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John DeLay

Posted: November 14, 2022

Position, Department

Associate Professor, Geography and Environment

Contact Information

Email address: delay@hawaii.edu

Phone: 808-845-9419

Courses Taught

BOT/HWST 105: Hawaiian Plants and Their Uses, GEO 101: The Natural Environment, GEO 101L The Natural Environment Laboratory, GEO 102: World Regional Geography, GEO 122 Geography of Hawai’i

Research

My research focuses on the ecohydrology of tropical montane cloud forest in Hawai’i.

DeLay J., Tseng H., Giambelluca T., Nullet, M., Nicolow J., Rodrigues K. (2020), Slope Environmental Lapse Rates and Fog on O?ahu’s Highest Mountain [B122-01] presented at 2020 AGU Fall Meeting, 1-17 Dec.

Tseng, H., Giambelluca, T. W., Small Griswold, J. D., Freitag, S., Howell, S. G., Nugent, A., Beilman, D. W., Winchester, C., DeLay, J. K. (2018, December). Testing alternative ground-based cloud liquid water content measurement methods for estimating cloud water interception in tropical montane cloud forests. In AGU Fall Meeting Abstracts (Vol. 2018, pp. H43B-30).

Tseng, H., Giambelluca, T. W., DeLay, J., & Nullet, M. (2017, December). Cloud water interception and canopy water balance in the Hawaiian Islands: preliminary results and emerging patterns. In AGU Fall Meeting Abstracts (Vol. 2017, pp. H11D-1212).

Guidry, M., Eschenberg, A., McCoy, F. W., McManus, M. A., Lee, K., DeLay, J. K., … & Krupp, D. (2017, December). Creating and maintaining a successful geoscience pathway from 2YC to 4YC for Native Hawaiian Students: First Steps. In AGU Fall Meeting Abstracts (Vol. 2017, pp. ED22B-08).

Lu, P. L. and DeLay, J. K. 2016. Vegetation and fire in lowland dry forest at Wa’ahila Ridge on O’ahu, Hawai’i. PhytoKeys, 68, 51-64.

Giambelluca, T. W., Mudd, R. G., Huang, M., Miyazawa, Y., Nullet, M., DeLay, J. K., … & Litton, C. M. (2015, December). Invasive non-native trees in Hawaiian forests could increase negative impacts of climate change on water resources. In AGU Fall Meeting Abstracts (Vol. 2015, pp. H24B-04).

DeLay, J.K., and Giambelluca, T.W. 2011. History of cloud water interception research in Hawai‘i. In Bruijnzeel, L.A., Scatena F.N., and Bubb, P. (eds.) Mountains in the Mist: Science for Conserving and Managing Tropical Montane Cloud Forests. Cambridge University Press: 740 pp.

Giambelluca, T.W., DeLay, J.K., Nullet, M.A., Scholl, M.A., and Gingerich, S.B. 2011. Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai‘i. In Bruijnzeel, L.A., Scatena F.N., and Bubb, P. (eds.) Mountains in the Mist: Science for Conserving and Managing Tropical Montane Cloud Forests. Cambridge University Press: 740 pp.

Giambelluca, T.W., DeLay, J.K., Nullet, M.A., Scholl, M.A., and Gingerich, S.B. 2011. Canopy water balance of windward and leeward cloud forests on Haleakal?, Maui, Hawai‘i. Hydrological Processes, 25: 438-447

Juvik, J.O., DeLay, J.K., Kinney, K.M., and Hansen, E.W. 2011. A 50th anniversary of the seminal ‘L?na‘i fog drip study’ in Hawai‘i. Hydrological Processes. 25: 402-410

Takahashi, M. Giambelluca, T., Mudd, R., DeLay, J., Nullet, M., Asner, G. 2011. Rainfall partitioning and cloud water interception in native forest and invaded forest in Hawai‘i Volcanoes National Park. Hydrological Processes. 25: 448-464

Giambelluca, T.W., Martin, R.E., Asner, G.P., Huang, M., Mudd, R.G., Nullet, M.A., DeLay, J.K., and Foote, D. 2009. Evapotranspiration and energy balance of wet montane cloud forest in Hawai‘i. Agricultural and Forest Meteorology. 149, 2: 230-243

Juvik, J.O., DeLay, J., M. Merlin, M. Castillo, and L. Perry. 2008. Endangered Plants and Threatened Ecosystems on the Island of Hawai‘i. Petroglyph Press: 64 pp.

Juvik, J., DeLay J., Tango L. 2008. Climatological and Hydrological Field Monitoring. In Mueller-Dombois, D. Bridges, K. W., and C. C. Daehler, eds. Biodiversity Assessment of Tropical Island Ecosystems: PABITRA Manual for Interactive Ecology and Management. Bishop Museum Press, 255 pp.

Wester, L., DeLay J., Hoang, L., Iida B., Kalodimos, N., Wong, T. 2006. Population dynamics of Marsilea villosa on O‘ahu, Hawai‘i. Pacific Science. 60, 3: 385-402

DeLay, J., M. Merlin, J. Juvik, M. Castillo, and L. Perry. 2004. Rare and unusual plants on the island of Hawai‘i. Hilo Bay Printers: 32 pp.

Service

2020-2021: Campus Sustainability Co-Coordinator, Sustainability Committee (Strategic Plan, Charter, Website, Showcase, and Events Subcommittees), System Sustainability Curriculum Council, University College Division Personnel Committee (Chair), Assessment Committee (Humanities and Social Sciences Liaison), Halau ola Honua NSF PAGE Grant Co-PI, Service to the State of Hawai’i Department of Land and Natural Resources and the Army Natural Resource Program through site maintenance and data collection on Mt. Ka’ala.

Professional Activities

American Meteorological Society (Member), American Geophysical Union (Member), University of Hawaii at Manoa Ecohydrology Lab (Member), Mt. Ka’ala Meteorological Site Coordinator

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