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Joseph O'Brien's Images

Title: Plant Pathologist
Organization: USDA Forest Service
Unit: Forest Health Protection
Country: United States

Joe is a plant pathologist with the U.S. Forest Service in St. Paul, Minnesota. in addition to photography, his major interests include tree diseases in forests, woodlands and urban areas, hazard tree identification and mitigation, and mycology. Joe is a graduate of the University of Michigan (B.S. Forestry and M.S. Forest Pathology) and the University of Minnesota (Ph.D. Plant Pathology), and currently works at the Northern Research Station on the University of Minnesota's St. Paul campus.
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6 Images of 3 Subjects View Subject List View Image Descriptions View Thumbnails
6 Images    

Page: 1/1     Display:

5053062
5053062
beech scale
Cryptococcus fagisuga
Infestation
Joseph O'Brien

5048095
5048095
beech scale
Cryptococcus fagisuga
Infestation
Joseph O'Brien

5048096
5048096
beech scale
Cryptococcus fagisuga
Infestation
Joseph O'Brien

5049003
5049003
beech scale
Cryptococcus fagisuga
Sign
Joseph O'Brien

5051070
5051070
periodical cicada
Magicicada spp.
Feature(s)
Joseph O'Brien

5050027
5050027
cooley spruce gall adelgid
Adelges cooleyi
Infestation
Joseph O'Brien

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