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Scientists & Staff

Extracting a northern goshawk from a net.

Mariko Yamasaki

Team Leader / Research Wildlife Biologist
Center for Research on Ecosystem Change
271 Mast Road
Durham, New Hampshire 03824
Phone: 603-868-7659

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

Featured Publications & Products

Publications & Products

National Research Highlights

Shrubland Birds and Their Habitats (2010)
Shrubland birds, such as prairie warblers and field sparrows require constant habitat management, and thus, reliable and specific knowledge to guide management efforts is urgently needed. NRS researchers David King and Mariko Yamasaki have been providing expert advice based on their research for state and federal land managers as well as private individuals, in both formal and informal settings.

Silvicultural Guide for Northern Hardwoods in the Northeast Updated (2014)
This revision of the 1987 silvicultural guide updates and expands the silvicultural information on northern hardwoods. It provides additional information on wildlife habitat and managing mixed-wood and northern hardwood-oak stand.

Last updated on : 10-Sep-2015