I am a plant ecologist broadly interested in how organisms interact with their environment. Much of my research is in global change ecology, specifically on plant responses to climate-related disturbances. My research has focused on drought-induced tree mortality - including the physiological process of death from drought and its sensitivity to temperature, tree growth and phenological response to drought, and the ecosystem and earth system consequences of forest disturbance. My research approaches span subdisciplines, including plant physiological ecology, dendroecology, ecosystem ecology, and ecohydrology. I seek to increase understanding of the sensitivities and mechanisms of climate-related ecological responses with an application toward improved prediction of climate change and its effects on the biosphere and earth system.
BIOL 3034 General Ecology. Prerequisite: BIOL 1114, BOT 1404 or BIOL 1604, and MATH 1513 or MATH 1715. An overview of the study of organisms interacting with each other and their environment at individual, population, community, and ecosystem levels of organization. Includes human interaction with ecological systems. Lecture and laboratory Component.
Adams HD, Zeppel MJB, Anderegg WRL, Hartmann H, Landhäusser SM, Tissue DT, Huxman TE, Hudson PJ, Franz TE, Allen CD, Anderegg LDL, Barron-Gafford GA, Beerling DJ, Breshears DD, Brodribb TJ, Bugmann H, Cobb RC, Collins AD, Dickman LT, Duan H, Ewers BE, Galiano L, Galvez DA, Garcia-Forner N, Gaylord ML, Germino AG, Gessler A, Hacke UG, Hakamada R, Hector A, Jenkins MW, Kane JM, Kolb TE, Law DJ, Lewis JD, Limousin J-M, Love DM, Macalady AK, Martinez-Vilalta J, Mencuccini M, Mitchell PJ, Muss JD, O'Brien MJ, O'Grady AP, Pangle RE, Pinkard EA, Piper FI, Plaut JA, Pockman WT, Quirk J, Reinhardt K, Ripullone F, Ryan MG, Sala A, Sevanto S, Sperry JS, Vargas R, Vennetier M, Way DA, Xu C, Yepez EA, McDowell NG. 2017. A multi-species synthesis of physiological mechanisms in drought-induced tree mortality. Nature Ecology and Evolution. doi:10.1038/s41559-017-0248-x.
Smith AMS, Talhelm AF, Johnson DM, Sparks AM, Kolden CA, Yedinak KM, Apostol KG, Tinkham WT, Abatzoglu JT, Lutz JA, Davis AS, Pregitzer KS, Adams HD, Kremens RL. 2017. Impacts of fire radiative energy density doses on Pinus contorta and Larix occidentalis seedling physiology and mortality. International Journal of Wildland Fire 26:82-94.
Grossiord C, Sevanto S, Adams HD, Collins AD, Dickman LT, McBranch N, Michaletz S, Stockton EA, Vigil M, McDowell NG. 2017. Precipitation, not air temperature, drives functional responses of trees in semi-arid ecosystems. Journal of Ecology 105:163-175.
Grossiord C, Sevanto S, Dawson TE, Adams HD, Collins AD, Dickman LT, Newman BD, Stockton EA, McDowell NG. 2017. Warming combined with more extreme precipitation regimes modifies the water sources of trees. New Phytologist 213: 584-596.
Smith AMS, Talhelm AF, Kolden CA, Newingham BA, Adams HD, Cohen JD, Yedinak KM, Kremens RL. 2016. The ability of winter grazing to reduce wildfire size and fire-induced plant mortality was not demonstrated: A comment on Davies et al. 2015. International Journal of Wildland Fire 25: 484-488.
Quentin AG, Pinkard EA, Ryan MG, Tissue DT, Bagget LS, Adams HD, Maillard P, Marchand J, Landhausser SM, et al. 2015. Non-structural carbohydrates in woody plants compared among laboratories. Tree Physiology 35: 1146-1165.
Adams HD, Collins AD, Briggs SP, Vennetier M, Dickman LT, Sevanto SA, Garcia-Forner N, Powers HH, McDowell NG. 2015. Experimental drought and heat can delay development and reduce foliar and shoot growth in semiarid trees. Global Change Biology. doi:10.1111/gcb.13030.
Garcia-Forner N, Adams HD, Sevanto S, Collins AD, Dickman LT, Hudson P, Zeppel MJB, Martìnez-Vilalta J, McDowell NG. 2015. Responses of two semiarid conifer tree species to reduced precipitation and warming reveal new perspectives for stomatal regulation. Plant, Cell, and Environment. doi:10.1111/pce.12588
Villegas JC, Dominguez F, Barron-Gafford GA, Adams HD, Guardiola-Claramonte M, Sommer E, Wiede AL, Rivera IC, Espeleta JF, Zou CB, Breshears DD, Huxman TE. 2015. Sensitivity of regional evapotranspiration partitioning to variation in woody plant cover. Global Ecology and Biogeography.doi:10.1111/geb.12349
Zeppel MJB, Harrison SP, Adams HD, Li G, Kelley DI, West A, Dawson T, Fensham R. Medlyn BR, Palmer A, Tissue DT, McDowell NG. 2015. Drought and resprouting plants. New Phytologist 206:583-589.
Hartmann H, Adams HD, Anderegg WRL, Jansen S, Zeppel MJB. 2015. Research frontiers in drought-induced tree mortality: crossing scales and disciplines. New Phytologist 205:965-969.
Adams HD, Williams AP, Xu C, Rauscher SA, Jiang X, McDowell NG. 2013. Empirical and process-based approaches to climate-induced forest mortality models. Frontiers in Plant Science 4: Article 438.
Breshears DD, Adams HD, Eamus D, McDowell NG, Law DJ, Will RE, Williams AP, Zou CB. 2013. The critical amplifying role of increasing atmospheric moisture demand on tree mortality and associated regional die-off. Frontiers in Plant Science 4: Article 266.
Franz TE, Zreda M, Rosolem R, Hornbuckle BK, Irvin SL, Adams HD, Kolb TE, Zweck C, Shuttleworth WJ. 2013. Ecosystem-scale measurements of biomass water using cosmic ray neutrons. Geophysical Research Letters 40:3929-3933.
Adams HD, Germino MJ, Breshears DD, Barron-Gafford GA, Guardiola-Claramonte M, Zou CB, Huxman TE. 2013. Nonstructural leaf carbohydrate dynamics of Pinus edulis during drought-induced tree mortality reveal role for carbon metabolism in mortality mechanism. New Phytologist197:1142-1151.
Zeppel MJB, Anderegg WRL Adams HD 2013. Forest mortality due to drought: latest insights, evidence and unresolved questions on physiological pathways and consequences of tree death. New Phytologist 197:372-374.