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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Christian Giardina in Laupahoehoe

Christian P. Giardina

Research Ecologist
60 Nowelo Street
United States

Phone: 808-854-2619
Fax: 808-933-8120
Contact Christian P. Giardina

Research Interests

My current research interests include: understanding how drought impacts fire regimes, forest hydrology and watershed health; the restoration of composition, structure, function and dynamics of forest ecosystems, especially in  landscapes degraded by the interactions of fire, drought and invasive species; and community based solutions to managing threats to forests and restoring landscapes.

Why This Research is Important

This research is important because countless native species and human communities rely on forests for goods and services, and with changes to these systems due to fire, drought or invasive species, the capacity of these systems to meet the needs of nature and society are compromised. By understanding these systems, the impact of threats like fire, drought and invasive species, and how to manage them for multiple benefits to species and society, we can enhance the ecological health of these systems and the well-being of those communities dependent on these systems.

Professional Organizations

  • USDA Climate Hub, Southwest Region, Co-Director (2018 - Current)
  • University of Hawaii at Manoa - Natural Resources and Envirnomental Management, Adjunct Faculty (2007 - Current)
  • Hawaii Conservation Alliance, Usda Forest Service Representative (2006 - Current)


Citations of non US Forest Service Publications

  • Wood, Tana E.; Cavaleri, Molly A.; Giardina, Christian P.; Khan, Shafkat, Mohan, Jacqueline E.; Nottingham, Andrew T; Reed, Sasha C.; Slot, Martijn. 2019. Chapter 14: Soil warming effects on tropical forests with highly weathered soils. In J. E. Mohan (Ed.), Ecosystem consequences of soil warming: microbes, vegetation, fauna and soil biogeochemistry. London : Elsevier, Academic Press: 385-439



Research Highlights


Ecosystem carbon storage and productivity across the Hawaiian Islands

Hawaii provides a model system for understanding the effects of environment on ecosystem carbon storage and flux. Forest Service scientists exam ...


Effects of Rising Temperature on Carbon Cycling and Storage in Ecosystems

Scientists find that as ecosystems warm, they store more carbon, not less


Hawai’i Carbon Assessment

Scientists conduct an assessment of current and projected future carbon stocks showing the fluxes and sequestration for the state of Hawai’i.


Interactive Effects of Climate Change and Invasive Species on Water Yield in Tropical Montane Forests

Forest Service scientists quantify the impact of anticipated climate change and invasive species on water yield from streams using the Distribut ...


Long-term Fragmentation Reduces Ecosystem Carbon Storage and Productivity

In the naturally fragmented tropical montane landscape in Hawaii, Forest Service researchers used a highly replicated (more than 600) set of fra ...


Long-term warming increases ecosystem nitrogen cycling

In a model ecosystem study where mean annual temperature (MAT) increases with elevation but where many factors such as soils, soil moisture, and ...


Soil Carbon Storage in Tropical Montane Forests is Insensitive to Warming

Soils contain more carbon than the atmosphere and all plant biomass combined. There is fear that warming will greatly increase the net release o ...


Last updated on : 10/28/2021