US Forest Service Research & Development
Contact Information
  • US Forest Service Research & Development
  • 1400 Independence Ave., SW
  • Washington, D.C. 20250-0003
  • 800-832-1355
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Extracting a northern goshawk from a net.

Mariko Yamasaki

Team Leader / Research Wildlife Biologist
271 Mast Road
New Hampshire
United States

Phone: 603-868-7659
Contact Mariko Yamasaki

Current Research

I work on forest management issues that affect the quality and quantity of vertebrate wildlife habitat availability in the northeastern US, and I provide useful wildlife-silvicultural habitat guidance for forest managers on working forest landscapes and across non-industrial forest landscapes.

Research Interests

We continue to work on the influence of silvicultural practices and land capability on species-habitat relationships across working forest landscapes as well as urbanizing forest landscapes. Forest raptors, passerine birds, small mammals, bats, and salamanders provide numerous opportunities to investigate these habitat relationships for forest managers desiring integrated wildlife/timber practices in northern forest ecosystems. We also have an increasing interest in the level of contaminants, particularly mercury, in forest-dwelling species.

Why This Research is Important

There is a pressing need to provide forest managers with information and strategies to maintain vertebrate diversity and habitat quality in the face of increasing urbanization of forest landscapes in the northeastern US as well as provide guidance to forest managers on working forest landscapes.


  • University of Michigan, M.S. Natural Resources (Wildlife)
  • University of Michigan, B.S. Anthropology-Zoology

Professional Organizations

  • The Wildlife Society
  • Society of American Foresters (SAF)
  • American Society of Mammalogists and Raptor Research Foundation
  • USGS Bird Banding Lab, Certified Wildlife Biologist And Master Station Permit Holder

Featured Publications & Products


Research Highlights


Has Climate Affected Tree Species Distribution in New England?

Remeasurement of plots 70 years after establishment on the White Mountain National Forest shows no evidence of changes in elevations among clima ...


LiDAR: A Bird’s-Eye Look at Wildlife Habitat

Wildlife species often prefer habitats with specific characteristics. For example, many birds need dense brushy areas where they can safely nest ...


No Signifigant Losses of Stand Productivity From Whole-tree Harvesting and Clearcutting in New England Forests

Silviculturalists have been concerned over nutrient losses from clearcutting and, more recently, whole-tree harvesting in New England since the ...


Shrubland Birds and Their Habitats

Shrubland birds, such as prairie warblers and field sparrows require constant habitat management, and thus, reliable and specific knowledge to g ...


Silvicultural Guide for Northern Hardwoods in the Northeast Updated

This revision of the 1987 silvicultural guide updates and expands the silvicultural information on northern hardwoods. It provides additional i ...


Last updated on : 09/15/2020