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Articles 36541 - 36570 of 42912
Full-Text Articles in Entire DC Network
Prevalence Of Bill Abnormalities In Florida Brown Thrashers, Florida Field Naturalist
Prevalence Of Bill Abnormalities In Florida Brown Thrashers, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Report Of Fall Meeting, Florida Field Naturalist
Report Of Fall Meeting, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Summer Records Of The Marsh Hawk In Florida, Florida Field Naturalist
Summer Records Of The Marsh Hawk In Florida, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Notice, Florida Field Naturalist
Black Phoebe Sighted At Dry Tortugas, Florida Field Naturalist
Black Phoebe Sighted At Dry Tortugas, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
News And Notes, Florida Field Naturalist
News And Notes, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Request For Information, Florida Field Naturalist
Request For Information, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Minutes Of The 1976 Spring Meeting, Florida Field Naturalist
Minutes Of The 1976 Spring Meeting, Florida Field Naturalist
Florida Field Naturalist
No abstract provided.
Groundwater Inhabitants In Poland, Andrzej W. Skalski
Groundwater Inhabitants In Poland, Andrzej W. Skalski
International Journal of Speleology
This paper states the present progress achieved in research regarding the ground-water fauna of Poland.
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 …
Body Size And Longevity In Birds, William A. Calder
A Comparison Of Some Aspects Of The Breeding Ecology Of Red-Headed And Red-Bellied Woodpeckers In Kansas, Jerome A. Jackson
A Comparison Of Some Aspects Of The Breeding Ecology Of Red-Headed And Red-Bellied Woodpeckers In Kansas, Jerome A. Jackson
Condor
No abstract provided.
Digestion Of Dry Matter And Absorption Of Water In The Intestine And Cecum Of Rock Ptaremigan, William C. Gasaway, Robert G. White, Dan F. Holleman
Digestion Of Dry Matter And Absorption Of Water In The Intestine And Cecum Of Rock Ptaremigan, William C. Gasaway, Robert G. White, Dan F. Holleman
Condor
No abstract provided.
Prolonged Parental Care In The Sooty Tern And Brown Noddy, William Y. Brown
Prolonged Parental Care In The Sooty Tern And Brown Noddy, William Y. Brown
Condor
No abstract provided.
The Age Of Laysan Albatrosses, Diomedea Immutabilis, At First Breeding, Margaret T. Byzin, Harve I. Fisher
The Age Of Laysan Albatrosses, Diomedea Immutabilis, At First Breeding, Margaret T. Byzin, Harve I. Fisher
Condor
No abstract provided.
Duration Of Feeding Bouts And Responses To Salt Solutions By Hummingbirds At Artificial Feeders, D. M. Broom
Duration Of Feeding Bouts And Responses To Salt Solutions By Hummingbirds At Artificial Feeders, D. M. Broom
Condor
No abstract provided.
Effect Of Sympathy On Meadowlark Vocalizations, Julie Meents Ordal
Effect Of Sympathy On Meadowlark Vocalizations, Julie Meents Ordal
Condor
No abstract provided.
Fat Content And Flight Range In Shorebirds Summering On Enewetak Atoll, Oscar W. Johnson, Martin L. Morton
Fat Content And Flight Range In Shorebirds Summering On Enewetak Atoll, Oscar W. Johnson, Martin L. Morton
Condor
No abstract provided.
Recent Publications, The Condor
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.
Back Matter (Pdf), The Condor
Extension Of The Breeding Range Of The Black Oystercatcher In Alaska, Thomas J. Eley Jr.
Extension Of The Breeding Range Of The Black Oystercatcher In Alaska, Thomas J. Eley Jr.
Condor
No abstract provided.
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 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".
Hydrologische Und Chemische Untersuchungen An Den Fließgewässern Des Schlitzerlandes. A. Quellen. I. Übersicht, Jörg Brehm
International Journal of Speleology
In a Triassic sandstone woodland (Schlitzerland in Hesse, Western Germany) 17 springs were hydrologically and hydrochemically investigated throughout one year (April 1973 - April 1974). Measurements were carried out on water volume, temperature, electrolytical conductivity, pH, aikalinity, chlorinity, dissolved molecular oxygen, dissolved organic material (COD), ammonia, nitrite, nitrate, and free phosphate. Among the hydrochemical factors investigated the pH-value was closely related especially to the micro-climate in the spring drainage area. In particular the pH rose both with increasing length of the drainage area and — within the same spring with decreasing water supply. On the other hand the pH-value diminished …
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 …
Remarques Sur L'Aselle Psammique Proasellus Walteri (Chappuis, 1948) (Crustacea, Isopoda, Asellota), Jean-Paul Henry
Remarques Sur L'Aselle Psammique Proasellus Walteri (Chappuis, 1948) (Crustacea, Isopoda, Asellota), Jean-Paul Henry
International Journal of Speleology
P. walteri, an eyeless species of tiny size and thin body, shows numerous original characters. By its general morphology, it is one form of Asellid best adapted to the phreatic waters where it exists in large settlements. It is also able to live in the psammic biotope in a manner similar to Microparasellids. The females lay only 6 to 10 normal sized eggs. There is no indication of oostegits outside the breeding period. In some populations, the small number of eggs, correlated with the small size, seems to be compensated by a sex-ratio favorable so the females.
Quelques Données Sur La Population De Proasellus Slavus Ssp. N. Sket (Crustacea, Isopoda) Dans L'Hyporhéique De La Rivière Drave Près De Legrad, Romana Lattinger-Penko
Quelques Données Sur La Population De Proasellus Slavus Ssp. N. Sket (Crustacea, Isopoda) Dans L'Hyporhéique De La Rivière Drave Près De Legrad, Romana Lattinger-Penko
International Journal of Speleology
An analysis of the population in the hyporheic medium of the Drava river shows that Proasellus slavus ssp. n. is one of the smallest known Asellids. It is living in an interstitial biotope as a permanent population in which density varies in space and time. Our observations show that reproduction takes place throughout the year, however with a maximum rate at the beginning of summer. Females may produce a relatively great number of offspring, notwithstanding the smallness of the species.
The Role Of Groundwater In Eutrophication Of A Lake In Glacial Outwash Terrain, David Robert Lee
The Role Of Groundwater In Eutrophication Of A Lake In Glacial Outwash Terrain, David Robert Lee
International Journal of Speleology
The nutrient contribution of groundwater in glacial outwash terrain was evaluated at Lake Sallie in north-central U.S.A. (46°46’ N., 95° 54’ W.). Groundwater entering the lake was collected with seepage meters consisting of bottomless cylinders vented to a thin membrane bag. A theoretical flow net and comparison of nutrient concentrations in well and seepage water indicated that seepage meters can be used in high velocity discharge areas to obtain site-specific water samples of groundwater for nutrient analyses. Based on an average value of 0.25 mg/l PO4, groundwater inflow along an 800 km segment of shoreline transported 37 kg …
Über Ökologische Und Biogeographische Trends Innerhalb Der Harpacticoiden (Copepoda - Crustacea), Hans Jakobi
Über Ökologische Und Biogeographische Trends Innerhalb Der Harpacticoiden (Copepoda - Crustacea), Hans Jakobi
International Journal of Speleology
The majority of harpacticoids show a great dependence on the peculiarities of their habitat. This research attempted to detect the possible existence of biogeographical and ecological trends. The limited biogeographical data is discussed, so this is applied the method of analysis of morpho-ecological correlation (Jakobi, 1962) developed to determine ecological trends. This way, all characteristics of the harpacticoidean body selected were studied to check their adaptative value. Based on those results it was possible to establish and to define ecological units. Data were then subjected to statistical tests of homogeneity for variance and significance. Graphs are used to demonstrate the …
Die Vertikale Verteilung Von Ciliaten Im Stygorhithral Der Fulda (Beitrag Zur Kenntnis Mesopsammaler Ciliaten In Fließgewässern), Günther Lüpkes
Die Vertikale Verteilung Von Ciliaten Im Stygorhithral Der Fulda (Beitrag Zur Kenntnis Mesopsammaler Ciliaten In Fließgewässern), Günther Lüpkes
International Journal of Speleology
19 species of ciliates were found in interstitial biotopes of the Fulda Headwater. Two of these were new: Haplocaulus hengsti, n.sp. and Epistylis rotti, n.sp. (Peritrichida). The number of ciliate species decreases from the surface down so deeper layers; in a depth of 50 cm, only three species were found: Haplocaulus hengsti and Epistylis rotti and another small ciliate Trachelophyllum apiculatum. There was little detritus in this layer, and so, the abundance of the ciliates was low. On the other hand, there is little predation in deeper layers of stygorhithral sand and gravel. Small, long …