Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Arts and Humanities (1483)
- American Studies (1050)
- Life Sciences (930)
- Physical Sciences and Mathematics (842)
- Medicine and Health Sciences (603)
-
- Social and Behavioral Sciences (592)
- Education (393)
- Earth Sciences (372)
- Engineering (328)
- Biology (240)
- Environmental Sciences (205)
- Ecology and Evolutionary Biology (163)
- Biochemistry, Biophysics, and Structural Biology (162)
- Public Health (143)
- Psychology (134)
- Molecular Biology (125)
- Civil and Environmental Engineering (116)
- Medical Specialties (111)
- Feminist, Gender, and Sexuality Studies (108)
- Medical Sciences (106)
- Microbiology (101)
- Business (99)
- History (98)
- Other Education (95)
- Environmental Engineering (93)
- Anthropology (91)
- Oceanography and Atmospheric Sciences and Meteorology (91)
- English Language and Literature (90)
- Cell and Developmental Biology (88)
- Neurosciences (88)
- Keyword
-
- Dime novels (994)
- Newspapers (862)
- College student newspapers and periodicals (844)
- University of South Florida (813)
- Student newspapers and periodicals (786)
-
- Western stories (394)
- University of South Florida St. Petersburg (364)
- History (330)
- Regional speleology (316)
- Fiction (266)
- African-American newspapers, African Americans (238)
- American Revolution (1775-1783) (229)
- Science fiction (216)
- Technical speleology (176)
- Periodicals (160)
- Adventure stories (157)
- African Americans (123)
- African American newspapers (119)
- Geology (119)
- Tobacco (110)
- Buffalo Bill (1846-1917) (107)
- Tobacco use (107)
- Tobacco curing (106)
- Tobacco industry (106)
- Tobacco products (106)
- Inventors (105)
- Boys (101)
- Universities and colleges (99)
- Ornithology (95)
- Indigenous peoples (94)
- Publication Year
- Publication
-
- The Auk (4595)
- Condor (3481)
- USF Tampa Graduate Theses and Dissertations (2656)
- Wilson Bulletin (2085)
- Marine Ornithology (643)
-
- Journal of Raptor Research (602)
- Journal of Field Ornithology (571)
- KIP Articles (557)
- The Oracle (Print Editions) (491)
- USF Patents (491)
- Ornitología Neotropical (432)
- Wader Study Group Bulletin (426)
- Bird Banding (418)
- Bird Observer (413)
- North American Bird Bander (386)
- Monteverde Institute: Tropical Ecology and Conservation (373)
- International Journal of Speleology (348)
- Florida Field Naturalist (310)
- Studies in Avian Biology (297)
- Crow's Nest (295)
- American Birds (270)
- Weekly Challenger Newspaper Collection (257)
- Wild West Weekly (241)
- Liberty Boys of "76" (222)
- The Migrant - Tennessee Ornithological Society (219)
- Maryland Birdlife (189)
- Eastern Bird Banding Association News (177)
- Bulletin of the Texas Ornithological Society (163)
- The Texas Caver (156)
- Farid Karam M.D. Lebanon Antiquities Collection (145)
- Publication Type
- File Type
Articles 21301 - 21330 of 27519
Full-Text Articles in Entire DC Network
Studies Of The Cave Crayfish, Orconectes Inermis Inermis Cope (Decapoda, Cambaridae). Part Iv: Mark-Recapture Procedures For Estimating Population Size And Movements Of Individuals, Horton H. Hobbs Iii
Studies Of The Cave Crayfish, Orconectes Inermis Inermis Cope (Decapoda, Cambaridae). Part Iv: Mark-Recapture Procedures For Estimating Population Size And Movements Of Individuals, Horton H. Hobbs Iii
International Journal of Speleology
Several methods for permanently marking cavernicolous crayfishes were investigated prior to initiation of field work in Pless Cave, Lawrence County, Indiana. Internally injected ink complemented with external “painting” proved to be a most satisfactory tagging procedure. During the two-year study period 211 individuals of the troglobitic crayfish Orconectes inermis inermis Cope were marked; 96 tagged individuals were recaptured at least once, a 46% recapture rate. The population size was estimated to be 1586 +/- 79 (95% C.L.) over the 540 m subterranean stream study area and remained relatively stable during the period of 1970 to 1972. The home range of …
Roof-Nesting Terns, Skimmers, And Plovers In Florida, Erma J. Fisk
Roof-Nesting Terns, Skimmers, And Plovers In Florida, Erma J. Fisk
Florida Field Naturalist
No abstract provided.
Eastern Bluebird Mortality At Winter Roosts In Tennessee, T. David Pitts
Eastern Bluebird Mortality At Winter Roosts In Tennessee, T. David Pitts
Bird Banding
No abstract provided.
Analysis Of A Resident Flock Of Starlings, Hannah B. Suthers
Analysis Of A Resident Flock Of Starlings, Hannah B. Suthers
Bird Banding
No abstract provided.
Feeding Association Between Brown Pelicans And Wood Storks, Florida Field Naturalist
Feeding Association Between Brown Pelicans And Wood Storks, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Florida Birds In The Periodical Literature, 1977, Florida Field Naturalist
Florida Birds In The Periodical Literature, 1977, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
The Relation Of Breeding Schedule And Clutch Size To Food Supply In The Rufous-Sided Towhee, Jon S. Greenlaw
The Relation Of Breeding Schedule And Clutch Size To Food Supply In The Rufous-Sided Towhee, Jon S. Greenlaw
Condor
No abstract provided.
Recent Literature, Bird-Banding
Quebec Banded Wood Duck Recovered In Saba, Netherlands Antilles, R. D. Titman, G. A. Seaman
Quebec Banded Wood Duck Recovered In Saba, Netherlands Antilles, R. D. Titman, G. A. Seaman
Bird Banding
No abstract provided.
Comparison Of Breeding Bird Census Techniques, James G. Dickson
Comparison Of Breeding Bird Census Techniques, James G. Dickson
American Birds
No abstract provided.
Wading Bird Use Of The East Everglades, Florida Field Naturalist
Wading Bird Use Of The East Everglades, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Native Birds Of Lanai, Hawaii, Lawrence T. Hirai
Notes On The Breeding Birds Of Isla Raza, Baja California, Jeffery Boswall, Michael Barrett
Notes On The Breeding Birds Of Isla Raza, Baja California, Jeffery Boswall, Michael Barrett
Western Birds
No abstract provided.
Comments On The Status And Distribution Of Western And Mountain Bluebirds In Washington, Christopher J. Herlugson
Comments On The Status And Distribution Of Western And Mountain Bluebirds In Washington, Christopher J. Herlugson
Western Birds
No abstract provided.
White Pelicans Nesting At Honey Lake, California, Ian C. Tait, Fritz L. Knopf, Joseph L. Kennedy
White Pelicans Nesting At Honey Lake, California, Ian C. Tait, Fritz L. Knopf, Joseph L. Kennedy
Western Birds
No abstract provided.
Recent Publications On Waders, Wader Study Group Bulletin
Recent Publications On Waders, Wader Study Group Bulletin
Wader Study Group Bulletin
No abstract provided.
List Of The Members Of The Wader Study Group, Wader Study Group Bulletin
List Of The Members Of The Wader Study Group, Wader Study Group Bulletin
Wader Study Group Bulletin
No abstract provided.
Shorebird Studies At Manomet Bird Observatory, Massachusetts, Brian A. Harrington
Shorebird Studies At Manomet Bird Observatory, Massachusetts, Brian A. Harrington
Wader Study Group Bulletin
No abstract provided.
Effects Of Altered Photoperiod On Migratory Orientation In White-Throated Sparrows (Zonotrichia Albicollis), Larry J. Miller, Charles M. Weise
Effects Of Altered Photoperiod On Migratory Orientation In White-Throated Sparrows (Zonotrichia Albicollis), Larry J. Miller, Charles M. Weise
Condor
No abstract provided.
Hunting And The Energy Budget Of The Black-Shouldered Kite, Warwick R. Tarboton
Hunting And The Energy Budget Of The Black-Shouldered Kite, Warwick R. Tarboton
Condor
No abstract provided.
Oscine Spermatozoa: A Light - And Electron-Microscopy Study, Catherine Henley, Alan Feduccia, Donald P. Costello
Oscine Spermatozoa: A Light - And Electron-Microscopy Study, Catherine Henley, Alan Feduccia, Donald P. Costello
Condor
No abstract provided.
Nesting Responses Of Field Sparrows (Spizella Pusilla) To Plant Succession On A Michigan Old Field, Edward W. Evans
Nesting Responses Of Field Sparrows (Spizella Pusilla) To Plant Succession On A Michigan Old Field, Edward W. Evans
Condor
No abstract provided.
A Contribution To The Study Of The Genus Porrhomma (Araneae: Linyphiidae). Notes On A Population Of P. Egeria (Simon) And Other Cavernicolous Species, J. D. Bourne
International Journal of Speleology
A morphological and biometrical study of a population of Porrhomma egeria (Simon) has allowed to determine that P. moravicum (Miller and Kratochvil) and P. obambulatum (Kritscher) belong to the same species and should thus be considered synonymous. The importance of biometric studies for the study of this Genus is emphasised.
Carotenoids In Niphargus Casimiriensis Skalski (Amphipoda) From Artesian Wells, B. Czeczuga, A. Skalski
Carotenoids In Niphargus Casimiriensis Skalski (Amphipoda) From Artesian Wells, B. Czeczuga, A. Skalski
International Journal of Speleology
By means of columnar and thin-layer chromatography, the presence of carotenoids in Niphargus casimiriensis Skalski from an artesian well was studied. There are qualitative and quantitative differences in the carotenoid contents of the Niphargus casimiriensis Skalski specimens.
The Tegumental Glands Of A Troglobitic Crustacean, L. Juberthie-Jupeau, Y. Crouau
The Tegumental Glands Of A Troglobitic Crustacean, L. Juberthie-Jupeau, Y. Crouau
International Journal of Speleology
Tegumental glands, located in the antennae of Antromysis juberthiei are present in males and females; in the antennulae each of them consists of 3 cells: a secretory cell of large size, an intermediary cell and a canal cell probably secretory in nature. The canal cell possesses an extracellular cavity with deep infoldings and microvilli between which the canal crinkles along. The intermediary cell is heavily provided with microfilaments. The secretory granules have an organized content.
Spontane Und Induzierte Aktivitätsmuster Bei Troglobionten Käfern (Genera Aphaenops, Geotrechus, Speonomus), G. Lamprecht, F. Weber
Spontane Und Induzierte Aktivitätsmuster Bei Troglobionten Käfern (Genera Aphaenops, Geotrechus, Speonomus), G. Lamprecht, F. Weber
International Journal of Speleology
In Constant temperature the troglobite beetles Aphaenops cerberus and pluto, Geotrechus orpheus and Speonomus diecki are aperiodically active. By periodogram analysis neither circadian nor ultradian or infradian periodic components can be found. Moreover there are no relevant correlations between the lengths of successive activity bursts and rest pauses. Consequently the activity patterns are stochasticly structured. In cases with constancy of activity respectively rest behaviour the probabilities for the transition from activity to rest and from rest to activity are computed using the Frequency histograms of lengths of activity bursts and rest pauses. The transition probability is time-invariant if the …
Humidity Responses And The Role Of Hamann's Organ Of Cavernicolous Bathysciinae (Coleoptera Catopidae), Marco Lucarelli, Valerio Sbordoni
Humidity Responses And The Role Of Hamann's Organ Of Cavernicolous Bathysciinae (Coleoptera Catopidae), Marco Lucarelli, Valerio Sbordoni
International Journal of Speleology
The humidity responses of Bathysciola derosasi and Leptodirus hohenwarti, two species of troglobitic Bathysciinae showing different degrees of adaptation to cave environment, have been studied. Intact and antennectomised subjects were tested using choice-chambers with various combinations of relative humidity alternatives (i.e. 20-100%, 50-100%, 90-100%, 50-90% and, as controls, 100-100%) to investigate the role played by the sense organs situated on the 7th, 9th and 10th antenna segments. The results show that intact-antenna subjects of both species are very sensitive to humidity gradients and that their intensity of reaction varies according to the intensity of stimulus, as previously reported by …
Ostracodes Hypogés Du Sud De La France. 1. Mixtocandona Juberthieae N.Sp., Dan L. Danielopol
Ostracodes Hypogés Du Sud De La France. 1. Mixtocandona Juberthieae N.Sp., Dan L. Danielopol
International Journal of Speleology
The description of Mixtacandona juberthieae n.sp. is presented. The new species belongs to the group taurica and has been found in the karstic system of the Vidourle river at Sauve (Gard).
Un Batrachuperus Adulte Dans Une Grotte D'Iran Espèce Nouvelle?, M. Clergue-Gazeau, J. P. Farcy
Un Batrachuperus Adulte Dans Une Grotte D'Iran Espèce Nouvelle?, M. Clergue-Gazeau, J. P. Farcy
International Journal of Speleology
During a speleological exploration of a cave in Iran, a species of Urodele Hynobiidae was found. This Batrachian is either a new species of the genus Batrachuperus or an adult form of the species Batrachuperus persieus previously only described in its larval and juvenile forms. Certain observable differences suggest that it can be considered a new species. Observations on its feeding habits indicate that the presence of this periodic trogloxene in the cave is not “accidental”, but that it remains there for a long period during its life cycle.
The Discovery Of Proteus-Eggs (Proteus Anguinus Laurenti, Amphibia) In Seminatural Conditions, B. Sket, F. Velkovrh
The Discovery Of Proteus-Eggs (Proteus Anguinus Laurenti, Amphibia) In Seminatural Conditions, B. Sket, F. Velkovrh
International Journal of Speleology
Proteus-eggs were found for the first time in the nature, drifted out of a karstic spring. They were obtained from the Vir Spring al Sticna, 30 km ESE of Ljubljana. The hydrological and faunistical data indicate that Proteus lays its eggs also in “unsheltered”, energetically rich groundwater habitats.