General Site Information
Site ID:US-Oho
Site Name:Oak Openings
Tower Team: PI: Jiquan Chen <> - University of Toledo / Michigan State University
FluxContact: Housen Chu <> - University of Toledo / University of California, Berkeley
Affiliate: Asko Noormets <> - Texas A&M University
Elevation (m):230
NetworkAmeriFlux, USCCC
IGBP:DBF (Deciduous Broadleaf Forests)
Climate Koeppen:Dfa (Humid Continental: humid with severe winter, no dry season, hot summer)
Mean Annual Temperature (degrees C):10.1
Mean Annual Precipitation (mm):849
Data Products: AmeriFlux BASE Dataset
FLUXNET2015 Dataset
FLUXNET LaThuile Dataset
Data Availability: AmeriFlux BASE:   10 years (Duration: 2004 - 2013)
FLUXNET2015:   10 years (Duration: 2004 - 2013)
FLUXNET LaThuile:   2 years (Duration: 2004 - 2005)
Data Downloads to Date: AmeriFlux BASE:   245 unique downloads
FLUXNET2015:   395 unique downloads
FLUXNET LaThuile:   221 unique downloads
Data DOIs: AmeriFlux BASE DOI: 10.17190/AMF/1246089
Description:The Ohio Oak Openings site is located within the Oak Openings Preserve Metropark of northwest Ohio, one of the few remaining oak woodlands/savanna/prairie complexes in the Midwest. Declared one of the "One of America's Last Great Places" by the Nature Conservancy the area consists of four main vegetation types: Oak Woodlands, Oak Savanna, Floodplain Forests and Wet Prairies. The stand surrounding the tower is mainly Oak Woodlands dominated by red, white and black oaks with a relatively abundant population of red maples indicating high soil moisture retention and a history of limited fire disturbances. Most of the area was cleared for agriculture at the time of Euro-American settlements in the mid to late-19th century. A large fraction of the cleared land was later abandoned due to the poor sandy soils. These areas reverted to Oak Savannas and in cases where fire was limited progressively made the transition to Oak Woodlands. Today patches of the forest are burned every few years as part of prescribed burning cycle to control stand density.
Acknowledgments:USDA FS Southern Global Change Program (cooperative agreements 03-CA-11330147-073 and 04-CA-11330147-238)
Site image(s):
For additional AmeriFlux site images, see the Web site gallery

Publications relevant to understanding the site
DeForest, J.L., A. Noormets, G. Tenney, G. Sun, S.G. McNulty and J. Chen 2006. Phenophases in an oak-dominated forest alter the soil respiration-temperature relationship. International Journal of Biometeorology. 51:135-144. Reference
Noormets, A, McNulty, SG, DeForest, JL, Sun, G, Li, Q, Chen, J. 2008. Drought during canopy development has lasting effect on annual carbon balance in a deciduous temperate forest. New Phytologist 179: 818-828. Primary_Citation
Ouyang, Z., Chen, J., Becker, R., Chu, H., Xie, J., Shao, C., John. R.. 2014. Disentangling the confounding effects of PAR and air temperature on net ecosystem exchange at multiple time scales Ecological Complexity. 19: 46-58 Reference
Xie, J., Chen, J., Sun, G., Chu, H., Noormets, A., Ouyang, Z. , John, R., Wan, S., Guan, W. 2014. Long-term variability and environmental control of the carbon cycle in an oak-dominated temperate forest. Forest Ecology and Management 313(1): 319-328 Alt_Citation
Xie, J., Sun, Ge., Chu, H., Liu, J., McNulty, S. G., Noormets, A., John, R., Ouyang, Z., Zha, T, Li, H., Guan, W., Chen, J. 2014. Long‐term variability in the water budget and its controls in an oak‐dominated temperate forest. Hydrological Processes. 28(25): 6054-6066 Alt_Citation

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