Goals in 1972 included characterization of the soils of the
Oregon IBP reference stands, development of information on the soils
throughout the H. J. Andrews Experimental Forest, and evaluation
of nutrient provision to the major kinds of soils. Field reconnaissance,
soil morphology studies, and sampling were carried out.
Lab analyses...
Although no formal project in mineral cycling was defined for 1972, three modeling efforts were begun: calcium cycling at Cedar River, litter decomposition, and miombo ecosystem. The calcium cycling model is a simple compartment model and was developed as a practice exercise. It demonstrates the inadequacy of linear-donor control formulation...
Research concerning the indigenous slug, ArioZimax coZumbianus G., followed
a three-pronged approach resulting in information on spatial distribution,
population dynamics, and consumer roles. Investigations were carried out
in a high slug density site at Carkeep Park, Cedar River and the laboratory.
Insects represent the most diverse and abundant group of consumers
know. The overall objective of this study was to obtain relative density
estimates of the dominant taxa and identify their primary functions in
order to assist consumer modelling efforts.
Populations of mites and.nematodes were monitored on Watershed 10, H. J.
Andrews Forest. A minimum of 50 families and 60 genera of mites are
present, the majority being Cryptostgmata. Population estimates vary
from 5000-350,000 per square meter. Nine categories of nematodes are
present, most belonging to the saprozoic, dorylaimoid, aquatic...