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Full-Text Articles in Life Sciences
Botanical Survey Of A Cypress-Tupelo Swamp, Veryl V. Board, Charlotte Allen, Andrea Reeves
Botanical Survey Of A Cypress-Tupelo Swamp, Veryl V. Board, Charlotte Allen, Andrea Reeves
Journal of the Arkansas Academy of Science
Collection of plants from a cypress-tupelo swamp located at the eastern border of Independence County was part of a long range plan to document the flora of the county. Efforts were made to determine if the study area would fit the current federal definition of wetlands which requires aperiodic or permanent inundation of the soil.
Distribution And Population Structure Of Freshwater Mussels (Unionidae) In Lake Chicot, Arkansas, John L. Harris, Peter J. Rust, Stephen W. Chordas Iii, George L. Harp
Distribution And Population Structure Of Freshwater Mussels (Unionidae) In Lake Chicot, Arkansas, John L. Harris, Peter J. Rust, Stephen W. Chordas Iii, George L. Harp
Journal of the Arkansas Academy of Science
A systematic survey of mussel concentrations (= beds) in Lake Chicot was conducted during June 10-15, 1991. The lake was divided into 58 relatively equal-sized quadrats for qualitative survey by two, 2-man teams using Hookah dive systems. A qualitative survey revealed a single mussel bed encompassing an area approximately 12 km long and four m wide. For population analysis, the bed was sub-divided into five strata encompassing 9600 m2 each. Twenty random, 4 x 1 m, quantitative samples were taken from each of the five strata. Four mussel taxa; Amblema plicata (threeridge), Quadrula quadrula (mapleleaf) Quadrula nodulata (wartyback), and Plectomerus …
Additional Occurrences Of The Bog Clubmosses In Southern Arkansas, James R. Bray, Daniel L. Marsh
Additional Occurrences Of The Bog Clubmosses In Southern Arkansas, James R. Bray, Daniel L. Marsh
Journal of the Arkansas Academy of Science
No abstract provided.
Effect Of Light, Nitrogen, And Water Management On Rice (Oryza Sativa) Tolerance To Fenoxaprop, Roy J. Smith Jr., Aurora M. Baltazar, Paolo Nastasi
Effect Of Light, Nitrogen, And Water Management On Rice (Oryza Sativa) Tolerance To Fenoxaprop, Roy J. Smith Jr., Aurora M. Baltazar, Paolo Nastasi
Journal of the Arkansas Academy of Science
The effect of light intensity, nitrogen (N), and water management on rice (Oryza sativa cv. 'Newbonnet' and 'Lemont') tolerance to fenoxaprop {(+)-2-[4[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acid} was determined in two field studies at the Rice Research and Extension Center, Stuttgart, AR, in 1988 and 1989. In one study, 'Newbonnet' rice was treated with 0.22 kgai ha-1fenoxaprop at 0, 1, 3, 5, 7, 10, 14, and 28 days after N application and flooding. Moderate to severe foliar chlorosis, stunting, and stand and yield reductions occurred when fenoxaprop was applied within 7 days after N application and flooding. None to slight injury or yield reduction …
Occurrence Of The Hybrid Honey Locust (Gleditsia X Texana Sarg.) In Southwest Arkansas, Brian A. Smith, Daniel L. Marsh
Occurrence Of The Hybrid Honey Locust (Gleditsia X Texana Sarg.) In Southwest Arkansas, Brian A. Smith, Daniel L. Marsh
Journal of the Arkansas Academy of Science
No abstract provided.
Distribution Of The Mole Salamander, Ambystoma Talpoideum (Urodela: Ambystomatidae), In Arkansas With Notes On Paedomorphic Populations, Stanley E. Trauth, Betty G. Cochran, David A. Saugey, William R. Posey Ii, Wesley A. Stone
Distribution Of The Mole Salamander, Ambystoma Talpoideum (Urodela: Ambystomatidae), In Arkansas With Notes On Paedomorphic Populations, Stanley E. Trauth, Betty G. Cochran, David A. Saugey, William R. Posey Ii, Wesley A. Stone
Journal of the Arkansas Academy of Science
No abstract provided.
Caudal Hedonic Glands In The Dark-Sided Salamander, Eurycea Longicauda Melanopleura (Urodela: Plethodontidae), Stanley E. Trauth, Richard D. Smith, Abbey Cheng, Patrick Daniel
Caudal Hedonic Glands In The Dark-Sided Salamander, Eurycea Longicauda Melanopleura (Urodela: Plethodontidae), Stanley E. Trauth, Richard D. Smith, Abbey Cheng, Patrick Daniel
Journal of the Arkansas Academy of Science
No abstract provided.
Fishes Of Bayou Meto And Wattensaw Bayou, Two Lowland Streams In East Central Arkansas, Walter Dean Heckathorn Jr.
Fishes Of Bayou Meto And Wattensaw Bayou, Two Lowland Streams In East Central Arkansas, Walter Dean Heckathorn Jr.
Journal of the Arkansas Academy of Science
Bayou Meto is a low-gradient, highly turbid, warm-water stream that originates in the foothills of the Interior Highlands of central Arkansas and flows southeastward 290 km to the Arkansas River. In the 1970's, Bayou Meto was contaminated with dioxins from a point source (Vertac Corp.) now recognized as a USEPA Superfund site. The present study was initiated to investigate the impact of dioxin on the fish community of Bayou Meto. Fishes were collected by backpack-electrofishing, boat-electrofishing, seines, hoopnets, minnow traps, and trot lines, at 14 sampling stations. Diversity indices (Shannon and Margalef) were used to compare diversity among sample sites. …
Stress Induced Protein Changes In Tall Fescue, R. L.G. Long, Lance T. Adams, J. D. Corely, Alvan A. Karlin, B. L. Parsons, Maurice G. Kleve, J. Henle
Stress Induced Protein Changes In Tall Fescue, R. L.G. Long, Lance T. Adams, J. D. Corely, Alvan A. Karlin, B. L. Parsons, Maurice G. Kleve, J. Henle
Journal of the Arkansas Academy of Science
Tall fescue (Festuca arundinacea Schreb.), the most important pasture grass in Arkansas, exhibits different agricultural properties when it is infected by its mutualistic endophyte Acremonium coenophialum Morgan-Jones and Gams. We postulate that the presence of endophyte exerts a stress on the host that enhances or detracts from the host's ability to express specific genes. We tested this hypothesis by heat stressing infected and non-infected, juvenile and mature tall fescue, and examining their protein profiles by SDS-PAGE analysis. The results indicate that mature, infected, stressed grass produced greater amounts of Rubisco (ribulose bisphosphate carboxylase-oxygenase) than all other treatments. Additionally, the mature, …
Unhatched Eggs In Nests Of Red-Cockaded Woodpeckers, Warren G. Montague, Claudia F. Bailey, Joseph C. Neal, Douglas A. James
Unhatched Eggs In Nests Of Red-Cockaded Woodpeckers, Warren G. Montague, Claudia F. Bailey, Joseph C. Neal, Douglas A. James
Journal of the Arkansas Academy of Science
During 1991 and 1992, nests of Red-cockaded Woodpeckers (Picoides borealis) were monitored in the Ouachita National Forest in Scott and Polk counties of west-central Arkansas. Nests in three additional woodpecker areas in Arkansas and Oklahoma were also monitored in 1992. Of 92 eggs laid in 27 nesting attempts in the Ouachita National Forest, 18 (19%) failed to hatch. When viewed in the cavities, six unhatched eggs were noticeably below average in size for the species and eight were average size. Seven unhatched eggs were removed in 1992 from seven nests in Arkansas and Oklahoma; three eggs showed some embryological development …
Range Extension Of The Paleback Darter, Mitzi G. Pardew, Betty G. Cochran, William R. Posey Ii
Range Extension Of The Paleback Darter, Mitzi G. Pardew, Betty G. Cochran, William R. Posey Ii
Journal of the Arkansas Academy of Science
Surveys from 1990 through 1992 resulted in a significant range extension of the paleback darter, Etheostoma pallididorsum, which is endemic to the Ouachita Mountains. Prior to 1990, it had only been collected in the upper Caddo River drainage and a tributary to the Ouachita River below Lake Ouachita. The collections that extended this darter's range occurred in tributaries of the Ouachita River above Lake Ouachita.
Role Of Endophytes In Tall Fescue, E. L. Piper, C. P. West
Role Of Endophytes In Tall Fescue, E. L. Piper, C. P. West
Journal of the Arkansas Academy of Science
Tall fescue (Festuca arundinacea Schreb.) is the most commonly grown cool season grass used for pastures in Arkansas. Most tall fescue contains a fungal endophyte (Acremonium coenophialum Morgan-Jones & Gams), which causes fescue toxicosis in livestock and costs cattle producers millions of dollars annually in lost production. Endophyte presence is known to reduce wild mammal populations in areas where tall fescue is prevalent. The endophyte spends its entire life cycle within the plant and is transmitted through the seed. The association is mutualistic with the plant providing nutrients for the endophyte and the endophyte conferring drought, insect, and nematode resistance …
New Distributional Records For Arkansas Sturgeons, Thomas M. Buchanan, Henry W. Robison, Ken Shirley
New Distributional Records For Arkansas Sturgeons, Thomas M. Buchanan, Henry W. Robison, Ken Shirley
Journal of the Arkansas Academy of Science
No abstract provided.
Quality Of Shrimp Available To Consumers In Arkansas, Darlene Gentles, Jimmy D. Bragg
Quality Of Shrimp Available To Consumers In Arkansas, Darlene Gentles, Jimmy D. Bragg
Journal of the Arkansas Academy of Science
No abstract provided.
Changes In The Nomenclature And Composition Of The Arkansas Fish Fauna From 1988 To 1993, Henry W. Robison, Thomas M. Buchanan
Changes In The Nomenclature And Composition Of The Arkansas Fish Fauna From 1988 To 1993, Henry W. Robison, Thomas M. Buchanan
Journal of the Arkansas Academy of Science
No abstract provided.
Enlarged Posterior Maxillary Teeth In The Scarlet Snake, Cemophora Coccinea (Serpentes: Colubridae), Using Scanning Electron Microscopy, Stanley E. Trauth
Enlarged Posterior Maxillary Teeth In The Scarlet Snake, Cemophora Coccinea (Serpentes: Colubridae), Using Scanning Electron Microscopy, Stanley E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.
Arkansas Range Extensions Of The Eastern Small-Footed Bat (Myotis Leibii) And Northern Long-Eared Bat (Myotisseptentrionalis) And Additional County Records For The Silver-Haired Bat (Lasionycteris Noctivagans), Hoary Bat (Lasiurus Cinereus), Southeastern Bat (Myotis Austroriparius), And Rafinesque's Big-Eared Bat (Plecotus Rafinesquii), David A. Saugey, V. Rick Mcdaniel, Daniel R. England, Marsha C. Rowe, Laura R. Chandler-Mozisek, Betty G. Cochran
Arkansas Range Extensions Of The Eastern Small-Footed Bat (Myotis Leibii) And Northern Long-Eared Bat (Myotisseptentrionalis) And Additional County Records For The Silver-Haired Bat (Lasionycteris Noctivagans), Hoary Bat (Lasiurus Cinereus), Southeastern Bat (Myotis Austroriparius), And Rafinesque's Big-Eared Bat (Plecotus Rafinesquii), David A. Saugey, V. Rick Mcdaniel, Daniel R. England, Marsha C. Rowe, Laura R. Chandler-Mozisek, Betty G. Cochran
Journal of the Arkansas Academy of Science
We continued field studies of bats in non-cave regions of Arkansas from 1989 to present and utilized specimens submitted to the Arkansas Department of Health Rabies Laboratory to establish Arkansas range extensions for the eastern smallfooted bat (Myotis leibii) and northern long-eared bat (Myotisseptentrionalis). In addition, we documented additional county records for the silver-haired bat (Lasionycteris noctivagans), hoary bat (Lasiurus cinereus), southeastern bat (Myotis austroriparius), and Rafinesque's big-eared bat (Plecotus rafinesquii).