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Filtering by: Academic Affiliation College of Forestry Remove constraint Academic Affiliation: College of Forestry Creator Temesgen, Hailemariam Remove constraint Creator: Temesgen, Hailemariam Language English [eng] Remove constraint Language: English [eng] Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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Regeneration imputation models for complex stands of southeastern British Columbia

Creator:

Hassani, Badre T., LeMay, Valerie, Marshall, Peter L., Temesgen, Hailemariam, and Zumrawi, Abdel-Azim

Abstract:

Two imputation techniques for predicting natural regeneration in complex stands prevalent in southeastern British Columbia (BC) were compared using data from the Interior Cedar-Hemlock moist warm subzone variant 2 (ICHmw2) in the vicinity of Nelson, BC. Imputation approaches offer advantages over other modeling approaches in that they provide estimates of...

Resource Type:

Article
Tree crown ratio models for multi-species and multi-layered stands of southeastern British Columbia

Creator:

Temesgen, Hailemariam, LeMay, Valerie, and Mitchell, Stephen J.

Abstract:

The ratio of live crown length to tree height (crown ratio; CR) is often used as an important predictor variable for tree level growth equations, particularly for multi-species and multi-layered stands. Also, CR indicates tree vigour and can be an important habitat variable. Measurement of CR for each tree can...

Resource Type:

Article
Connecting Inventory Information Sources for Landscape Level Analyses

Creator:

Lemay, Valerie and Temesgen, Hailemariam

Abstract:

In forest landscape level analyses, forest information is commonly represented by separate polygons, defined by differences in species composition, stand structure, crown closure, and productivity. The simplest approach to projecting yield of stands over the land base is to create an aggregated yield table, weighted by area of each stand...

Resource Type:

Article
Forest Measurement and Biometrics in Forest Management: Status and Future Needs of the Pacific Northwest USA

Creator:

Temesgen, Hailemariam, Goerndt, Michael E., Johnson, Greg P., Adams, Darius M., and Monserud, Robert A.

Abstract:

Forest measurement and biometrics (FMB) programs have been at the heart of forestry education in North America since its beginnings at the Biltmore Forest School more than 100 years ago. Over the intervening period, the field of forestry has changed in critical ways. There are many forest management and policy...

Resource Type:

Article
Regional Height-Diameter Equations for Maior Tree Species of Southwest Oregon

Creator:

Temesgen, Hailemariam, Hann, David W., and Monleon, Vincente J.

Abstract:

Selected tree height and diameter functions were evaluated for their predictive abilities for major tree species of southwest Oregon. Two sets of equations were evaluated. The first set included four base equations for estimating height as a function of individual tree diameter, and the remaining 16 equations enhanced the four...

Resource Type:

Article
Estimating Cavity Tree Abundance Using Nearest Neighbor Imputation Methods for Western Oregon and Washington Forests

Creator:

Temesgen, Hailemariam, Barrett, Tara M., and Latta, Greg

Abstract:

Cavity trees contribute to diverse forest structure and wildlife habitat. For a given stand, the size and density of cavity trees indicate its diversity, complexity, and suitability for wildlife habitat. Size and density of cavity trees vary with stand age, density, and structure. Using Forest Inventory and Analysis (FIA) data...

Resource Type:

Article
Estimating cavity tree and snag abundance using negative binomial regression models and nearest neighbor imputation methods

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
Mapping and imputing potential productivity of Pacific Northwest forests using climate variables

Creator:

Latta, Gregory, Temesgen, Hailemariam, and Barrett, Tara M.

Abstract:

Regional estimation of potential forest productivity is important to diverse applications, including biofuels supply, carbon sequestration, and projections of forest growth. Using PRISM (Parameter-elevation Regressions on Independent Slopes Model) climate and productivity data measured on a grid of 3356 Forest Inventory and Analysis plots in Oregon and Washington, we evaluated...

Resource Type:

Article
Effects of height imputation strategies on stand volume estimation

Creator:

Garber, Sean M., Temesgen, Hailemariam, Monleon, Vicente J., and Harm, David W.

Abstract:

Subsampling and subsequent imputation of tree heights can improve the predictive performance of stand volume estimation but may also introduce biases. Using coastal Douglas-fir data from southwest Oregon, USA, the predictive performance of several height imputation strategies for estimating stand volume was evaluated. A subsample of 1-15 trees was randomly...

Resource Type:

Article
Imputing Mean Annual Change to Estimate Current Forest Attributes

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...

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Academic Affiliation

College of Forestry[remove]28

Creator

Temesgen, Hailemariam[remove]28
Barrett, Tara M.7
Eskelson, Bianca N.I.7
Lemay, Valerie4
Adams, Darius M.3
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2010-201915
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English [eng][remove]28

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Yes7

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Article28

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Copyright Not Evaluated[remove]28

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