Foliage, Leaf Litter, Stemflow and Throughfall W101 1975
TITLE
Foliage, Leaf Litter, Stemflow and Throughfall W101 1975
PRINCIPAL INVESTIGATOR(s)
Douglas F. Ryan
Morris Arboretum
9414 Meadowbrook Ave.
Philadelphia, PA 19118
USA

Phone: (215)-247-5777
KEYWORD SET:
vegetation, leaf, foliage, litter, stemflow, throughfall, watershed 101, ws101.
BEGIN DATE
1975
END DATE
1975
LOCATION
Watershed 101
West bounding coordinate: -71.742196
East bounding coordinate: -71.736230
North bounding coordinate: 43.939933
South bounding coordinate: 43.935853
LOCATION DESCRIPTION
W101 Grid locations 3E2, 2, 5E2, 18, 7, 20, 12, 11W2 had 3 clip plots, litter traps, and throughfall collectors places at each. Locations referred to as A1, A2, B1, B2, C1, C2, D1, D2, respectively in plot designations. Stemflow collected at 3E2.
SAMPLING DESIGN
Objective was to measure foliar nutrient contents before and after autumn leaf senescence and foliar leaching during senescence to estimate resorption from senescing leaves. Leaves were clipped on 24 1x1m plots in August, leaf litter collected from 12 pin cherry trees in various DBH classes.
LABORATORY PROCEDURES
Leaves digested in concentrated H2SO4 and H202. Cations analyzed by atomic absorption spectrophotometry, nitrogen with Nesslers reagent and phosphorus with molybdovanadate reagent. Throughfall and stemflow samples composited before analysis.
REFERENCES
  • Ryan, D.F. 1979. Nutrient resorption for senescing leaves: a mechanism of biogeochemical cycling in a northern hardwood forest ecosystem. PhD, Yale University.
  • Meyer, J.L. 1980. Dynamics of phosphorus and organic matter during leaf decomposition in a forest stream. Oikos 34:44-53.
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USA

Phone: (603)-868-7643
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