(Name of student) FOREST SUCCESSION IN WESTERN OREGON

This study was designed to learn the effect a specific herbi-cide practice on plant communities. Data were obtained from brushfields that had been aerially sprayed with 2, 4-D (2,4 dichiorophenoxyacetic acid) and/or 2,4, 5-T (2,4, 5 trichlorophenoxyacetic acid). Qualitative data on species composition, cover percent, height, response to herbicide ançl site description were collected. Quantitative data dealing with frequency, density, and dispersion were also collected. These data were ana-lyzed to determine the influence of dormant treatments involving these herbicides on the distribution and vegetational pattern.of the forbs and herbs, as well as the woody plants. The developmental stage of the vegetation greatly influenced its response to the applied chemical. That is, an increase in,den-sity and height of the brush cover was accompanied by increase