Joseph O'Brien's Images
Title: Plant PathologistOrganization: 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. |
| 10 Images of 4 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 1198021 | porcupine | Erethizon dorsatum | Although climbing an aspen to avoid the photographer, these slow-moving creatures like to eat the bark of pine trees in the Lake States. |
| 5031016 | porcupine | Erethizon dorsatum | |
| 5031017 | porcupine | Erethizon dorsatum | |
| 5029004 | porcupine | Erethizon dorsatum | |
| 5034005 | red fox | Vulpes vulpes | |
| 5033017 | American beaver | Castor canadensis | |
| 5033018 | American beaver | Castor canadensis | dam |
| 5033019 | American beaver | Castor canadensis | tree fall caused by beaver chewing |
| 5033041 | white-tailed deer | Odocoileus virginianus | buck rub |
| 1198004 | porcupine | Erethizon dorsatum | Chewing damage |
