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- This material is based upon work supported by the H.J. Andrews Experimental Forest and Long Term Ecological Research (LTER) program under the NSF grant LTER8 DEB-2025755.1
- This research has been supported in part by the National Science Foundation under Contract No. CCR-89-02496.1
- This work was supported in part by NSF grant number IRl-86-57316 (Presidential Young Investigator Award) .1
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