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Articles 75841 - 75870 of 78612
Full-Text Articles in Entire DC Network
Deep Creek Validation Study Report, G. W. Minshall, C. Y. Manuel, R. W. Dunn, R. K. Pace, M. R. Mcsorley, D. A. Andrews
Deep Creek Validation Study Report, G. W. Minshall, C. Y. Manuel, R. W. Dunn, R. K. Pace, M. R. Mcsorley, D. A. Andrews
Memorandum
No abstract provided.
Interactions Of Winter Sheep Grazing And Small Mammal Populations, C. D. Jorgensen
Interactions Of Winter Sheep Grazing And Small Mammal Populations, C. D. Jorgensen
Memorandum
No abstract provided.
Clustar And Clustid: Programs For Hierarchical Cluster Analysis, K. A. Marshall, H. C. Romesburg
Clustar And Clustid: Programs For Hierarchical Cluster Analysis, K. A. Marshall, H. C. Romesburg
Memorandum
No abstract provided.
A Proposal For The Establishment Of A Monthly Latin American Fisheries Newspaper, Kenneth Proudfoot
A Proposal For The Establishment Of A Monthly Latin American Fisheries Newspaper, Kenneth Proudfoot
Marine Affairs Theses and Major Papers
At the present time there does not exist any publication or other communication medium, directed specifically to a Latin American readership, that reports thoroughly and accurately on the fisheries and other marine-related developments in Latin America. Problems of language, physical size of the area, financing, personnel, bureaucracy and politics, among others, have always proved to be overwhelming. This study describes the informational needs of the people and organizations concerned with Latin America's fisheries sector, and review current fisheries and marine-related publications in this region. a preliminary economic feasibility analysis for the creation and publication of a new monthly Latin American …
Management Of Antarctic Krill, Paul Setliff
Management Of Antarctic Krill, Paul Setliff
Marine Affairs Theses and Major Papers
This study pertains to the problem of international activity in an area of political and ecological sensitivity, the Southern Ocean. Of specific concern is the question of which group of states should have a voice in management of Antarctic krill. The niche filled by krill within the ecosystem and its potential as a fishery is discussed. Past international practice has been affected for the most part by the Antarctic Treaty of 1959 which has maintained a somewhat exclusive "club" of nations as the overseers of Antarctic activity. However, states not party to the 1959 Treaty are becoming interested in the …
A Preliminary Cost-Benefit Analysis Of The Proposed St. Thomas-St. John Sand Mining Project, Random Dubois
A Preliminary Cost-Benefit Analysis Of The Proposed St. Thomas-St. John Sand Mining Project, Random Dubois
Marine Affairs Theses and Major Papers
A territorial ban on beach and sand removal in the U. S. Virgin Islands has resulted in a search for alternative sources. Insecure extra-territorial reserves and high shipping costs have made sand importation prohibitive. Recent surveys conducted in 1977 by the U. S. Geological Survey identified several nearshore sources of aggregate adjacent to the island of St. Thomas. In a 1978 workshop jointly conducted by the Government of the Virgin Islands and the National Oceanic and Atmospheric Administration various alternatives were presented for sand extraction. Two alternatives are examined using a cost benefit approach.
Fisheries Report No. 37 - An Inventory Of The Marine Resources Of The Bunbury Marine Area And Geographe Bay, Michael H. Walker
Fisheries Report No. 37 - An Inventory Of The Marine Resources Of The Bunbury Marine Area And Geographe Bay, Michael H. Walker
Fisheries Research Reports
The marine resources of the Geographe Bay/Bunbury marine area were investigated using a variety of fishing gear i.e. set lines, set nets, trawls, ring nets, beach seines, hand lines, trolling lines, traps and light attraction at night. All the ftsh species caught were documented as to breeding state and food habits.
Commercial species encountered as adults during fishing operations were: bronze whaler, whiskery and gummy sharks, Westralian jewfish, Australian herring, skippy, flathead, oriental bonito, blue and sandy sprat, pilchard, mulloway, whiting, yellowtail scad, flounder, and leatherjacket and as juveniles were: skippy, yellowtail scad, tailor, southern sea garfish, pilchard, blue and …
Fisheries Report No 33 - The Western Rock Lobster Fishery 1975 - 1976, G. R. Morgan, E H. Barker
Fisheries Report No 33 - The Western Rock Lobster Fishery 1975 - 1976, G. R. Morgan, E H. Barker
Fisheries Research Reports
iTshe fishery for the western rock lobster Panultrus ecygnus one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably stable catches. …
Volume 3, Number 1 (January 1979), The Otec Liaison
Volume 3, Number 1 (January 1979), The Otec Liaison
The OTEC Liaison
No abstract provided.
Quaking Aspen - Seed Germination And Early Seedling Growth, United States Department Of Agriculture, Forest Service
Quaking Aspen - Seed Germination And Early Seedling Growth, United States Department Of Agriculture, Forest Service
Forestry
The suckering of aspen (Populus tremuliodes Michx.) as a highly effective means of vegetative propagation is well known and has been widely studied (Baker 1918; Day 1944; Maini 1967; Schier 1974). Less is known about seed propagation, sometimes viewed as having only minor importance because early research (Baker 1918) had indicated that rare seedling establishment was due to low or nonexistent germinability.
Nutrient Losses From Timber Harvesting In A Larch/Douglas-Fir Forest, United States Department Of Agriculture, Forest Service
Nutrient Losses From Timber Harvesting In A Larch/Douglas-Fir Forest, United States Department Of Agriculture, Forest Service
Forestry
Nutrient levels as a result of experimental clearcutting, shelterwood cutting, and group selection cutting--each with three levels of harvesting intensity--were studied in a larch-fir forest in northwest Montana, experimentally logged with a skyline system. None of the treatments altered nutrient levels in an intermittent stream, nor were excessive amounts of nutrients lost in soil below the root zone. Under conditions on this site, skyline logging did not result in surface erosion or nutrient losses that would affect forest management.
Fire - Decay: Interactive Roles Regulating Wood Accumulation And Soil Development In The Northern Rocky Mountains, United States Department Of Agriculture, Forest Service
Fire - Decay: Interactive Roles Regulating Wood Accumulation And Soil Development In The Northern Rocky Mountains, United States Department Of Agriculture, Forest Service
Wildfires
Decay and fire play interactive roles in recycling wood and other organic materials in forest ecosystems, and contribute to the development of high quality soils in the Northern Rocky Mountains. Decayed wood, charcoal, and other decomposed organic matter are the principal media for ectomycorrhizal and nonsymbiotic nitrogen fixing microbes. The activities of these microbes are critical to the growth of forest trees. The balance between decay and fire, as it affects the amount, distribution, and type of organic matter, controls the ability of forest soils to support the growth of trees.
Fisheries Report No 34 - The Status Of The Salt-Water Crocodile In The Glenelg, Prince Regent And Ord River Systems, Kimberley, Western Australia, A. A. Burbidge, H. Messel
Fisheries Report No 34 - The Status Of The Salt-Water Crocodile In The Glenelg, Prince Regent And Ord River Systems, Kimberley, Western Australia, A. A. Burbidge, H. Messel
Fisheries Research Reports
Counts were made of Salt-water Crocodiles (Crocodylus porosus) in the estuarine portions of the Glenelg, Prince Regent and Ord River systems of the Kimberley Division, Western Australia. During the survey 581 crocodiles were seen, including 143 hatchlings. The number of non-hatchling crocodiles in present the Glenelg system is estimated to be 200 to 259, in the Prince Regent 190 to 246 and in the Ord 235 to 306 (95% confidence limits).
The number of non-hatchling crocodiles present in the six Kimberley river systems now counted is estimated to be between 957 and 1243 (95% confidence limits) and we believe that …
Fisheries Report No 38 - The Shark Bay Prawn Fishery (1970 - 1976), J. W. Penn, R. W. Stalker
Fisheries Report No 38 - The Shark Bay Prawn Fishery (1970 - 1976), J. W. Penn, R. W. Stalker
Fisheries Research Reports
The existence of prawn stocks in Shark Bay, Western Australia, has been known since 1904 when the sailing ketch "Rip" on charter to the Western Australian Government, trawled large quantities of prawns from the area between Bernier Island and the mainland, Gale (1905). Although the Fisheries research vessel "Lancelin" trawled potentially commercial quantities of prawns from Shark Bay in the early 1950's, it was not until 1962 that a regular fishery was begun.
Today the prawn stocks of Shark Bay support Western Australia's largest and most consistent prawn fishery, having an annual production currently exceeding 2 000 tonnes. The catch …
Assessment Of Design Alternatives: Proposed Relocation Of Rainbow Marina, Glen Canyon National Recreation Area, Utah-Arizona, Philip E. Flores Associates, Inc.
Assessment Of Design Alternatives: Proposed Relocation Of Rainbow Marina, Glen Canyon National Recreation Area, Utah-Arizona, Philip E. Flores Associates, Inc.
Elusive Documents
No abstract provided.
Plant Productivity And Nutrient Interrelationships Of Perennials In The Mohave Desert, A. Wallace, A. T. Vollmer, R. T. Mueller, J. W. Cha
Plant Productivity And Nutrient Interrelationships Of Perennials In The Mohave Desert, A. Wallace, A. T. Vollmer, R. T. Mueller, J. W. Cha
Memorandum
No abstract provided.
Gas Exchange Of Sonoran Desert Plants, S. R. Szarek, R. M. Woodhouse
Gas Exchange Of Sonoran Desert Plants, S. R. Szarek, R. M. Woodhouse
Memorandum
No abstract provided.
Nitrogen Cycling In Great Basin Desert Soils, J. Skujins, B. Klubek
Nitrogen Cycling In Great Basin Desert Soils, J. Skujins, B. Klubek
Memorandum
No abstract provided.
Biology Of Nematodes In Desert Ecosystems, R. Mankau
Demography Of Termite Colonies As Related To Various Environmental Factors: Nutritional Biochemistry And Physiology Of Termites, W. L. Nutting, J. P. Lafage
Demography Of Termite Colonies As Related To Various Environmental Factors: Nutritional Biochemistry And Physiology Of Termites, W. L. Nutting, J. P. Lafage
Memorandum
No abstract provided.
Seed-Eating Birds, H. R. Pulliam
Demography Of Termite Colonies As Related To Various Environmental Factors: Nutritional Biochemistry And Physiology Of Termites, W. L. Nutting, J. P. Lafage
Demography Of Termite Colonies As Related To Various Environmental Factors: Nutritional Biochemistry And Physiology Of Termites, W. L. Nutting, J. P. Lafage
Memorandum
No abstract provided.
Plant Food Habits Of Rodents In Curlew Valley, E. L. Becker Ii, D. F. Balph, M. H. Balph
Plant Food Habits Of Rodents In Curlew Valley, E. L. Becker Ii, D. F. Balph, M. H. Balph
Memorandum
No abstract provided.
Effects Of Rodents On Germination Of Desert Annuals, O. J. Reichman
Effects Of Rodents On Germination Of Desert Annuals, O. J. Reichman
Memorandum
No abstract provided.
Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J. H. Brown, D. W. Davidson
Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J. H. Brown, D. W. Davidson
Memorandum
No abstract provided.
Responses And Interactions In Desert Plants As Influenced By Irrigation And Nitrogen Application, R. B. Hunter, E. M. Romney, A. Wallace, J. E. Kinnear, T. L. Ackerman, H. O. Hill
Responses And Interactions In Desert Plants As Influenced By Irrigation And Nitrogen Application, R. B. Hunter, E. M. Romney, A. Wallace, J. E. Kinnear, T. L. Ackerman, H. O. Hill
Memorandum
No abstract provided.
Primary Production And Carbon Allocation In Creosotebush: Validation Of The Model, G. L. Cunningham, J. F. Reynolds
Primary Production And Carbon Allocation In Creosotebush: Validation Of The Model, G. L. Cunningham, J. F. Reynolds
Memorandum
No abstract provided.
Jornada Validation Site Report, W. G. Whitford
Tucson Basin Validation Site Report, J. L. Thames
Rock Valley Validation Site Report, F. B. Turner