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Filtering by: Creator D��Almeida, Arsene Academic Affiliation Botany and Plant Pathology

The effects of logging on periphyton communities of coastal streams

Creator:

Hansmann, Eugene W. (Eugene William), 1933-

Abstract:

The purpose of this study was to investigate the effects of logging on the productivity, structure and biomass of a periphyton community developed in mountain streams. The three streams used in this investigation were located in the coast range of Lincoln County, Oregon. They were selected for similarity of habitat,...

Resource Type:

Dissertation

Full Text:

coastal streams AN ABSTRACT OF THE THESIS OF EUGENE WILLIAM HANSMANN for the Ph. D. (Name) (Degree
A biosystematic study in the genus Aster, section Aster, in western North America

Creator:

Dean, Milton Lee

Abstract:

A biosystematic investigation was undertaken in 15 species and three subspecies of the genus Aster, in western North America. Previous studies had been based entirely on external morphological features, and it was believed that much could be learned about the natural affinities of the taxa by exploring their cytological and...

Resource Type:

Dissertation

Full Text:

AN ABSTRACT OF THE THESIS OF Milton Lee Dean for the Ph. D