Showing 1 - 20 results of 76 for search '"Harvard Forest"', query time: 1.66s Refine Results
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    Influence of Varying Solar Zenith Angles on Land Surface Phenology Derived from Vegetation Indices: A Case Study in the Harvard Forest by Yang Li, Ziti Jiao, Kaiguang Zhao, Yadong Dong, Yuyu Zhou, Yelu Zeng, Haiqing Xu, Xiaoning Zhang, Tongxi Hu, Lei Cui

    Published 2021-10-01
    “…To examine the SZA effect on LSP, the MODIS bidirectional reflectance distribution function (BRDF) product and a BRDF model were employed to derive LSPs under several constant SZAs (i.e., 0°, 15°, 30°, 45°, and 60°) in the Harvard Forest, Massachusetts, USA. The LSPs derived under varying SZAs from the MODIS nadir BRDF-adjusted reflectance (NBAR) and MODIS vegetation index products were used as baselines. …”
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    Calibrating abundance indices with population size estimators of red back salamanders (Plethodon cinereus) in a New England forest by Ahmed A. Siddig, Aaron M. Ellison, Scott Jackson

    Published 2015-05-01
    “…We conclude that when calibrated and used appropriately, some abundance indices may provide cost-effective and reliable measures of P. cinereus abundance that could be used in conservation assessments and long-term monitoring at Harvard Forest and other northeastern USA forests.…”
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    Tree-ring δ 13C tracks flux tower ecosystem productivity estimates in a NE temperate forest by Soumaya Belmecheri, R Stockton Maxwell, Alan H Taylor, Kenneth J Davis, Katherine H Freeman, William J Munger

    Published 2014-01-01
    “…We investigated relationships between tree-ring δ ^13 C and growth, and flux tower estimates of gross primary productivity (GPP) at Harvard Forest from 1992 to 2010. Seasonal variations of derived photosynthetic isotope discrimination ( Δ ^13 C) and leaf intercellular CO _2 concentration ( c _i ) showed significant increasing trends for the dominant deciduous and coniferous species. …”
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