solar Thermal Collectors: A Comparison Of Efficiencies Of Various Collector Configurations, Rudolph J. Eichenberger Jan 1983

Flat Plate Solar Thermal Collectors: A Comparison Of Efficiencies Of Various Collector Configurations, Rudolph J. Eichenberger

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Preliminary Report On The Zygoptera (Damselflies) Of Arkansas, George L. Harp Jan 1983

Preliminary Report On The Zygoptera (Damselflies) Of Arkansas, George L. Harp

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Aquatic Macroinvertebrates Of The Hiatt Prairie Region, Franklin County, Arkansas, Julie A. Huggins, George L. Harp Jan 1983

Aquatic Macroinvertebrates Of The Hiatt Prairie Region, Franklin County, Arkansas, Julie A. Huggins, George L. Harp

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

First Report Of Brazilian Free-Tailed Bat Maternity Colonies In Arkansas, David A. Saugey, Darrell R. Heath, Clark Efaw, Gary A. Heidt, Teresa E. Beggs Jan 1983

First Report Of Brazilian Free-Tailed Bat Maternity Colonies In Arkansas, David A. Saugey, Darrell R. Heath, Clark Efaw, Gary A. Heidt, Teresa E. Beggs

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Mosquitofish Production In Monoculture And Polyculture Ponds, Walter R. Robison, Scott H. Newton, Max V. Meisch Jan 1983

Mosquitofish Production In Monoculture And Polyculture Ponds, Walter R. Robison, Scott H. Newton, Max V. Meisch

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Publication Policies And Suggestions For Authors, Academy Editors Jan 1983

Publication Policies And Suggestions For Authors, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Selection Of Scales For Growth Analysis Of Largemouth Bass, Donald C. Jackson, Raj V. Kilambi Jan 1983

Selection Of Scales For Growth Analysis Of Largemouth Bass, Donald C. Jackson, Raj V. Kilambi

Journal of the Arkansas Academy of Science

Scales from four regions of the body of largemouth bass were compared for efficacy in estimating fish length at the time of scale formation and at capture. The scales from above and below the lateral line in the pectoral and caudal peduncle regions yielded intercepts of 64.73, 52.36, 19.77 and 25.81 respectively for the total length-scale radius relationship. These intercept values represent the fish length at the time of scale formation. By the regression of estimated lengths at capture on empirical lengths it was found that the caudal peduncle scales were better suited in predicting fish length.

Go to article

Success Of Wild-Trapped Compared To Captivity-Raised Birds In Restoring Wild Turkey Populations To Northwestern Arkansas, Douglas A. James, L. Glen Fooks, John R. Preston Jan 1983

Success Of Wild-Trapped Compared To Captivity-Raised Birds In Restoring Wild Turkey Populations To Northwestern Arkansas, Douglas A. James, L. Glen Fooks, John R. Preston

Journal of the Arkansas Academy of Science

Reintroduction of wild turkeys into northwestern Arkansas was studied at 10 release sites in the late 1950's. Native birds trapped in southern Arkansas were released at five study areas, and birds from wild Pennsylvania stock reared in captivity were released in five other areas. Although both types of turkeys reproduced, most populations of captivity-raised turkeys decreased sharply whereas all populations of wild-trapped birds exhibited marked increases. Range extension averaged nearly 2.5 miles per year in expanding wild-trapped populations. Captivity-raised birds were comparatively tame and often were found near human habitation. Current expanding turkey populations in the Arkansas Ozarks undoubtedly are …

Go to article

Comparison Of Two Year Classes Of Hybrid Grass Carp And Grass Carp For Aquatic Plant Control, Mike Freeze, Scott Henderson Jan 1983

Comparison Of Two Year Classes Of Hybrid Grass Carp And Grass Carp For Aquatic Plant Control, Mike Freeze, Scott Henderson

Journal of the Arkansas Academy of Science

Two year classes of grass carp and F, hybrids resulting from bighead carp male x grass carp female were compared at various stocking densities for aquatic plant control. One and two year old grass carp exhibited higher survival rates and better growth rates than the same age hybrid grass carp. The presence of grass carp or hybrid grass carp decreased both Secchi disc transparencies and dissolved oxygen values. Grass carp had a greater negative effect upon these measurements because they removed the vegetation quicker than the hybrid grass carp. These apparent detrimental effects on water quality are necessary trade-offs for …

Go to article

Abundance And Seasonal Occurrence Of Psorophora Columbiae In A Northeast Arkansas Ricefield Community, Larry A. Olson, Julia A. Huggins Jan 1983

Abundance And Seasonal Occurrence Of Psorophora Columbiae In A Northeast Arkansas Ricefield Community, Larry A. Olson, Julia A. Huggins

Journal of the Arkansas Academy of Science

Increased population levels of the dark ricefield mosquito, Psorophora columbiae (Dyar and Knab), have been shown to be associated with rice cultivation in Arkansas and several other states. Four standard New Jersey light traps were operated daily between May 30 and October 2 of 1981 and 1982 to determine the relative abundance and seasonal occurrence of this species in NE Arkansas. The effect of trap distance from nearby rice on the number of adult P. columbiae collected was assessed by comparing weekly totals from 2 traps located within 0.9 km of rice fields with totals from 2 traps situated beyond …

Go to article

Arkansas Range Extensions Of The Seminole Bat (Lasiurus Seminolus) And Eastern Big-Eared Bat (Plecotus Rafinesquii) And Additional County Records For The Hoary Bat (Lasiurus Cinereus), Silver-Haired Bat (Lasionycteris Noctivagans) And Evening Bat..., Darrell R. Heath, Gary A. Heidt, David A. Saugey, V. Rick Mcdaniel Jan 1983

Arkansas Range Extensions Of The Seminole Bat (Lasiurus Seminolus) And Eastern Big-Eared Bat (Plecotus Rafinesquii) And Additional County Records For The Hoary Bat (Lasiurus Cinereus), Silver-Haired Bat (Lasionycteris Noctivagans) And Evening Bat..., Darrell R. Heath, Gary A. Heidt, David A. Saugey, V. Rick Mcdaniel

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Blood Levels Of 5-Bromo-2'-Deoxyuridine In Intraperitoneal Infusion For Determination Of Sister Chromatid Exchange Induction Using Hplc, Angelo Turturro, Narendra P. Singh, Johnny Bazare Jr., Ronald W. Hart Jan 1982

Blood Levels Of 5-Bromo-2'-Deoxyuridine In Intraperitoneal Infusion For Determination Of Sister Chromatid Exchange Induction Using Hplc, Angelo Turturro, Narendra P. Singh, Johnny Bazare Jr., Ronald W. Hart

Journal of the Arkansas Academy of Science

A new technique was developed to measure the amount of 5-bromo-2 '-deoxyurdine (BrdUrd), a thymidine analogue, rapidly and conveniently in blood, and it was applied to measure the concentration of BrdUrd during the initiation of a paradigm for the labeling of DNA to measure the induction of sister chromatid exchanges (SCE) by genotoxic agents. Radio labelled BrdUrd was used and blood was drawn from the abdominal aorta in pregnant Sprague-Dawley derived D rats. Using the hplc, the BrdUrd peak was easily identifiable and separable from its metabolites. The BrdUrd level in the blood stabilized in 30 minutes, and a level …

Go to article

Aquatic Macroinvertebrates Of Three Acid Bogs On Crowley's Ridge In Northeast Arkansas, Jerry L. Farris, George L. Harp Jan 1982

Aquatic Macroinvertebrates Of Three Acid Bogs On Crowley's Ridge In Northeast Arkansas, Jerry L. Farris, George L. Harp

Journal of the Arkansas Academy of Science

Qualities and quantities of parameters composing the bog systems in Northeast Arkansas are not entirely reflective of those defining bogs of the northern United States. While pH is restricting to the organisms of each bog studied (4.8-6.9), the major limiting factor is the amount of available water. Three acidophilic bogs with shallow water depths (2-30 cm) yielded a total of 75 aquatic macroinvertebrate taxa. The bog with greatest surface area supported 67 taxa and a mean numerical standing crop of 14 organisms/2 hr sampling period. The bog with the smallest surface area had 13 taxa and a mean standing crop …

Go to article

Effect Of Stocking Density On Channel Catfish Growth, Survival And Food Conservation Efficiency In Cages, Walter R. Robison, Scott H. Newton Jan 1982

Effect Of Stocking Density On Channel Catfish Growth, Survival And Food Conservation Efficiency In Cages, Walter R. Robison, Scott H. Newton

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

66th Annual Meeting, 1982. Program, Academy Editors Jan 1982

66th Annual Meeting, 1982. Program, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Macroinvertebrate Utilization Of Leaf Detritus In A Riffle Of The Illinois River, Arkansas, Arthur V. Brown, Janet P. Ricker Jan 1982

Macroinvertebrate Utilization Of Leaf Detritus In A Riffle Of The Illinois River, Arkansas, Arthur V. Brown, Janet P. Ricker

Journal of the Arkansas Academy of Science

Small (5 g) leaf packs were placed in a shallow riffle area of the Illinois River in western Benton County, Arkansas, and sequentially retrieved after various exposure times during the winter and spring of 1980. Oak leaves (Quercus shumardii) were utilized more rapidly (9.2% remaining after 91 days), followed by oak/sycamore (Q. shumardii/Platanus occidentalis) leaf packs (31.8% remaining after 91 days). Sycamore {P. occidentalis) was the slowest processed type (32.2% remaining after 91 days). The initial colonization by shredders as characteristic of northern U S. streams did not occur in this study. Collector organisms were present in the leaf packs …

Go to article

Proceedings Of The Arkansas Academy Of Science - Volume 36 1982, Academy Editors Jan 1982

Proceedings Of The Arkansas Academy Of Science - Volume 36 1982, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Go to article

Wild Commercial Fishery Of Arkansas, Tommie Crawford, Mike Freeze Jan 1982

Wild Commercial Fishery Of Arkansas, Tommie Crawford, Mike Freeze

Journal of the Arkansas Academy of Science

Arkansas' wild commercial fishery industry was surveyed to evaluate commercial fish products produced within the state. The total wild commercial catch for the period of 1 July 1980 to 30 June 1981 was approximately 8,680,124 kg with a value of $6,245,967. These values represent an increase of approximately 3% from the previous year. The bulk of the commercial harvest was made up of buffalo fishes (Ictiobus spp.), catfishes (Ictalurus spp), gars (Lepisosteus spp.) and carp (Cyprinus carpio). The number of commercial fishermen remained relatively unchanged from 1979-1980, with 3,843 licensed fishermen operating on the state's waterways. The number of licensed …

Go to article

Leaf Detritus Processing In An Ozark Cave Stream, Arthur V. Brown, Mark D. Schram Jan 1982

Leaf Detritus Processing In An Ozark Cave Stream, Arthur V. Brown, Mark D. Schram

Journal of the Arkansas Academy of Science

Detritus processing rates and mechanisms were investigated in an Ozark cave stream using post oak (Quercus stellata) leaf packs. The 5 g leaf packs lost ca. 30% of their dry weight within 84 days, resulting in a calculated K value of 0.05. This was an unexpectedly high rate of utilization. Diversity of invertebrates associated with the leaf packs was very low. Stygobromus ozarkensis (Amphipoda) was the only shredder. The two isopods, Caecidotea stiladactyla and Lirceus sp. were the only collectors observed other than a single species of oligochaete worm. Our data indicated that leaf detritus processing rates are virtually independent …

Go to article

Continuation Of Spider Research In Arkansas: East Central Ozark Mountain Area, Mary L. Beck, Peggy Rae Dorris Jan 1982

Continuation Of Spider Research In Arkansas: East Central Ozark Mountain Area, Mary L. Beck, Peggy Rae Dorris

Journal of the Arkansas Academy of Science

A preliminary study of spiders concentrated in the eastern section of the Ozark Mountain Area was made for the purpose of determining spider fauna in an on-going research effort to elucidate the total spider fauna of the entire state. At present, 247 species of spiders have been reported.

Go to article

First Prev Next Last