Proceedings of Southeastern Fish and Wildlife Conference
Prior to 2013, SEAFWA published the Proceedings of annual conferences. In 2014, SEAFWA began publishing the peer-reviewed Journal of the Southeastern Association of Fish and Wildlife Agencies.
2351 - 2400 of 4522 articles | 50 per page | page 48
| Article | Year |
|---|---|
Shot Ingestion By Waterfowl On National Wildlife Refuges In Florida Gizzards from 9,632 ducks bagged by hunters on or adjacent to 4 National Wildlife Refuges in Florida from 1973 through 1978 were examined for ingested lead and steel shot. Lead and/or steel shot were found in 197.4% of the 15 species represented. Mean ingestion rates ranged from more than 50% for both canvasbacks (Aythya valisineria) and ruddy ducks (Oxyurajamaicensis) to less than 10% for lesser scaups (A. affinis), green-winged teals (Anas crecca), blue-winged teals (A. discors), wigeons (A. americana), gadwalls (A. strepera), shovelers (A. James L. Baker, Richard L. Thompson
Pages 256-262 |
1978 |
Crop Damage By White-Tailed Deer In The Southeast A survey of state wildlife resource agencies in the Southeast was conducted regarding deer crop damage problems during 1977. Affected crops were listed and the extent and degree of damage was evaluated by each agency. Methods used for alleviating deer crop damage were outlined. Antlerless deer harvest during legal hunting seasons was reported to be the most successful damage control measure practiced, however, most states utilized a combination of procedures. Deer season lengths, bag limits, and 1977-78 deer harvest data in the Southeast were summarized. W. Gerald Moore, Robert H. folk, lll
Pages 263-268 |
1978 |
Endogenous Fat As An Indicator Of Physical Condition Of Southeastern White-Tailed Deer Data were collected from 440 white-tailed deer (Odocoileus virginianus) throughout much of the southeastern United States in order to determine relationships between specific fat indices and overall physical condition. Specific criteria were presented for evaluating physical condition of white-tailed deer. An improved method for measuring the amount of bone marrow fat was described. The employment of various fat reserves as indicators of physical condition indicated that kidney fat was superior to other indices. Arthur W. Stockle, Gary L. Doster, Wlliam R. Davidson
Pages 269-279 |
1978 |
Mourning Dove Harvest Characteristics, Survival, And Population Trend In North And South Carolina Within a study area comprising 6 South Carolina counties and 4 North Carolina counties, mourning dove (Zenaida macroura) harvest characteristics, survival, and population trend were studied. High survival and productivity are the factors responsible for the high mourning dove population on the study area. From 1968 through 1975, the study area had a stable breeding population trend, and productivity equaled or exceeded the productivity necessary to achieve population stability.
Pages 280-290 |
1978 |
An Evaluation Of Factors Affecting-Night-Light Counts Of Alligators Sixty-eight night surveys of American alligators (Alligator mississippiensis) were conducted from 17 June 1976 to 12 July 1977 on a large cypress-fringed lake in north-central Florida. Allan R. Woodward, Wayne R. Marion
Pages 291-302 |
1978 |
Turkey Harvest Patterns On A Heavily Hunted Area A heavily hunted turkey (Meleagris gal!opavo osceola) population was monitored by radio-tracking during 6 hunting seasons. In the sample of 125 radioinstrumented birds, there was no difference in the rate of harvest of turkeys that had been transplanted to the area and those that had been captured on the area, or between adults and juveniles or between males and females. Nearly all harvest in the sample occurred during the first week in the 3 hunting seasons that both sexes were legal game. Harvest was more evenly distributed throughout the 7-week-Iong season when only gobblers were legal. Lovett E. Williams, Jr., David H. Austin, Tommie E. Peoples Pages 303-308 |
1978 |
Patterns Of Mercury Contamination In A Wintering Waterfowl Community Mercury contamination levels were studied in several species of waterfowl wintering on a reactor cooling reservoir (Par Pond) of the u.s. Department of Energy's (U .S. D.O.E.) Savannah River Plant near Aiken, South Carolina. Samples from 177 American coots (Fulica americana) indicated that this species which is largely vegetarian on its wintering grounds, had lower levels of mercury accumulation than did 4 other aquatic species which were more carnivorous in their food habits. Deborah L. Clay, I. Lehr Brisbin, Jr., Parshall B. Bush, Ernest E. Provost
Pages 309-317 |
1978 |
Rehabilitation Of Birds Oiled On Two Mid-Atlantic Estuaries An estimated 52,500 birds died as a result of 7 major oil spills on 2 mid-Atlantic estuaries between 1973-78. Ruddy ducks (Oxyura jamaicensis) constituted 98% of 12,500 birds known to have died from 5 spills on the Delaware River. Seventy-six percent of 40,000 dead birds from 2 Chesapeake Bay spills were horned grebes (Podiceps auritus) and oldsquaw (Clangula hyemalis). Oiled waterfowl that were captured alive (6% of the estimated mortality) were cleaned with a variety of cleaning agents and techniques. Matthew C. Perry, Fred Ferrigno, Fairfax H. Settle
Pages 318-325 |
1978 |
Exposure Of Bobwhite Quail And Cottontail Rabbits To Methyl Parathion Bobwhite quail (Colinus virginianus) and cottontail rabbits (Sylvilagus ftloridanus) collected before, during and after spraying operations using methyl parathion and toxaphene on cotton showed significant decreases in brain acetylcholinesterase (AChE) activity levels, as determined by one-way analysis of variance. Inhibition from the pre-spray mean was 9.0 to 68.3% for quail brains, and 7.0 to 32.4% for rabbit brains. Results for plasma activities were similar, but generally more variable than brain values. Paul C. Smithson, O. Thomas Sanders, Jr.
Pages 326-334 |
1978 |
Fawning Dates Of Known-Age White-Tailed Deer And Their Management Implications Fawning dates of penned, known-age, Texas white-tailed deer (Odocoileus virginianus texanus) were recorded over a 3-year period. The peak 14-day fawning period for 27 3-year-old-plus females was 10 June-23 June with a mean fawning date (MFD) of 19 June. Peak fawning period for 26 2-year-old females was 24 June-7 July with aM FD of 8 July. The fawning peak for 36 I-year-olds included 2 14-day periods between 8 July-4 August with a MFD of 3 August. The MFD was significantly different (P <0.01) between all age-classes and between individual age-classes (P < 0.05). Gregory L. Butts, Donnie E. Harmel, Robert L. Cook, William E. Armstrong
Pages 335-338 |
1978 |
Some Population Parameters Of The Cades Cove Deer Herd, Great Smoky Mountains National Park A study of white-tailed deer (Odocoileus virginianus) in Cades Cove. Great Smoky Mountains National Park was conducted during the summer of 1977 to determine population density, herd behavior, habitat utilization, and neral condition of the herd. Thirty-seven counts were conducted and 2,172 deer observed. The minimum summer population was estimated at 519 deer using the method of bounded counts; the sex ratio was 90.8 bucks per 100 does. Fawn-at-heel counts yielded a ratio of 49.5 fawns per 100 does. Deer utilized hayfields and horse pastures but avoided cow pastures. Thomas L. Burst, Michael R. Pelton
Pages 339-347 |
1978 |
Artificial Propagation Of The Giant Canada Goose In Tennessee A total of 107} giant Canada geese (Bran/a canadensis maxima) was artificially propagated and flighted from the Buffalo Springs Research Center during 7 breeding seasons. Annual production increased from less than 50 goslings during the first 2 years to O\\er }OO goslings in the final year. The progressive increases in success were attributed to recogni/ing and accommodating for behavioral characteristics of the species and through the use of sterile technique throughout the procedure. Issac L. Yates, Clifton J. Whitehead
Pages 348-355 |
1978 |
Deterioration Rates Of 35 Bobwhite Quail Foods And Their Preferential Use Deterioration of 35 bobwhite quail (Colinus virginianus) foods was measured during the fall and winters of 1974-1976 in the Coastal Plains of South Carolina. Poison ivy (Rhus radicans) and pokeberry (Phytolacca americana) seeds resisted deterioration, while soybeans ( G/ycine max) and mungbeans (Phaseolus sinuatus) deteriorated rapidly. Browntop millet (Panicum ramosum), proso millet (P. miliaceum), pearl millet (Pennisetum glaucum), and three Pinus sp. sprouted during winter. Quail preference for the 35 seeds was determined before and after 120 days of ground contact.
Pages 356-363 |
1978 |
An Improved X·ray Technique For Investigating Ingestion Of Lead By Waterfowl This study comparcs 3 techniques for their effectiveness in detecting lead shot in waterfowl gizzards. X-rays of gizzard contents are more accurate than either X-rays of whole gizzards or manual examination of contents. Manual examination missed 24% and X-rays of whole gi71ards missed at least 28%. The most accurate technique appears to be X-ray of contents with manual verification of all positive X-ray signatures. Frank Montalbano, Tommy C. Hines
Pages 364-368 |
1978 |
Nutria Pelt Damage From Bidens Laevis Nutria (Myocastor coypus) were collected monthly from June 1976 to December 1978 and examined for sores resulting from the awns of smooth beggartick (Bidens laevis). Nutria became infected in December and were heavily infected from January to March. Eleocharis spp. were the taxa most commonly found in association with Bidens laevis. Noel W. Kinler, Robert H. Chabreck
Pages 369-377 |
1978 |
Transmission Of Blackhead From Junglefowl To Turkey Results from experimental studies conducted on 2 southeastern game farms showed that the Indian Red Junglefowl (Gallus g. murghl) was a capable reservoir host for blackhead disease (histomoniasis, enterohepatitis), and indicated that some junglefowl released in range of the eastern wild turkey (Meleagris gallopavo silvestris) were carriers of blackhead. Since blackhead has been a major disease problem in southeastern wild turkey populations, the disease potential should be carefully considered prior to any future releases of junglefowl. Forest E. Kellogg, Thomas H. Eleazer, Thagard R. Colvin Pages 378-379 |
1978 |
Age And Growth Of Redeye Bass In Shoal And Little Shoal Creeks. Alabama The age and growth of red eye bass (Micropterus coosae) in Shoal Creek and Little Shoal Creeks, Alabama, were determined. Shoal Creek red eye bass, on the average, grew faster than red eye bass in other studies. Little Shoal Creek red eye bass grew slower during the first 6 years of life than redeye bass in other areas with the exception of redeye bass in Sheed's Creek, TN; however, by age VII Little Shoal Creek red eye bass were slightly larger than Shoal Creek red eye bass.
Pages 380-390 |
1978 |
Age-growth relationships, length-weight relationships, and relative abundance ind ices were determined for largemouth bass (Micropterus salmoides) collected from the Cape Fear, Chowan, Pasquotank and Tar-Pamlico river systems in North Carolina during 1976. Largemouth bass in the Pasquotank River had the highest mean annual growth rate during their first and second years when compared to those in the other river systems studied. Largemouth in the Tar-Pamlico River system had the highest mean annual growth rates for age groups III and older. C. R. Guier, W. G. Miller, A. W. Mullis, L. E. Nichols
Pages 391-400 |
1978 |
Effects Of Rotenone On Macrobenthic Invertebrates Of A Pennsylvania Stream Although the use of rotenone as a fish toxicant is a common freshwater fisheries management technique, little is known of its effect on stream invertebrates. In this study pre- and post-treatment bottom samples of benthic invertebrates, collected from 4 study stations, were compared to determine the short-term effects of rotenone. Continuous drift sample~ collected throughout the treatment period provided additional qualitative information on the vulnerability of the benthic invertebrates to the toxin.
Pages 401-408 |
1978 |
Early Piscivory In Postlarvae Of The White Bass Gut content analysis of postlarval white bass (Morone chrysops) collected from the Ohio River near Louisville, Kentucky, revealed that prolarval carp (Cyprinus carpio) were the major food item for postlarvae of 7-12 mm standard length (SL), although no larval fish were found in the stomachs of postlarvae 12-13 mm SL. The frequency of occurrence of zooplankton (primarily copepods and cladocerans) in the diet increased steadily from 20 to 100% as the post larvae grew from 6.5 to 13.0 mm SL. The ecological implications of such early piscivory are discussed. Aaron L. Clark, William D. Pearson
Pages 409-414 |
1978 |
Influence Of Ammonia On Aeromonad Susceptibility In Channel Catfish The effects of unionized ammonia on Channel catfish (lctalurus punctatus) resistance to aeromonad invasion were tested. Host susceptibility to Aeromonas hydrophila was related to ammonia concentration and time of exposure. Numbers of bacteria recovered from host livers increased as concentrations of un-ionized ammonia were increased in the range of 0.02-0.04 mgj I NH,. The effect of longer exposure time at these concentrations also proved to be significant (P <0.0 I) in lowering host resistance.
Pages 415-419 |
1978 |
Phenotypic Correlations Between Commercial Characters In Channel Catfish Estimates of correlation from channel catfish (Ictalurus punctatus) sib-families reared in intensively stocked tanks showed that it is possible to predict the family influence in market body weight from body weight data taken as early as 4 weeks. Survival during the first 15 weeks was highly correlated with body weights or lengths from 4 'to 12 weeks. Food conversion during the period 20 to 40 weeks was highly correlated with body weights between 16 and 56 weeks. Hussein M. El-Ibiary, Thomas K. Hill, John A. Joyce, James W. Andrews
Pages 420-425 |
1978 |
Feeding Of Channel Catfish Fingerlings In Mild And Severe Winters In Mississippi A feeding study with channel catfish fingerlings (Ictalurus punctatus) was conducted in the winters 1975-76 and 1977-78, a mild and severe winter, respectively. In both years, fish in 3 ponds were fed 3 days per week and fish in 3 ponds were fed 6 days per week. In the 1975 study, fish fed 3 and 6 days per week averaged 10% and 45% weight gain with a mean feed conversion of 2.63 and 2.90, respectively; fish fed 6 days per week had significantly (p < .10) greater weight gains than the fish fed 3 days per week. Roland E. Reagan, H. Randall Robinette
Pages 426-428 |
1978 |
Exploitation And Mortality Of Largemouth Bass In Lake Tobesofkee, Georgia Estimates of mortality and survival obtained from angler tag returns over a 10month period following tagging were used to define the population changes that occurred in the largemouth bass (Micropterus salmoides) population of Lake Tobesofkee. Total mortality (A) of 30-cm and larger fish over the period was estimated at 0.911 and the exploitation rate (u) of these sizes was 0.564. The conditional rate of natural mortality was 0.602. These estimates were used to predict the relative abundance of various sizes of largemouth based on 1977 harvest and abundance data.
Pages 429-436 |
1978 |
The population of largemouth bass (Micropterus salmoides) in 2314-ha Melton Hill Reservoir, TN, was estimated by 2 mark and recapture methods. Shoreline electrofishing was used to capture fish for marking, while shoreline electrofishing and a bass fishing tournament were used to obtain recaptures. Both methods yielded estimates of the same magnitude; however, slightly different size selectivities were found with the 2 recapture methods. Species selectivity of shoreline electrofishing and the bass tournament are also compared. William M. Seawell, Kerry W. Hevel
Pages 437-445 |
1978 |
Comparison Of Bass Club Records With Creel Censuses Bass club catch records from tournaments held on Norris. Douglas, and Cherokee Reservoirs during 1976 were compared with creel censuses. While not statistically significant, both numbers and weights per hour of bass caught by tournament anglers were less than catch rates by nontournament fishermen. Average weight of bass caught in tournaments was higher than that found in creel censuses. Some advantages of using tournament catch records in evaluating bass fisheries are discussed. C. Michael Alexander, John A. Holbrook, ll
Pages 446-448 |
1978 |
A tag-and-reward procedure was used to estimate exploitation rates of black bass (Micropterussp.) during 1975 and 1976 in Center Hill Reservoir, Tennessee. Returns of reward tags by anglers indicated annual exploitation rates of 13.3 (22.2%) for largemouth ·(M. saltnoides), [2.9 (15.6%) for smallmouth (M. dolomieUl) and [4.8 (18.5%) for spotted bass (M. punctulatus). Within each year, exploitation rates were not significantly different between species or size groups. Rates were lower in 1976 than in [975 for all species, but the difference was significant only for largemouth bass. D. M. Yeager, M. J. Van Den Avyle
Pages 449-458 |
1978 |
Recreational Use Of Thomas Hill Reservoir And Adjoining Lands An estimate of the total recreational use of the Thomas Hill Wildlife Area (1,778 ha reservoir and 2,424 ha of adjoining lands) in northern Missouri was made from I July 1972 to 30 June 1974. Recreational activity was determined by interviewing departing recreationists utilizing the non-uniform probability sampling technique. There were an estimated 219,700 recreational trips totaling 1,398,900 hours during the 2-year study. Twenty-two recreational activities were measured. Willis D. Hanson, Joe. G. Dillard
Pages 459-469 |
1978 |
Extent And Severity Of Avian Predation At Federal Fish Hatcheries In The United States A survey of Federal fish hatcheries in the United States was conducted to determine the extent and severity of avian predation on fish stocks as well as to determine which avian species were the most serious predators. A list of 58 bird species in 14 families was provided. Managers of hatcheries were asked to indicate which species or members of what family caused problems by predation in their hatcheries. They were asked to provide their estimate of the severity of the problem; i.e. severe, significant, trivial, or none. Patrick F. Scanlon, Louis A. Helfrich, Ralph E. Stultz
Pages 470-473 |
1978 |
Sampling Of Reservoir Fish Populations With Rotenone In Littoral Areas A method of sampling fish populations in the littoral area of reservoirs was developed to estimate the number and standing stock of young-of-the-year (YOY) and adult fishes in West Point Reservoir, Alabama-Georgia. A surface area of 0.0 I ha was surrounded with a net (30.5 m x 2.7 m) and the fish were poisoned with rotenone. The sample sites were chosen randomly by using a grid system. The average monthly standing stock (kg/ hal from April to September 1977 ranged from 74.2 in September to 126.1 in June. Tom J. Timmons, W. L. Shelton, W. D. Davies
Pages 474-484 |
1978 |
Food of larval (5.0-10.9 mm, TL) black crappies (Pomoxis nigromaculatus) from Keowee Reservoir, SC, was determined in 1973, before commercial power generation began from a 2,580-MW nuclear power plant, and in 1976 after 3 years of commercial power generation. Although water temperatures were higher in 1976 than in 1973, food of the larvae appeared to be unchanged by operation of the plant. The principal organisms eaten were Diaphanosoma sp._and copepod nauplii.
Pages 485-489 |
1978 |
Production Of Gulf Killifish In Brackish·water Ponds Production of gulf killifish (Fundulus grandis) was investigated from 17 November 1977 to 10 July 1978 in 0.08 ha, brackish-water, earthen ponds at the Claude Peteet Mariculture Center. Gulf killifish averaging 30.7 g and stocked at 12,500fishjha deposited eggs on Spanish moss spawning mats from 21 March through 16 May 1978. Fifty mats with eggs were transferred to a hatching pond which yielded 82,500 juvenile killifish averaging 0.1 g at harvest on 16 May. Walter M. Tatum, William C. Trimble, Robert F. Helton, Jr.
Pages 502-508 |
1978 |
Minimum Size Limits For Reef Fishes Implementation of minimum size limits is an administratively simple method of maximizing yield-per-recruit and, probably, total yield from reef fisheries. However, size limits may not guarantee ample escapement to older ages and, consequently, adequate reproduction of those species which undergo sex reversal. Further, size limits may place unnacceptably severe restriction on certain portions of reef fisheries. Finally, most undersize reef fishes taken by hook and line from deep water will likely die of injuries caused by pressure change. Gene R. Huntsman, Charles S. Manooch, lll
Pages 509-513 |
1978 |
Depuration Of Kepone By Atlantic Croaker In A Laboratory Study Contamination of the James River in Virginia by the organochlorine pesticide Kepone R prompted depuration studies of commercially important species. Approximately 400 croaker (Micropogonias undulatus) were taken from the James River and placed in Kepone-free York River water. Groups of 20 fish, maintained at ambient temperature, were sampled over time to determine depuration rate. Results suggest that there is no substantial depuration of Kepone by croaker until water temperature exceeds 15 C. Robert T. Doyle, J. V. Merriner, M. E. Bender
Pages 514-516 |
1978 |
The Roller-Net: A New Marine Sampling Gear The roller-net, a new fisheries sampling gear incorporating features common to the pushnet and bag seine, is described. The roller-net is compared with nearshore gear types, including pushnet, bag seine, and minnow seine, in beachfront, grassbed, barren sand-shell, and soft organic substrates. The roller-net is effective in sampling nekton from grassbed and barren sand-shell substrates, but ineffective in characterizing beachfront and soft organic substrates. Edward L. Beene, Andre M. Landry, Jr. Pages 517-519 |
1978 |
Currituck Sound Fish Populations Before And After Infestation By Eurasian Water·milfoil Data collected from rotenone samples of 3 coves before (1959-65) and after (1977) infestation by Eurasian water-milfoil (Myriophyllum spicatum) were compared to document changes in the fish populations. Using the mean of the 3 areas for comparison, both weight and number per hectare increased after water-milfoil infestation. The average weight per individual decreased from 0.02 kg (1959-65) to 0.008 kg (1977). The species were separated into 7 groups. Six of the groups had higher mean numbers per hectare and all groups had higher mean weights per hectare. James C. Borawa, J. Howard Kerby, Melvin T. Huish, Anthony W. Mullis
Pages 520-528 |
1978 |
Initial Power Plant Effects On Fish Distribution In A Small Florida Estuary The distributional responses of fishes to operation of a newly constructed power plant were assessed for indigenous populations of the Anclote Anchorage and River, Florida. Studies conducted during 1976 compared stations removed from potential plant effects with data collected from areas adjacent to plant intake and discharge. Comparisons were also made with preoperational information collected in the vicinity of the Anclote site.
Pages 529-546 |
1978 |
Food Habits Of Fishes Associated With Marshland Developed On Dredged Material The food habits of Micropogon undulatus, Leiostomus xanthurus, Fundulus similis. Cyprinodon variegatus. Menidia beryllina and Membras martinica were studied in conjunction with the development of a man-made salt marsh planted during 1976 on Bolivar Peninsula, Galveston Bay, TX. Each of the fishes studied fed to a considerable extent on the benthos community, and utilized at least some zooplanktonic and terrestrial insect foods. The dominant food organisms in the fish stomachs examined corresponded, in general, with those previously reported by other investigators. Robert R. Stickney, Robert B. McGeachin
Pages 547-560 |
1978 |
Distribution Of Striped Bass Eggs And Larvae In The Savannah River Estuary A tide gate on the Savannah Back River, constructed by U.S. Army Corps of Engineers, might decrease survival of the striped bass (Marone saxatilis) eggs and larvae spawned near Savannah, Georgia. An initial season of sampling, with the tide gate held open, yielded striped bass eggs and larvae both up- and downstream from the gate. The distribution of eggs and larvae under normal conditions was established. Maximum numbers of striped bass eggs did not reveal 21m 3 • Spawning occurred at temperatures between 17 and 23 C but 3 spawning peaks coincided with temperatures between 19.5 and 21 C. Richard G. Dudley, Kenneth N. Black
Pages 561-570 |
1978 |
Food Habits Of Adult Striped Bass From Keystone Reservoir And Its Tailwaters During 1974, 1975 and 1976, stomachs of 467 adult striped bass (Morone saxatilis) from Keystone Reservoir and its tailwaters were collected and examined for content. Gizzard shad (f)orosol11a cepedianum) was the most abundant food item found in striped bass stomachs. The relationship between the length of striped bass and the length of gizzard shad consumed was not significant (.05%). Seasonal and habitat variations in the diet were not significant (.05%).
Pages 571-575 |
1978 |
Between March and October 1977, methods of local commercial fishermen were simulated to evaluate species composition, catch rates, and potential impact of the commercial fishery on striped bass (Morone saxatilis) in 2 Tennessee River mainstream impoundments. Estimated total commercial harvest rates during the sampling period were 26.6 kg/ ha and 23.1 kg/ ha in Watts Bar and Chickamauga Reservoirs. FJ. F. Heitman, M. J. Van Den Avyle
Pages 576-587 |
1978 |
Evaluation Of Striped Bass X White Bass Hybrids In A Heated Texas Reservoir This study was conducted to identify habitat factors responsible for the success or failure of a striped bass (Morone saxatilis) x white bass (Morone chrysops) hybrid introduction and to measure fisherman benefits from the stocking. Hybrids were introduced into Lake Bastrop, Texas, at a rate of approximately 25 fish! ha in 1973, 1974, and 1975.
Pages 588-598 |
1978 |
Toxicity Of Ten Commonly Used Chemicals To American Eels Malachite green, potassium permanganate, salt, formalin, Dylox, Furanace, antimycin A, Noxfish, copper sulfate, and Diquat were tested to determine 96-hour LCso values for the glass eel stage ofthe American eel, Anguilla rostrata(Lesueur). Static acute toxicity tests were conducted at 22 C using deionized water reconstituted to a hardness of 40-48 mgfl, an alkalinity of 30-35 mg/ I and a pH of 7.2-7.6. Michael J. Hinton, Arnold G. Eversole Pages 599-604 |
1978 |
Hardness. Alkalinity, ph, And Pond Fertilization Many ponds in the southeastern United States have waters with less than 20 mg/ I total alkalinity and should be limed to insure good response to inorganic fertilization. Water analysis is the only technique for determining if a pond needs liming, and the liming rate can best be estimated from a lime requirement determination of the bottom mud. In some waters total alkalinity may be high, but total hardness low. Such waters frequently develop dangerously high pH when fertilized. Claude E. Boyd, James W. Preacher, Louis Justice
Pages 605-611 |
1978 |
Selenium Accumulation Associated With Fish Mortality And Reproductive Failure Fish populations of Belews Lake, North Carolina, declined during the period of operation of the Belews Creek Steam Station from 1974 through 1977. Reproduction of fish in the main lake was almost completely absent in 1976 and 1977. A survey of trace elements in water and fish fro.m Belews Lake indicated that selenium concentrations were elevated in Belews Lake water, and that fish in the lake had accumulated unusual amounts of selenium. Peter M. Cumbie, Scott L. Van Horn
Pages 612-624 |
1978 |
Intragravel Characteristics In Some Western North Carolina Trout Streams Characteristics of the intragravel environment of Southern Appalachian trout streams have not been studied. It was the purpose of this study to measure intragravel ~ermeability,apparent velocity, temperature, dissolved oxygen, and bottom composition in areas that visually appeared suitable for trout spawning in 8 relatively undisturbed streams in the Pisgah National Forest of western North Carolina. Comparisons were made between these measurements and the development requirements of salmonid embryos.
Pages 625-633 |
1978 |
Comparison Of Rotenone And Electrofishing Population Estimates To Lake Draining The results from cove rotenone sampling and electrofishing population estimates for largemouth bass (Micropterus sa!moides) were compared with the total largemouth bass populations obtained through draining of Sherwood Lake, a 67 ha impoundment in southeastern West Virginia. Rotenone samples over-estimated all size groups of largemouth bass (fingerling, intermediate and harvestable) both in number and weight. Electrofishing (Schnabel population estimates) more closely represented the numbers and weight of largemouth bass recovered at the lake draining.
Pages 634-638 |
1978 |
Beach Zone Fish Community Structure In the James River, Virglnia A seining survey of the fish fauna of the beach zone in the James River, Virginia, was conducted from July to December 1977. Weekly collections were made at 4 stations resulting in the capture of 17,602 individuals representing 36 species. Abundance and diversity were influenced by large catches ofschooling and migratory species utilizing nearshore areas as a nursery ground. Freshwater species diversity peaked in August and September, while mesohaline species diversity peaked in July, September, and November. Douglas W. Lipton, Jack G. Travelstead
Pages 639-647 |
1978 |
Deterioration Of Floy FD-67 Internal Anchor Tags Yellow Floy FD-67 internal anchor tags were utilized in an experimental and field study of tag discoloration, tag legibility and fouling organisms. Most tags exhibited some degree of discoloration over time. The rate and extent of discoloration varied between two batches of tags purchased in different years. The legibility of a tag was not affected to a great extent by the degree of discoloration. Legends of some completely discolored tags were still readable. Fouling organisms eroded the vinylite covering and deteriorated the legends of some tags. M. Y. Hedgepeth, W. H. Kriete, Jr., J. V. Merriner
Pages 648-656 |
1978 |
Comparison Of Attitudes Of Average Fishermen And Fishing Club Members A telephone survey was conducted of a stratified, random sample of people holding Florida fishing licenses and of a random sample of members of selected fishing clubs. Questions were asked concerning demographic characteristics, their fishing habits and preferences, opinions about the Florida Game and Fresh Water Fish Commission and its projects, and their sources of information on freshwater fishing topics. A statistically significant difference was found between the responses of the average fishermen and the fishing club members in 72% of the questions asked in the survey. Thomas R. King, R. Raymond Thompson, Jon C. Buntz
Pages 657-665 |
1978 |