Browse by Subject
Contact Information

Northern Research Station
11 Campus Blvd., Suite 200
Newtown Square, PA 19073
(610) 557-4017
(610) 557-4132 TTY/TDD

Contact Us


The Northern Research Station has realigned our staff from 37 Research Work Units and Programs into 14 new Research Work Units.

RWU-4351 is now part of NRS-7, Center for Research on Ecosystem Change.

Research Questions

Randy Kolka, Project Leader
(218) 326-7115


Website Questions

Sharon Hobrla, Webmaster
(517)355-7740, ext. 111


Correspondence may be sent to:

USDA Forest Service, NRS
Forestry Sciences Laboratory
1831 Hwy 169 East
Grand Rapids, MN 55744

Phone:(218) 326-7100
Fax: (218) 326-7123



Last Modified: 12/21/2007