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The Ecology Of A High-Latitude Rocky Intertidal Community: Processes Driving Population Dynamics In Kachemak Bay, Alaska, Michael Leslie Carroll
The Ecology Of A High-Latitude Rocky Intertidal Community: Processes Driving Population Dynamics In Kachemak Bay, Alaska, Michael Leslie Carroll
Marine Biology
No abstract provided.
Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem, Bruce Williams Dale
Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem, Bruce Williams Dale
Theses (Unassigned)
Winter wolf (Canis lupus) predation and functional response in wolf - caribou (Rangifer tarandus) dynamics were investigated in a multiple ungulate prey ecosystem in Gates of the Arctic National Park, Alaska. Prey selection, prey availability, prey switching, kill rates, and food availability for 4 wolf packs were estimated in March 1989, March 1990, and November 1990. Estimates for these study periods reflected near record, average, and early winter snow conditions, respectively. Wolves killed predominately caribou even if moose (Alces alces) or Dall sheep (Ovis dalli) were more abundant. Prey selection varied with study period; however, per wolf kill rates and …
The Significance Of Marine-Derived Biogenic Nitrogen In Anadromous Pacific Salmon Freshwater Food Webs, Thomas Clayton Kline
The Significance Of Marine-Derived Biogenic Nitrogen In Anadromous Pacific Salmon Freshwater Food Webs, Thomas Clayton Kline
Fisheries
The natural abundance of the stable isotope ratios $\sp{15}$N/$\sp{14}$N and $\sp{13}$C/$\sp{12}$C expressed as $\delta\sp{15}$N and $\delta\sp{13}$C was used to trace biogenic nutrients delivered by returning adult anadromous Pacific salmon into freshwater systems. These systems were Sashin Creek, a rapidly flushing stream located on Baranof Island, southeastern Alaska and Iliamna Lake, the major sockeye salmon, Oncorhynchus nerka, nursery lake in the Kvichak River watershed, Bristol Bay, southwestern Alaska. Marine-derived nitrogen (MDN) was quantifiable by use of an isotope mixing model based on comparison of biota $\delta\sp{15}$N in areas used for spawning by anadromous salmon with salmon-free controls within the same watershed. …
Effects Of Antimony Mining On Stream Invertebrates And Primary Producers In Denali National Park, Alaska, Kathleen Wedemeyer
Effects Of Antimony Mining On Stream Invertebrates And Primary Producers In Denali National Park, Alaska, Kathleen Wedemeyer
Theses (Unassigned)
Heavy metals, primarily antimony, arsenic and manganese from antimony mines in Denali National Park, Alaska impacted all levels of the stream ecosystem. Decreased algal, moss and macroinvertebrate abundance (but not changes in macroinvertebrate trophic organization) were all clearly associated with mining activity in Slate and Eldorado creeks. Crustacea, Chironomidae (Diptera), Hydracarina (Arachnida), Nemouridae (Plecoptera), and Zapada (Nemouridae) decreased in relative abundance with metal pollution while Capniidae (Plecoptera), Nemoura (Nemouridae), and Podmosta (Nemouridae) increased in relative abundance at mine sites. The data from Stampede Creek demonstrated that mineralized but unmined stream reaches may be impacted by heavy metals. Unexpectedly higher selenium …
The Ecology Of Benthic Carbon Cycling In The Northern Bering And Chukchi Seas, Jacqueline Mary Grebmeier
The Ecology Of Benthic Carbon Cycling In The Northern Bering And Chukchi Seas, Jacqueline Mary Grebmeier
Marine Biology
No abstract provided.
The Northern Engineer, Vol. 18, No. 2 & 3 (Summer And Fall 1986), University Of Alaska Fairbanks. Geophysical Institute
The Northern Engineer, Vol. 18, No. 2 & 3 (Summer And Fall 1986), University Of Alaska Fairbanks. Geophysical Institute
The Northern Engineer
No abstract provided.
Trophic Dynamics In Marine Nearshore Systems Of The Alaskan High Arctic, Kenneth H. Dunton
Trophic Dynamics In Marine Nearshore Systems Of The Alaskan High Arctic, Kenneth H. Dunton
Marine Biology
No abstract provided.
Life Histories And Community Structure Of The Caddisflies (Trichoptera) Of Two Alaskan Subarctic Streams, John G. Irons
Life Histories And Community Structure Of The Caddisflies (Trichoptera) Of Two Alaskan Subarctic Streams, John G. Irons
Fisheries
The ecology of Trichoptera was studied in two streams in interior Alaska. Monument Creek and West Fork are characterized by cold water temperatures, low allochthonous input and periphyton biomass, and lengthy ice cover. Nine species were found, Rhyacophila vofixa ? (Rhyacophilidae), Glossosoma verdona, G. alascense (Glossosomatidae), Brachycentrus americanus (Brachycentridae), Hydatophylax variabilis, Ecclisomyia conspersa, Onocosmoecus unicolor, Chyranda centralis and Apatania crymophila (Limnephilidae). There were four shredders, three scrapers, one omnivore, and one predator. Within shredders and scrapers, species had sequentially overlapping life histories, perhaps allowing functionally similar species to use the same food resources. Latitudinal gradients in the North American Trichoptera …
Trophic Dynamics In Marine Nearshore Systems Of The Alaskan High Arctic (Kelp, Laminaria, Carbon Isotope, Productivity), Kenneth Harlow Dunton
Trophic Dynamics In Marine Nearshore Systems Of The Alaskan High Arctic (Kelp, Laminaria, Carbon Isotope, Productivity), Kenneth Harlow Dunton
Theses (Unassigned)
This dissertation describes two ecological studies in the arctic Alaskan nearshore zone: the productivity and growth strategies of arctic kelp and the use of natural carbon isotope abundances to examine food web structure and energy flow in the marine ecosystem. Linear growth of the kelp, Laminaria solidungula is greatest in winter and early spring when nutrients are available for new tissue growth. Since over 90% of this growth occurs in complete darkness beneath a turbid ice canopy, the plant draws on stored food reserves and is in a carbon deficit during the ice covered period. Annual productivity of L. solidungula …
Biology And Management Of White Spruce Seed Crops Reforestation In Subarctic Taiga Forests, J. Alden
Biology And Management Of White Spruce Seed Crops Reforestation In Subarctic Taiga Forests, J. Alden
Bulletin
Seed production is the most dramatic event in the life cycle of trees and is the first step in forest regeneration. Embryos of white spruce are fragile during germination, and they depend on vigorous seeds for survival and growth. Mortality of white spruce seeds and seedlings is high in northern forests because climate and microhabitat are often unfavorable for seed germination and seedling establishment. Large quantities of high-quality seed are required for natural and artificial regeneration of white spruce forests at high latitudes. The first chapter of this bulletin describes the reproductive process of white spruce and factors that affect …
Seasonal Changes Of Attached Algae In Two Alaskan Subarctic Stream, Patricia R. Anderson
Seasonal Changes Of Attached Algae In Two Alaskan Subarctic Stream, Patricia R. Anderson
Fisheries
Very few seasonal studies of attached stream algae (periphyton) have been conducted in the arctic and subarctic. Periphyton were sampled for 13 months in Monument Creek, a second-order stream, and in the West Fork of the Chena River, a fourth-order stream near Fairbanks, Alaska. Seasonal changes in periphyton community structure, density (cells ∙ m-2), biovolume (μm3), total chlorophyll a (mg ∙ m-2), and physical and chemical factors were determined. Diatoms dominated the community throughout the year in number and biovolume. Mean annual periphyton density was moderately high in West Fork and mean annual biomass (as total chlorophyll a) was low …
Bathymetry Of Alaskan Arctic Lakes: A Key To Resource Inventory With Remote-Sensing Methods, Jack C. Mellor
Bathymetry Of Alaskan Arctic Lakes: A Key To Resource Inventory With Remote-Sensing Methods, Jack C. Mellor
Marine Biology
Water depth is a major factor in predicting resources associated with tens-of-thousands of uninventoried Alaskan arctic lakes. Lakes were studied for physical, chemical, and biological resources related to water depth in 3 specific areas along a north/south transect extending from Pt. Barrow on the Arctic Ocean to the foothills of the Brooks Range. Side-Looking Airborne Radar (SLAR) imagery was acquired over the same study transect to investigate its application for determining lake depth. Ice thicknesses, necessary for the interpretation of depth contours from SLAR imagery, were measured along with other parameters in the study lakes throughout the winter 1978-79. This …
Cost Of Exploration For Metallic Minerals In Alaska - 1982, P.A. Metz, B.W. Campbell
Cost Of Exploration For Metallic Minerals In Alaska - 1982, P.A. Metz, B.W. Campbell
MIRL Report Publications
This report prepared by the professional staff of the Mineral Industry Research Laboratory (M.I.R.L.), is a contemporary and detailed source of information relating to the costs of conducting mineral exploration for metallics in Alaska with commentary on the availability of essential services. As such it will serve the needs of established mining companies engaged in exploration ventures as well as newcomers to the Alaskan scene.
Nitrogen Resource Analysis And Modelling Of An Eelgrass (Zostera Marina L.) Meadow In Izembek Lagoon, Alaska, Frederick Tilton Short
Nitrogen Resource Analysis And Modelling Of An Eelgrass (Zostera Marina L.) Meadow In Izembek Lagoon, Alaska, Frederick Tilton Short
Theses (Unassigned)
Nitrogen limitation in beds of eelgrass, Zostera marina L., was examined by correlating plant standing stock and sediment nitrogen supplies, by measurement of nitrogen uptake in eelgrass roots and leaves, and by experimental manipulation of plant-nitrogen interaction. Eelgrass standing stock and sediment nitrogen across an eelgrass meadow were analyzed. Correlation was found between the integrated interstitial ammonium pool and shoot density and other morphological characteristics. A model of eelgrass growth predicted the effect of nitrogen utilization on biomass production and growth rates; nitrogen limitation controlled growth throughout the summer in ammonium-poor eelgrass beds but only at the peak growth periods …
Life Histories And Community Structure Of Ephemeroptera And Plecoptera In Two Alaskan Subarctic Streams, Allen L. Howe
Life Histories And Community Structure Of Ephemeroptera And Plecoptera In Two Alaskan Subarctic Streams, Allen L. Howe
Fisheries
Development of water quality and quantity standards required for improved management of stream fisheries depends on understanding life cycles of the major benthic components. Because temperature is a major factor influencing aquatic insect life histories, subarctic streams provide excellent opportunities to examine organisms existing under extreme environmental conditions. Life histories and community structure of Ephemeroptera and Plecoptera were examined in two Alaskan subarctic streams during 1979 and 1980. Biweekly benthos samples were collected during the ice-free period in a second and a fourth order stream. Seventeen stonefly species and at least seven mayfly species were collected as nymphs or adults. …
Nutritional Ecology Of The Denali Caribou Herd, Rodney Dean Boertje
Nutritional Ecology Of The Denali Caribou Herd, Rodney Dean Boertje
Theses (Unassigned)
No abstract provided.
Fire Ecology And Population Biology Of Two Taiga Shrubs, Lingonberry, Vaccinium Vitis-Idaea And Alpine Blueberry, Vaccinium Uliginosum, Bonnie Faith Friedman
Fire Ecology And Population Biology Of Two Taiga Shrubs, Lingonberry, Vaccinium Vitis-Idaea And Alpine Blueberry, Vaccinium Uliginosum, Bonnie Faith Friedman
Theses (Unassigned)
No abstract provided.
Application Of Palynological Techniques For Correlation Of Coal Seams In The Lower Lignite Creek Area, Nenana Coal Field, R. Mcfarlane
Application Of Palynological Techniques For Correlation Of Coal Seams In The Lower Lignite Creek Area, Nenana Coal Field, R. Mcfarlane
MIRL Open File Reports
This study concerns spores and pollen in the coals of the lower Lignite Creek area in the Nenana Coal Field, which is operated by Usibelli Mining Company. The seams studied are part of the Suntrana Formation which contains a large portion of the coal reserves of Nenana coal. These coals are mid-Miocene in age and are separated from each other by cyclic sandstone, clay and silt deposits, which reflect alternating periods of coal forming swamps and depositing streams. A preliminary study of the mega and micro botanical fossils of this area was made in 1969 by Wolfe and Leopold (Wahrhaftig …
A Numerical Analysis Of The Distribution Of The Benthic Infauna Of The Southeastern Bering Sea Shelf, Karl E. Haflinger
A Numerical Analysis Of The Distribution Of The Benthic Infauna Of The Southeastern Bering Sea Shelf, Karl E. Haflinger
Marine Biology
The continental shelf region of the southeastern Bering Sea may be classified into five provinces (station groups) based on infaunal distribution. Three large station groups lie in adjacent bands extending from the Alaskan coast to the shelf break, roughly paralleling the bathymetry. Two smaller groups occupying positions at the head of Bristol Bay and off Nunivak Island were identified. Stations in the northwestern section of the study area (near the Pribilof Islands) show no strong affinity to the major station groups. Fourteen major biocoenoses identified on the basis of species distribution show strong correlation with the spatial positioning of station …
Hydrologic Properties Of Subarctic Organic Soils, Douglas L. Kane, Richard D. Seifert, George S. Taylor
Hydrologic Properties Of Subarctic Organic Soils, Douglas L. Kane, Richard D. Seifert, George S. Taylor
WERC Publications
The need for understanding the natural system and how it responds to various stresses is important; this is especially so in an environment where the climate not only sustains permafrost, but develops massive seasonal frost as well. Consequently, the role of the shallow surface organic layer is also quite important. Since a slight change in the soil thermal regime may bring about a phase change in the water or ice, therefore, the system response to surface alterations such as burning can be quite severe. The need for a better understanding of the behavior and properties of the organic layer is, …
Bibliography Of The Fishes Of The Beaufort Sea, Wilma E. Pfeifer
Bibliography Of The Fishes Of The Beaufort Sea, Wilma E. Pfeifer
Biological Papers of the University of Alaska
This bibliography was prepared to serve as a reference base for further studies in the area, particularly as related to the impact of petroleum exploratory activities on the fish fauna. Included are all discovered references dealing with fishes of the Beaufort Sea and/or immediately adjacent regions. Streams of the arctic coast of North America have been included, since these are important to the anadromous fishes of the area. A number of Russian references containing information on the distribution, utilization, biology, etc, of Beaufort Sea species in Russian waters have also been included. Preparation of the bibliography was supported by the …
Revegetation Research On Amchitka Island, A Maritime Tundra Location In Alaska: Final Report, Wm. W. Mitchell
Revegetation Research On Amchitka Island, A Maritime Tundra Location In Alaska: Final Report, Wm. W. Mitchell
University of Alaska Agricultural Experiment Station
Revegetation studies commenced by the Alaskan Agricultural Experiment Station in 1970 on Amchitka Island culminated in 1973 with the seeding of disturbed areas associated with the nuclear testing program. Cool temperatures coupled with strong winds and a high incidence of fog and cloud cover impose a tundra aspect on Amchitka, one of Alaska's most southerly land areas. Natural revegetation is undependable for the near term. Twenty-two perennial grasses, two clovers, and four annual grasses were tested on different soil types at low to medium-high (480 ft) elevation sites. At higher elevations severe winds and frost action maintain a barren-ground aspect. …
An Aleut Bibliography, Dorthy M. Jones, John R. Wood
An Aleut Bibliography, Dorthy M. Jones, John R. Wood
ISER Reports
No abstract provided.
Digestibility Of Indigenous Plants Utilized By Rangifer Tarandus, Steven John Person
Digestibility Of Indigenous Plants Utilized By Rangifer Tarandus, Steven John Person
Theses (Unassigned)
No abstract provided.
Ecological Studies Of The Benthic Fauna In An Arctic Estuary, James John Crane
Ecological Studies Of The Benthic Fauna In An Arctic Estuary, James John Crane
Marine Biology
Distributions and abundances of benthic fauna are described for the nearshore Beaufort Sea adjacent to the mouth of the Colville River. Harrison Bay, Simpson Lagoon, and the shallow waters seaward of the barrier islands were sampled with a small bottom trawl and grab during the late summer of 1971. This survey was part of a larger effort by the University of Alaska to obtain baseline information prior to oil exploration and development. Forty-seven species, dominated numerically by Crustacea, Hollusca, and Polychaeta were studied from a collection of 86 samples. The isopod, Mesidotea entonon, and the mysid, Mysis oculata were common …
Nanook News, Vol. 17, No. 02 (September 14, 1973), N/A N/A
Nanook News, Vol. 17, No. 02 (September 14, 1973), N/A N/A
Nanook News
No abstract provided.
Effects Of Crude Oil Treated Seawater On The Metabolism Of Phytoplankton And Seaweeds, W.E. Shiels
Effects Of Crude Oil Treated Seawater On The Metabolism Of Phytoplankton And Seaweeds, W.E. Shiels
Marine Biology
Prudhoe Bay crude oil was applied to natural populations of phytoplankton from Port Valdez, Alaska to examine its effect on photosynthesis. Studies were made at various times between July 1971 and June 1972., at oil concentrations ranging from about 0.001 - 10 ppm, and under various conditions of temperature, light and exposure time. Varying degrees of photosynthetic inhibition and stimulation were observed, apparently resulting from a complex interaction of physical, chemical and biological factors and the amount of oil present. Inhibition of photosynthesis occurred at oil concentrations of 0.06 ppm or greater during June, with stimulation observed at about 0.003 …
The Ecology Of The Benthic Microalgae In The Sublittoral Zone Of The Chukchi Sea Near Barrow, Alaska, Grant Matheke
The Ecology Of The Benthic Microalgae In The Sublittoral Zone Of The Chukchi Sea Near Barrow, Alaska, Grant Matheke
Marine Biology
No abstract provided.
Food Habits, Vocalizations, And Territoriality Of Alaskan Red Squirrels (G. Tamiasciurus), Frances Ann Nodler
Food Habits, Vocalizations, And Territoriality Of Alaskan Red Squirrels (G. Tamiasciurus), Frances Ann Nodler
Theses (Unassigned)
No abstract provided.
Factors Affecting Water Management On The North Slope Of Alaska, Julian Kemble Greenwood
Factors Affecting Water Management On The North Slope Of Alaska, Julian Kemble Greenwood
Theses (Unassigned)
No abstract provided.