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Life Histories Behavior and Space Partitioning in Selected Species of Western North American Plecoptera (open access)

Life Histories Behavior and Space Partitioning in Selected Species of Western North American Plecoptera

Five species of stoneflies (Zapada haysi, Plumiperla diversa, Taenionema pacificum, Isoperla petersoni, Arcynopteryx compacta) from the North Slope and Interior of Alaska were examined for seasonal patterns of emergence of adults and growth of nymphs. Generally growth was retarded during the winter in this region, and all species except I. petersoni completed growth prior to January. The life cycles of six stonefly species (Prostoia besametsa, Triznaka signata, Sweltsa coloradensis. Isoperla fulva, Skwala parallela, Claassenia sabulosa) are described from northern New Mexico. In this region growth was generally less retarded during the winter than in Alaska; P. besametsa completed all nymphal growth during late fall and winter. Drumming behavior of a Colorado population of Pteronarcella badia was described using an evolutionary framework to explain the maintenance of signal variation in this species. Laboratory experiments were used to explore the effect of intraspecific and interspecific interactions on spatial partitioning in P. badia and Claassenia sabulosa. P. badia exhibited clumping and distributed itself as the surface area of substrate in low densities; however, in the presence of C. sabulosa its distribution was random and different from available surface area. A field study was used to examine spatial partitioning by three New Mexico stonefly …
Date: August 1988
Creator: Hassage, Rodney Lynn, 1947-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Alaskan Native Social Integration and Academic Achievement (open access)

Alaskan Native Social Integration and Academic Achievement

The variables communication skills, state anxiety, communication apprehension, and level of integration are studied in relation to the assimilation of Alaskan Natives into a western-culture university. Specifically, the differences in communication skills between the two cultures and their effects on course grades are addressed. Results of the statistical analyses (ANOVA, MANOVA, discriminant function analysis, multiple regression) were not significant, most likely due to the small Alaskan Native sample size. The most significant relationship appeared between situational communication apprehension and the ethnicity of the interaction partner. Other results were directional, indicating that variables may be related to assimilation of Native students into a western university environment. Further research and replication is warranted, using an adequate sample of Alaskan Natives.
Date: December 1988
Creator: Strohmaier, Mahla
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Selected Significant Mineral Deposits in Alaska: A Minerals Availability System Overview (open access)

Selected Significant Mineral Deposits in Alaska: A Minerals Availability System Overview

Report issued by the U.S. Bureau of Mines discussing significant Alaskan mineral deposits. As stated in the abstract, "this Bureau of Mines publication presents a summary of mining activity in Alaska, as well as institutional and infrastructural factors affecting mineral development in Alaska" (p. 1). This report includes maps, tables, and illustrations.
Date: 1988
Creator: Baggs, Donald W.; Northam, Michael J.; Meyer, Mark P. & Maas, Kenneth M.
Object Type: Report
System: The UNT Digital Library