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Articles 9061 - 9090 of 9400
Full-Text Articles in Entire DC Network
Biology Of Nematodes In Desert Ecosystems, R. Mankau, S. A. Sher
Biology Of Nematodes In Desert Ecosystems, R. Mankau, S. A. Sher
Memorandum
No abstract provided.
Development Of Techniques For Estimating Biomass Of Desert Inhabiting Invertebrate Animals, G. L. Bender, J. Macmahon, S. Szerlip
Development Of Techniques For Estimating Biomass Of Desert Inhabiting Invertebrate Animals, G. L. Bender, J. Macmahon, S. Szerlip
Memorandum
No abstract provided.
Evaluation Of Trap Stimulus In Relation To Probability Of Rodent Capture, D. F. Balph, R. D. Anderson
Evaluation Of Trap Stimulus In Relation To Probability Of Rodent Capture, D. F. Balph, R. D. Anderson
Memorandum
No abstract provided.
Evaluation Of Techniques For Estimating Population Sizes Of Desert Rodents, C. D. Jorgensen, H. D. Smith, D. T. Scott
Evaluation Of Techniques For Estimating Population Sizes Of Desert Rodents, C. D. Jorgensen, H. D. Smith, D. T. Scott
Memorandum
No abstract provided.
Diets, Food Preferences, And Reproductive Cycles Of Some Desert Rodents, R. P. Balda, G. C. Bateman, T. A. Vaughan
Diets, Food Preferences, And Reproductive Cycles Of Some Desert Rodents, R. P. Balda, G. C. Bateman, T. A. Vaughan
Memorandum
No abstract provided.
Food Habits Of Northern Rodents And Jackrabbits, W. E. Saul
Food Habits Of Northern Rodents And Jackrabbits, W. E. Saul
Memorandum
No abstract provided.
Factors Affecting The Movement And Distribution Of Anions In Desert Soils, J. J. Jurinak, R. A. Griffin
Factors Affecting The Movement And Distribution Of Anions In Desert Soils, J. J. Jurinak, R. A. Griffin
Memorandum
No abstract provided.
Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, Ting H. Hsiao
Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, Ting H. Hsiao
Memorandum
No abstract provided.
Colony Characters Of Termites As Related To Population Density And Habitat, W. L. Nutting, M. I. Haverty, J. P. Lafage, R. V. Carr
Colony Characters Of Termites As Related To Population Density And Habitat, W. L. Nutting, M. I. Haverty, J. P. Lafage, R. V. Carr
Memorandum
No abstract provided.
Aquatic Macroinvertebrates Of The Playa, G. Richardson, C. R. Ward, E. W. Huddleston
Aquatic Macroinvertebrates Of The Playa, G. Richardson, C. R. Ward, E. W. Huddleston
Memorandum
No abstract provided.
Dynamics And Productivity Of Aquatic Invertebrates In A Desert Environment, A. R. Gaufin, J. Stanford, E. Clubb, E. Nisonger
Dynamics And Productivity Of Aquatic Invertebrates In A Desert Environment, A. R. Gaufin, J. Stanford, E. Clubb, E. Nisonger
Memorandum
No abstract provided.
Steller's Sea Cow In Pleistocene Interglacial Beach Deposits On Amchitka, Aleutian Isknds, L. M. Gard Jr., G. E. Lewis, Frank C. Whitmore Jr.
Steller's Sea Cow In Pleistocene Interglacial Beach Deposits On Amchitka, Aleutian Isknds, L. M. Gard Jr., G. E. Lewis, Frank C. Whitmore Jr.
United States Geological Survey: Staff Publications
The first discovery of Steller's Sea Cow (Hydrodamalis) in place in Pleistocene deposits has been made in interglacial beach sand and gravel 35 m above present sea level on Amchitka, Aleutian Islands. Uranium series dating of the bone indicates that it is about 135,000 yrs old.
Miocene Amphicyonids (Mammalia, Carnivora) From The Agate Spring Quarries, Sioux County, Nebraska, Robert M. Hunt Jr.
Miocene Amphicyonids (Mammalia, Carnivora) From The Agate Spring Quarries, Sioux County, Nebraska, Robert M. Hunt Jr.
Department of Earth and Atmospheric Sciences: Faculty Publications
The Miocene late Arikareean land mammal "age" is largely defined by the faunal assemblage from the Agate Spring Quarries and other nearby localities in the Harrison Formation of Sioux County, Nebraska. Amphicyonid carnivores of the genera Cynelos Jourdan and Ysengrinia Ginsburg were previously known only from European Oligocene and Miocene deposits. These genera are now known from the Harrison Formation of Sioux and Box Butte counties, western Nebraska, and therefore the late Arikareean fauna now includes three amphicyonids: Cynelos sp., (?) Ysengrinia sp., Daphoenodon superbus Peterson. The stage of evolution of these carnivores suggests a correlation of the Agate Spring …
Dust Storms Cause Yield Losses, Department Of Agriculture, Western Australia, C. H. Trotman
Dust Storms Cause Yield Losses, Department Of Agriculture, Western Australia, C. H. Trotman
Journal of the Department of Agriculture, Western Australia, Series 4
Farmers and research workers are well aware that heavy grazing during summer loosens and exposes soil to the action of strong winds and summer thunder storms. They also realise that dust storms mean soil loss from paddocks, but until now there has been little idea of the effect of these storms on crop yields in subsequent seasons.
Kojonup Maintenance Phosphorus And Sulphur Trial 68br7ex, J W. Bowden, B. Scurr
Kojonup Maintenance Phosphorus And Sulphur Trial 68br7ex, J W. Bowden, B. Scurr
Experimental Summaries - Plant Research
68BR7 Maintenance superphosphate and sulphur trial To determine the level of superphosphate to maintain near maximum plant and animal production with and without additional elemental sulphur. Experimental: There are 41 plots with 29 treatments. 12 treatments have 2 replications. Site: Very old land, whitegum and sheoak vegetation with greybrown sandy loam and some quartz grit. History: Superphosphate - 1/2bag for 40 years - 3,600 lbs (1633 kg). 600 lb (272 kg) in the last 4 years to 1967.
Soil And Plant Analysis For Mineral Deficiencies, M D. Carroll
Soil And Plant Analysis For Mineral Deficiencies, M D. Carroll
Journal of the Department of Agriculture, Western Australia, Series 4
Soil and plant analysis (testing) has its supporters and its critics. Some of the differences are resolved if the distinction is made between the concept and the practice. Most people would agree with the concept of soil and plant analysis but the practice, or service offered, in any agricultural situation can be subject to valid criticism.
This article defines some of the principles involved and illustrates some of the problems, to provide a better understanding of the usefulness and the limitations of soil and plant analysis as a diagnostic aid in plant and animal nutrition.
Limnology Of Four Bauxite Open-Pit Lakes, George L. Harp, Ronald D. Hubbard
Limnology Of Four Bauxite Open-Pit Lakes, George L. Harp, Ronald D. Hubbard
Journal of the Arkansas Academy of Science
The aquatic flora and fauna and 18 physicochemical characteristics of four bauxite open-pit lakes were studied from September 1969 to August 1970. The least acid lake (pH 3.4-4.4) supported 49 different aquatic insects, plankton, and higher aquatic plants. The most acid lake (pH 2.7-3.2) supported only 26 different plants and animals. Bauxite open-pit lakes within the pH range studied appear to be as relatively unproductive as their coal strip-mine lake counterparts, with which they share physicochemical and biological characteristics. Benthic macrofaunal diversity and abundance appear to be related more closely to distribution and abundance of leaf detritus than to hydrogen-ion …
Bulletin No 3861 - Kimberley Research Station - Progress Report 1972, J. R. Mcalpine, R. H. Gunn, P. Jakobsen, R. Wetselaar, J. J. Basinski, N. J. Thomson, A. G. L. Wilson, D. H. Mackenzie, A. J. Millington, D. F. Beech, P. C. Owen, B. G. Williams, C. G. Blunt, A. Mcr Holm
Bulletin No 3861 - Kimberley Research Station - Progress Report 1972, J. R. Mcalpine, R. H. Gunn, P. Jakobsen, R. Wetselaar, J. J. Basinski, N. J. Thomson, A. G. L. Wilson, D. H. Mackenzie, A. J. Millington, D. F. Beech, P. C. Owen, B. G. Williams, C. G. Blunt, A. Mcr Holm
Bulletins - 3000 - 3999
The systematic investigations of the potential of the Ord area for irrigated farming began during the Second World War when the possibilities of damming the river were first examined, initial soil survey was carried out, and agricultural experiments started. The Kimberley Research Station was established on its present site in 1945. A year later the State and Commonwealth Governments agreed to finance and operate the Station jointly, with CSIRO and the Western Australian Department of Agriculture being responsible for research.
The construction of the main dam designed to store 5,675 million m" ( 4.6 million acre feet) was completed in …
Plant Cover For Bare And Salt Affected Land, Department Of Agriculture, Western Australia
Plant Cover For Bare And Salt Affected Land, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
The contributions made by this State to land reclamation were recognised at an international level last year.
Mr. C. V. Malcolm, a research officer with the Soils Division, presented a paper entitled "Establishing Shrubs in Saline Environments" at a symposium on Useful Wildland Shrubs, Their Biology and Utilisation, at Utah State University, Logan, Utah.
The conclusion to Mr. Malcolm's review, set out below, summarises much of what is known about shrub establishment in saline areas.
Squillites Spinosus (Syncarida, Malacostraca) And A New Unnamed Crustacean From The Mississippian Of Central Montana, Joan Matthews Rumore
Squillites Spinosus (Syncarida, Malacostraca) And A New Unnamed Crustacean From The Mississippian Of Central Montana, Joan Matthews Rumore
Masters Theses
A Mississippian syncarid from the Heath shale, Squillites spinosus Scott, 1938, is redescribed and a discussion of some aspects of Syncarid phylogeny is given. Modern Syncarid biogeographical distribution is discussed and an analysis of these zoogeographical patterns is provided. A strange animal, Crustacea (incerta sedis) from the Heath shale is described in as far as is possible.
In 1971, Dr. Richard Lund of the University of Pittsburgh while searching for fossil fish in the Upper Mississippian Heath Shale of Montana found the associated remains of fossil crustaceans. Two locations were involved, T14 N R20E sec. 28, Fergus County, Montana, 2 …
La Migration Des Trichoptères Cavernicoles. Mise En Évidence Par Piégeage Lumineux, Yvette Bouvet
La Migration Des Trichoptères Cavernicoles. Mise En Évidence Par Piégeage Lumineux, Yvette Bouvet
International Journal of Speleology
The Trichoptera from the group “Stenophylax” are frequent in caves. Until now, following Jeannel’s thought (1926), most authors believed that these animals were found in caves by hazard and were doomed to perish in them. With the use of a light trap it is now demonstrated that cavernicolous Trichoptera not only stay in caves during the entire summer, but also that during autumn (September-October) they leave the caves to lay their eggs in the nearby rivers.
On The Food And Feeding Habits Of Lepidomysis Longipes (Pillai & Mariamma) (Crustacea Mysidacea), C. N. Nath, N. K. Pillai
On The Food And Feeding Habits Of Lepidomysis Longipes (Pillai & Mariamma) (Crustacea Mysidacea), C. N. Nath, N. K. Pillai
International Journal of Speleology
The amount of food available to the subterranean mysid, Lepidomysis longipes (Pillai & Mariamma, 1964) in its habitat has been calculated and analysed. Lepidomysis appears to feed mainly on decaying vegetable matter. Lepidomysis shows many modifications in its external morphology. Consequently, the mode of feeding has undergone some marked changes from that of its epigean relatives. L. longipes is a discontinuous feeder.
Optic Regression In A Subterranean Mysid (Crustacea, Mysidacea), C. N. Nath, D. M. Thampy, N. K. Pillai
Optic Regression In A Subterranean Mysid (Crustacea, Mysidacea), C. N. Nath, D. M. Thampy, N. K. Pillai
International Journal of Speleology
The eyes of the blind subterranean mysid, Lepidomysis longipes are stalked and paired in the embryonic condition. They fuse together in the adult and the optic ganglia are enclosed in a single eyeplate. The ganglia are arranged in the form of an arc on either side anterodorsal to the brain inside the single eyeplate.
Note On Lepidoptera From Bulgarian Caves, Andrzej W. Skalski
Note On Lepidoptera From Bulgarian Caves, Andrzej W. Skalski
International Journal of Speleology
This paper is a report on Lepidoptera collected in 1960 and 1970 in some caves of the Lakatnik region in the Stara Planina Mts. (Bulgaria). The following species were found: Digitivalva granitella (Tr.), D. pulicariae (Klim.), Thiphosa sabaudiata Dup. and Autophila limbata Stgr. Two species, D. pulicariae (Klim.) and A. limbata Stgr. are new for the cave-fauna and fauna of Bulgaria.
Etude Comparée Du Comportement Alimentaire De Deux Poissons Cavernicoles (Anoptichthys Jordani Hubbs Et Innes Et Caecobarbus Geertsi Blgr.), Georges Thinès, Nicole Wissocq
Etude Comparée Du Comportement Alimentaire De Deux Poissons Cavernicoles (Anoptichthys Jordani Hubbs Et Innes Et Caecobarbus Geertsi Blgr.), Georges Thinès, Nicole Wissocq
International Journal of Speleology
Systematic experiments on the cave-fishes Anoptichthys jordani and Caecobarbus geertsi show that the vertical orientation of swimming behaviour can be significantly modified by feeding the fishes during a period of 8 days before the experiments, either with food dropping to the bottom (Tubifex) or with food floating on the surface of the water (dried Daphnia). The observations have been quantified by recording systematically the position of the fishes in height in an aquarium divided in 3 levels of observation. The position of the fishes was recorded every 10 seconds during a total period of 15 minutes, divided in 3 periods …
Essai Sur La Faune Cavernicole De Bulgarie. Iii. Résultats Des Recherches Biospéologiques De 1966 À 1970, P. Beron
International Journal of Speleology
The present research follows two other earlier papers on the Bulgarian cave fauna (1962 and 1967). The three papers regroup the data on 431 Bulgarian karst caves, more or less studied from a biospeleological point of view. In this paper one will find a list of 147 new caves and pits with 293 animal species, of which 154 have not been mentioned in the earlier papers. A reference list containing 55 titles has been attached.
Temperature And Relative Humidity Responses Of Two Texas Cave-Adapted Millipedes, Cambala Speobia (Cambalida: Cambalidae) And Speodesmus Bicornourus (Polydesmida: Vanhoeffeniidae), Eddie Bull, Robert W. Mitchell
Temperature And Relative Humidity Responses Of Two Texas Cave-Adapted Millipedes, Cambala Speobia (Cambalida: Cambalidae) And Speodesmus Bicornourus (Polydesmida: Vanhoeffeniidae), Eddie Bull, Robert W. Mitchell
International Journal of Speleology
The temperature and relative humidity preferences and tolerances of two Texas species of cave-adapted millipedes, Cambala speobia (Chamberlin) and Speodesmus bicornourus Causey, were studied. Both species showed gross preferences when tested in gradient chambers for temperatures and relative humidities approximating those of their cave environments. But C. speobia, the less adapted species morphologically, was the more selective of the two species for such conditions. S. bicornourus was far less tolerant of elevated temperatures and reduced relative humidities than was C. speobia. Discussed is a possible reason why a terrestrial troglobite like S. bicornourus would combine intolerance with a …
Final Report Emission Inventory For The State Of Nebraska, The Ibm Corporation Federal Systems Division, Environmental Protection Agency
Final Report Emission Inventory For The State Of Nebraska, The Ibm Corporation Federal Systems Division, Environmental Protection Agency
United States Environmental Protection Agency: Publications
The following report represents the results of the work performed under BOA 68-02-0043, Task Order Number 1 from The Environmental Protection Agency, Air Pollution Control Office. A note of thanks is due to Mr. E. J. Lillis and D. Dunbar of the EPA Project Office and Mr. Peter Culver, the EPA Project Engineer for their assistance and excellent cooperation during the study. A note of special thanks is due to Mr. Gene Robinson of the Nebraska Division of Air Pollution Control without whose efforts successful completion of this task would not have been possible.
Umr Journal: Alaska -- Its Mineral Potentials And Environmental Challenges, University Of Missouri--Rolla
Umr Journal: Alaska -- Its Mineral Potentials And Environmental Challenges, University Of Missouri--Rolla
UMR Journal -- V. H. McNutt Colloquium Series
No abstract provided.
Arctic Ecology: A Decade Of Experience, John F. Schindler
Arctic Ecology: A Decade Of Experience, John F. Schindler
UMR Journal -- V. H. McNutt Colloquium Series
A quick glance at the title of this presentation and the reader braces himself for another antipollution or “save-the-sod” type of discourse that has become so popular these days. I do not wish to detract from the importance or the need for such efforts but I would like to address myself to the the broader meaning of the term.
Ecology--the word comes from the Greek root “oikos” which means house or household. What I’d like to do is to tell you about this “house” I’ve been living in for the past 10 years.