Theses and Dissertations at Montana State University (MSU)
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Item Taxonomic studies on click-beetles (Coleoptera: Elateridae)(Montana State University - Bozeman, College of Letters & Science, 2019) Etzler, Frank Eric; Chairperson, Graduate Committee: Michael A. Ivie; Paul J. Johnson was a co-author of the article, 'Athoplastus johnson and etzler (Coleoptera: Elateridae: Dendrometrinae), a new genus of click beetle from the northwestern continental USA' in the journal 'Coleopterists bulletin' which is contained within this dissertation.Click-beetles (Coleoptera: Elateridae) have historic difficulties at the subfamilial, tribal, and generic level, with many genera poorly defined at the global scale. This dissertation makes the definitions of four groups work world-wide to enable easier communication between regions. These clearer definitions also serve as foundations for future studies at higher levels, such as the tribal and subfamilial level. In this work, two new genera are described, seven species are described as new, 109 new combinations are proposed, and 5 new names are proposed to correct new homonyms. Keys to species are provided for the North American species in Athoplastus and Hemicrepidius and the species north of Mexico for Paradonus. A key to genera in the Limonius genus-group is provided, with a key to species provided for the newly described genus in that group. Important morphological characters are illustrated for each genus or genus group, and habitus photos are provided for all species in the examined regions for the genera Athoplastus, Hemicrepidius, and Paradonus.Item Classification of the grasslands, shrublands, woodlands, forests and alpine vegetation associations of the Custer National Forest portion of the Beartooth Mountains in Southcentral Montana(Montana State University - Bozeman, College of Letters & Science, 2012) Williams, Kristin Louise; Chairperson, Graduate Committee: David Roberts; Dave W. Roberts was a co-author of the article, 'Classification of shrubland associations of the Beartooth Mountains study area and comparison to existing grassland and shrubland habitat type classifications' in the journal 'Western North American naturalist' which is contained within this thesis.; Dave W. Roberts was a co-author of the article, 'Classification of woodland and forested vegetation associations of the Beartooth Mountains study area and comparison with existing woodland and forested habitat type classifications' in the journal 'Western North American naturalist' which is contained within this thesis.; Dave W. Roberts was a co-author of the article, 'Classification of the alpine vegetation associations of the Beartooth Mountains study area' in the journal 'Western North American naturalist' which is contained within this thesis.The purpose of this thesis was to classify and describe low-elevation grassland and shrubland vegetation, mid-elevation woodland and forested vegetation, and high elevation alpine vegetation associations of the Beartooth Mountains study area and to compare newly derived associations with existing habitat type and community type classifications of ecologically relevant environments in Montana, Wyoming and Idaho. Five grassland/shrubland associations, twelve woodland/forested associations and thirteen alpine associations were classified and described for the Beartooth Mountains study area. Prior to this thesis, no comprehensive vegetation association classification of the Beartooth Mountains, the highest, largest and easternmost alpine region in Montana, has been conducted.