Autumnal resorption and accretion of trace metals in gallery forest tree. [Quercus macrocarpa, Quercus muehlenbergii, Fraxinus pennsylvanica, Celtis occidentalis, and Ulmus rubra]

Journal Article · Fri Feb 01 00:00:00 EST 1985 · Ecology; (United States)

OSTI ID:5982805

Killingbeck, K T

Autumnal resorption and accretion of copper (Cu), iron (Fe), zinc (Zn), and manganese (Mn) were measured in the foliage of five gallery forest trees species on the Konza Prairie Research Natural Area. Presenescence and postabscission leaves from five trees each of Quercus macrocarpa, Q. muehlenbergii, Fraxinus pennsylvanica, Celtis occidentalis, and Ulmus rubra, were sampled. Three species resorbed 19, 25, and 26%, respectively, of their presenescence foliar Zn, and one species resorbed 35% of its presenescence foliar Fe. This validates the prediction made by others that Zn and Fe are withdrawn from the senescing foliage of at least some deciduous species. Net accretions of Cu (43, 44, 69%), Fe (36, 40%), and Mn (19, 57%) occurred during the same period. The two oak species were responsible for most of the resorption, while the three non-oak species accounted for all of the significant accretions. Such well-defined differences in element conservation may influence interspecific competition by accentuating, or compensating for, species differences in element uptake ability and element use efficiency. Demand:availability ratios proved useful in predicting the likelihood that a given element would be conserved through resorption.

• Research Organization: Univ. of Rhode Island, Kingston
• OSTI ID: 5982805
• Journal Information: Ecology; (United States), Vol. 66:1
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
COPPER
TRANSLOCATION
IRON
MANGANESE
TREES
BIOLOGICAL ACCUMULATION
ZINC
BIOLOGICAL AVAILABILITY
COMPARATIVE EVALUATIONS
ECOLOGY
EXPERIMENTAL DATA
FORESTS
LEAVES
LIFE CYCLE
NUTRIENTS
SEASONAL VARIATIONS
SORPTION
TISSUE DISTRIBUTION
DATA
DISTRIBUTION
ELEMENTS
INFORMATION
METALS
NUMERICAL DATA
PLANTS
TRANSITION ELEMENTS
VARIATIONS
550500* - Metabolism