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Geographic Variation In Contopus Sordidulus And C. Virens North Of Mexico, M. Ralph Browning

Great Basin Naturalist

Geographic variation in plumage color between populations of Contopus sordidulus is minor. The differences in color between the races described by Burleigh (1960) is largely the result of postmortem color changes of museum skins. Variation in wing chord and length of tail between samples does not support recognizing additional races of C. sordidulus. Contopus virens is monotypic. The relationships between sordidulus and virens is unclear.

Nectar-Sugar Concentrations And Flower Visitors In The Western Great Basin, Larry J. Gut, Robert A. Schlising, Carol E. Stopher

Great Basin Naturalist

Nectar-sugar concentrations and major flower visitors were determined for 15 species of plants in the Eagle Lake area of Northeastern California. Sugar concentrations for 12 of these are reported for the first time, with means ranging from a low of 10 percent in Mentzelia laevicaulis to a high of 63 percent in Ranunculus uncinatus. The utilization of the various nectar concentrations varied with the type of flower visitor as well as with the habitat and distributional ranges of the plant and/or animal. Hummingbirds and hawkmoths were not observed visiting the flowers they typically visit in other areas (e.g. Aquilegia and …

Stilt Sandpiper And Hudsonian Godwit In Nevada, C. S. Lawson

Great Basin Naturalist

No abstract provided.

Front Matter, Vol. 37 No. 4

Great Basin Naturalist

No abstract provided.

New Grass Distribution Records For New Mexico And The United States, Stephan L. Hatch

Great Basin Naturalist

New distribution records are given for 13 grasses now found in New Mexico. One of these, Urochloa panicoides Beauv., is a new distribution record for the United States.

Index [And Table Of Contents] To Volume 37

Great Basin Naturalist

No abstract provided.

Population Dynamics Of The Ferruginous Hawk During A Prey Decline, Neil D. Woffinden, Joseph R. Murphy

Great Basin Naturalist

A nesting population of Ferruginous Hawks (Buteo regalis) at the eastern edge of the Great Basin in west-central Utah was studied for three nesting seasons, 1972–1974, during which time a significant decline in jackrabbit numbers occurred. The total number of hawks and nesting pairs varied throughout the study. In 1972, 16 pairs occupied territories and only 1 pair failed to nest. By 1974, however, only 5 pairs and 2 single birds occupied territories. The number of young fledged ranged from 31 in 1972 to 3 in 1974. The nesting phenology of the Ferruginous Hawk and the reproductive period …

A New Species Of Rhopalomyia (Diptera: Cecidomyiidae) From Artemisia Ludoviciana Nuttall (Compositae) In Utah, Raymond J. Gagne

Great Basin Naturalist

Rhopalomyia (Diarthronomyia) subhumilis Gagné, a new species of Artemisia ludoviciana Nuttall (Compositae), is described and its taxonomically important structural features illustrated. The new species is compared to its most similar North American congeners.

A New Fossil Sponge From The Ordovician Garden City Limestone Of Southeastern Idaho, J. Keith Rigby, James K. Gilland

Great Basin Naturalist

The new choristid demosponge, Loganiella johnsoni, is described from the upper part of the Lower Ordovician Garden City Formation of southeastern Idaho. The new sponge is a relatively thin walled, low, subcylindrical form. The skeletal net is composed of tracts of curved rodlike spicules, but details have been lost on all specimens because of extensive silicification. Impressions, however, suggest a close relationship to the choristid Dystactospongia Miller, 1889.

New Synonymy And New Species Of American Bark Beetles (Coleoptera: Scolytidae), Part Vi, Stephen L. Wood

Great Basin Naturalist

New synonymy of American Scolytidae is proposed as follows: Corthylus Erichson ( = Pseudocorthylus Ferrari), Hylesinus Fabricius ( = Leperisinus Reitter), Monarthrum Kirsch ( = Anchonocerus Eichhoff), Corthylus spinifer Schwarz ( = Metacorthylus affinis Fonseca, Corthylus affinis Fonseca), Cryphalus ruficollis Hopkins ( = Cryphalus amabilis Chamberlin, Cryphalus coloradensis Wood), Gnathotrichus retusus (LeConte) ( = Gnathotrichus alni Blackman), Gnathotrichus sulcatus (LeConte) ( = Gnathotrichus aciculatus Blackman), Hypothenemus eruditus Westwood ( = Hypothenemus germari Eichhoff, Stephanoderes myrmidon Eichhoff, Stephanoderes intersetosus Eggers), Hypothenemus seriatus Eichhoff ( = Stephanoderes nitidulus Hopkins, Stephanoderes subopacicollis Hopkins), Hypothenemus obscurus (Fabricius) ( = Stephanoderes asperulus Eichhoff, Stephanoderes cassiae …

Host-Induced Morphological Variations In The Strigeoid Trematode Posthodiplostomum Minimum (Trematoda: Diplostomatidae). Iv. Organs Of Reproduction (Ovary And Testes), Vitelline Gland, And Egg, James R. Palmieri

Great Basin Naturalist

A variety of amphibian, reptilian, avian, and mammalian hosts were used in experimental development of Posthodiplostomum minimum. Results of this study indicate that the organs of reproduction (testes and ovary) as well as the vitelline gland and egg underwent host-induced morphological variations. Due to the lack of host specificity of P. minimum as well as the overlap of reported egg and body sizes of species of Posthodiplostomum, it is apparent that several reported species are not valid.

A Survey Of Breeding And Migratory Birds Southwest Of Farmington, New Mexico, Duane A. Tolle

Great Basin Naturalist

The relative abundance and habitat affinities of breeding and migratory waterfowl were documented for a 16,556 ha (40,880 acre) area of the Navajo Indian Reservation, San Juan County, New Mexico. The objective of the 1973–1974 study was to obtain baseline data for use as part of an environmental assessment for coal gasification plants and an associated strip mine proposed for an area not previously described in ornithological journals.

Roadside breeding-bird surveys resulted in the observation of 26 species of birds, of which the horned lark was most abundant. Additional breeding-bird observations were made during afternoon reconnaissance surveys around stock ponds …

Full Issue, Vol. 37 No. 4

Great Basin Naturalist

No abstract provided.

A New Monotypic Genus Of Chiggers And Four New Species Of Quadraseta From Venezuela (Acari: Trombiculidae), M. L. Goff, J. M. Brennan

Great Basin Naturalist

Carebareia, n. gen., and its type-species, C. johnstoni, n. sp., are described. The genus Quadraseta Brennan, 1970, is redefined and a key to the 11 included species given. Four new species, Quadraseta tachirensis, holotype ex Akodon sp., Q. rotstieri, ex Proechimys guyannensis, Q. mirandae, holotype ex Oryzomys albigularis, and Q. falconensis, ex Sylvilagus floridanus, are described.

Distributional Patterns Of Mammals In Utah, David M. Armstrong

Great Basin Naturalist

Based on a synthesis of recent work on distribution of mammals in Utah, the hierarchy of ecogeographic distributional units proposed by Durrant (1952) is reevaluated by numerical methods. Areographic faunal elements, distinguished on the basis of shapes of distributional ranges in North America, are identified. Relationships are shown between ecogeographic faunal units and areographic faunal elements, and their historical implications are discussed.

End Matter, Vol. 37 No. 4

Great Basin Naturalist

No abstract provided.

A New Name For Galium Scabriusculum (Rubiaceae) Of Utah, Lauramay T. Dempster, Friedrich Ehrendorfer

Great Basin Naturalist

A new name, Galium emeryense, is proposed to substitute for the preempted name G. scabriusculum.

Photosynthetic Fractionation Of Oxygen Isotopes, A Study With Elodea Canadensis, Glen E. Martin

Theses and Dissertations

Bubbles of oxygen from Elodea canadensis were collected and found 5 per mil enriched in 0-18. This confirms the results of both Dole and Vinogradov, who found 0-18 enrichment of photosynthetic oxygen relative to its source, i.e. water. Photosynthesis and respiration appear to have produced the Dole effect, i.e. the 22 per mil 0-18 enrichment of atmospheric oxygen relative to ocean water, its probable source. These results are contrary to findings for both UV photolysis and electrolysis of water both evolving oxygen found depleted in 0-18.

Feeding Biology And Ecological Aspects Of A Cancroid Crab Cancer Oregonensis (Dana) Rathbun (Decapoda, Brachyura), Gary L. Child

Theses and Dissertations

In the San Juan Archipelago, cancer oregonensis (Dana) Rathbun (Fig. 1) is abundant and distributed from the low intertidal zone to -435 m subtidally (Rathbun, 1904). Ricketts and Calvin (1974) refer to c. oregonensis as the most common Cancer species in this area.

Leaf Litter Processing In Aquatic Systems Two Variable Model, Boyd Jay Hanson

Theses and Dissertations

The adequacy of the negative exponential model with one independent variable, days or accumulated time, as a descriptive equation for aquatic leaf litter processing was examined. The effect of adding a second independent variable, degree days or accumulated temperature, to the model was also examined. The two variable negative exponential model was shown to have at least two advantages over the single variable model. The two variable model adequately fits litter processing data for more cases than the single variable model. The expanded model also allows determination of rate coefficients for various temperature levels of the experiment rather than assuming …

Algal Response To A Thermal Effluent : Study Of A Power Station On The Provo River, Utah, Usa, Lorin E. Squires

Theses and Dissertations

The effect of a thermal effluent on the attached algae of the Provo River, Utah, USA, was studied from 1975 to 1977. Data for macroscopic and microscopic algae were collected and analyzed. Diatoms, Cladophora glomerata, and Hydrurus foetidus dominated the flora. The thermal effluent significantly affected the algal flora in a section of river 100 to 135 meters long immediately below the discharge point. Cladophora growth was increased and Hydrurus was absent in this area. In addition, diatom production was often higher and diversity lower than in the rest of the river. Community structure was unique from all other adjacent …

Computer Graphics: Conversion Of Contour Line Definitions Into Polygonal Element Mosaics, Thomas W. Sederberg

Theses and Dissertations

There has been a disparity between the conventional method of describing topographic surfaces (i.e. contour line definition) and a format of surface description often used in continuous-line computer graphics (i.e. panel definition). The two differ enough that conversion from contours to panels is not a trivial problem. A computer program that performs such a conversion would greatly facilitate continuous tone display of topographical surfaces, or any other surface which is defined by contour lines.

This problem has been addressed by Keppel and alluded to by Fuchs. Keppel's is a highly systematic approach in which he uses graph theory to find …

Editorial Note, Eugene Wu

Journal of East Asian Libraries

No abstract provided.

What's New In Technical Processing, Yongxiang Lai, Thomas Hun-Tak Lee, Effie Y. H. Chen

Journal of East Asian Libraries

No abstract provided.

Special Reports, Tao-Tai Hsia

Journal of East Asian Libraries

No abstract provided.

Organizations And Institutions, Eugene Wu, Shizue Matsuda, Raymond Mun Kong Lum, Eiji Tutani, Paul P. W. Cheng, Key Paik Yang, Warren M. Tsuneishi, Frank Joseph Shulman, John T. Ma, Anna Liang U, Ernest J. Tsai, Teruko Kyuma Chin

Journal of East Asian Libraries

No abstract provided.

Notes To Our Members, Heinz K. Meier

Swiss American Historical Society Newsletter

1. The 1977 SAHS Annual Meeting

This year's annual meeting will take place on October 29 at the Faculty Club of the University of Pennsylvania in Philadelphia. A separate invitation with program will be mailed to our members in October.

Librarians, Eugene Wu, Weiying Wan, Tsuen-Hsuin Tsien, Thomas C. T. Kuo, Key Paik Yang, Eugene De-Benko, Emiko Mashiko Moffitt

Journal of East Asian Libraries

No abstract provided.

Resources On China, Japan And Korea Within The Presbyterian Historical Society Archives In Philadelphia, Kay L. Dove

Journal of East Asian Libraries

No abstract provided.

An Announcement, Eugene Wu

Journal of East Asian Libraries

No abstract provided.