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    Author(s): Amy J. Scherzer; Robert P. LongJoanne Rebbeck
    Date: 2003
    Source: In: Sutherland, Elaine K.; Hutchinson, Todd F., eds. Characteristics of mixed oak forest ecosystems in southern Ohio prior to the reintroduction of fire. Gen. Tech. Rep. NE-299. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 113-121
    Publication Series: General Technical Report (GTR)
    Station: Northeastern Research Station
    PDF: View PDF  (90.97 KB)

    Description

    Early autumn foliar nutrient concentrations of overstory oak (white oak [Quercus alba L.] or chestnut oak [Q. prinus L.]) understory hickory (mockernut hickory [Carya tomentosa (Poir.) Nutt.] or pignut hickory [C. glabra (Mill.) Sweet]), and both overstory and understory red maple (Acer rubrum L.) were analyzed in relation to Integrated Moisture Index (IMI) classes. Foliar nutrient concentrations varied among the three species groups, emphasizing that differential uptake and utilization of nutrients is species dependent. Concentrations in late summer were within the range reported for these species for all nutrients except nitrogen (N). Concentrations of N were below the presumed normal range for oaks and hickory, likely due to the late sampling date. Leaves were collected in late September just as autumn coloration was beginning, indicating that retranslocation was occurring. Foliar nutrient concentrations in red maple did not differ between the Watch Rock and Arch Rock study areas, between designated treatment units (control and frequent burn), or between understory and overstory trees. Differences in concentrations between IMI classes were limited to the oaks and hickories. In hickory, foliar P and Mg increased significantly from the xeric to intermediate sites. However foliar P in oak was greatest in intermediate plots and lowest in mesic plots. These limited differences in concentrations between IMI classes did not always reflect differences in A-horizon soil chemistry [TIN (total inorganic nitrogen), PO4, Ca, Mg, Al] indicating that factors in addition to soil concentrations play a role in nutrient uptake.

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    Citation

    Scherzer, Amy J.; Long, Robert P.; Rebbeck, Joanne. 2003. Foliar nutrient concentrations of oak, hickory, and red maple. In: Sutherland, Elaine K.; Hutchinson, Todd F., eds. Characteristics of mixed oak forest ecosystems in southern Ohio prior to the reintroduction of fire. Gen. Tech. Rep. NE-299. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 113-121

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