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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.
Remove Filters: Abiotic Damage(X) Hardwood(X) 5 Sizes Available(X) Portrait(X)
6 Images of 3 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
5052029 frost and winter injury (general) Oak tree affected by late frost.
5030034 lightning Long lightning wound on tree
5059018 sunscald
5059019 sunscald
5055027 lightning
5052017 frost and winter injury (general) frost crack

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