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Energy Content Of Seeds Of Palmer’S Pigweed (Amaranthus Palmeri) In The Diet Of Scaled Quail (Callipepla Squamata) In Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Isaac C. Castillo, Paige E. Eddington, Faith A. Johnson, Tyneshia L. Kilgore, Jacob H. Courson
Energy Content Of Seeds Of Palmer’S Pigweed (Amaranthus Palmeri) In The Diet Of Scaled Quail (Callipepla Squamata) In Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Isaac C. Castillo, Paige E. Eddington, Faith A. Johnson, Tyneshia L. Kilgore, Jacob H. Courson
Journal of the Arkansas Academy of Science
Palmer’s pigweed (Amaranthus palmeri) is a common grassland plant that occurs across much of North America. It is often considered a weed but is an important source of food for many game birds. We analyzed the energy content of seeds of Palmer’s pigweed obtained from the crops of scaled quail (Callipepla squamata) collected from plains-mesa sand-scrub habitat in Eddy and Lea counties, New Mexico. Seeds were dried for 48 hours at 60°C to remove moisture and then analyzed for gross caloric value (i.e., energy content) in an oxygen bomb calorimeter. Energy content of seeds of Palmer’s …
New County Records Of Three Baptisia Species In Arkansas, With An Updated Distribution Map, Leah C. Crenshaw, Caralee A. Shepard, Natalie E. Phelan, Maureen R. Mcclung, Matthew D. Moran
New County Records Of Three Baptisia Species In Arkansas, With An Updated Distribution Map, Leah C. Crenshaw, Caralee A. Shepard, Natalie E. Phelan, Maureen R. Mcclung, Matthew D. Moran
Journal of the Arkansas Academy of Science
New county records of three Baptisia species are reported in Arkansas, together with an updated distribution map.
Energy Content Of Seeds Of Common Sunflowers (Helianthus Annuus) In The Diet Of Scaled Quail (Callipepla Squamata) In Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Dixie Lozano-Lopez, Emily R. Neilson, Isaac C. Castillo
Energy Content Of Seeds Of Common Sunflowers (Helianthus Annuus) In The Diet Of Scaled Quail (Callipepla Squamata) In Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Dixie Lozano-Lopez, Emily R. Neilson, Isaac C. Castillo
Journal of the Arkansas Academy of Science
We analyzed the energy content of seeds of common sunflowers (Helianthus annuus) obtained from the crops of scaled quail (Callipepla squamata) collected from plains-mesa sand-scrub habitat in Eddy and Lea counties, New Mexico. Seeds were removed from crops and dried for 48 hours at 60°C to remove moisture and to standardize masses. Seeds were then analyzed for gross caloric value (i.e., energy content) in an oxygen bomb calorimeter. Energy content of seeds of common sunflowers from New Mexico was greater than that of many seeds previously reported from the diet of scaled quail and other granivorous …
Winter Surveys Of Cotinus Obovatus (American Smoketree) In The Ozark Mountains, Gary R. Graves
Winter Surveys Of Cotinus Obovatus (American Smoketree) In The Ozark Mountains, Gary R. Graves
Journal of the Arkansas Academy of Science
Cotinus obovatus (American smoketree) is a rare deciduous tree with a relictual distribution in southeastern North America. Efforts to map its fine-scale geographic distribution in the Ozark Mountains have been limited to the growing season when the distinctive blooming panicles and foliage facilitate detection in hardwood-cedar woodlands. I describe the physiognomic traits of leafless C. obovatus that permit effective population mapping in winter landscapes. Clumped growth and diagonally leaning stems facilitate detection at a distance. Bark texture, twig morphology, and sap odor confirm the identity of the tree at close range.
Impact Of Climate Variations On Soybean Yield In Eastern Arkansas: 1960-2014, J. W. Magugu, S. Feng, Q. Huang, K. Luthra
Impact Of Climate Variations On Soybean Yield In Eastern Arkansas: 1960-2014, J. W. Magugu, S. Feng, Q. Huang, K. Luthra
Journal of the Arkansas Academy of Science
Climate is the major factor affecting crop production; therefore, various agro-meteorological indicators have been frequently used to evaluate the impact of climate on crop production. In this study, we examined the temporal variations of agrometeorological indicators (growing degree days, total precipitation, dry spells and drought indices) during 1960-2014 and their impact on soybean yields in East Arkansas. Results show an increasing trend in growing degree days (GDDs) and dry spells, though the total precipitation during the soybean growing season remained nearly unchanged during the study period. Generally, GDDs and dry spells show a strong correlation with yields. We also evaluated …
Arkansas Endemic Flora And Fauna An Update With 13 Additional Species, H. W. Robison, C. T. Mcallister
Arkansas Endemic Flora And Fauna An Update With 13 Additional Species, H. W. Robison, C. T. Mcallister
Journal of the Arkansas Academy of Science
Arkansas supports a diverse variety of endemic biota with most found in the Interior Highlands (Ozarks and Ouachitas) of the state. Since 1988, several compilations have updated the number of endemics known while some former endemic species have been found in other states and subsequently removed from the state list. Here, update to the list by adding 13 taxa, several of which are fish parasites, making a grand total of 139 current endemic species in Arkansas.
Investigating The Effect Of Stratospheric Radiation On Seed Germination And Growth, B. N. Fong, K. V. Newhouse, M. J. Huss, E. Roberts, J. T. Kennon, H. Ali
Investigating The Effect Of Stratospheric Radiation On Seed Germination And Growth, B. N. Fong, K. V. Newhouse, M. J. Huss, E. Roberts, J. T. Kennon, H. Ali
Journal of the Arkansas Academy of Science
Three seed types: bean (Phaseolus vulgaris), corn (Zea mays) and radish (Raphanus sativus) were flown in a high altitude weather balloon into the mid-stratosphere to investigate the effects of high altitude radiation on germination success and seedling growth. After recovering and planting the seeds, the bean seeds showed lower germination success with exposure to high altitude radiation, and consequently stunted seedling growth. Cord and radish seeds experienced a statistically significant positive effect on germination success form radiation exposure compared to control seeds, but negative effect on seedling growth. Overall, the field experiments presented here support laboratory studies that show radiation …
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 …
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 …
Understanding Floristic Diversity Though A Database Of Greene County Specimens, K. M. Harris, M. B. Foard, T. D. Marsico
Understanding Floristic Diversity Though A Database Of Greene County Specimens, K. M. Harris, M. B. Foard, T. D. Marsico
Journal of the Arkansas Academy of Science
We present a floristic list of Greene County, Arkansas, based on accessioned collections from the Arkansas State University Herbarium (STAR). Currently, there are 1569 specimens representing 540 taxa from Greene County in STAR. Using the USDA Plants Database, plant species were analyzed according to whether or not they are native to the state as well as whether or not they have been previously documented as species occurring in the county. Having analyzed all the Greene County collections from STAR, we found 225 previously undocumented species. The data suggest that most of the specimens in the STAR collection were found in …
Possible New Arkansas Endemic Plant Revealed By Dna Sequence Analysis, A, K. P. Fawley, C. T. Witsell, M. W. Fawley, J. S. Breedlove, R. J. Brockman, A. C. Humphrey, J. M. Lawson, K. N. Mccallie, D. A. Prescott, J. T. Rushing, J. M. Whitaker
Possible New Arkansas Endemic Plant Revealed By Dna Sequence Analysis, A, K. P. Fawley, C. T. Witsell, M. W. Fawley, J. S. Breedlove, R. J. Brockman, A. C. Humphrey, J. M. Lawson, K. N. Mccallie, D. A. Prescott, J. T. Rushing, J. M. Whitaker
Journal of the Arkansas Academy of Science
Cardamine angustata var. ouachitana, a wildflower in the mustard family (Brassicaceae), was described by Smith in 1982 to include a form of Cardamine found only in the Ouachita Mountains of Arkansas. This variety is morphologically very similar to typical Cardamine angustata. The major difference noted by Smith for the two varieties was the complete lack of leaf hairs (trichomes) in the new variety, whereas typical Cardamine angustata normally possesses trichomes. However, Al-Shehbaz rejected the variety ouachitana and reduced it to synonymy with the typical C. angustata. The recommendation of Al-Shehbaz has been followed and the taxon Cardamine angustata var. ouachitana …
The Southern Arkansas University Biodiversity Collections, S. E. Krosnick, K. S. Dockter
The Southern Arkansas University Biodiversity Collections, S. E. Krosnick, K. S. Dockter
Journal of the Arkansas Academy of Science
No abstract provided.
Comparative Leaf Decomposition Rates Including A Non-Native Species In An Urban Ozark Stream, Sarah E. Lewis, Arthur V. Brown
Comparative Leaf Decomposition Rates Including A Non-Native Species In An Urban Ozark Stream, Sarah E. Lewis, Arthur V. Brown
Journal of the Arkansas Academy of Science
Leaf decomposition of three species of native Ozark vegetation was compared to that of one nonnative invasive species. Leaves were placed in an urban gravel-bed stream for 23 days. Changes in mass and condition of the leaves were assessed along with stream temperature, flow, width, depth and discharge. Species native to Eastern North American forests were sycamore (Platanus occidentalis), dogwood (Cornus florida), and redbud (Cercis canadensis). The nonnative species, Japanese (Amur) honeysuckle (Lonicera maackii) comprised approximately 80% of the understory vegetation within the riparian zone of the study reach. After 23 days, Sycamore lost 24.6% mass, dogwood lost 30%, redbud …
Characterizing The Variability Of Physical And Chemical Properties Across The Soil Individuals Mapped As Amy Silt Loam Soils In Southeastern Arkansas, B. Bhandari, Robert L. Ficklin
Characterizing The Variability Of Physical And Chemical Properties Across The Soil Individuals Mapped As Amy Silt Loam Soils In Southeastern Arkansas, B. Bhandari, Robert L. Ficklin
Journal of the Arkansas Academy of Science
Knowledge of physical and chemical properties of soil is relevant for landowners, researchers, and foresters, so that appropriate crop species and management practices to maximize site productivity can be selected. In addition to issues of plant productivity, the need for assessing soil properties has been expanded due to public interest in determining the consequences of management practices on soil quality relative to sustainability of crop ecosystem functions. The USDA-Natural Resources Conservation Service (NRCS) delineated soil mapping units to provide information about physical and chemical properties of soil in each soil series. However, soil mapping units do not provide details about …
Arkansas Endemic Biota: An Update With Additions And Deletions, H. Robison, C. Mcallister, C. Carlton, G. Tucker
Arkansas Endemic Biota: An Update With Additions And Deletions, H. Robison, C. Mcallister, C. Carlton, G. Tucker
Journal of the Arkansas Academy of Science
It has been over a decade since the publication of Robison and Allen (1995) that provided the definitive list of endemic flora and fauna of Arkansas. The present study brings up-to-date the endemic biota of the state. Since 1995, several new species have been described and new discoveries have been made, adding species to the state biota. Other species are deleted and new distributional information on other state endemics is presented. Specifically, 3 new plant species are added to the state list while 4 plant species are deleted. Sixteen new animal species/subspecies are added to the state list while numerous …
Geographic Variation In The Pollination Biology Of Passiflora Lutea (Passifloraceae), J. Burks Holland, J. Lanza
Geographic Variation In The Pollination Biology Of Passiflora Lutea (Passifloraceae), J. Burks Holland, J. Lanza
Journal of the Arkansas Academy of Science
Like most species of Passiflora, P. lutea is reported to produce one-day flowers with complicated floral movements and requires deposition of non-self pollen for fruit production. Medium sized bees are the most likely pollinators in central Texas. We report on a series of observations and experimental manipulations that compare the reproductive biology of P. lutea in central Arkansas to that reported previously from plants about 800 km distant in central Texas. We observed floral movements and floral visitors, compared fruit production of flowers available to pollinators versus flowers from which pollinators were excluded, and compared fruit production of flowers that …
Algae In Agricultural Fields From St. Francis County, Arkansas, T. Smith
Algae In Agricultural Fields From St. Francis County, Arkansas, T. Smith
Journal of the Arkansas Academy of Science
On August 9th, 2007, two agriculture fields (rice and sorghum fields) were sampled for freshwater algae in St. Francis County. The purpose of this study was to document the algal species in the rice and sorghum fields and compare the similarities of species composition. There were a total of 53 species identified. Overall, diatoms and cyanobacteria were equally dominant with both represented by 21 species (39.6% of the total) and 11 green algal species (20.8%) were present. The sorghum field was dominated by Chlorogloeopsis fritschii and Chroococcus limneticus, while Anabeana cylindrica was abundant in the rice field.
Planting Techniques For Establishing Loblolly Pine Seedlings On Two Subsoiled Sites In Arkansas, Jamie L. Schuler
Planting Techniques For Establishing Loblolly Pine Seedlings On Two Subsoiled Sites In Arkansas, Jamie L. Schuler
Journal of the Arkansas Academy of Science
The presence of soil compaction and root-restricting layers (e.g., plow pans) resulting from long-term agricultural practices often poses difficulties when converting these sites into loblolly pine plantations. Subsoiling is usually prescribed to alleviate any problems with soil strength. Subsoiling also creates soil conditions that may aid or hinder planting seedlings. The interaction of planting location. either in the furrow or the adjacent 0.3. 0.9 or 1.5 ft, and planting depth on 2 marginal crop lands was assessed in this study. Planting seedlings in the furrow and deep planting (to the terminal bud) resulted in better growth and increased survival after …
Tungoil Tree (Aleurites Fordii Hemsl.) (Euphorbiaceae): New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Joslyn Hernandez, Allen Leible, Chris Talley
Tungoil Tree (Aleurites Fordii Hemsl.) (Euphorbiaceae): New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Joslyn Hernandez, Allen Leible, Chris Talley
Journal of the Arkansas Academy of Science
No abstract provided.
Negundo Chaste Tree (Vitex Negundo L.) (Verbenaceae): New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Joslyn Hernandez, Allen Leible, Chris Talley, Brent Baker
Negundo Chaste Tree (Vitex Negundo L.) (Verbenaceae): New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Joslyn Hernandez, Allen Leible, Chris Talley, Brent Baker
Journal of the Arkansas Academy of Science
No abstract provided.
Discovery Of A Second Record Of Seaside Heliotrope (Heliotropilum Curassavicum L.) (Boraginaceae) In Arkansas, C. Renn Tumlison, Brett Serviss
Discovery Of A Second Record Of Seaside Heliotrope (Heliotropilum Curassavicum L.) (Boraginaceae) In Arkansas, C. Renn Tumlison, Brett Serviss
Journal of the Arkansas Academy of Science
No abstract provided.
Characterization Of Bacteriophages Of Pseudomonas Syringae Pv. Tomato, Sara E. Prior, Amanda J. Andrews, Russell O. Nordeen
Characterization Of Bacteriophages Of Pseudomonas Syringae Pv. Tomato, Sara E. Prior, Amanda J. Andrews, Russell O. Nordeen
Journal of the Arkansas Academy of Science
Bacteriophages from supernatants of the plant pathogenic bacteria Pseudomonas syringae pv. tomato (P. tomato) were isolated, enriched, and purified by density block centrifugation in cesium chloride (CsCl) step gradients. The DNA from purified phage was isolated and digested with the restriction endonucleases EcoRl or HindIII. Three different DNA fingerprint patterns were determined indicating 3 unique phage isolates. Genome sizes of the phage ranged from 40 to 52 kilobases (kB). Buoyant densities of phage particles in CsCI varied from 1.36 to 1.51 glml. Electron microscopy revealed a single morphological type with an elongated polyhedral head and a long tail indicating the …
Vascular Flora Of The South Fork Native Plant Reserve, Van Buren County, Arkansas, Theo Witsell, Brent Baker
Vascular Flora Of The South Fork Native Plant Reserve, Van Buren County, Arkansas, Theo Witsell, Brent Baker
Journal of the Arkansas Academy of Science
The South Fork Native Plant Preserve, a property owned and managed by the Gates Rogers Foundation, Inc., is located along the South Fork of the Little Red River (now Greers Ferry Lake) in Van Buren County, Arkansas. We conducted a floristic inventor/ of a 61.3 ha study area consisting of the preserve, adjacent lakefront property owned by the U.S. Army Corps of Engineers, and a riparian corridor on neighboring land from February through November 2005. A total of 582 vascular plant taxa, representing 118 families and 336 genera, was documented including six species (Carex lupuliformis Sartwell ex L.H.Dewey, Carex swanii …
Evaluation Of Cross Pollination Of Zephyranthes And Habranthus Species And Hybrids, Moytri Roy Chowdhury, John Hubstenberger
Evaluation Of Cross Pollination Of Zephyranthes And Habranthus Species And Hybrids, Moytri Roy Chowdhury, John Hubstenberger
Journal of the Arkansas Academy of Science
The genus Zephyranthes and the related genus Habranthus in the family Amaryllidaceae are commonly grown ornamental bulbs having new world homologies. Inter-specific and inter-generic hybridizations are complicated by the fact that some of the species are apomictic, cross incompatible, or have widely variable 2n chromosome numbers. A simple, inexpensive method of pollen storage was tested to evaluate the production of hybrid seed. Intact anthers harvested after pollen release and stored at 4°C were used for pollination. Emasculated flowers were pollinated at noon on the first or second day of anthesis. Hybrid crosses were labeled and seed collected when formed. All …
Development Of In Vitro Regeneration Protocols For Arkansas Rice Varieties (Oryza Sativa L.), Moytri Roy Chowdhury, Audrei Dabul, John Hubstenberger, Gregory Phillips
Development Of In Vitro Regeneration Protocols For Arkansas Rice Varieties (Oryza Sativa L.), Moytri Roy Chowdhury, Audrei Dabul, John Hubstenberger, Gregory Phillips
Journal of the Arkansas Academy of Science
Efficient regeneration of in vitro cultures of Oryza sativa L.is essential for successful manipulation of recombinant DNA technologies. Arkansas rice varieties perform better on modified Gamborg (B5)media, than on Murashige and Skoog (MS) orN6 media, which are more frequently reported in the literature. While 2,4-dichlorophenoxyacetic acid (2,4-D) is commonly used for regeneration treatments of rice, Picloram (Pic) provides a possible alternative as a synthetic auxin source. Although regeneration frequency appears low, complete regeneration (whole plantlets) was faster and development of the shoot was superior on picloram treatments as compared to 2,4-D. Screening 5 Arkansas varieties for regeneration efficiency on 3 …
Chinese Flame Tree (Koelreuteria Bipinnata Franch.) (Sapindaceae) New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Sara Melancen
Chinese Flame Tree (Koelreuteria Bipinnata Franch.) (Sapindaceae) New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Sara Melancen
Journal of the Arkansas Academy of Science
No abstract provided.
Sediment Loading And Water Quality Of Field Run-Off Water, J. S. Mcconnell, J. D. Mattice, B. W. Skulman, C. K. Bryant, M. Mozaffari
Sediment Loading And Water Quality Of Field Run-Off Water, J. S. Mcconnell, J. D. Mattice, B. W. Skulman, C. K. Bryant, M. Mozaffari
Journal of the Arkansas Academy of Science
Intensive tillage is commonly employed in many agronomic production systems in the United States. Tillage operations may include disking the field, re-smoothing the soil, seedbed formation, reducing the seedbeds, and shallow cultivation for weed control. Tillage practices in conjunction with rainfall have been linked to soil erosion, which may adversely affect the environment. The soil erosion dynamics of two large-scale production cotton fields that utilized both modern-conventional and conservation-tillage technology were examined. Studies were conducted in the cotton-producing region of southeast Arkansas in the Bayou Bartholomew watershed. Bayou Bartholomew is currently listed by the United States Environmental Protection Agency as …
Vascular Plant Species Inventory Of Richardson Bottoms Wildlife Viewing Area, Travis D. Marsico
Vascular Plant Species Inventory Of Richardson Bottoms Wildlife Viewing Area, Travis D. Marsico
Journal of the Arkansas Academy of Science
No abstract provided.
Nuclear Ribosomal Its Region Sequences For Differentiation Of Rubus Genotypes, Eric T. Stafne, John R. Clark, Allen L. Szalanski
Nuclear Ribosomal Its Region Sequences For Differentiation Of Rubus Genotypes, Eric T. Stafne, John R. Clark, Allen L. Szalanski
Journal of the Arkansas Academy of Science
Previous molecular investigations into Rubus species diversity have yielded significant knowledge about species relatedness. However, little work has been focused at the cultivar level. Random amplified polymorphic DNA(RAPD)-PCR studies have successfully differentiated closely related cultivars. The ability to definitively distinguish blackberry and red raspberry cultivars based on other molecular methods could prove useful in many aspects of breeding and proprietary protection. In this study, the nuclear ribosomal DNA internal transcribed spacer regions (ITS) of six Rubus cultivars were sequenced. DNA sequencing revealed little genetic variation among blackberry cultivars, but revealed distinctions between blackberry and red raspberry cultivars. Analysis by maximum-parsimony …
On The Rare Endemic Hydrophyllum Brownei Kral & Bates (Browne's Waterleaf): New Population Information And A Recommendation For Change In Status, Travis D. Marsico
On The Rare Endemic Hydrophyllum Brownei Kral & Bates (Browne's Waterleaf): New Population Information And A Recommendation For Change In Status, Travis D. Marsico
Journal of the Arkansas Academy of Science
Hydrophyllum brownei Krai & Bates (Browne's waterleaf), newly described in 1991, is endemic to the Ouachita Mountain Natural Division of Arkansas. For the purpose of better understanding population parameters within which H. brownei grows, ranges of shade values, population extents, and population distance relationships to streams were measured. Hydrophyllum brownei grows in extremely high shade, in populations of widely varying sizes, and always in association with a stream system. In order to list species associated with H. brownei, vouchers of species assemblages were collected at the H. brownei sites visited. The species is designated as critically imperiled globally because of …