Juliet C. Stromberg
Julie Stromberg received her Ph.D. at ASU, and was an associate research professor at ASU's Center for Environmental Studies. She serves on the editorial board of Wetlands and is a member of the Southwestern Willow Flycatcher Endangered Species Recovery Team.
I am a plant ecologist who specializes in riparian ecosystems. Much of my research focuses on relationships between stream and ground water hydrology and riparian ecosystems, and on effects of ecosystem disturbance (floods and fire) on riparian plant populations, communities, and landscapes. Some studies are conducted at reference sites where human influence is minimal, others are carried out at hydrologically altered sites or at sites undergoing restoration. By understanding pattern and process in riparian ecosystems, I provide resource managers with information that can inform conservation and restoration efforts.
Goals of previous and ongoing studies have included:
- Determining the effects of natural and altered flow regimes on riparian plant populations, communities, and landscapes
- Understanding how flood and fire disturbance influence ecosystem structure and function
- Understanding the biological and physical processes that influence plant species diversity in riparian ecosystems
- Understanding the ecological factors that drive shifts in plant species composition, including shifts towards increased abundance of 'invasive' species such as Tamarix
- Identifying hydrologic thresholds for maintaining riparian plant species and associations, and determining environmental flow needs
- Determining whether riparian legacies persist along dewatered rivers, by assessing soil seed banks
- Obtaining the ecological information needed to implement successful riparian restoration projects
- Developing riparian ecosystem assessment protocols
Most of the research in my lab focuses on riparian ecosystems in arid and semiarid regions. Vegetation types we have investigated include Sonoran riparian forests ( Populus fremontii, Salix gooddingii, Prosopis velutina ), riparian grasslands ( Sporobolus spp.), warm-temperate mixed broadleaf forests ( Platanus wrightii, Juglans major ), and riverine marshlands.
Selected Publications
Baird K, J Stromberg, and T Maddock. 2005. Linking riparian dynamics and groundwater: An eco-hydrologic approach to modeling groundwater and riparian vegetation. Environmental Management 36:551-564.
Lite, SJ, KJ Bagstad and JC Stromberg. 2005. Riparian plant species richness along lateral and longitudinal gradients of water stress and flood disturbance, San Pedro River, Arizona, USA. Journal of Arid Environments 63(4): 785-813.
Lite SJ and JC Stromberg. 2005. Surface water and ground-water thresholds for maintaining Populus - Salix forests, San Pedro River, Arizona. Biological Conservation 125: 153-167.
Stromberg JC, KJ Bagstad, JM Leenhouts, SJ Lite, E Makings. 2005. Effects of stream flow intermittency on riparian vegetation of a semiarid region river (San Pedro River, Arizona). River Research and Applications 21:925-938.
Bagstad KJ, JC Stromberg and SJ Lite. 2005. Response of herbaceous riparian plants to rain and flooding on the San Pedro River, Arizona, USA. Wetlands 25:210-223.
Richter R and JC Stromberg. 2005. Soil seed banks of two montane riparian areas: Implications for restoration. Biodiversity and Conservation 14: 993-1016.
Stromberg, J., M Briggs, M Scott, and P Shafroth. (2004). Riparian ecosystem assessments. Pages 314-329 in M Baker Jr., P Ffolliott, L DeBano, and DG Neary, editors, Ecology and Management of Riparian Areas in the Southwestern United States : Hydrology, Ecology and Management, Lewis Publishers.
Stromberg, J, M Briggs, C Gourley, M Scott, P Shafroth, and L Stevens. (2004). Human alterations of riparian ecosystems. Pages 101-126 in M Baker Jr., P Ffolliott, L DeBano, and DG Neary, editors, Riparian Areas of the Southwestern United States : Hydrology, Ecology and Management, Lewis Publishers.
Graf, WL, J Stromberg and B Valentine. (2002). Rivers, dams, and willow flycatchers: A summary of their science and policy connections. Geomorphology 47:169-188.
Stromberg, JC and MK Chew. (2002). Flood pulses and restoration of riparian vegetation in the American Southwest. Pages 11-49 in B. Middleton, Editor, Flood Pulsing and Wetland Restoration in North America . John Wiley and Sons.
Stromberg, JD and MK Chew. (2002). Foreign visitors in riparian corridors of the American Southwest: is xenophytophobia justified? Pages 195-219, in B. Tellman, Editor, Invasive Exotic Species int he Sonoran Region. University of Arizona Press.
Stromberg, JC. (2002). Flood flows and population dynamics of Arizona sycamore ( Platanus wrightii ). Western North American Naturalist 62:170-187.
Shafroth, PB, JC Stromberg, and DT Patten. (2002). Riparian vegetation response to altered disturbance and stress regimes. Ecological Applications 12:107-123.
Drezner, T, P Fall, and JC Stromberg. (2001). Plant distribution and dispersal mechanisms at the Hassayampa River Preserve , Arizona , USA . Global Ecology and Biogeography 10:149-162.
Stromberg, JC. (2001). Influence of stream flow regime and temperature on growth rate of the riparian tree, Platanus wrightii , in Arizona . Freshwater Biology 46:227-240.
Springer, AE, JM Wright, PB Shafroth, JC Stromberg, and DT Patten. (1999). Coupling ground-water and riparian vegetation models to simulate riparian vegetation changes due to a reservoir release. Water Resources Research 35:3621-3630.
Stomberg, JC. (1998). Dynamics of Fremont cottonwood ( Populus fremontii ) and saltcedar ( Tamarix chinensis ) populations along the San Pedro River, Arizona. Journal of Arid Environments 40:133-155.
Poff, NL, JD Allan, MB Bain, JR Karr, KL Prestegaard, BD Richter, and JC Stromberg. (1997). The natural flow regime: A paradigm for river conservation and restoration. BioScience 47:769-784.
Stromberg, JC, J Fry, and DT Patten. (1997). Marsh development after large floods in an alluvial, arid-land river. Wetlands 17:292-300.
Stromberg, JC, R Tiller, and B Richter. (1996). Effects of groundwater decline on riparian vegetation of semiarid region: The San Pedro River, Arizona. Ecological Applications 6:113-131.