Index Catalog // ScholarsArchive@OSU

Creator:: Barrett, Tara M., Latta, Greg, Hennon, Paul E., Eskelson, Bianca N.I., and Temesgen, Hailemariam
Abstract:: Dwarf mistletoes (Arceuthobium species) influence many processes within forested ecosystems, but few studies have examined their distribution in relation to climate. An analysis of 1549 forested plots within a 14.5 million ha region of southeast Alaska provided strong indications that climate currently limits hemlock dwarf mistletoe (Arceuthobium tsugense (Rosendahl) G.N....
Resource Type:: Article

Creator:: Barrett, Tara M., Latta, Greg, Hennon, Paul E., Eskelson, Bianca N.I., and Temesgen, Hailemariam
Abstract:: Dwarf mistletoes (Arceuthobium species) influence many processes within forested ecosystems, but few studies have examined their distribution in relation to climate. An analysis of 1549 forested plots within a 14.5 million ha region of southeast Alaska provided strong indications that climate currently limits hemlock dwarf mistletoe (Arceuthobium tsugense (Rosendahl) G.N....
Resource Type:: Article

Creator:: Eskelson, Bianca N.I., Madsen, Lisa, Hagar, Joan C., and Temesgen, Hailemariam
Abstract:: Understory vegetation communities are critical components of forest ecosystems. As a result, the importance of modeling understory vegetation characteristics in forested landscapes has become more apparent. Abundance measures such as shrub cover are bounded between 0 and 1, exhibit heteroscedastic error variance, and are often subject to spatial dependence. These...
Resource Type:: Article

Creator:: Eskelson, Bianca N.I., Anderson, Paul D., Hagar, Joan C., and Temesgen, Hailemariam
Abstract:: Les modèles de prédiction du microclimat pour différentes conditions de station dans les zones riveraines boisées des cours d’eau de tête de bassin sont peu développés et les procédures d’échantillonnage pour caractériser les gradients sous-jacents du microclimat riverain sont rares. Nous avons utilisé des données de microclimat riverain collectées le...
Resource Type:: Article

Creator:: Eskelson, Bianca N.I., Temesgen, Hailemariam, and Barrett, Tara M.
Abstract:: Information on current forest condition is essential to assess and characterize resources and to support resource management and policy decisions. The 1998 Farm Bill mandates the US Forest Service to conduct annual inventories to provide annual updates of each state's forest. In annual inventories, the sample size of I year...
Resource Type:: Article

Creator:: Eskelson, Bianca N.I., Temesgen, Hailemariam, and Barrett, Tara M.
Abstract:: Cavity tree and snag abundance data are highly variable and contain many zero observations. We predict cavity tree and snag abundance from variables that are readily available from forest cover maps or remotely sensed data using negative binomial (NB), zero-inflated NB, and zero-altered NB (ZANB) regression models as well as...
Resource Type:: Article

Creator:: Eskelson, Bianca N.I., Temesgen, Hailemariam, Lemay, Valerie, Barrett, Tara M., Crookston, Nicholas L., and Hudak, Andrew T.
Abstract:: Almost universally, forest inventory and monitoring databases are incomplete, ranging from missing data for only a few records and a few variables, common for small land areas, to missing data for many observations and many variables, common for large land areas. For a wide variety of applications, nearest neighbor (NN)...
Resource Type:: Article

Creator:: Eskelson, Bianca N.I., Barrett, Tara M., and Temesgen, Hailemariam
Abstract:: When a temporal trend in forest conditions is present, standard estimates from paneled forest inventories can be biased. Thus methods that use more recent remote sensing data to improve estimates are desired. Paneled inventory data from national forests in Oregon and Washington, U.S.A., were used to explore three nearest neighbor...
Resource Type:: Article

ScholarsArchive@OSU