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Articles 1 - 29 of 29
Full-Text Articles in Life Sciences
Assessment Of The Modern Fish Assemblage In Mound Pond (Lonoke County) And Comparison With The Archeological Record, A. V. Fernando, M. A. Eggleton
Assessment Of The Modern Fish Assemblage In Mound Pond (Lonoke County) And Comparison With The Archeological Record, A. V. Fernando, M. A. Eggleton
Journal of the Arkansas Academy of Science
Mound Pound is a 56-ha oxbow lake of the Arkansas River. The lake has been disconnected from the Arkansas River main channel for over 2,500 years. The lake lies adjacent to the Toltec Mounds Archeological State Park, which contains the Toltec Mound Complex (3LN42). In October 2012, a multiple-gear sampling of the fish assemblage in Mound Pond was conducted using boat-mounted electrofishing, mini-fyke nets, and experimental gill nets. Across all gears, 501 fish specimens were collected and identified to species. Percent Similarity Index (PSI) and Shannon-Weiner Diversity Index (H') values were calculated using data from this survey and a previous …
Microsatellite Analysis Of Trophy Largemouth Bass From Arkansas Reservoirs, K. A. Lamothe, Ronald L. Johnson
Microsatellite Analysis Of Trophy Largemouth Bass From Arkansas Reservoirs, K. A. Lamothe, Ronald L. Johnson
Journal of the Arkansas Academy of Science
The Arkansas Game and Fish Commission (AGFC) has introduced Florida largemouth bass (FLMB; Micropterus salmoides floridanus) to water bodies historically containing the northern largemouth bass (NLMB; Micropterus salmoides salmoides) subspecies since the late 1970s in an attempt to produce a trophy LMB fishery. Since 2006, the AGFC has been biannually sampling reservoirs stocked with FLMB to determine levels of admixture. Here, total sampling efforts between 2006 and 2011 have been combined, and LMB heavier than 2,268 g (5 lb) were analyzed in an effort to investigate distribution of bass by their genetic composition designated as trophy LMB by the AGFC. …
Relationship Between Land-Use And Water Quality In Spring-Fed Streams Of The Ozark National Forest, A. Smartt, S. Ganguly, M. A. Evans-White, B. E. Haggard
Relationship Between Land-Use And Water Quality In Spring-Fed Streams Of The Ozark National Forest, A. Smartt, S. Ganguly, M. A. Evans-White, B. E. Haggard
Journal of the Arkansas Academy of Science
Spring-fed streams are abundant in karst topographic regions such as the Ozarks, providing an important and valuable water resource. Many of these spring-fed streams presently receive agriculture runoff, but few studies have examined the impacts of this runoff on water quality. We examined water quality in Ozark spring-fed streams surrounded by either agricultural (N=3) or primarily forested land (N=3) in the riparian zone. We hypothesized that agricultural sites would have greater dissolved nutrient concentrations and conductivity than forested sites and that water quality would fluctuate with distance from the spring source. Conductivity (p
Status Of Tridens X Oklahomensis (Poaceae) And Updated Treatment Of The Genus Tridens In Arkansas, C. T. Witsell, Brent Baker
Status Of Tridens X Oklahomensis (Poaceae) And Updated Treatment Of The Genus Tridens In Arkansas, C. T. Witsell, Brent Baker
Journal of the Arkansas Academy of Science
We report the documentation of Tridens × oklahomensis, the naturally-occurring interspecific hybrid between Tridens flavus and Tridens strictus, from Arkansas. Collections of this uncommon hybrid were made from open, often disturbed habitat in 12 counties and observations without collections were made in 3 additional counties. All records occurred in areas with populations of both parent species. A summary of occupied site characteristics and a map of the known range within Arkansas are presented along with photographs illustrating T. × oklahomensis in comparison with both parent species. Keys, notes on habitat, and updated range maps are also presented for all known …
Observations Of The Behavior Of The Giant Prairie Robberfly, Microstylum Morosum Loew (Diptera: Asilidae) At Terre Noire Natural Area, Clark County, Arkansas, R. Tumlison, K. Benjamin
Observations Of The Behavior Of The Giant Prairie Robberfly, Microstylum Morosum Loew (Diptera: Asilidae) At Terre Noire Natural Area, Clark County, Arkansas, R. Tumlison, K. Benjamin
Journal of the Arkansas Academy of Science
No abstract provided.
Reappearance Of The Eastern Collared Lizard (Crotaphytus Collaris) Along Shorelines Of Bull Shoals Lake In Northern Arkansas, J. L. Rheubert, S. E. Trauth
Reappearance Of The Eastern Collared Lizard (Crotaphytus Collaris) Along Shorelines Of Bull Shoals Lake In Northern Arkansas, J. L. Rheubert, S. E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.
Acute Effects Of Exercise On Cognitive Performances Of Older Adults, R. Pennington, S. Hanna
Acute Effects Of Exercise On Cognitive Performances Of Older Adults, R. Pennington, S. Hanna
Journal of the Arkansas Academy of Science
Accelerating rates of structural decline become evident during the third and fourth decades of human life, with disproportionate degeneration occurring in the frontal, parietal, and temporal brain lobes. As the structure of the brain declines, a broad array of cognitive processes involving memory, decision making, and selective attention are reduced as well (Raz 2000, Park et al. 2001). Cardiovascular exercise has been associated with improved cognitive functioning in aging humans, suggesting that increased vascular supply enhances availability of oxygen, nutrients, and other physical entities to nourish the brain. Previous experimentation on older adults revealed significant positive effects of exercise on …
Eastern Spotted Skunk (Spilogale Putorius) At The Ouachita Mountains Biological Station, Polk County, Arkansas, L. M. Hardy
Eastern Spotted Skunk (Spilogale Putorius) At The Ouachita Mountains Biological Station, Polk County, Arkansas, L. M. Hardy
Journal of the Arkansas Academy of Science
A population of the eastern spotted skunk (Spilogale putorius) has been discovered at the Ouachita Mountains Biological Station in the Ouachita Mountains of Polk County, Arkansas. In 2010 a motion camera recorded a very brief infrared video of an animal that, after much study and conversation with other biologists, was concluded to be an eastern spotted skunk. Since that time the identification has been confirmed with at least 6 still photographs and one additional video that have been obtained from 2 other locations on the station. At least 2 or 3 individuals are present. All were photographed at night in …
Distribution Of Yellow Grub (Clinostomum Marginatum) Metacercariae In Black Bass (Micropterus Spp.) From Arkansas Ozark And Ouachita Reservoir Lakes, James J. Daly Sr.
Distribution Of Yellow Grub (Clinostomum Marginatum) Metacercariae In Black Bass (Micropterus Spp.) From Arkansas Ozark And Ouachita Reservoir Lakes, James J. Daly Sr.
Journal of the Arkansas Academy of Science
No abstract provided.
Millipeds (Arthropoda: Diplopoda) Of The Ark - La - Tex. Vi. New Geographic Distributional Records From Select Counties Of Arkansas, C. T. Mcallister, H. W. Robison, L. C. Thompson, M. B. Connior
Millipeds (Arthropoda: Diplopoda) Of The Ark - La - Tex. Vi. New Geographic Distributional Records From Select Counties Of Arkansas, C. T. Mcallister, H. W. Robison, L. C. Thompson, M. B. Connior
Journal of the Arkansas Academy of Science
We continue to report, in the sixth of a series of papers, new geographic records for millipeds of the state, including noteworthy records for some taxa collected from Crowley’s Ridge in eastern Arkansas. This contribution documents 47 new co. records and includes records for 19 species within 9 families and 5 orders. More uncommon millipeds found included Okliulus carpenteri (Parajulidae), Eurymerodesmus newtonus (Eurymerodesmidae), Pseudopolydesmus minor (Polydesmidae) and undescribed species of Ethojulus (Parajulidae) and Nannaria (Xystodesmidae). Undoubtedly, additional records will be reported in the future as several gaps in the distribution of Arkansas millipeds remain.
Scarab Beetles (Coleoptera: Scarabaeidae) In The Dung Of Native Arkansas Mammals, J. B. Kelley, J. L. Hunt, M. B. Connior
Scarab Beetles (Coleoptera: Scarabaeidae) In The Dung Of Native Arkansas Mammals, J. B. Kelley, J. L. Hunt, M. B. Connior
Journal of the Arkansas Academy of Science
Dung beetles are important ecological components of natural ecosystems. One primary activity is the fragmentation and recycling of animal dung. Little is known about the ecological impact of beetles associated with the dung of mammals native to Arkansas. We surveyed the dung of native mammals within Arkansas to determine the species and distributional patterns associated with dung. We searched and collected beetles in situ from the dung or nests of native mammalian species within Arkansas. We also set simple pitfall traps using dung of various native Arkansas mammals as bait. Most of the beetles collected were common dung beetles. However, …
Distribution, Conservation And Current Status Of Three Endemic Heterosternuta (Coleoptera: Dytiscidae: Hydroporinae) In Arkansas, S. D. Longing, P. A. Bacon, George L. Harp
Distribution, Conservation And Current Status Of Three Endemic Heterosternuta (Coleoptera: Dytiscidae: Hydroporinae) In Arkansas, S. D. Longing, P. A. Bacon, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Distribution Of Soil Density At A Bottomland Hardwood Forest Wetland Restoration, Chicot County, Arkansas, B. E. Sleeper, Robert L. Ficklin
Distribution Of Soil Density At A Bottomland Hardwood Forest Wetland Restoration, Chicot County, Arkansas, B. E. Sleeper, Robert L. Ficklin
Journal of the Arkansas Academy of Science
Bottomland hardwood forest (BLHF) soils provide a myriad of ecosystem services, yet much information is lacking with respect to how soil physical properties influence biogeochemical cycling along topographic gradients. Current patterns of vegetation at a 149ha wetland restoration site in Chicot County, Arkansas, suggest the presence of ecologically significant variation in soil properties within the Perry Clay soil series. A study was initiated in the Lower Mississippi Alluvial Valley (LMAV) to map soil bulk density and texture as well as to identify the interrelationships between soil physical properties, soil organic carbon, and total nitrogen. A random grid was used to …
New Host Records For The Fish Leech Cystobranchus Klemmi (Hirudinida: Piscicolidae) On Cyprinid Fishes From Arkansas And Oklahoma, Dennis J. Richardson, R. Tumlison, J. W. Allen Jr., W. E. Moser, C. T. Mcallister, S. E. Trauth, H. W. Robison
New Host Records For The Fish Leech Cystobranchus Klemmi (Hirudinida: Piscicolidae) On Cyprinid Fishes From Arkansas And Oklahoma, Dennis J. Richardson, R. Tumlison, J. W. Allen Jr., W. E. Moser, C. T. Mcallister, S. E. Trauth, H. W. Robison
Journal of the Arkansas Academy of Science
No abstract provided.
Perch-Type Characteristics Of Overwintering Red-Tailed Hawks (Buteo Jamaicensis) And American Kestrels (Falco Sparverius), A. J. Worm, M. M. Bobowski, Thomas S. Risch
Perch-Type Characteristics Of Overwintering Red-Tailed Hawks (Buteo Jamaicensis) And American Kestrels (Falco Sparverius), A. J. Worm, M. M. Bobowski, Thomas S. Risch
Journal of the Arkansas Academy of Science
Red-tailed Hawks (Buteo jamaicensis) and American Kestrels (Falco sparverius) are primarily sitand-wait predators that rely on perches to forage most efficiently. Overwintering Red-tailed Hawks and American Kestrels use available perches (e.g., utility poles and wires, trees, fences, gates, etc.) to hunt for prey items in agricultural fields in northeast Arkansas. Observations were made from December 2011-March 2012 and November 2012-March 2013 in three representative cover-types (short rice stubble, soybean stubble, and fallow areas including roadsides) to determine which perch-types were used by Red-tailed Hawks and American Kestrels. Utility pole crossbeams at an average height of 6.3 m were the main …
Initial Survey On Black-Spot Disease (Digenea: Strigeoidea: Diplostomidae) In Select Arkansas Fishes, C. T. Mcallister, R. Tumlison, H. W. Robison, S. E. Trauth
Initial Survey On Black-Spot Disease (Digenea: Strigeoidea: Diplostomidae) In Select Arkansas Fishes, C. T. Mcallister, R. Tumlison, H. W. Robison, S. E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.
Synthesis, Characterization, And Properties Of Mononuclear And Dinuclear Ruthenium(Ii) Complexes Containing Phenanthroline And Chlorophenanthroline, Anwar A. Bhuiyan, X. Du
Synthesis, Characterization, And Properties Of Mononuclear And Dinuclear Ruthenium(Ii) Complexes Containing Phenanthroline And Chlorophenanthroline, Anwar A. Bhuiyan, X. Du
Journal of the Arkansas Academy of Science
The study of photophysical and photochemical properties of ruthenium complexes is of great interest for fundamental practical reasons. Ruthenium complexes have been investigated for use in artificial photosynthesis. This paper deals with the synthesis and spectroscopic investigation of custom-designed ruthenium complexes containing phenanthroline and chloro-phenanthroline ligands. These complexes maybe useful for biological electron-transfer studies. The heteroleptic ruthenium monomer complex Ru(phen)2(Cl-phen) (where phen = 1,10-phenanthroline and Cl-phen=5-chloro-1,10-phenanthroline) was prepared in a two-step procedure previously developed in our laboratory. This monomer complex was used to prepare the ruthenium homometallic dimer complex, (phen)2Ru(phen-phen)Ru(phen)2, by utilizing the Ni-catalyzed coupling reaction. Both complexes were purified …
Valence-Length Correlations For Chemical Bonds From Atomic Orbital Exponents, F. D. Hardcastle
Valence-Length Correlations For Chemical Bonds From Atomic Orbital Exponents, F. D. Hardcastle
Journal of the Arkansas Academy of Science
Pauling’s empirical bond valence-length correlation has proven valuable because it offers a quick and convenient way of checking and evaluating molecular structures and determining oxidation states from measured bond lengths. In this study, a simplified quantum-mechanical approach was used to derive Pauling’s empirical bond valence-length relationship by considering overlap of hydrogen-like orbitals. An expression for the b “empirical” fitting parameter was derived in terms of atomic-orbital exponents. A new set of orbital exponents is presented using published atomic/covalent radii and a continuous function for the effective principal quantum. The b parameters calculated from the orbital exponents are consistent with bond …
Genus Reuteria (Hemiptera: Miridae) With Five Species New For Arkansas, U.S.A., Stephen W. Chordas Iii, C. Renn Tumlison, K. Benjamin
Genus Reuteria (Hemiptera: Miridae) With Five Species New For Arkansas, U.S.A., Stephen W. Chordas Iii, C. Renn Tumlison, K. Benjamin
Journal of the Arkansas Academy of Science
No abstract provided.
Ectoparasites Of Sciurid Rodents In Arkansas, Including New State Records For Neohaematopinus Spp. (Phthiraptera: Anoplura: Polyplacidae), C. T. Mcallister, M. B. Connior, L. A. Durden
Ectoparasites Of Sciurid Rodents In Arkansas, Including New State Records For Neohaematopinus Spp. (Phthiraptera: Anoplura: Polyplacidae), C. T. Mcallister, M. B. Connior, L. A. Durden
Journal of the Arkansas Academy of Science
No abstract provided.
New Distributional Records And Natural History Notes On Selected Fishes From Arkansas, Henry W. Robison, D. A. Neely, U. Thomas, Ken E. Shirley, J. K. Whalen, Chris T. Mcallister
New Distributional Records And Natural History Notes On Selected Fishes From Arkansas, Henry W. Robison, D. A. Neely, U. Thomas, Ken E. Shirley, J. K. Whalen, Chris T. Mcallister
Journal of the Arkansas Academy of Science
This report documents new records on the distribution of selected fishes from Arkansas and provides notes on their natural history. We document new geographic records for 21 species within 8 families in 12 counties of the state. Most importantly we have included new records for fishes ranked S1, S2 or S3 in the state by NatureServe and several Species of Special Concern by the Arkansas Game and Fish Commission (AGFC). Additional collections of fishes in the state will undoubtedly provide more records especially with the use of electroshocking devices as has been shown herein.
Effects Of Bridge Design On Placement And Shape Of Cliff Swallow (Petrochelidon Pyrrhonota) Nests In Southern Arkansas, R. Tumlison, K. Kendall
Effects Of Bridge Design On Placement And Shape Of Cliff Swallow (Petrochelidon Pyrrhonota) Nests In Southern Arkansas, R. Tumlison, K. Kendall
Journal of the Arkansas Academy of Science
No abstract provided.
Arkansas Lepidoptera Survey: A Preliminary Check List Of Arkansas Species, E. C. Lovely, J. K. Ettman
Arkansas Lepidoptera Survey: A Preliminary Check List Of Arkansas Species, E. C. Lovely, J. K. Ettman
Journal of the Arkansas Academy of Science
The mission of the Arkansas Lepidoptera Survey is to enhance the fundamental knowledge of butterflies, skippers, and moths in Arkansas. To achieve this mission, its objectives include developing a reference collection of Arkansas Lepidoptera and maintaining a current check list of present, historical and accidental species in Arkansas. The following list includes 1360 species representing 57 families. It was compiled from original field collecting, literature review, and analysis of museum specimens. The Arkansas Lepidoptera Survey established a reference collection of Arkansas butterflies, skippers and moths located in McEver Hall on the Arkansas Tech University campus. This collection currently contains 567 …
Status Of An Exotic Salamander, Desmognathus Monticola (Caudata: Plethodontidae), And Discovery Of An Introduced Population Of Cottus Immaculatus (Perciformes: Cottidae) In Arkansas, M. B. Connior, C. T. Mcallister, H. W. Robison, Charles R. Bursey
Status Of An Exotic Salamander, Desmognathus Monticola (Caudata: Plethodontidae), And Discovery Of An Introduced Population Of Cottus Immaculatus (Perciformes: Cottidae) In Arkansas, M. B. Connior, C. T. Mcallister, H. W. Robison, Charles R. Bursey
Journal of the Arkansas Academy of Science
No abstract provided.
First Record Of The Ornate Box Turtle (Terrapene Ornata Ornata) From The Grand Prairie Ecoregion Since 1981, C. T. Witsell, Michael D. Warriner
First Record Of The Ornate Box Turtle (Terrapene Ornata Ornata) From The Grand Prairie Ecoregion Since 1981, C. T. Witsell, Michael D. Warriner
Journal of the Arkansas Academy of Science
No abstract provided.
Deriving Biomass Models For Small-Diameter Loblolly Pine On The Crossett Experimental Forest, K. M. Mcelligot, Don C. Bragg
Deriving Biomass Models For Small-Diameter Loblolly Pine On The Crossett Experimental Forest, K. M. Mcelligot, Don C. Bragg
Journal of the Arkansas Academy of Science
Foresters and landowners have a growing interest in carbon sequestration and cellulosic biofuels in southern pine forests, and hence need to be able to accurately predict them. To this end, we derived a set of aboveground biomass models using data from 62 small-diameter loblolly pines (Pinus taeda) sampled on the Crossett Experimental Forest in southeastern Arkansas. Of the 25 equations initially evaluated, we chose 17 that best fit our dataset and compared them using a suite of conventional test statistics, including pseudo-R2 , root mean squared error (RMSE), and bias. Because most of the 17 models varied little in pseudoR …
Comparing Aboveground Biomass Predictions For An Uneven-Aged Pine-Dominated Stand Using Local, Regional, And National Models, Don C. Bragg, K. M. Mcelligott
Comparing Aboveground Biomass Predictions For An Uneven-Aged Pine-Dominated Stand Using Local, Regional, And National Models, Don C. Bragg, K. M. Mcelligott
Journal of the Arkansas Academy of Science
Sequestration by Arkansas forests removes carbon dioxide from the atmosphere, storing this carbon in biomass that fills a number of critical ecological and socioeconomic functions. We need a better understanding of the contribution of forests to the carbon cycle, including the accurate quantification of tree biomass. Models have long been developed to predict aboveground live tree biomass, but few of these have been derived from Arkansas forests. Since there is geographic variability in the growth and yield of pine as a function of genetics, site conditions, growth rate, stand stocking, and other factors, we decided to compare aboveground tree biomass …
Additional Vertebrate Records And Natural History Notes From Arkansas, M. B. Connior, C. Renn Tumlison, H. W. Robison, J. S. Placyk Jr., C. T. Mcallister
Additional Vertebrate Records And Natural History Notes From Arkansas, M. B. Connior, C. Renn Tumlison, H. W. Robison, J. S. Placyk Jr., C. T. Mcallister
Journal of the Arkansas Academy of Science
Although vertebrates are a commonly studied group of animals, the distribution and natural history of many species within Arkansas is still not well understood or documented. However, recently several new distribution and natural history notes have been published in a continuing series regarding Arkansas’s vertebrates (e.g. Tumlison and Robison 2010; Connior et al. 2011, Connior et al. 2012). Thus, we continue to augment current literature with new records of distribution and provide notes on the natural history of selected vertebrates from Arkansas. All voucher specimens (physical or photographic) are deposited in the vertebrate collections at either Arkansas State University (ASUMZ), …
New Records Of The Eastern Small-Footed Bat (Myotis Leibii) In Arkansas, D. Blake Sasse, Thomas S. Risch, David A. Saugey, Michael J. Harvey, J. D. Wilhide, R. K. Redman, J. J. Jackson, T. Klotz, P. R. Moore
New Records Of The Eastern Small-Footed Bat (Myotis Leibii) In Arkansas, D. Blake Sasse, Thomas S. Risch, David A. Saugey, Michael J. Harvey, J. D. Wilhide, R. K. Redman, J. J. Jackson, T. Klotz, P. R. Moore
Journal of the Arkansas Academy of Science
No abstract provided.