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Journal of the Arkansas Academy of Science

Articles 151 - 180 of 333

Full-Text Articles in Terrestrial and Aquatic Ecology

Microgeographic Variation In The Mexican Vole, Microtus Mexicanus, Meredith J. Hamilton, Gary A. Heidt Jan 1984

Microgeographic Variation In The Mexican Vole, Microtus Mexicanus, Meredith J. Hamilton, Gary A. Heidt

Journal of the Arkansas Academy of Science

Altitudinal variation was assessed in 115 (62 male; 53 female) Mexican voles (Microtus mexicanus) from six localities in Jalisco, Mexico. Univariate and multivariate statistical techniques were employed in the data analyses. A total of 49 skeletal measurements were investigated, and of these, 17 showed significant interlocality variation. Rostral breadth, depth of braincase, rostral height, width of third molar and nasal length were found to be the most variable characters. Component I (a size factor) accounted for 36% of the total phenetic variation; components II and III accounted for 30% and 19%, respectively. Larger individuals were found to occur at lower …

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River Otter In Arkansas Iii. Characteristics Of Otter Latrines And Their Distribution Along Beaver-Inhabited Watercourses In Southwest Arkansas, Mark R. Karnes, C. Renn Tumlison Jan 1984

River Otter In Arkansas Iii. Characteristics Of Otter Latrines And Their Distribution Along Beaver-Inhabited Watercourses In Southwest Arkansas, Mark R. Karnes, C. Renn Tumlison

Journal of the Arkansas Academy of Science

Forty-one river otter (Lutra canadensis) fecal deposit (latrine) sites were located during April 1983 through March 1984 along beaver (Castor canadensis) inhabited watercourses in Clark, Nevada, and Ouachita counties, Arkansas. Latrine sizes ranged from 64 cm² to 5.01 m² (x-bar=0.30 m²; S.D. =0.88), and contained 2 to 78 scats per latrine (x-bar=9.2; S.D. = 13.8). The most common sites for latrines included elevated leaf or moss covered banks (51.2%), beaver lodges or bank dens (17.1 %), and beaver scent mounds (12.2%). Other latrine sites included felled logs over open water, bare soil along elevated banks, and exposed sandbars. Otter presence …

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Water Crisis--An Approach For Teachers Of Grades 7-12, George L. Harp Jan 1984

Water Crisis--An Approach For Teachers Of Grades 7-12, George L. Harp

Journal of the Arkansas Academy of Science

No abstract provided.

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Temperature Preference And Tolerance Of Grass Carp (Ctenopharyngodon Idella), Marvin L. Galloway, Raj V. Kilambi Jan 1984

Temperature Preference And Tolerance Of Grass Carp (Ctenopharyngodon Idella), Marvin L. Galloway, Raj V. Kilambi

Journal of the Arkansas Academy of Science

Grass carp, acclimated at 24 °C, were tested for temperature preference in a laboratory, horizontal gradient tank. After a 6-day period of exploration the grass carp gravitated to a final thermal preferendum of 35 °C. In the temperature tolerance test the ultimate upper incipient lethal temperature (TL50), was estimated as 41.5°C. The results are compared to those of a similar study with hybrid carp (female grass carp x male bighead carp).

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Helminths Of Common Grackles (Quiscalus Quiscula-Versicolor, Viellot) In Central Arkansas, Arthur A. Johnson Jan 1984

Helminths Of Common Grackles (Quiscalus Quiscula-Versicolor, Viellot) In Central Arkansas, Arthur A. Johnson

Journal of the Arkansas Academy of Science

No abstract provided.

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Distribution And Efficiency Of Hydrocarbon-Oxidizing Bacteria In A Freshwater Reservoir, Carol H. Smedley, Jimmy D. Bragg, Aubrey B. Gosnell Jan 1984

Distribution And Efficiency Of Hydrocarbon-Oxidizing Bacteria In A Freshwater Reservoir, Carol H. Smedley, Jimmy D. Bragg, Aubrey B. Gosnell

Journal of the Arkansas Academy of Science

Hydrocarbon-oxidizing bacteria were identified from three stations on DeGray Reservoir, Arkansas. The organisms were primarily gram-negative rods representing 9 taxa and 37 biotypes Pseudomonas spp. were the most common isolates. The largest populations were found in areas most frequently used by boaters, although seasonal fluctuations were apparent during the spring and fall. The degradation of outboard motor oil by the five most rapidly growing isolates was studied. Each species had a different decomposition profile, and substrate oxidation rates were variable Acinetobacter calcoaceticus var. anitratus was the most efficient decomposer.

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Protection Of Endangered Gray Bat (Myotis Grisescens) Colonies In Arkansas, Michael J. Harvey Jan 1984

Protection Of Endangered Gray Bat (Myotis Grisescens) Colonies In Arkansas, Michael J. Harvey

Journal of the Arkansas Academy of Science

No abstract provided.

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Effect Of The Payment-In-Kind (Pik) Program On The Psorophora Columbiae Mosquito Population Of A Northeast Arkansas Ricefield Community, Larry A. Olson, Julia L. Reid Jan 1984

Effect Of The Payment-In-Kind (Pik) Program On The Psorophora Columbiae Mosquito Population Of A Northeast Arkansas Ricefield Community, Larry A. Olson, Julia L. Reid

Journal of the Arkansas Academy of Science

No abstract provided.

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Influence Of Degray Reservoir On Zooplankton Populations In The Caddo And Ouachita Rivers, Ralph B. Roseberg, Mark Karnes Jan 1984

Influence Of Degray Reservoir On Zooplankton Populations In The Caddo And Ouachita Rivers, Ralph B. Roseberg, Mark Karnes

Journal of the Arkansas Academy of Science

No abstract provided.

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Twenty-Two New Species Of Spiders For The Arkansas Checklist, Mary L. Beck, Peggy Rae Dorris Jan 1983

Twenty-Two New Species Of Spiders For The Arkansas Checklist, Mary L. Beck, Peggy Rae Dorris

Journal of the Arkansas Academy of Science

No abstract provided.

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Prairie Phenology And Seed Germination, Donald E. Culwell, Robert Wright Jan 1983

Prairie Phenology And Seed Germination, Donald E. Culwell, Robert Wright

Journal of the Arkansas Academy of Science

No abstract provided.

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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.

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Spiders Collected From Abandoned Mine Tunnels In The Ouachita National Forest, Peggy Rae Dorris, David A. Saugey Jan 1983

Spiders Collected From Abandoned Mine Tunnels In The Ouachita National Forest, Peggy Rae Dorris, David A. Saugey

Journal of the Arkansas Academy of Science

No abstract provided.

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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.

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Neviusia Alabamensis: A Phytogeographic Analysis, Alice A. Long Jan 1983

Neviusia Alabamensis: A Phytogeographic Analysis, Alice A. Long

Journal of the Arkansas Academy of Science

No abstract provided.

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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

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Phytoplankton Community Structure In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson Jan 1983

Phytoplankton Community Structure In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson

Journal of the Arkansas Academy of Science

Phytoplankton data were collected with standard equipment and procedures over an eight-year period (1975-1982) in Dardanelle Reservoir, Arkansas. Community abundance and diversity at the genus level are described. Sixty-five genera representing 35 families and five divisions were identified. Total phytoplankton abundance and diversity were quite uniform among the stations but fluctuated considerably with time. These fluctuations did not correspond clearly with season. Dominant taxa were seasonal, though, with diatoms being usually dominant in January, April and October, and blue-greens dominant in July. The phytoplankton community structure has not been significantly altered by the operation of ANO Unit I.

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Zooplankton Community Structure In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson Jan 1983

Zooplankton Community Structure In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson

Journal of the Arkansas Academy of Science

Zooplankton was collected at 10 stations in Dardanelle Reservoir from 1975 to 1982. Current data were compared to a five-year preoperational study phase. Rotifer taxa strongly dominated the community. Overall abundance was higher, variety about the same and diversity lower than those of comparable studies. Thermal discharges caused a dominance shift between two rotifer taxa, slightly depressed abundance and variety, did not noticeably affect diversity and elevated the phytoplankton/zooplankton ratio. Heated effluent also stimulated stronger fluctuations in abundance and variety. Other studies indicate that in upper sections of the Arkansas River drainage, microcrustaceans dominate lake habitats whereas rotifers dominate river …

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Fishes Of The Antoine River, Little Missouri River System, Southwestern Arkansas, Henry W. Robison, Elaine Laird, Darryl Koym Jan 1983

Fishes Of The Antoine River, Little Missouri River System, Southwestern Arkansas, Henry W. Robison, Elaine Laird, Darryl Koym

Journal of the Arkansas Academy of Science

The fishes of the Antoine River (Little Missouri River system) in southwestern Arkansas were surveyed from September, 1980 - June, 1982. Thirty-four field collections plus literature and museum records, revealed a total of 60 species in 29 genera representing 16 families to presently inhabit the river system. Comments are presented on life history aspects, systematics and occurrence of fishes in the study area.

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Range Extension Of The Silver Carp, Hypophthalmichthys Molitrix, F. Allen Carter, John K. Beadles Jan 1983

Range Extension Of The Silver Carp, Hypophthalmichthys Molitrix, F. Allen Carter, John K. Beadles

Journal of the Arkansas Academy of Science

No abstract provided.

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Sicklefin Chub, Hybopsis Meeki, In The Mississippi River Bordering Arkansas, F. Allen Carter, John K. Beadles Jan 1983

Sicklefin Chub, Hybopsis Meeki, In The Mississippi River Bordering Arkansas, F. Allen Carter, John K. Beadles

Journal of the Arkansas Academy of Science

No abstract provided.

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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.

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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.

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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.

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Effects Of Sewage Pollution In The White River, Arkansas, Arthur V. Brown, Lawrence D. Willis, Peter P. Brussock Jan 1983

Effects Of Sewage Pollution In The White River, Arkansas, Arthur V. Brown, Lawrence D. Willis, Peter P. Brussock

Journal of the Arkansas Academy of Science

Recently there has been much emphasis placed on the importance of leaf detritus processing to the energetics of stream invertebrates. This study was designed primarily to assess the effects of municipal effluent on the ability of a stream community to utilize leaf detritus, and secondarily to evaluate the extent of the pollution of the White River by the Fayetteville, Arkansas, effluent discharge. Physical and chemical water quality and benthos were sampled periodically at one station upstream and two stations downstream from the discharge, and in the Richland Creek tributary. Processing of leaf detritus was also studied at each site using …

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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 …

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Short Creek Oolite (Lower Mississippian) Deposition, War Eagle Quarry, Madison County, Arkansas, Barbara A. Lisle Jan 1983

Short Creek Oolite (Lower Mississippian) Deposition, War Eagle Quarry, Madison County, Arkansas, Barbara A. Lisle

Journal of the Arkansas Academy of Science

The Short Creek Oolite is the only formally designated member of the Lower Mississippian Boone Formation. Although oolite deposits are often considered to be formed in shoal areas, detailed study of the War Eagle Short Creek disclosed characteristics incompatible with deposition as an oolite shoal. At the War Eagle Quarry, the Short Creek Oolite occurs between deep water strata and there is a conspicuous absence of cross-stratification and other shallow water bedding features. Modal analysis revealed a lower oolith content than found in Recent oolite shoals or in the Short Creek Oolite of Missouri, which has been interpreted as a …

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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 …

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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.

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First Host Plant Records For Chelysomidea Guttata (Herrich-Schaeffer) (Hemiptera: Scutelleridae, With Notes On The Biology And Distribution, Julia L. Reid, Harvey E. Barton Jan 1983

First Host Plant Records For Chelysomidea Guttata (Herrich-Schaeffer) (Hemiptera: Scutelleridae, With Notes On The Biology And Distribution, Julia L. Reid, Harvey E. Barton

Journal of the Arkansas Academy of Science

No abstract provided.

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