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Articles 34561 - 34590 of 43019
Full-Text Articles in Entire DC Network
Yellow-Throated Vireo Nests In West-Central Florida, Florida Field Naturalist
Yellow-Throated Vireo Nests In West-Central Florida, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Bird Use Of A North-Central Florida Phosphate Mine, David S. Maehr
Bird Use Of A North-Central Florida Phosphate Mine, David S. Maehr
Florida Field Naturalist
No abstract provided.
A Lesser Nighthawk In Northwestern Florida, Florida Field Naturalist
A Lesser Nighthawk In Northwestern Florida, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Theory And Research In Social Education, Volume 8, No. 4, Winter 1981, Thomas S. Popkewitz
Theory And Research In Social Education, Volume 8, No. 4, Winter 1981, Thomas S. Popkewitz
Theory and Research in Social Education
No abstract provided.
Large-Scale Operations Management Test Of Use Of The White Amur For Control Of Problem Aquatic Plants. Report 2. First Year Poststocking Results. Volume Iii. The Plankton And Benthos Of Lake Conway, Florida, Thomas Crisman, Floor M. Kooijam, University Of Florida, Department Of Enviromental Engineering Sciences
Large-Scale Operations Management Test Of Use Of The White Amur For Control Of Problem Aquatic Plants. Report 2. First Year Poststocking Results. Volume Iii. The Plankton And Benthos Of Lake Conway, Florida, Thomas Crisman, Floor M. Kooijam, University Of Florida, Department Of Enviromental Engineering Sciences
School of Geosciences Faculty and Staff Publications
No abstract provided.
Back Matter (Pdf), North American Bird Bander
Back Matter (Pdf), North American Bird Bander
North American Bird Bander
No abstract provided.
Back Matter (Pdf), North American Bird Bander
Back Matter (Pdf), North American Bird Bander
North American Bird Bander
No abstract provided.
Back Matter (Pdf), North American Bird Bander
Back Matter (Pdf), North American Bird Bander
North American Bird Bander
No abstract provided.
International Symposium On Groundwater Biology: Introduction, John R. Holsinger, Arthur L. Buikema Jr.
International Symposium On Groundwater Biology: Introduction, John R. Holsinger, Arthur L. Buikema Jr.
International Journal of Speleology
Short presentation of the Symposium on Groundwater.
Genetic Differentiation In Populations Of The Freshwater Amphipod Gammarus Minus Say In A Karst Area, Steven W. Hetrick, James L. Gooch
Genetic Differentiation In Populations Of The Freshwater Amphipod Gammarus Minus Say In A Karst Area, Steven W. Hetrick, James L. Gooch
International Journal of Speleology
The genetic makeup of populations in a particular geographic area should conform, in part, to environmental structure. Three polymorphic enzyme loci in the amphipod Gammarus minus are geographically differentiated in gene frequencies in the mid-Appalachian Mountains of the eastern United States, and genetic breaks usually coincide with topographical features and stream divides. Areas with well integrated drainage systems have a high degree of genetic uniformity.
Genetic Population Structure In An Amphipod Species, James L. Gooch, S. W. Golladay
Genetic Population Structure In An Amphipod Species, James L. Gooch, S. W. Golladay
International Journal of Speleology
Genetic structure of a species should conform, in part, to environmental structure. Three polymorphic enzyme loci in the amphipod Gammarus minus Say are geographically differentiated in gene frequencies in the mid-Appalachian Mountains of the eastern United States, and genetic breaks usually coincide with topographical features and stream divides. Considering alleles as migrational markers, it is expected that heterozygosity would decrease upstream in isolated drainage basins, increase in the headwaters of adjacent but oppositely flowing streams in which gene exchange was occurring between genetically differentiated populations, and increase in sites near regional master streams. These genetic patterns were found to exist …
Some Implications Of Competition For Cave Stream Communities, David C. Culver
Some Implications Of Competition For Cave Stream Communities, David C. Culver
International Journal of Speleology
Based on recent theoretical work by Robert May and Richard Levins, two hypotheses about time fluctuations in abundance of competing species were generated. Data for isopods and amphipods from four cave stream communities in Virginia and West Virginia were used to test the predictions. First, variance of total abundance should be less than the sum of the variances of individual species’ abundances. In three of four communities studied, the prediction was confirmed, but none were statistically significant. Positive correlations among carrying capacities of competing species may explain the poor agreement with predictions. Second, the signs of 19 correlations and partial …
Distribution And Habitat Diversity Of Subterranean Amphipods In The Rocky Mountains Of Colorado, U. S. A., James V. Ward, John R. Holsinger
Distribution And Habitat Diversity Of Subterranean Amphipods In The Rocky Mountains Of Colorado, U. S. A., James V. Ward, John R. Holsinger
International Journal of Speleology
Subterranean amphipods have been collected from 35 locations on the eastern and western slopes of the Continental Divide in Colorado. All belong to the exclusively subterranean genus Stygobromus. Five species have been identified, two of which are undescribed. Specimens have been collected from (a) the hyporheic zone of rivers, (b) interrupted streams, (c) springs, and (d) seeps at elevations from 1597-2134 m a.s.l. Stygobromus occurs in several habitat types in interrupted drainage basins including sources, seeps, and isolated pools containing leaf detritus. All habitats contained waters which were cool to cold with dissolved oxygen values ranging from 4.3 ppm …
Perspectives In The Study Of The Zoogeography Of Interstitial Crustacea: Bathynellacea (Syncarida) And Parastenocarididae (Copepoda), Horst Kurt Schminke
Perspectives In The Study Of The Zoogeography Of Interstitial Crustacea: Bathynellacea (Syncarida) And Parastenocarididae (Copepoda), Horst Kurt Schminke
International Journal of Speleology
Aspects of the zoogeography of Bathynellacea and Parastenocarididae are discussed in the light of my recent investigations. Parastenocarididae in Australia are rare and not very diverse in number of species. Four species belonging to three genera were collected on a tour through Australia in 1968. Despite relationships to species from other Gondwanian landmasses the poorness of the Australian fauna, together with the apparent ability of this family to spread over longer distances, suggest a late arrival of Parastenocarididae in Australia. Invasion is likely to have taken place from two directions. As for the Bathynellacea, the relationships presumed to exist between …
Distribution Of Ostracods In The Groundwater Of The North Western Coast Of Euboea (Greece), Dan L. Danielopol
Distribution Of Ostracods In The Groundwater Of The North Western Coast Of Euboea (Greece), Dan L. Danielopol
International Journal of Speleology
Freshwater fauna from 20 wells located 15-200 m from the seashore as well as marine interstitial fauna from the coastal zone around the village Aghios Georghios (Cape Likhada) have been investigated. Freshwater hypogean ostracods live mainly in protected wells having clean bottom and little particulate organic matter from which the water is moderately pumped. Epigean freshwater ostracods dominate in unprotected wells with large amounts of organic matter on the bottom. There is a sharp difference between the ostracod fauna living in fresh groundwater (mainly Cypridids) and those living in coastal marine interstitial habitats (marine Cytherids and Polycopids). It is suggested …
The Edwards Aquifer: Earth's Most Diverse Groundwater Ecosystem?, Glenn Longley
The Edwards Aquifer: Earth's Most Diverse Groundwater Ecosystem?, Glenn Longley
International Journal of Speleology
Recent studies on the Edwards Aquifer, a karstic formed cavernous system in Texas, indicate an extremely diverse community of aquatic troglobites. Sampling of wells and springs is providing new insight into the dynamics of this fascinating system, which is possibly the most diverse subterranean aquatic ecosystem known in the world today.
Investigation Of The Mutual Influence Between A Polluted River And Its Hyporheic, Milan Meŝtrov, Romana Lattinger-Penko
Investigation Of The Mutual Influence Between A Polluted River And Its Hyporheic, Milan Meŝtrov, Romana Lattinger-Penko
International Journal of Speleology
This paper describes investigations of fundamental biological and pratical importance. Interstitial subterranean water (hyporheic) which is near a polluted river in a plain is the subject of the study. The water is becoming increasingly important as a source of drinking water. The relation of the hyporheic water to the physical, chemical, bacteriological and faunistic characteristics of the river is discussed.
Investigations Of The Troglobitic Crayfish Orconectes Inermis Testii (Hay) In Mayfield's Cave, Monroe County, Indiana, H. H. Hobbs Iii
Investigations Of The Troglobitic Crayfish Orconectes Inermis Testii (Hay) In Mayfield's Cave, Monroe County, Indiana, H. H. Hobbs Iii
International Journal of Speleology
Mark-recapture studies of some aspects of the biology of the cavernicolous crayfish, Orconectes inermis testii (Hay), were conducted from December, 1969 to March, 1970, in Mayfield’s Cave, Monroe County, Indiana. Population size was estimated to be 66 +/- 9 (95% C.L.) for the 300 m study area, but because of the small sample size, this is undoubtedly a deflated value. Size of animals, expressed as total length, indicates that the population was comprised primarily of adults. Seventy-four percent of the marked crayfish moved no more than 10.5 m away (total upstream and downstream distances) from the tagging site. Hence, this …
Variation Among Populations Of The Troglobitic Amphipod Crustacean Crangonyx Antennatus Packard (Crangonyctidae) Living In Different Habitats, Iii: Population Dynamics And Stability, Gary W. Dickson, John R. Holsinger
Variation Among Populations Of The Troglobitic Amphipod Crustacean Crangonyx Antennatus Packard (Crangonyctidae) Living In Different Habitats, Iii: Population Dynamics And Stability, Gary W. Dickson, John R. Holsinger
International Journal of Speleology
Populations of the troglobitic amphipod Crangonyx antennatus from caves in Lee Co., Virginia (U.S.A.) were investigated on both a short and long term basis. The dynamics of populations living in two distinct aquatic cave habitats (mud-bottom pools and gravel-bottom streams) were compared seasonably for one year. Sex ratios indicated a larger number of females in both pool and stream habitats. The majority of males in both habitats were found to be sexually mature throughout the year investigated. Seasonal fluctuations in female maturity were observed in both habitats, with larger numbers collected in June and August. In addition, a larger number …
Letter, Thomas Savage To Fred Lohrer, December 17, 1980, Thomas Savage
Letter, Thomas Savage To Fred Lohrer, December 17, 1980, Thomas Savage
Florida Ornithological Society - Records - Full Collection
A letter from Thomas Savage of the Florida Department of Environmental Regulation about American kestrels.
Round Table Notes, Martha Waldron, Harry C. Yeatman, Stephen J. Steadman, Charles P. Nicholson
Round Table Notes, Martha Waldron, Harry C. Yeatman, Stephen J. Steadman, Charles P. Nicholson
The Migrant - Tennessee Ornithological Society
No abstract provided.
Intersexual Niche Partitioning In Downy Woodpeckers, Joseph B. Williams
Intersexual Niche Partitioning In Downy Woodpeckers, Joseph B. Williams
Wilson Bulletin
No abstract provided.
Index To Volume 92, 1980, Nancy J. Flood, Gary R. Bortolotti, David J. Brooks
Index To Volume 92, 1980, Nancy J. Flood, Gary R. Bortolotti, David J. Brooks
Wilson Bulletin
No abstract provided.
Male Escorting And Protecting Females At The Nest Cavity In Mountain Blue Birds, Harry W. Power
Male Escorting And Protecting Females At The Nest Cavity In Mountain Blue Birds, Harry W. Power
Wilson Bulletin
No abstract provided.
A Comparison Of Avian Foraging At Flowering Trees In Panama And New Guinea, Bruce Beehler
A Comparison Of Avian Foraging At Flowering Trees In Panama And New Guinea, Bruce Beehler
Wilson Bulletin
No abstract provided.
Team-Hunting And Food Sharing In Parasitic Jaegers, Stephen G. Pruett-Jones
Team-Hunting And Food Sharing In Parasitic Jaegers, Stephen G. Pruett-Jones
Wilson Bulletin
No abstract provided.
Back Matter (Pdf), Wilson Bulletin
Front Matter (Pdf), Wilson Bulletin
Notes On The Breeding Biology And Behavior Of The Ravens Of Peregrine Ridge, Great Smoky Mountains National Park, Tennessee, Morris D. Williams
Notes On The Breeding Biology And Behavior Of The Ravens Of Peregrine Ridge, Great Smoky Mountains National Park, Tennessee, Morris D. Williams
The Migrant - Tennessee Ornithological Society
No abstract provided.
Contents, Tennessee Ornithological Society
Contents, Tennessee Ornithological Society
The Migrant - Tennessee Ornithological Society
No abstract provided.