Predawn Leaf Water Potential of Oak-Hickory Forest at Missouri Ozark (MOFLUX) Site: 2004-2020

Dataset · Mon Mar 12 04:00:00 EDT 2018

DOI:https://doi.org/10.3334/CDIAC/ORNLSFA.004· OSTI ID:1389510

Pallardy, Stephen G. ^[1]; Gu, Lianhong ^[2]; Wood, Jeffrey D. ^[1]; Hosman, Kevin P. ^[1]; Sun, Ying ^[3]

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1. Univ. of Missouri, Columbia, MO (United States)
2. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
3. Cornell Univ., Ithaca, NY (United States)

Measurements of predawn leaf water potential (PLWP) have been made at weekly to biweekly intervals during the 2004 to 2021 growing seasons of the second-growth upland oak-hickory forests at the Missouri Ozark AmeriFlux (MOFLUX) site. The MOFLUX site is located in the University of Missouri Baskett Wildlife Research area (BWREA), situated in the Ozark Border Region of central Missouri, USA. In each year, except for 2004, the first measurements occurred in mid-May. In all years, the last measurements took place in late October. Leaf samples were collected weekly or biweekly before dawn from canopy and sapling individuals of the common tree species at the site. A total of 20–21 samples were obtained each day with 6–7 taken from white oak (Quercus alba L.), and the rest, with at least two samples per species, distributed among black oak (Q. velutina Lam.), sugar maple (Acer saccharum Marsh.), shagbark hickory (Carya ovata (Mill.) K. Koch), white ash (Fraxinus americana L.), and eastern redcedar (Juniperus virginiana L.), roughly in proportion to their relative stem abundance in the stand. Using these decade-long continuous observations of tree mortality and predawn leaf water potential at the MOFLUX site provide insight in how the mortality of important tree species vary and how such variations may be predicted. More recent data will be added periodically with no changes to previously released data or the format and structure of the data file. This dataset contains one data file in comma separate (.csv) format. Additional metadata are provided: one data dictionary and a file-level metadata file in comma separate (.csv) format and a user guide in PDF (*.pdf) format.

• Research Organization: ORNLTESSFA (Oak Ridge National Lab's Terrestrial Ecosystem Science Scientific Focus Area (ORNL TES SFA))
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23). Climate and Environmental Sciences Division
• Contributing Organization: Oak Ridge National Laboratory, TES SFA
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1389510
• Report Number(s): ornlsfa.004
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
predawn leaf water dynamics
white oak
sugar maple
hickory
white ash
eastern redcedar
Missouri Ozark AmeriFlux
University of Missouri Baskett Wildlife Research area (BWREA)