Jake Weltzin
Executive Director, USA-NPN, School of Natural Resources and the Environment
(520) 626-3821
Ph.D. Renewable Natural Resource Studies and Global Change, University of Arizona, 1998

Jake Weltzin assumed his position as Executive Director of the USA-NPN in August 2007. Jake’s interest in natural history developed as he grew up in Alaska and served as an exchange student in the Australian outback. He obtained his B.S. from Colorado State University, M.S. from Texas A&M University, and Ph.D. from the University of Arizona. Following a post-doctoral fellowship at the University of Notre Dame, Jake went to the University of Tennessee, where he served as Assistant and then Associate Professor.

Jake is interested in how the structure and function of plant communities and ecosystems might respond to global environmental change, including atmospheric chemistry, climate change, and biological invasions. His research spans temperate and tropical grasslands and savannas, temperate woodlands, deciduous forest, and sub-boreal peatlands. His recent experience as a science administrator at the National Science Foundation underscored the need to foster large-scale science initiatives such as the USA-NPN. As its first Executive Director, Jake’s vision for USA-NPN is “to develop a continental-scale instrument for integrative assessment of global change that simultaneously serves as an outreach and educational platform for citizens and educators.”

Selected Citations: 

Ault, T.R., M.D. Schwartz, R. Zurita-Milla, J.F. Weltzin and J.L. Betancourt. 2015. Trends and natural variability of spring onset in the coterminous United States as evaluated by a new gridded dataset of spring indices. Journal of Climate. 

McKinley, D.C., A.J. Miller-Rushing, H.L. Ballard, R.E. Bonney, H. Brown, D.M. Evans, R.A. French, J.K. Parrish, T.B. Phillips, S.F. Ryan, L.A. Shanley, J.L. Shirk, K.F. Stepenuck, J.F. Weltzin, A.Wiggins, O.D. Boyle, R.D. Briggs, S.F. Chapin III, D.A. Hewitt, P.W. Preuss, and M.A. Soukup. 2015. Can investing in citizen science improve natural resource management and environmental protection? Issues in Ecology.

Denny, E.G., K.L. Gerst, A.J. Miller-Rushing, G.L. Tierney, T.M. Crimmins, C.A.F. Enquist, P. Guertin, A.H. Rosemartin, M.D. Schwartz, K.A. Thomas and J.F. Weltzin. 2014. Standardized phenology monitoring methods to track plant and animal activity for science and resource management applications. International Journal of Biometeorology 58:591-601. DOI: 10.1007/s00484-014-0789-5

Rosemartin, A.H., T.M. Crimmins, C.A.F. Enquist, K.L. Gerst, J.L. Kellermann, E.E. Posthumus, E.G. Denny, P. Guertin, L. Marsh and J.F. Weltzin. 2013. Organizing phenological data resources to inform natural resource conservation. Biological Conservation 173:90-97. DOI: 10.1016/j.biocon.2013.07.003

Schwartz, M.D., J.L. Betancourt, and J.F. Weltzin. 2012. From Caprio’s Lilacs to the USA National Phenology Network. Frontiers in Ecology and the Environment 10:324-327. DOI: 10.1890/110281

Jones, K.B., H. Bogena, H. Vereecken, and J.F. Weltzin. 2010. Design and Importance of Multi-tiered Ecological Monitoring Networks. Pages 355-374 in F. Müller et al. (eds.), Long-Term Ecological Research, Springer Science+Business Media B.V. DOI: 10.1007/978-90-481-8782-9_25

Research Themes: 
Adaptation
Agriculture
Arid lands
Borderlands
Climate assessment
Climate change
Dynamics
Extreme events
Fire management
Geography
Human dimensions
Impacts
Land use
Modeling and simulation
Native nations
Natural resource management
Phenology
Range management
Remote sensing
Science communication
Species adaptation
Stakeholder engagement
Water resources
Animal behavior
Arid lands
Conservation biology
Ecosystem disturbances
Ecosystem restoration
Ecosystem services
Fire ecology
Fire management
Geography
Grasslands and savannas
Growth and reproduction
Indigenous knowledge
Invasive species
Land use change
Migration
Natural resource management
Phenology
Plant ecology
Population biology
Rangelands
Remote sensing
Species adaptation
Terrestrial ecology
Urban ecology
Public Health
Air quality
Infectious disease
Science Engagement
Communications
Connecting science and decision making
Urban Environment
Climate change impacts
Community education
Geography
Land use change
Landscape studies
Pest management
Recreation
Remote sensing
Urban infrastructure
Urban planning
Urban tourism
Urban wildlife
Urbanization effects on weather and climate
Water
Climate change impacts

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