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Articles 1 - 30 of 35
Full-Text Articles in Life Sciences
Aquatic Macroinvertebrates Of Three Acid Bogs On Crowley's Ridge In Northeast Arkansas, Jerry L. Farris, George L. Harp
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 …
Leaf Processing In A Slough Of An Ozark Stream, Don F. Petty, Arthur V. Brown
Leaf Processing In A Slough Of An Ozark Stream, Don F. Petty, Arthur V. Brown
Journal of the Arkansas Academy of Science
Processing of sugar maple (Acer saccharum), black oak (Quercus velutina), and American sycamore (Platanus occidentalis) was investigated in a slough of the Illinois River, Benton County, Arkansas, using 5-gram packs in wire baskets. Oak and sycamore showed similar degradation rates, while maple was processed much faster. All processing rates were strongly retarded during a period of siltation. Chironomid larvae were the dominant organisms associated with the packs and their numbers were depressed by the silt influx. Shredders were notably few in number as compared with studies from the northwestern United States.
Water Quality And Benthic Invertebrate Communities In Lake Greeson Tailwater, Stephen B. Smith
Water Quality And Benthic Invertebrate Communities In Lake Greeson Tailwater, Stephen B. Smith
Journal of the Arkansas Academy of Science
The Little Missouri River below Lake Greeson, Arkansas, was sampled for water quality and benthos during summer 1979. The hydropower turbine water intakes, 20 m below the lake surface, released hypolimnetic water into the tailwater. Downstream water temperatures, total organic matter, and total inorganic matter varied considerably and benthic invertebrate communities immediately below the dam were stressed by waters released for power generation. Detrimental effects from altered temperature and flow regimes had decreased by 16.1 km downstream, where invertebrate communities were typical of less stressed environments.
Wild Commercial Fishery Of Arkansas, Tommie Crawford, Mike Freeze
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 …
Soil Traversing Arthropod Populations As Sampled By Pitfall Traps In Sunflower And Three Adjacent Habitats In Northeast Arkansas, Linda A. Lee, Harvey E. Barton
Soil Traversing Arthropod Populations As Sampled By Pitfall Traps In Sunflower And Three Adjacent Habitats In Northeast Arkansas, Linda A. Lee, Harvey E. Barton
Journal of the Arkansas Academy of Science
Soil traversing arthropod populations were sampled by pitfall traps in sunflower (Helianthus spp.) and three adjacent habitats during the months of July, August and September of 1980 and May, June, July and August of 1981. In1980, four varieties of sunflower (Ellar, Hybrid 670, 891 and S-345) were planted. A single variety of sunflower (Ellar) was planted in1981. The three adjacent habitats in both 1980 and 1981 were a pine stand, grass border and fence row. Of 1,748 specimens collected in 1980, 17 orders and 48 families were represented. Four orders comprised 78% of the total catch: Hymenoptera (45%), Acari (17%), …
Endemic Flora And Fauna Of Arkansas, Henry W. Robison, Kenneth L. Smith
Endemic Flora And Fauna Of Arkansas, Henry W. Robison, Kenneth L. Smith
Journal of the Arkansas Academy of Science
Arkansas has an amazing diversity of plants and animals contained within its political boundaries. Forty-seven taxa are reported as Arkansas endemics, including seven plants, thirteen crustaceans (two amphipods, three isopods, eight crayfishes), nine insects (one mayfly, one caddisfly, three stoneflies, four beetles), ten snails, six fishes, and two salamanders.
Effects Of Various Treatments On The Distribution In Rats Of Immune Complexes Containing Antigens Of Mulv Leukemia Virus, Wail M. Siag, Jean Matchett, Joe M. Jones
Effects Of Various Treatments On The Distribution In Rats Of Immune Complexes Containing Antigens Of Mulv Leukemia Virus, Wail M. Siag, Jean Matchett, Joe M. Jones
Journal of the Arkansas Academy of Science
Immune complexes (IC) containing antigens of MuLV (¹²⁵lp30-anti-p30 or ¹²⁵lp70-anti-gp70) and formed in vitro or in vivo were sequestered primarily in the spleen. Treatments of rats with trypan blue, known to inhibit the reticuloendothelial system (RES) and diethylstilbestrol (DES), known to stimulate the RES, resulted in slight but not significant reduction of uptake of IC by the spleen. Splenectomy did not increase sequestration of IC by the liver nor did it change the distribution of IC in other tissues. Protein A, a cell wall protein of Staphylococcus aureus, when injected with IC resulted in a 10-fold reduction of uptake of …
Polyculture Of Giant Malaysian Prawns (Macrobrachium Rosenbergii) And Fathead Minnows (Pimephales Promelas), Tommie Crawford, Mike Freeze
Polyculture Of Giant Malaysian Prawns (Macrobrachium Rosenbergii) And Fathead Minnows (Pimephales Promelas), Tommie Crawford, Mike Freeze
Journal of the Arkansas Academy of Science
No abstract provided.
Effect Of Stocking Density On Channel Catfish Growth, Survival And Food Conservation Efficiency In Cages, Walter R. Robison, Scott H. Newton
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.
Analysis Of Regurgutated Short-Eared Owl (Asio Flammeus) Pellets From The Roth Prairie, Arkansas County Arkansas, Ronald A. Smith, Earl L. Hanebrink
Analysis Of Regurgutated Short-Eared Owl (Asio Flammeus) Pellets From The Roth Prairie, Arkansas County Arkansas, Ronald A. Smith, Earl L. Hanebrink
Journal of the Arkansas Academy of Science
No abstract provided.
Macroinvertebrate Utilization Of Leaf Detritus In A Riffle Of The Illinois River, Arkansas, Arthur V. Brown, Janet P. Ricker
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 …
Reported Animal Rabies In Arkansas: 1950-1981, Gary A. Heidt
Reported Animal Rabies In Arkansas: 1950-1981, Gary A. Heidt
Journal of the Arkansas Academy of Science
Reported animal rabies in Arkansas is reviewed for the years 1950-81 . Total cases ranged from 44 in 1969 to 332 in 1979, with a mean of 154. Domestic animals accounted for 72.5% of the total cases until 1961-63 and then declined to 15.8% from 1964-81. This switch from domestic to wildlife rabies corresponded to a similar trend in nationally reported rabies and was probably due to increased public awareness and the vaccination of domestic dogs and cats. Over the 31 year period a total of 18 species of mammals has been implicated in reported rabies (individual species of foxes, …
Continuation Of Spider Research In Arkansas: East Central Ozark Mountain Area, Mary L. Beck, Peggy Rae Dorris
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.
Physiological Studies Of Heat Stress Acclimation During A Specific Exercise Regimen, Leland F. Morgans, Alan M. Johnson
Physiological Studies Of Heat Stress Acclimation During A Specific Exercise Regimen, Leland F. Morgans, Alan M. Johnson
Journal of the Arkansas Academy of Science
Eleven subjects were used to determine if the exercise regimen of racquetball could be used as a heat stress acclimator. Core temperature, skin temperature, sweat production, and weight loss were recorded during a racquetball match. Skin and core temperatures were determined by using thermistors. Sweat was collected with modified stress electrodes. Weight loss was recorded by comparing nude weights at the beginning and end of a match. The results indicated that an hour of strenuous racquetball play caused a significant increase in core temperature with subsequent sweating which resulted in a significant decrease in skin temperature and weight loss. The …
Invertebrate Fauna Of Devils Den, A Sandstone Cave In Northwestern Arkansas, Stewart B. Peck, James H. Peck
Invertebrate Fauna Of Devils Den, A Sandstone Cave In Northwestern Arkansas, Stewart B. Peck, James H. Peck
Journal of the Arkansas Academy of Science
The same invertebrate fauna of 17 species was found in Devils Den Cave, Washington County, Arkansas, in 1969 and 1979. The fauna consists of 1 trogloxene, 14 troglophiles, and 2 troglobites, a spider, Porrhomma cavernicolum, and a collembolan, Pseudosinella dubia. Devils Den Cave has a well developed cavernicolous fauna, although it is in sandstone which generally supports a poor cave adapted fauna. The troglobites probably evolved in the vicinity of northwestern Arkansas in limestone caves or in deep forest soils of the Ozark region. They then dispersed overland, perhaps as recently as the late Wisconsinan, to occupy this sandstone cave.
Warmwater Fish Community Of A Cool Tailwater In Arkansas, Richard A. Frietsche
Warmwater Fish Community Of A Cool Tailwater In Arkansas, Richard A. Frietsche
Journal of the Arkansas Academy of Science
A diverse warmwater fish community has persisted in the Lake Greeson tailwater, despite hydropower releases of cold hypolimnetic water. Forty-eight species of fish were collected by electrofishing in the upper 16.1 km of the tailwater. Hydropower releases have reduced the abundance of some of the warmwater sport fish in the upper tailwater, and their populations are probably maintained in part by recruitment from downstream. Angling effort has been diverted from the warmwater sport fish populations to a put-and-take trout fishery.
Water Chemistry Of Farm Ponds In Arkansas, Stanley L. Chapman, D. Leroy Gray, Dennis W. King
Water Chemistry Of Farm Ponds In Arkansas, Stanley L. Chapman, D. Leroy Gray, Dennis W. King
Journal of the Arkansas Academy of Science
No abstract provided.
Effects Of Water Released From Stratified And Unstratified Reservoirs On The Downstream Water Quality, Stephen B. Smith
Effects Of Water Released From Stratified And Unstratified Reservoirs On The Downstream Water Quality, Stephen B. Smith
Journal of the Arkansas Academy of Science
Water quality samples were collected from the Little River system in Pine Creek Lake, Oklahoma, and Gillham Lake, Arkansas, and their associated tailwaters during the winter (reservoirs unstratified) and summer (reservoirs stratified) of 1980. Downstream water quality was not affected by reservoir water releases while the reservoirs were unstratified. When the reservoirs were stratified water quality in the tailwaters was dependent on the release depth of the water. The practice of flushing out a tailwater following an extended low flow period should be examined on a site by site basis. Anoxic water released from a reservoir may contain high amounts …
Aquatic Macroinvertebrate Taxa Present In Two Ozark Springs In Randolph County, Arkansas, G. Randall Guntharp, George L. Harp
Aquatic Macroinvertebrate Taxa Present In Two Ozark Springs In Randolph County, Arkansas, G. Randall Guntharp, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Dark Repair Of Lethal Damage Induced In A Hybrid Mammalian Tissue Culture Cell Line By Ultraviolet Light, Robin Haetten, Margaret Mcguinness, H. Gaston Griggs
Dark Repair Of Lethal Damage Induced In A Hybrid Mammalian Tissue Culture Cell Line By Ultraviolet Light, Robin Haetten, Margaret Mcguinness, H. Gaston Griggs
Journal of the Arkansas Academy of Science
No abstract provided.
Protective Immune Responses Of Rabbits To Ascaris Suum Larval Antigens, Lawrence W. Hinck, Myra B. Finch
Protective Immune Responses Of Rabbits To Ascaris Suum Larval Antigens, Lawrence W. Hinck, Myra B. Finch
Journal of the Arkansas Academy of Science
No abstract provided.
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
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 …
Status Of The Small-Footed Bat, Myotis Leibii Leibii, In The Southern Ozarks, V. Rick Mcdaniel, Michael J. Harvey, Renn Tumlison, Ken N. Paige
Status Of The Small-Footed Bat, Myotis Leibii Leibii, In The Southern Ozarks, V. Rick Mcdaniel, Michael J. Harvey, Renn Tumlison, Ken N. Paige
Journal of the Arkansas Academy of Science
No abstract provided.
Early Stages Of Prairie Restoration On A 1.5 Hectare Field In Faulkner County, Arkansas, Robert D. Wright, Donald E. Culwell
Early Stages Of Prairie Restoration On A 1.5 Hectare Field In Faulkner County, Arkansas, Robert D. Wright, Donald E. Culwell
Journal of the Arkansas Academy of Science
A plot of land on the University of Central Arkansas campus has been permanently designated as a Nature Reserve which is to remain much as it is with woods and open, grassy fields for class use and other educational purposes. The 1.5 hectare open field is a particularly good site for prairie restoration, since the area has not been under cultivation in recent time. Andropogon gerardi, A. scoparius, Sorghastrum avenaceum, Panicum virgatum, Liatris pycnostachya, Eryngium yuccifolium, Rudbeckia hirta, and Helianthus sp. are examples of plants naturally occurring here with some frequency. A number of other plants typical of prairie remnants …
Host Reactions And Physical Properties Of Four Isolates Of Tobacco Ringspot Virus, Lisa Smith, James M. Mcguire
Host Reactions And Physical Properties Of Four Isolates Of Tobacco Ringspot Virus, Lisa Smith, James M. Mcguire
Journal of the Arkansas Academy of Science
No abstract provided.
Two Year Comparison Of The Winter Food Habits Of Mink (Mustela Vison) From Deltaic Northeast Arkansas, Ronald A. Smith, V. Rick Mcdaniel
Two Year Comparison Of The Winter Food Habits Of Mink (Mustela Vison) From Deltaic Northeast Arkansas, Ronald A. Smith, V. Rick Mcdaniel
Journal of the Arkansas Academy of Science
No abstract provided.
Overwintering, Feeding Study Of Channel Catfish In Cages, Walter R. Robison
Overwintering, Feeding Study Of Channel Catfish In Cages, Walter R. Robison
Journal of the Arkansas Academy of Science
No abstract provided.
New Records For Troglobitic Asellids From Northwest Arkansas, Mark D. Schram
New Records For Troglobitic Asellids From Northwest Arkansas, Mark D. Schram
Journal of the Arkansas Academy of Science
No abstract provided.
River Otter In Arkansas: Ii. Indications Of A Beaver-Facilitated Commensal Relationship, C. Renn Tumlison, Mark R. Karnes, Anthony W. King
River Otter In Arkansas: Ii. Indications Of A Beaver-Facilitated Commensal Relationship, C. Renn Tumlison, Mark R. Karnes, Anthony W. King
Journal of the Arkansas Academy of Science
Dam building activities of beaver (Castor canadensis) create ponds that apparently augment habitat available to otter (Lutra canadensis). This paper considers possible effects of beaver activity and pond formation on distribution and populations of otter in Arkansas. Literature synthesis and analysis of harvest records were used to investigate the suspected relationship.
Selection Of Breeding Ponds By The Ringed Salamander, Ambystoma Annulatum, Peter P. Brussock, Arthur V. Brown
Selection Of Breeding Ponds By The Ringed Salamander, Ambystoma Annulatum, Peter P. Brussock, Arthur V. Brown
Journal of the Arkansas Academy of Science
No abstract provided.