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Articles 56581 - 56610 of 59552

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Experimental Summary 1975/76, D J. Gillespie Jan 1976

Experimental Summary 1975/76, D J. Gillespie

Experimental Summaries - Plant Research

A. Pasture Deterioration. 1. Sub clover variety screening for root rot resistance - 2. Climatic influences. 3. Paddock monitoring investigations. B. Cultivar evaluation in high rainfall areas. 1. Midland B/Woogenellup 2. Midland B/Seaton Park/Yarloop/Larissa C. Lucerne trials.

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1976 Growing Season Results Report, M L. Poole Jan 1976

1976 Growing Season Results Report, M L. Poole

Experimental Summaries - Plant Research

1. 76BU15 - Sunflower varieties x rates of seeding x times of seeding on Busselton Sand at Ruabon. 2. 76BU4 - Miscellaneous species x rates of H.23408 Treeton. 3. 76AL6 - Rape varieties under severe blackleg conditions. 4. CB49 - Seed softening methods and effort of harrowing on emergence. 76MA9 - Miscellaneous Crop Trial. CB49 Trials 76BA27 - Effect of Harrowing on germination. Fluctuating temperatures. Fate of Other Trials: 76AL35, 76AL37), 76AL38), 76AL39), 76DE4, 76JE28.

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1976 Nitrogenous Fertilisers For Cereals, M. G. Mason Jan 1976

1976 Nitrogenous Fertilisers For Cereals, M. G. Mason

Experimental Summaries - Plant Research

Results from 1976 Trials on Wheat. Rates of nitrogen on wheat - soil test. In this, the second year of this programme, 49 sites were selected and soil sampled during February-March. Forty six of these trials consisted of four replications and the other three had three replications and all reps were soil sampled separately. In each rep. of the 46 trials. 20 samples were taken to 10 cm depth with pogo stick samplers. In the.other three trials 30 samples per rep. were taken. In addition, from three holes at random across each trial, bulk samples were obtained from the 0-15, …

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1976 Field Crop Experiment, M. W. Perry Jan 1976

1976 Field Crop Experiment, M. W. Perry

Experimental Summaries - Plant Research

Performance of August sown cereals - 76MO50. To investigate the performance of late sown cereals for summer forage or grain in the eastern wheatbelt. This trial was designed to test the idea that even in a drought year, very late sowing of cereals might provide a low grain yield or at least a substantial quantity of summer feed.

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1976 Report On Field Trials With Early-Maturing Subterranean Clover Crossbred Strains And Selections, D A. Nicholas Jan 1976

1976 Report On Field Trials With Early-Maturing Subterranean Clover Crossbred Strains And Selections, D A. Nicholas

Experimental Summaries - Plant Research

1. Drilled Trials in Wheatbelt Districts. Trial No. 76GE7, 76LG5, 76ME5, 76ME6, 76M011, 76M012, 76NA6, 76N01, 76TS10. A series of 9 trials to compare the crossbred subterranean clovers Nungarin, 239.2 and 584.1B. with Northam and Geraldton was sown in representative, dry wheatbelt localities in 1976. The trials were sown in randomised blocks with four replications on sites which carried little or no clover. Plot size was 4.22 metres by 40 metres. Superphosphate was applied at rates related to past applications and soil type, but was usually about 200 kg a hectare. Copper, zinc and molybdenum were applied where necessary. Seed …

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1976 Alternative Grain Legume Species Evaluation, G H. Walton Jan 1976

1976 Alternative Grain Legume Species Evaluation, G H. Walton

Experimental Summaries - Plant Research

l. Alternative species to Lupinus -76PE6, 76M11. 2. Time of Flowering Response of Cicer Arietinum to temperature and daylength.

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1976 Phosphorus And Sulphur Sources Trials, M D. Bolland Jan 1976

1976 Phosphorus And Sulphur Sources Trials, M D. Bolland

Experimental Summaries - Plant Research

PHOSPHORUS SOURCES TRIALS (A) Pasture trials i) High rainfall areas a) Sand: 76BU1 - New land P sources trial, T. O'Byrne, Yalingup. 76BU4 - Old land P sources trial, T. Coombes, Busselton. 76EX37 - Young land P sources trial, F. Fels, Esperance. b) Gravel: 76MT10 - New land P sources trial, Mt. Barker Research Station. 76MT9 - Old land P sources trial, Mt. Barker Research Station. ii) Medium rainfall areas: a) Sand 75N07A -New land P sources trial, D. Gillespie, East Chittering. b) Gravel: 75N07B - New land P sources trial, D. Gillespie, East Chittering. iii) Low rainfall areas a) …

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Regional Carbonate Deposition Of The Pitkin Limestone (Chesterian): Washington And Crawford Counties, Arkansas, Robert E. Tehan Jan 1976

Regional Carbonate Deposition Of The Pitkin Limestone (Chesterian): Washington And Crawford Counties, Arkansas, Robert E. Tehan

Journal of the Arkansas Academy of Science

The Pitkin Limestone overlies black shale of the Fayetteville Formation and is the youngest Mississippian unit in the Paleozoic succession of northwest Arkansas. Five major fades have been delineated within the formation by apetrographic examination of samples collected from 17 measured sections: (1) oolith facies, (2) bioclast facies, (3) nodular limestone-shale facies, (4) mudstone facies, and (5) lime mud mound facies. The distribution of these facies in the Pitkin Formation suggests that Fayetteville terrigenous sedimentation was succeeded by the deposition of widespread oolith shoals and skeletal blanket sand bodies across the northern Arkansas structural platform. Sparse accumulations of lime mud …

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Areal Geology, Brecciation, And Mineralization In The Trout Creek Area, Park And Chaffee Counties, Colorado, Barry Plin Mercer Jan 1976

Areal Geology, Brecciation, And Mineralization In The Trout Creek Area, Park And Chaffee Counties, Colorado, Barry Plin Mercer

Masters Theses

"The principle purpose of this thesis research has been to map rock types in an area selected for its occurrence of lead-zinc mineralization, and particularly to examine the character and origin of breccias present in the Leadville Limestone. The thesis area is located in Colorado along the east flank of the southernmost Mosquito Range, bounded by Buffalo Peaks Volcanic field on the north and Trout Creek on the south. Units mapped include the Sawatch Quartzite (Cambrian), Manitou Limestone (lower Ordovician), Harding Sandstone (middle Ordovician), Fremont Limestone (upper Ordovician), Parting Quartzite (Devonian), Dyer Dolomite (Devonian), and Leadville Limestone (Mississippian). The Leadville …

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Hydrologische Und Chemische Untersuchungen An Den Fließgewässern Des Schlitzerlandes. A. Quellen. I. Übersicht, Jörg Brehm Jan 1976

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 …

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Remarques Sur L'Aselle Psammique Proasellus Walteri (Chappuis, 1948) (Crustacea, Isopoda, Asellota), Jean-Paul Henry Jan 1976

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.

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Studies On Subterranean Drift Of Stygobiont Crustaceans (Niphargus, Crangonyx, Graeteriella), Siegfried Husmann Jan 1976

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.

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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 Jan 1976

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.

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Remarques Sur La Biologie Et L'Écologie De Stenasellus Virei Dollfus (Crustacea Isopoda Asellota Des Eaux Souterraines), Guy Magniez Jan 1976

Remarques Sur La Biologie Et L'Écologie De Stenasellus Virei Dollfus (Crustacea Isopoda Asellota Des Eaux Souterraines), Guy Magniez

International Journal of Speleology

Recent observations indicate that a laying season seems to exist, in karstic as well as in phreatic populations. Nevertheless, a single female cannot lay each year, because the reproductive intermolt averages 15-16 months and is always followed by one (9-10 months) or several non-reproductive intermolts. So, the minimum laying rhythm of female St. virei is biennial. The cavernicolous population (St. v. virei) of the Padirac swallow-hole is not a relict, but a colony separated from the main settlement of the alluvial waters of the Dordogne river. On the contrary, it is possible to find, close to each other, …

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Untersuchungen Zur Funktion Des Mesopsammon Bei Der Reinigung Von Infiltriertem Oberflächenwasser, Barbara Ritterbusch Jan 1976

Untersuchungen Zur Funktion Des Mesopsammon Bei Der Reinigung Von Infiltriertem Oberflächenwasser, Barbara Ritterbusch

International Journal of Speleology

Based upon the hypothesis that the Metazoa (nematoda and rotifera) in the interstitial stratum of a slow sand filter are of importance in the process of purification of surface water, a filter was built to check the substrate characteristics of different grain sizes compared with the natural soil. It was found that the granulometric composition of sands as found in the settling basins did have the best comparative screening properties. This was demonstrated by chemical analyses of NH4, NO2, NO3, PO4, KMnO4-consumption and O2-saturation. Only the NO3 …

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The Karst Of Transvaal (South Africa), J. Martini, I. Kavalieris Jan 1976

The Karst Of Transvaal (South Africa), J. Martini, I. Kavalieris

International Journal of Speleology

The Transvaal Karst is a world important example of a Karst developed on a very old dolomite. Its unique character is due to the composition of the rock and history of development. The dissolution of the dolomite is interesting and has an important effect on the character of the caves developed. The caves preserved in this area include the longest known in South Africa and are perhaps among the largest dolomite systems known in the world. They are very old and in some cases contain important palaeontological deposits (Australopithecine fauna). The caves to various degrees are in a state of …

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Notes Préliminaires Sur La Distribution Spatiale De Meta Menardi, Triphosa Dubitata, Triphosa Sabaudiata, Nelima Aurantiaca Et Culex Pipiens Au Sein D'Un Écosystème Cavernicole (Grotte De La Scierie: Hte.-Savoie), John D. Bourne Jan 1976

Notes Préliminaires Sur La Distribution Spatiale De Meta Menardi, Triphosa Dubitata, Triphosa Sabaudiata, Nelima Aurantiaca Et Culex Pipiens Au Sein D'Un Écosystème Cavernicole (Grotte De La Scierie: Hte.-Savoie), John D. Bourne

International Journal of Speleology

Following 8 months of observations in a richly populated cave, (Grotte de la Scierie, HauteSavoie, France), it has been possible to outline the movements and distribution of Meta menardi (Araneae), Nelima aurantiaca (Opiliones), Triphosa dubitata and Triphosa sabaudiata (Lepidoptera) and Culex pipiens (Diptera) within the cave ecosystem. Although no general rule can be postulated it appears that the morphology of the cave walls and the climatic conditions regulate the distribution of these 5 species within the cave ecosystem. The interactions between the 5 species have been investigated.

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The Effect Of Cave Entrances On The Distribution Of Cave-Inhabiting Terrestrial Arthropods, Stewart B. Peck Jan 1976

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 …

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Bragasellus Comasi N.Sp., Crustacea Isopoda Asellots Cavernicole D'Espagne Occidentale, Jean-Paul Henry, Guy Magniez Jan 1976

Bragasellus Comasi N.Sp., Crustacea Isopoda Asellots Cavernicole D'Espagne Occidentale, Jean-Paul Henry, Guy Magniez

International Journal of Speleology

This new, albinistic and anophtalmous Bragasellus has been collected in the waters of the Cova del Infierno (“Hell Cave”) near Covadonga, province of Asturias, Northwestern Spain.

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Zwei Neue Pseudoskorpion-Arten (Arachnida, Pseudoscorpiones) Aus Marokkanischen Höhlen, Volker Mahnert Jan 1976

Zwei Neue Pseudoskorpion-Arten (Arachnida, Pseudoscorpiones) Aus Marokkanischen Höhlen, Volker Mahnert

International Journal of Speleology

Chthonius (E.) longesetosus n. sp. (1 female) collected in the cave of Sidi Mejbur Tazas, and Allochernes maroccanus n. sp. (4 males 1 female 4 Tritonympha), collected in the cave of Caid (- 1fri et Caïd), Ait Mohammed, are described and figured. It is the first record of cave dwelling pseudoscorpions in Morocco aside from the publication of a Chthonius sp. from a cave near Taza.

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Hand-Held Electromagnet-Probe, William A. Crawford Jan 1976

Hand-Held Electromagnet-Probe, William A. Crawford

Geology Faculty Research and Scholarship

No abstract provided.

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Petrology Of The Oceanographer Fracture Zone (35ºn35ºw), Tsugio Shibata Jan 1976

Petrology Of The Oceanographer Fracture Zone (35ºn35ºw), Tsugio Shibata

Geology Theses and Dissertations

During a geological and geophysical survey of the Oceanographer Fracture Zone (35°N, 35°W), seventeen dredge hauls containing a variety of rocks were obtained. Petrographic study shows that these rock samples can be classified into six main rock types: fresh basalt, weathered basalt, metabasalt, gabbro, metagabbro, and serpentinite. Most of the dredge hauls were positioned on the steep, southern wall of the fracture zone, and an inference from the dredging results suggests that basalt is the most abundant rock type which outcrops at the junction between the rift valley and the fracture zone; however, as we move away from the junction, …

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Structural Studies In The Northern Chester Dome Of East-Central Vermont, Bruce Wallace Nesbit Jan 1976

Structural Studies In The Northern Chester Dome Of East-Central Vermont, Bruce Wallace Nesbit

Geology Theses and Dissertations

Rocks in the Eastern Vermont Sequence are highly metamorphosed and are said to range in age from Precambrian to Siluro-Devonian. The sequence outcrops on Keyes Mountain, about 6km Northwest of Felchville, Vermont, and an area on this mountain about 2km square was mapped in great detail.
The dominant rock type found is quartzofeldspathic gneiss, but schistose gneiss, amphibolite, quartzite and schist also occur. Most of these rocks are layered but layering has been transposed in many places and much of it is probably secondary. Layering and schistosity both dip dominantly to the north at about 25º.
A number of mesoscopic …

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Groundwater Inhabitants In Poland, Andrzej W. Skalski Jan 1976

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.

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New Data On The Foraminifera Of The Groundwaters Of Middle Asia, V. I. Mikhalevich Jan 1976

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 …

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Systematische Untersuchungen An Grundwasserkrebsen - Eine Bestandsaufnahme (Mit Der Beschreibung Zweier Neuer Gattungen Der Familie Parabathynellidae, Bathynellacea), Horst Kurt Schminke Jan 1976

Systematische Untersuchungen An Grundwasserkrebsen - Eine Bestandsaufnahme (Mit Der Beschreibung Zweier Neuer Gattungen Der Familie Parabathynellidae, Bathynellacea), Horst Kurt Schminke

International Journal of Speleology

This paper reviews critically some recent work on the systematics of subterranean Crustacea, in particular Jakobi’s work on the Parastenocarididae (Copepoda), Serban’s work on the Bathynellidae (Bathynellacea, Syncarida) and Schminke’s revision of the Parabathynellidae (Bathynellacea, Syncarida). It is pointed out that three different approaches have been adopted in each of the three cases and advantages and shortcomings of each of them are analysed. Finally descriptions are given of two new genera of Parabathynellidae, Afrobathynella gen. n. and Nunubathynella gen. n., from a locality near Port Elisabeth (South Africa).

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The Role Of Groundwater In Eutrophication Of A Lake In Glacial Outwash Terrain, David Robert Lee Jan 1976

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 …

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Sur La Distribution Géographique De La Faune Interstitielle Du Danube Et De Certains De Ses Affluents En Basse-Autriche, Dan L. Danielopol Jan 1976

Sur La Distribution Géographique De La Faune Interstitielle Du Danube Et De Certains De Ses Affluents En Basse-Autriche, Dan L. Danielopol

International Journal of Speleology

The wide distribution of the interstitial isopod Proasellus slavus as well as new records of Troglochaetus (Archiannelida) and BogidielIa (Amphipoda) in Lower-Austria are presented. Species of the genera Microcharon (Isopoda Microparasellidae), Kovalevskiella (Ostracoda Metacyprinae) and of the family Parabathynellidae (Bathynellacea) are recorded for the first time in Austria.

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Die Tierische Besiedlung Des Hyporheischen Interstitials Eines Urgebirgsbaches Unter Dem Einfluß Von Allochthoner Nährstoffzufuhr, Hans-Gerd Pieper Jan 1976

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 …

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An Introduction To The Japanese Groundwater Animals With Reference To Their Ecology And Hygienic Significance, Kôichi Matsumoto Jan 1976

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 …

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