The Prairie Horned Lark (Otocoris alpestris praticola) on Mount Washington, N. H.

Ecological Zones: A Hike Up Mount Washington

Limited Phylogeographic Signal in Sex-Linked and Autosomal Loci Despite Geographically, Ecologically, and Phenotypically Concordant Structure of mtDNA Variation in the Holarctic Avian Genus Eremophila

Phylogeographic studies of Holarctic birds are challenging because they involve vast geographic scale, complex glacial history, extensive phenotypic variation, and heterogeneous taxonomic treatment across countries, all of which require large sample sizes. Knowledge about the quality of phylogeographic information provided by different loci is crucial for study design. We use sequences of one m...

Spatial Factors Affect Primary Succession on the Muddy River Lahar, Mount St. Helens, Washington

We surveyed vegetation 28 summers after the 1980 eruption of Mount St. Helens, Washington spawned a massive lahar. Our goals were to describe vegetation patterns early in primary succession; determine factors associated with these patterns; and seek evidence for assembly rules. We determined species composition, plot position and surface features in 151 plots. Multiple regression, redundancy an...

Tertiary Low-angle Faulting and Related Gold and Copper Mineralization on Mount Washington, Vancouver Island

The structural style of Vancouver Island, ar perceived by thr author in the course of reconni!issance mapping for the Geological Survey of Canada. 1963 to 1981. was one of rather rigid tilted blocks. separated by numerous high-angle faults. That concept has now been shown to be incomplete and in need of revision. Firstly. deep seismic soundings carried out in I984 under the LITHOPROBE program. ...

Increasing deterministic control of primary succession on Mount St. Helens, Washington

Question: Does the relative importance of stochastic and deterministic factors change during primary succession? Location: Small depressions (potholes) located onMount St. Helens, Washington (4611305100N, 12210901000W, 1290m). Methods: Pothole vegetation was described in 1993, 1997 and from 2001 to 2008. Explanatory variables included location and elevation (spatial factors), soil factors and L...