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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Photo of Richard Mackenzie

Richard A. Mackenzie

Research Ecologist
60 Nowelo Street
United States

Phone: 808-933-8121 x116
Contact Richard A. Mackenzie

Current Research

Impacts of invasive species, climate change, and disturbance on ecological function of Pacific Island streams, coastal wetlands and mangroves; ecology and community dynamics of fish and invertebrates in streams, coastal wetlands, and mangroves; quantifying ecosystems services of mangrove forests.

Video / Multimedia

  • Climate Change and Native Hawaiian Shrimp

    The life cycle of native Hawaiian shrimp depends heavily on stream flow to carry them out to sea. A warmer, drier climate means less water in the streams, which could jeopardize their viability. In this video, PSW research ecologist Dr. Rich MacKenzie talks about his research on the shrimp and what they tell us about the surrounding ecosystem. [length: 5:13]

  • Habitat Value of Mangroves for Fish in Micronesia Habitat Value of Mangroves for Fish in Micronesia

    Discussing the Kosrae and Yap islands of Micronesia [length: 22:27]


  • University of Wisconsin at Milwaukee, Ph.D. Invertebrate Zoology, Biogeochemistry minor 2001
  • University of Wisconsin at Eau Claire, B.S. Zoology 1993

Featured Publications & Products


Research Highlights


Impacts of Cimate Change on Pacific Island Streams

Forest Service scientists studied how various ecological and hydrological functions responded to changes in rainfall. Streamflow and metrics all ...


Keeping Out Exotic Fish Improves Endangered Hawaiian Waterbird Habitat

Exotic tilapia and mosquito fish are found in aquatic ecosystems throughout the Hawaiian Islands where they degrade native fish and waterbird ha ...


Last updated on : 07/01/2021