Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Gretchen G. Moisen is active.

Publication


Featured researches published by Gretchen G. Moisen.


Journal of the American Statistical Association | 2007

Model-Assisted Estimation of Forest Resources With Generalized Additive Models

Jean D. Opsomer; F. Jay Breidt; Gretchen G. Moisen; Göran Kauermann

Multiphase surveys are often conducted in forest inventories, with the goal of estimating forested area and tree characteristics over large regions. This article describes how design-based estimation of such quantities, based on information gathered during ground visits of sampled plots, can be made more precise by incorporating auxiliary information available from remote sensing. The relationship between the ground visit measurements and the remote sensing variables is modeled using generalized additive models. Nonparametric estimators for these models are discussed and applied to forest data collected in the mountains of northern Utah. Model-assisted estimators that use the nonparametric regression fits are proposed for these data. The design context of this study is two-phase systematic sampling from a spatial continuum, under which properties of model-assisted estimators are derived. Difficulties with the standard variance estimation approach, which assumes simple random sampling in each phase, are described. An alternative assessment of estimator performance based on a synthetic population is implemented and shows that using the model predictions in a model-assisted survey estimation procedure results in substantial efficiency improvements over current estimation approaches.


Journal of survey statistics and methodology | 2017

Model-Assisted Survey Regression Estimation With The Lasso

Kelly S. McConville; F. Jay Breidt; Thomas C. M. Lee; Gretchen G. Moisen


Archive | 2012

Using FIESTA , an R-based tool for analysts, to look at temporal trends in forest estimates

Tracey S. Frescino; Paul L. Patterson; Elizabeth A. Freeman; Gretchen G. Moisen


In: McWilliams, Will; Roesch, Francis A. eds. 2012. Monitoring Across Borders: 2010 Joint Meeting of the Forest Inventory and Analysis (FIA) Symposium and the Southern Mensurationists. e-Gen. Tech. Rep. SRS-157. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 189-192. | 2012

Repeatability in photo-interpretation of tree canopy cover and its effect on predictive mapping

Thomas A. Jackson; Gretchen G. Moisen; Paul L. Patterson; John Tipton


Archive | 2016

Nevada Photo-Based Inventory Pilot (NPIP) resource estimates (2004-2005)

Tracey S. Frescino; Gretchen G. Moisen; Paul L. Patterson; Elizabeth A. Freeman; James Menlove


Archive | 2015

SHAPESELECTFOREST: A NEW R PACKAGE FOR MODELING LANDSAT TIME SERIES

Xiyue Liao; Gretchen G. Moisen; Elizabeth A. Freeman


Archive | 2015

Forest disturbances trigger erosion controlled fluxes of nitrogen, phosphorus and dissolved carbon

Marek Matyjasik; Gretchen G. Moisen; Todd A. Schroeder; Tracy Frescino; Michael Hernandez


Archive | 2015

Next-generation forest change mapping across the United States: the landscape change monitoring system (LCMS)

Sean P. Healey; Warren B. Cohen; Yang Zhiqiang; Ken Brewer; Evan B. Brooks; Noel Gorelick; Mathew Gregory; Alexander J. Hernandez; Chengquan Huang; Joseph Hughes; Robert E. Kennedy; Thomas R. Loveland; Kevin Megown; Gretchen G. Moisen; Todd A. Schroeder; Brian Schwind; Stephen V. Stehman; Daniel Steinwand; James E. Vogelmann; Curtis E. Woodcock; Limin Yang; Zhe Zhu


Archive | 2015

FIESTA—An R estimation tool for FIA analysts

Tracey S. Frescino; Paul L. Patterson; Gretchen G. Moisen; Elizabeth A. Freeman


Archive | 2015

Integrating field plots, lidar, and landsat time series to provide temporally consistent annual estimates of biomass from 1990 to present

Warren B. Cohen; Hans-Erik Andersen; Sean P. Healey; Gretchen G. Moisen; Todd A. Schroeder; Christopher W. Woodall; Grant M. Domke; Zhiqiang Yang; Robert E. Kennedy; Stephen V. Stehman; Curtis E. Woodcock; Jim Vogelmann; Zhe Zhu; Chengquan Huang

Collaboration


Dive into the Gretchen G. Moisen's collaboration.

Top Co-Authors

Avatar

Todd A. Schroeder

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Paul L. Patterson

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar

Sean P. Healey

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar

Warren B. Cohen

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar

Chris Toney

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar

Jean D. Opsomer

Colorado State University

View shared research outputs
Top Co-Authors

Avatar

Tracey S. Frescino

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar

Xiyue Liao

Colorado State University

View shared research outputs
Top Co-Authors

Avatar

Chengquan Huang

United States Geological Survey

View shared research outputs
Researchain Logo
Decentralizing Knowledge