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Articles 21751 - 21780 of 27511
Full-Text Articles in Entire DC Network
Food Supply And Nest Timing Of Broad-Tailed Hummingbirds In The Rocky Mountains, Nickolas M. Waser
Food Supply And Nest Timing Of Broad-Tailed Hummingbirds In The Rocky Mountains, Nickolas M. Waser
Condor
No abstract provided.
Communication Among Herring Gulls, Christine Lehman
Communication Among Herring Gulls, Christine Lehman
Delaware Ornithologist
No abstract provided.
Summary Of Meetings, Esther B. Speck
Birds Of Pampa Galeras, Peru, Howard P. Brokaw
Birds Of Pampa Galeras, Peru, Howard P. Brokaw
Delaware Ornithologist
No abstract provided.
The Distribution Of The Fauna In The Interstitial Habitats Of Riverine Sediments Of The Danube And The Piesting (Austria), Dan L. Danielopol
The Distribution Of The Fauna In The Interstitial Habitats Of Riverine Sediments Of The Danube And The Piesting (Austria), Dan L. Danielopol
International Journal of Speleology
The interstitial fauna living in the riverine sediments of the Danube and Piesting have been investigated in Lower Austria. The nematodes, oligochaetes and cyclopoids are the most abundant groups (they represent up to 80% of the total fauna). The harpacticoids, the insect larvae, the isopods, the amphipods, the cladocera and the limnohalacarids are poorly represented (generally under 20% of the total fauna). The absence of hydrachnellids is striking. The vertical distribution of the interstitial fauna shows for several groups i.e. limnohalacarids, ostracods, isopods, harpacticoids, that the epigean species are quantitatively better represented in the upper sediment layers instead of the …
Studies On Subterranean Drift Of Stygobiont Crustaceans (Niphargus, Crangonyx, Graeteriella), Siegfried Husmann
Studies On Subterranean Drift Of Stygobiont Crustaceans (Niphargus, Crangonyx, Graeteriella), Siegfried Husmann
International Journal of Speleology
In two groundwater canals of a water work in West Germany the drift of stygobiont groundwater organisms was investigated. The collections were made at two-hour intervals. Niphargus aquilex Schiodte, Crangonyx subterraneus Bate and Graeteriella unisetigera (Graeter) were considered more closely, because they were caught in greater numbers than other organisms. These stygobionts show no sign of dial periodicity.
An Introduction To The Japanese Groundwater Animals With Reference To Their Ecology And Hygienic Significance, Kôichi Matsumoto
An Introduction To The Japanese Groundwater Animals With Reference To Their Ecology And Hygienic Significance, Kôichi Matsumoto
International Journal of Speleology
1) Nearly two hundred species of troglobites are known from the groundwaters of Japan. Most of these troglobiontic species, sixteen of seventy-seven genera, and what is more, four of forty-seven families are endemic to Japan. Uchidastygacaridae, Nipponacaridae, and Kantacaridae are endemic acaridan families of Japan. The coleopterous family, Phreatodytidae, is alto endemic to Japan. 2) Though studies on Protozoa, Turbellaria, Annelida, Aschelminthes, and Ostracoda, etc. remain sparse, the interstitial fauna is actively investigated recently and many specimens of Bathynellacea, Ingolfiella, Bogidiella, Microcerberus, Pseudovermis (Opisthobranchia), and Nerillidae, etc. have been collected from freshwater and marine environments. 3) None of the troglobites …
New Data On The Foraminifera Of The Groundwaters Of Middle Asia, V. I. Mikhalevich
New Data On The Foraminifera Of The Groundwaters Of Middle Asia, V. I. Mikhalevich
International Journal of Speleology
New data obtained during the expedition to Middle Asia (1973) essentially enlarge our knowledge of foraminifera living in underground waters. Seven new species were discovered in the wells of the Kara-Kum and Ust-Urt deserts. All of them contain cytoplasma. The wells are situated in the region of bedding of underground waters of the heightened salinity in the zone of balance of runoff and evaporation. The majority of the species described in our work like many of the species recorded from the underground waters earlier (Brodsky, 1928; Nikoljuk, 1968; Jankovskaja and Mikhalevich, 1972) belong to the genera living in coastal brackish …
Die Tierische Besiedlung Des Hyporheischen Interstitials Eines Urgebirgsbaches Unter Dem Einfluß Von Allochthoner Nährstoffzufuhr, Hans-Gerd Pieper
Die Tierische Besiedlung Des Hyporheischen Interstitials Eines Urgebirgsbaches Unter Dem Einfluß Von Allochthoner Nährstoffzufuhr, Hans-Gerd Pieper
International Journal of Speleology
The Mettma, a mountain stream in the Black Forest, W. Germany, was investigated for effects of input of nutrients and energy by domestic waste water and effluent from a brewery introduced at one specific point. The investigation time ranged from May 1970 to February 1971. Initially, there is an impoverishment and structural changes of the biocoenosis in the hyporheic interstitial. There is an almost complete O2-depletion immediately after the waste water has been added. In winter, temperatures in the interstitial were higher than those in the current. No direct correlation between population densities and amount of organic matter …
Recent Karyological Research On Cave Planarians From Europe, Nicole Gourbault
Recent Karyological Research On Cave Planarians From Europe, Nicole Gourbault
International Journal of Speleology
Very few studies have been involved with karyology in Planarian living in total darkness. The first results indicate however, that most of the hypogeous Paludicoles have a diploid chromosome number notably superior to the similar surface forms. In another connection a relative uniformity of the morphology of the chromosome is observed in the same group, so that the studied karyotypes show a similar general aspect.
Les Adaptations À La Volvation Du Squelette Externe De La Tête Chez Caecosphaeroma Burgundum Dollfus, Crustacé Isopode Des Eaux Souterraines, C. Marvillet
International Journal of Speleology
The study of the cephalic capsule of Caecosphaeroma burgundum, a subterranean waters Isopod, demonstrates improved adaptations to volvation; these concern in a similar manner the other regions of the body, particularly the pleotelson. From a primitive aquatic Isopod structure, the head of this blind Spheromid has been completely fashioned by many mechanical factors: posterior margin of pleotelson providing support on the head, relation of anterior angles of the second pereionit and, above all, the mandibular palps and antennae which retract into two deep grooves of the face. The comparative study of the head of other volvational Isopods shows the …
Draft, Florida Field Naturalist, Volume 4, No. 2, Fall 1976, Florida Ornithological Society
Draft, Florida Field Naturalist, Volume 4, No. 2, Fall 1976, Florida Ornithological Society
Florida Ornithological Society - Records - Full Collection
A draft of the Fall 1976 issue of the Florida Field Naturalist journal.
La Dynamique De Population De L'Isopode Proasellus Slavus Ssp.N. Et Les Larves De Chironomides Dans L'Hyporhéique De La Drave Du Point De Vue De La Pollution, Milan Meštrov, Romana Lattinger-Penko, Vlatka Tavčar
La Dynamique De Population De L'Isopode Proasellus Slavus Ssp.N. Et Les Larves De Chironomides Dans L'Hyporhéique De La Drave Du Point De Vue De La Pollution, Milan Meštrov, Romana Lattinger-Penko, Vlatka Tavčar
International Journal of Speleology
If we sum up the data and observations derived from our researches on the Drava river, we conclude after consideration of surface water fauna and after comparison of chemical parameters that it influences the hyporheic water of a rough gravel-sandy alluvium more than 2 m deep, while in the compact sandy substratum it has less influence. The next conclusion is that the horizontal and vertical distribution of Proasellus slavus ssp.n. in the alluvium of the Drava river, depends upon the granulation of substratum, with reference so the largeness of interstices; that the populations vary in density and structure according to …
The Effect Of Cave Entrances On The Distribution Of Cave-Inhabiting Terrestrial Arthropods, Stewart B. Peck
The Effect Of Cave Entrances On The Distribution Of Cave-Inhabiting Terrestrial Arthropods, Stewart B. Peck
International Journal of Speleology
Populations of cave invertebrates are generally considered to be food-limited. The cave entrance is a major source of food input into the community in the form of decaying organic matter. Thus, the densities of scavenging terrestrial cave invertebrates should be related to the distance from the cave entrance because this represents a measure of food abundance. A test showed this expectation to be true in Crossings Cave, Alabama. A population density peak occurred 10 m inside the cave where the dark zone and detritus infall regions meet. The greatest population peak occurred at 100 m where densities of crickets and …
Research Proposal, National Audubon Society, Metal Pollutants In Tampa Bay, Florida, January 1, 1976, National Audubon Society
Research Proposal, National Audubon Society, Metal Pollutants In Tampa Bay, Florida, January 1, 1976, National Audubon Society
Audubon Florida Coastal Islands Sanctuaries - Records
A research proposal by the National Audubon Society entitled "Fate of Heavy Metal Pollutants in a Sub-tropical environment (Tampa Bay) and Feasibility of Using Contaminated Maintenance Spoil for Restoration of Salt Marshes".
Niugini Caver, Volume 3, No. 4, December 1975, R. Michael Bourke
Niugini Caver, Volume 3, No. 4, December 1975, R. Michael Bourke
KIP Articles
Contents: Toktok Bilong Edita: Sampela Ol Liklik Tinktink Nabaut -- Participants Required for Lelet Expedition -- The New Contributors -- Jumars Available -- Preliminary Results from the British Speleological Expedition to Papua New Guinea -- New Guinea 75: British Speleological Expedition to Papua New Guinea: An Account of the Reconnaissance in the Hindenburg Ranges and ARea -- Cavonact 76 -- Some Legends, a Cave Art Site, Burial Caves and Rock Shelters with Possibly Archaeological Potential in the Telefomin Area of the West Sepik and Western Provinces -- Some Cave Sites in the Enga Province -- Papua New Guinea Karst Types. …
The Texas Caver, Volume 20, No. 12, December 1975, James Jasek
The Texas Caver, Volume 20, No. 12, December 1975, James Jasek
The Texas Caver
Contents: Schertz Cibolo Cave - Jame Jasek -- Surprise Cave: James Jasek -- Map: Schertz Cibolo Cave -- Map: Surprise Cave -- Accident Report: Ed Gelsone -- Cavernicole Corner: William Elliott -- The Editor Speaks -- Zilch Cave: James Jasek -- Government Canyon Bat Cave Map: H. Jasek -- Map: Zlich Cave -- Map: Government Canyon Bat Cave -- Kick Back -- Oglesby Caverns: James Jasek -- Map: Oglesby Caverns -- Flash Reflectors: Roger Bartholomew -- Trip Reports -- Multiple Flash: James Jasek -- Devil's Lane: James Jasek -- Red Arrow: James Jasek -- A Salute: Dale Pate -- The …
Ornithological Literature, Wilson Bulletin
Wildlife Occupying Potential Wood Duck Tree Nest Sites, Roger L. Boyer
Wildlife Occupying Potential Wood Duck Tree Nest Sites, Roger L. Boyer
Wilson Bulletin
No abstract provided.
An Optical Scope For Examining Nest Contents Of Tunnel-Nesting Birds, Natalie J. Demong, Stephen T. Emlen
An Optical Scope For Examining Nest Contents Of Tunnel-Nesting Birds, Natalie J. Demong, Stephen T. Emlen
Wilson Bulletin
No abstract provided.
Do Birds Enjoy Singing? (An Ornitho-Philosophical Discourse), Charles Hartshorne
Do Birds Enjoy Singing? (An Ornitho-Philosophical Discourse), Charles Hartshorne
Bulletin of the Texas Ornithological Society
No abstract provided.
A Listing Of County Records For Bird Specimens In The Texas Cooperative Wildlife Collections Not Reported In Oberholser's 'The Bird Life Of Texas', Albert L. Barr, Keith A. Arnold, Stephen F. Holm
A Listing Of County Records For Bird Specimens In The Texas Cooperative Wildlife Collections Not Reported In Oberholser's 'The Bird Life Of Texas', Albert L. Barr, Keith A. Arnold, Stephen F. Holm
Bulletin of the Texas Ornithological Society
No abstract provided.
Prey Selection And Caloric Ingestion Rate Of Captive American Kestrels, Gary W. Barrett, Carl V. Mackey
Prey Selection And Caloric Ingestion Rate Of Captive American Kestrels, Gary W. Barrett, Carl V. Mackey
Wilson Bulletin
No abstract provided.
Geographic Variation In Wing-Loading Of The House Sparrow, Charles R. Blem
Geographic Variation In Wing-Loading Of The House Sparrow, Charles R. Blem
Wilson Bulletin
No abstract provided.
Proceedings Of The Fifty-Sixth Annual Meeting, James Tate Jr.
Proceedings Of The Fifty-Sixth Annual Meeting, James Tate Jr.
Wilson Bulletin
No abstract provided.
Egg-Laying, Egg Size, And Success In Relation To Immature-Mature Plumage Of Ring-Billed Gulls, John P. Ryder
Egg-Laying, Egg Size, And Success In Relation To Immature-Mature Plumage Of Ring-Billed Gulls, John P. Ryder
Wilson Bulletin
No abstract provided.
The Oracle, November 21, 1975, Matt Bokor
The Oracle, November 21, 1975, Matt Bokor
The Oracle (Print Editions)
The November 21, 1975, issue of The Oracle. Misprinted as November 20, 1975.
The Oracle, November 20, 1975, Matt Bokor
The Oracle, November 20, 1975, Matt Bokor
The Oracle (Print Editions)
The November 20, 1975, issue of The Oracle.
The Oracle, November 19, 1975, Matt Bokor
The Oracle, November 19, 1975, Matt Bokor
The Oracle (Print Editions)
The November 19, 1975, supplemental issue of The Oracle.
The Oracle, November 19, 1975, Matt Bokor
The Oracle, November 19, 1975, Matt Bokor
The Oracle (Print Editions)
The November 19, 1975, issue of The Oracle.