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Ecology and Evolutionary Biology Commons™
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Articles 181 - 210 of 403
Full-Text Articles in Ecology and Evolutionary Biology
Effect Of City Effluent On The Diversity Of Aquatic Macroinvertabrates Of Sugar Creek, Clay County, Arkansas, Kay Cargill, George L. Harp
Effect Of City Effluent On The Diversity Of Aquatic Macroinvertabrates Of Sugar Creek, Clay County, Arkansas, Kay Cargill, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Rediscovery Of The Suckermouth Minnow, Phenacobius Mirabilis (Girard), In Arkansas, William E. Keith, Thomas M. Buchanan, Henry W. Robison
Rediscovery Of The Suckermouth Minnow, Phenacobius Mirabilis (Girard), In Arkansas, William E. Keith, Thomas M. Buchanan, Henry W. Robison
Journal of the Arkansas Academy of Science
No abstract provided.
Status Review Of The Threatened Ozark Cavefish (Amblyopsis Rosae), Arthur V. Brown, C. Stan Todd
Status Review Of The Threatened Ozark Cavefish (Amblyopsis Rosae), Arthur V. Brown, C. Stan Todd
Journal of the Arkansas Academy of Science
No abstract provided.
Relationship Between Diameter Breast High And Diameter Near Ground Line For Hardwood Species In Arkansas, Richard A. Kluender, Jimmie L. Yeiser
Relationship Between Diameter Breast High And Diameter Near Ground Line For Hardwood Species In Arkansas, Richard A. Kluender, Jimmie L. Yeiser
Journal of the Arkansas Academy of Science
The relationship of diameter breast high (DBH) and diameter near ground line (DNG) was investigated for three groups of Arkansas hardwoods from four physiographic regions in the state. The relationship between DBH and DNG did not vary significantly across species groups or physiographic regions. Equations of both linear and non-linear form were developed to estimate DBH from DNG. The relationships between DBH and DNG is used to estimate timber volume, growth, and value from residual stumps. The relationship is also useful in harvesting system design and cost estimation in operational forestry.
Comparison Of The Symbiotic Fauna Of The Family Plethodontidae In The Ouachita Mountains Of Western Arkansas, Douglas A. Winter, Wojciech M. Zawada, Arthur A. Johnson
Comparison Of The Symbiotic Fauna Of The Family Plethodontidae In The Ouachita Mountains Of Western Arkansas, Douglas A. Winter, Wojciech M. Zawada, Arthur A. Johnson
Journal of the Arkansas Academy of Science
During the spring of 1985, 101 salamanders representing six host species (29 Plethodon ouachitae, 25 P. caddoensis, 6 P. fourchensis, 23 P. serratus, 13 Desmognathus brimleyorum, and 5 P. glutinosus glutinosus) were collected from six localities in three counties in Arkansas (Polk, Scott, and Montgomery) and examined for symbionts. With the exception of Hannemania dunni, all symbionts recovered from the first five species listed constitute new host records, and the endoparasitic fauna in all species establish new locality records. Examinations revealed one or more species of parasites in 82% of the hosts. Eight species of symbionts (3 nematode, 1 trematode, …
Woody Vegetation Of The Crystal Mountains Region, Derwood Mayo, P. L. Raines
Woody Vegetation Of The Crystal Mountains Region, Derwood Mayo, P. L. Raines
Journal of the Arkansas Academy of Science
Arms-length rectangle transects and nested quadrats were used to sample overstory, understory and shrub layers on south-facing mountains, north-facing mountains and flat areas along Collier and Montgomery Creeks in Montgomery County, Arkansas. Data were collected and used to calculate importance values for trees and density values for shrubs. These data indicate that the shortleaf pine-oak forest type occurs on south-facing mountains while variants of white oak-black oak-northern red oak type occur on north-facing mountains and flat areas. Beech (Fagus grandifolia Var. caroliniana [Loud.] Fern and Rehd.) is common along Collier Creek and is completely absent from Montgomery Creek watershed. The …
Tagging And Marking Crawfish (Procambarus Clarkii) In A Population Estimation Study, Frank Meriweather
Tagging And Marking Crawfish (Procambarus Clarkii) In A Population Estimation Study, Frank Meriweather
Journal of the Arkansas Academy of Science
Crawfish (Procambarus clarkii) were tagged with enumerated plastic streamers and released in 0.1-ha ponds to observe recapture frequency in stand-up traps. Also, crawfish were marked by a uropod punch, released and recaptured in 0.1-ha ponds for population estimation. Survival of streamer-tagged crawfish in indoor tanks averaged 46.7% after 25 days, indicating that tagging caused stress leading to mortality, especially during molt. Recapture frequencies of tagged crawfish indicated sampling bias which obviated use of the tagging method in population assessments. Short term (3-day) survival of marked crawfish (92%) and retention of the mark after molt indicated potential application in population assessment …
Survey Of The Interior Least Tern On The Arkansas And White Rivers In Arkansas, Kenneth L. Smith
Survey Of The Interior Least Tern On The Arkansas And White Rivers In Arkansas, Kenneth L. Smith
Journal of the Arkansas Academy of Science
No abstract provided.
Population Trends Of The Loggerhead Shrike (Lanius Ludovicianus) In Arkansas, Fred L. Burnside Jr., William M. Shepherd
Population Trends Of The Loggerhead Shrike (Lanius Ludovicianus) In Arkansas, Fred L. Burnside Jr., William M. Shepherd
Journal of the Arkansas Academy of Science
No abstract provided.
Flow Reduction May Explain Sporadic Occurrence Of Craspedacusta Sowerbyi (Trachylina) Medusae, Peter P. Brussock, Lawrence D. Willis, Arthur V. Brown
Flow Reduction May Explain Sporadic Occurrence Of Craspedacusta Sowerbyi (Trachylina) Medusae, Peter P. Brussock, Lawrence D. Willis, Arthur V. Brown
Journal of the Arkansas Academy of Science
No abstract provided.
Notes On Three Palustrine Natural Community Types In The Arkansas Ozarks, Steve L. Orzell, William F. Pell, Gary E. Tucker
Notes On Three Palustrine Natural Community Types In The Arkansas Ozarks, Steve L. Orzell, William F. Pell, Gary E. Tucker
Journal of the Arkansas Academy of Science
No abstract provided.
Heterogenity Of The Spawning Populations Of Surf Smelt In The State Of Washington, Raj V. Kilambi
Heterogenity Of The Spawning Populations Of Surf Smelt In The State Of Washington, Raj V. Kilambi
Journal of the Arkansas Academy of Science
Biometric comparisons of three spawning populations of surf smelt, one from Pacific Coast and two from Puget Sound, were made. The Puget Sound populations (Hood Canal and Utsaladdy) were more similar to each other compared to the ocean populations. The Hood Canal and Utsaladdy smelt exhibited least distance function, D^2 , and greater overlap of meristic characters compared to the Lapush fish. It was postulated that the Puget Sound smelt populations were derived from the ocean smelt some 13,000 or more years ago.
Effects Of Litter On Aquatic Macrophyte Germination And Growth, Mark F. Carter, Forrest E. Lane, James B. Grace
Effects Of Litter On Aquatic Macrophyte Germination And Growth, Mark F. Carter, Forrest E. Lane, James B. Grace
Journal of the Arkansas Academy of Science
In Arkansas, during seasonal drought periods, lake water levels drop leaving exposed mudflats which are primary sites for seedling establishment. Commonly, these exposed mudflats are partially covered with decomposing litter from previous stands of aquatic plants. In this study, aqueous leachates from the litter of four macrophytes, Eleocharis quadrangulata, Justicia americana, Polygonum lapathifolium, and Potamogeton nodosus, were used to test for chemical interference with germination and seedling growth. Only Justicia americana leachate was found to affect the growth of several of the test species. The potential for chemical interference by Justicia litter was evaluated further using extracts of acidified leachate. …
Model To Predict Arkansas Gray Fox Fur Harvests, James H. Peck, Gary A. Heidt
Model To Predict Arkansas Gray Fox Fur Harvests, James H. Peck, Gary A. Heidt
Journal of the Arkansas Academy of Science
Linear regression analysis of total gray fox (Urocyon cinereoargenteus) fur harvests from 1954-1983 in Arkansas showed a high correlation with mean pelt values (r = 0.956). Single variable models using linear regression analyses of current season's pelt values (CSPV) and previous season's pelt values (PSPV) were designed to predict fur harvests. These models demonstrated high correlations for predicting harvests (r = 0.933 and r = 0.893 respectively). Regional analyses revealed a high correlation between mean pelt values and harvest for the Ozark Mountain region (r = 0.923), Ouachita Mountain region (r = 0.971 ), and Gulf Coastal Plain (r = …
Fluctuations And Relationships Of Selected Physiochemical Parameters In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson
Fluctuations And Relationships Of Selected Physiochemical Parameters In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson
Journal of the Arkansas Academy of Science
Annual and seasonal fluctuations and relationships are described for discharge, turbidity, chloride, total hardness, conductivity and suspended solids over an eight-year period in Dardanelle Reservoir. The parameters fluctuated rather widely primarily in response to seasonal patterns of rainfall. Chloride and conductivity were related and generally fluctuated together as did turbidity and suspended solids. Hardness appeared to vary independently of the others prior to 1979 then varied more closely with chloride after March 1979. Inherent differences between the Illinois Bayou arm and the main Arkansas River sections complicated the precise identification of any overall impact of power plant operation. No significant …
Age And Growth Of The Bluegill Lepomis Macrochrius Rafinesque From An Unmanaged Watershed Lake In Northeast Arkansas With Observations On Lake Ecology, Stephen A. Sewell
Age And Growth Of The Bluegill Lepomis Macrochrius Rafinesque From An Unmanaged Watershed Lake In Northeast Arkansas With Observations On Lake Ecology, Stephen A. Sewell
Journal of the Arkansas Academy of Science
Age and growth data were compiled on 114 bluegill, Lepomis macrochirus Rafinesque, taken from floodwater retarding structure #15 of the Big Creek Watershed project in Craighead and Greene counties of northeast Arkansas. This project was completed in the early 1960's by USDA-SCS. The 73 surface acre lake has not been managed for fish production and has been subjected to unscheduled water level manipulations during dry weather periods. These manipulations have maintained the bluegill population in healthy condition. The oldest bluegill collected were age class IV+. Average condition coefficient K(TL)declined from oldest to youngest individuals (2.96 in age class IV+ - …
Effects Of Commercial Fish Removal On Sport Fish Populations In Two Arkansas Reservoirs, Tommie Crawford
Effects Of Commercial Fish Removal On Sport Fish Populations In Two Arkansas Reservoirs, Tommie Crawford
Journal of the Arkansas Academy of Science
Commercial netting occurred October through April, 1971-1976 on Nimrod Lake and from October through April, 1973-1977 on Blue Mountain Lake in west central Arkansas. Using 7.6 cm or larger mesh gill and/or trammel nets, commercial fishermen harvested commercial fishes (buffalofishes [Ictiobus spp.]; common carp [Cyprinus carpio], carpsuckers [Carpiodes spp.]; drum [Aplodinotus grunniens]; gars [Lepisosteus spp.]; suckers [Catostomidae); and catfishes [Ictalurus spp. and Pylodictis olivaris]). During the study period, cove rotenone samples were conducted on an annual basis. Fishes collected were placed into age classes and enumerated. Data were then grouped into general categories (black basses [Micropterus spp], crappie [Pomoxis spp.], …
Summary Account Of The Carolina Parakeet In Arkansas, Daniel Mckinley, Douglas A. James
Summary Account Of The Carolina Parakeet In Arkansas, Daniel Mckinley, Douglas A. James
Journal of the Arkansas Academy of Science
The extinct Carolina Parakeet (Conuropsis carolinensis) once was part of the Arkansas avifauna. The first two reports of the species in what is now Arkansas were made in 1673 and 1718 by early French explorers. The remaining records are from the 1800s when parakeets were found in nearly all parts of the state, often in abundance. The last literature reference for the species still definitely occurring in Arkansas pertains to birds present in the summer of 1885 along the White River at Newport
Microgeographic Variation In The Mexican Vole, Microtus Mexicanus, Meredith J. Hamilton, Gary A. Heidt
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 …
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
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 …
Water Crisis--An Approach For Teachers Of Grades 7-12, George L. Harp
Water Crisis--An Approach For Teachers Of Grades 7-12, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Temperature Preference And Tolerance Of Grass Carp (Ctenopharyngodon Idella), Marvin L. Galloway, Raj V. Kilambi
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).
Helminths Of Common Grackles (Quiscalus Quiscula-Versicolor, Viellot) In Central Arkansas, Arthur A. Johnson
Helminths Of Common Grackles (Quiscalus Quiscula-Versicolor, Viellot) In Central Arkansas, Arthur A. Johnson
Journal of the Arkansas Academy of Science
No abstract provided.
Distribution And Efficiency Of Hydrocarbon-Oxidizing Bacteria In A Freshwater Reservoir, Carol H. Smedley, Jimmy D. Bragg, Aubrey B. Gosnell
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.
Protection Of Endangered Gray Bat (Myotis Grisescens) Colonies In Arkansas, Michael J. Harvey
Protection Of Endangered Gray Bat (Myotis Grisescens) Colonies In Arkansas, Michael J. Harvey
Journal of the Arkansas Academy of Science
No abstract provided.
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
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.
Influence Of Degray Reservoir On Zooplankton Populations In The Caddo And Ouachita Rivers, Ralph B. Roseberg, Mark Karnes
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.
Twenty-Two New Species Of Spiders For The Arkansas Checklist, Mary L. Beck, Peggy Rae Dorris
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.
Prairie Phenology And Seed Germination, Donald E. Culwell, Robert Wright
Prairie Phenology And Seed Germination, Donald E. Culwell, Robert Wright
Journal of the Arkansas Academy of Science
No abstract provided.
Zooplankton Population Structure In Three Reservoirs Near The Ouachita Mountain-Gulf Coastal Plain Interface, Stephen B. Smith, Thomas E. Moen
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.