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Articles 19381 - 19410 of 19670
Full-Text Articles in Entire DC Network
A New Carolina Wren (Aves: Troglodytidae) From Southern Mexico, George H. Lowery Jr., Delwyn G. Berrett
A New Carolina Wren (Aves: Troglodytidae) From Southern Mexico, George H. Lowery Jr., Delwyn G. Berrett
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Three New Subspecies Of Birds From Honduras, Burt L. Monroe Jr.
Three New Subspecies Of Birds From Honduras, Burt L. Monroe Jr.
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Effects Of Beaver On Stream Flow And Water Quality, James W. Bates
Effects Of Beaver On Stream Flow And Water Quality, James W. Bates
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Water, one of the major resources of the western lands, controls the economy and expansion of the communities. Industry, agriculture, timber, livestock, game and home water needs are all dependent upon a steady and continued flow of water from wells, springs, and rivers. Water is derived from one source, precipitation, which occurs in the form of rain and snow. Watersheds which are properly managed accumulate a substantial snow pack during the winter which is the life-giving source of water for our springs.
The Utah Water and Power Report (1948) indicates the annual precipitation over the entire state of Utah averaged …
Habitat Specificity In Land Snails, John C. Coulter, Glen L. White, Frank G. Nordlie
Habitat Specificity In Land Snails, John C. Coulter, Glen L. White, Frank G. Nordlie
Journal of the Minnesota Academy of Science
No abstract provided.
The Sparrow Invasion Of 1962, C D. Gooding, C. R. Walton
The Sparrow Invasion Of 1962, C D. Gooding, C. R. Walton
Journal of the Department of Agriculture, Western Australia, Series 4
During late 1962 and early 1963, a report that sparrows were at large in the metropolitan area close to Perth drew intense public interest.
This article gives some facts about the reported sightings.
The Webworm. 1. The Webworm In Its Natural Environment, J A. Button
The Webworm. 1. The Webworm In Its Natural Environment, J A. Button
Journal of the Department of Agriculture, Western Australia, Series 4
MANY farmers are concerned about the apparent increase in webworm numbers in recent years.
It has been suggested that the problem is now more widespread and the outbreaks more regular than a few years ago.
The Webworm. 3. Ecology : A Report On Some Of The Factors Which Regulate Webworm Numbers In The Field, J A. Button
The Webworm. 3. Ecology : A Report On Some Of The Factors Which Regulate Webworm Numbers In The Field, J A. Button
Journal of the Department of Agriculture, Western Australia, Series 4
IN this section the webworm will be examined in its environment, and particular attention will be given to the more important factors which govern numbers and distribution of the insects.
Literature On The Vegetation Of Arkansas, Edward E. Dale Jr.
Literature On The Vegetation Of Arkansas, Edward E. Dale Jr.
Journal of the Arkansas Academy of Science
No abstract provided.
The Bdellidae (Acarina) Of The Australian Realm, Warren T. Atyeo
The Bdellidae (Acarina) Of The Australian Realm, Warren T. Atyeo
Bulletin of the University of Nebraska State Museum (1924–2023)
Although primarily a systematic study, variations in the integumental striae and chaetotaxy of the legs are discussed. The genus Octobdellodes Atyeo, 1960 is synonymized with Bdellodes Oudemans, 1937 and the sugenus Cytobdella Mihelcic, 1958 is synonymized with Cyta von Heyden, 1826. The genus Bdellodes is divided into the subgenera Bdellodes and Hoploscirus Thor, 1937 (=Thoribdella Grandjean, 1938, new synonymy). Twenty-two species are now known to occur in New Zealand and the outlying islands. These include four known species: Bdella iconica, Bdellodes (Roploscirus) lapidaria, B. (R.) reticulata, and Cyta latirostris, and eighteen new species: Bdellodes (Bdellodes) harpax, B. (B.) oraria, …
Ant Pests In Western Australia, Clee Francis Howard Jenkins
Ant Pests In Western Australia, Clee Francis Howard Jenkins
Journal of the Department of Agriculture, Western Australia, Series 4
THERE are many different species of native ants in Western Australia, but few of these are of major economic importance.
Several introduced species however, have spread extensively and have proved troublesome both as agricultural and household pests.
Spraying For Grasshopper Control, T J. Tozer
Spraying For Grasshopper Control, T J. Tozer
Journal of the Department of Agriculture, Western Australia, Series 4
A BIG increase in cereal growing in the "hopper" belt has brought a general improvement in the grasshopper situation over the past few years.
This highlights the emphasis entomologists have placed on cultivation as the best known way of controlling grasshoppers.
Wallaby Control In The Kimberleys, C D. Gooding
Wallaby Control In The Kimberleys, C D. Gooding
Journal of the Department of Agriculture, Western Australia, Series 4
EXPERIMENTS aimed at controlling sandy wallabies along the Fitzroy River frontage were started in 1952 by officers of the Agriculture Protection Board.
This work was undertaken in response to requests for assistance from some of the station owners and managers between Derby and Fitzroy Crossing.
Milking Routine, G R. Olney
Milking Routine, G R. Olney
Journal of the Department of Agriculture, Western Australia, Series 4
IT is well known that the condition of the milking machine is important for efficient and hygienic milking, but even with a machine in good condition good management during the milking process plays a leading part.
New Species And Records Of Little-Known Species Of Melissodes From North America (Hymenoptera: Anthophoridae), Wallace E. Laberge
New Species And Records Of Little-Known Species Of Melissodes From North America (Hymenoptera: Anthophoridae), Wallace E. Laberge
Bulletin of the University of Nebraska State Museum (1924–2023)
Two new species from Mexico, Melissodes (Tachymelissodes) sonorensis and M. (Melissodes) tescorum, are described in this paper. The previously undescribed males of M. cerussata LaBerge and M. baileyi Cockerell are described. Notes concerning the key to species of the subgenus Callimelissodes are given. New records of the following poorly known species of Melissodes are included: M. opuntiella, M. sphaeralcea, M. fimbriata, M. baileyi, M. apicata, M. mitchelli, M. intorta, M. flexa, M. maesta, M. cerussata, M. expolita, M. fasciatella, M. floris, M. …
Deltoptila, A Middle American Genus Of Anthophorine Bees (Hymenoptera, Apoidea), Wallace E. Leberge, Charles D. Michener
Deltoptila, A Middle American Genus Of Anthophorine Bees (Hymenoptera, Apoidea), Wallace E. Leberge, Charles D. Michener
Bulletin of the University of Nebraska State Museum (1924–2023)
A third genus in the tribe Anthophorini in the vI/estern Hemisphere, genus Deltoptila, is described in this work. Previously described species included in the genus are as follows: D. melanopyrrha (Dours), D. elefas (Friese), D. fulva (Smith), D. bombyformis (Smith), D. montezumia (Smith), D. aurulentocaudata (Dours), D. agilis (Smith), D. costaricensis (Friese). New descriptions and records are given for D. montezumia, D. aurulentocaudata, D. agilis and D. costaricensis. Two new species are described: D. afimbriata and D. pexata.
Water For Agriculture. 6. Control Of Algae In Water Supplies, R C. Gorman
Water For Agriculture. 6. Control Of Algae In Water Supplies, R C. Gorman
Journal of the Department of Agriculture, Western Australia, Series 4
ALGAE are primitive forms of plant life that are common and normal in surface waters. They are fonnd in every water supply exposed to sunlight.
Their presence is not normally detectable until there are enough of them to make their presence obvious.
Rabbit Fumigation, C D. Gooding
Rabbit Fumigation, C D. Gooding
Journal of the Department of Agriculture, Western Australia, Series 4
Not all poisons act by absorption from the alimentary tract or through the skin, the fumigants are a big group of poisons used in pest control which act on the animal after being absorbed through the lungs.
FUMIGATION as it is now used in Western Australia is not always an economical way of treating whole farm properties. It should only be used on its own in areas where it is impossible to use other more permanent methods such as warren destruction.
Comparison Of Spider Populations Of Ground Stratum In Arkansas Pasture And Adjacent Cultivated Field, W. H. Whitcomb, Harriet Exline, Maxine Hite
Comparison Of Spider Populations Of Ground Stratum In Arkansas Pasture And Adjacent Cultivated Field, W. H. Whitcomb, Harriet Exline, Maxine Hite
Journal of the Arkansas Academy of Science
Of 64 species of spiders taken from the ground stratum of an Arkansas pasture and adjoining cotton field, only 26 were common to both. Twenty-two were collected only in the cotton field; 16, only in the pasture. Many of the 18 species of lycosids were taken in greater numbers in the cultivated field, especially Pardosa milvina and Lycosa helluo. Eight species of lycosids were found only in the cotton field; two, only in the pasture. Only Schizocosa avida, of the better represented lycosids, appeared to show no preference. Similar relationships are given for dictynids, erigonids, linyphiids, oxyopids, gnaphosids, clubionids, thomisids, …
The Archeology Of The Lime Creek Site In Southwestern Nebraska, E. Mott Davis
The Archeology Of The Lime Creek Site In Southwestern Nebraska, E. Mott Davis
University of Nebraska State Museum: Staff and Affiliates, Publications
The Lime Creek site is a stratified Early Lithic (Paleo-Indian) camp site buried in the Terrace-2A alluvial fill of a valley in the dissected loess plains. Geological correlations indicate an early Valders (Wisconsin- IV) date. A radiocarbon date (No. C-471) of 9524 B.P. from just below Lime Creek I, the lowest occupation zone, must be taken only as a minimal possible age for the site. The animal bones in Lime Creek I are primarily of pronghorn and beaver, whereas those in Lime Creek III, the highest occupation zone, are exclusively of bison. The change in hunting patterns seems due to …
Ecology Of Spring Fed Salt-Marshes, Eric George Bolen
Ecology Of Spring Fed Salt-Marshes, Eric George Bolen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Any marsh is a distinctive land-form of varied interest. To the agriculturist it is wasteland to be reclaimed; to the naturalist, a habitat of aesthetic value. To the ecologist, however, a marsh represents a complexity of vegetation under the influences of many and often inseparable factors. It becomes a place of challenging study.
Vermin Control Research In Western Australia 1952-1962, C D. Gooding
Vermin Control Research In Western Australia 1952-1962, C D. Gooding
Journal of the Department of Agriculture, Western Australia, Series 4
Ten years ago this month the Agriculture Protection Board of Western Australia began setting up a section within its Vermin Control Branch to tackle some of the scientific aspects of vertebrate pest control.
C. D. Gooding, B.Sc. (Agric), reviews the first 10 years of vermin control research work in Western Australia.
Webworm And The Weather, J A. Button
Webworm And The Weather, J A. Button
Journal of the Department of Agriculture, Western Australia, Series 4
FOR many years farmers have remarked on the cyclic occurrence of webworm outbreaks in their cereal crops.
Webworm, the State's most serious pest of cereals, has frequently assumed a role of major importance for one or two seasons, and then not been troublesome for a number of years.
A research programme being carried out by the Entomology Branch aims to give a better understanding of the effects of weather conditions on the seasonal incidence of webworm, and should lead to more effective control of this pest.
The Gascoyne River Catchment Area, W M. Nunn
The Gascoyne River Catchment Area, W M. Nunn
Journal of the Department of Agriculture, Western Australia, Series 4
A RECENT Department of Agriculture survey of the Gascoyne River catchment area has indicated that deterioration of plant cover in the area contributes to the severity of floods which regularly damage the town of Carnarvon.
It is hoped that the results of the survey will help efforts to regenerate the catchment area, and reduce the risk of flooding.
Grazing To Control Pasture Composition, R A. Bettenay
Grazing To Control Pasture Composition, R A. Bettenay
Journal of the Department of Agriculture, Western Australia, Series 4
APART from grazing management, there are a number of means by which the farmer can influence pasture composition.
With the exception of grazing, all of these processes involve recurring costs, so it is important to exert the utmost possible control through the grazing animal.
Bee Farming : Honey Flora Of Western Australia, R S. Coleman
Bee Farming : Honey Flora Of Western Australia, R S. Coleman
Journal of the Department of Agriculture, Western Australia, Series 4
A GOOD knowledge of the nectar producing plants of the State is essential for success in commercial beekeeping.
The beekeeper who has a good knowledge of which plants produce good flows, when the flows might be expected, and where good stands of those plants may be found is the one who has the best chance of success.
A Middle Miocene Rhinoceros Quarry In Morrill County, Nebraska (With Notes On Hip Disease In Diceratherium), Robert M. Stecher, C. Bertrand Schultz, Lloyd G. Tanner
A Middle Miocene Rhinoceros Quarry In Morrill County, Nebraska (With Notes On Hip Disease In Diceratherium), Robert M. Stecher, C. Bertrand Schultz, Lloyd G. Tanner
Bulletin of the University of Nebraska State Museum (1924–2023)
Extensive deposits of fossil rhinoceros bones have been excavated from University of Nebraska State Museum collecting localities Mo-113, -114, -115, -116, and -118 some 8 1/2 to 9 1/2 miles north of Bridgeport, Morrill County, Nebraska. The fossils were associated with other faunal elements in the lower portion of the Marsland formation (middle Miocene) of the Hemingford group. The rhinoceros is considered to be Diceratherium niobrarensis Peterson, geologic variety. A pathologic right femur of D. niobrarensis provides evidence of hip disease in the medial Miocene rhinoceroses.
Early Records Of Some Mammals From Nebraska, J. Knox Jones Jr.
Early Records Of Some Mammals From Nebraska, J. Knox Jones Jr.
Bulletin of the University of Nebraska State Museum (1924–2023)
Ten species of Recent mammals that formerly occurred in Nebraska have been extirpated there by European man. Surprisingly few specimens of the species concerned are preserved in museum collections. Perusal of a representative segment of the historical literature pertaining to Nebraska has revealed records of occurrence of most of the extirpated species that provide a basis for estimating the former distribution of each in the State.
Bird Problems And Control In Western Australia, John L. Long
Bird Problems And Control In Western Australia, John L. Long
Journal of the Department of Agriculture, Western Australia, Series 4
ALTHOUGH wild birds are mostly beneficial in Western Australia, there are certain species which are damaging to agriculture and the home gardener.
Food For Thought In Rabbit Poisoning, J W. Leighton
Food For Thought In Rabbit Poisoning, J W. Leighton
Journal of the Department of Agriculture, Western Australia, Series 4
SINCE the introduction of the "1080" Poisoning Unit Scheme in 1955 by the Agriculture Protection Board reasonable control of rabbit numbers has been obtained.
Besides this many important side effects have resulted.
List Of The Smut Fungi Of Arkansas, George E. Templeton
List Of The Smut Fungi Of Arkansas, George E. Templeton
Journal of the Arkansas Academy of Science
No abstract provided.