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Dive into the research topics where Fred A. Baker is active.

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Featured researches published by Fred A. Baker.


Ecological Applications | 2011

Reconciling multiple data sources to improve accuracy of large-scale prediction of forest disease incidence

Ephraim M. Hanks; Mevin B. Hooten; Fred A. Baker

Ecological spatial data often come from multiple sources, varying in extent and accuracy. We describe a general approach to reconciling such data sets through the use of the Bayesian hierarchical framework. This approach provides a way for the data sets to borrow strength from one another while allowing for inference on the underlying ecological process. We apply this approach to study the incidence of eastern spruce dwarf mistletoe (Arceuthobium pusillum) in Minnesota black spruce (Picea mariana). A Minnesota Department of Natural Resources operational inventory of black spruce stands in northern Minnesota found mistletoe in 11% of surveyed stands, while a small, specific-pest survey found mistletoe in 56% of the surveyed stands. We reconcile these two surveys within a Bayesian hierarchical framework and predict that 35-59% of black spruce stands in northern Minnesota are infested with dwarf mistletoe.


Environmental Monitoring and Assessment | 1993

Monitoring the urban forest: Case studies and evaluations

Fred A. Baker

Urban forestry is a new science, with monitoring techniques that are still evolving. Tree inventory is most commonly practiced, but we are learning to better monitor the benefits and liabilities provided by urban trees. These results are often for political, social, and biological purposes. Although most monitoring is done at the project or local level, examples of state and national projects are given. Quality control procedures are infrequently used, but could substantially improve the accuracy of data collected.


Journal of The Air & Waste Management Association | 2006

Ozone Concentrations in the Central Wasatch Mountains of Utah

David J. Wager; Fred A. Baker

Abstract In the Salt Lake Valley, a June through August SUM60 value (sum of hourly average ozone concentrations ≥60 parts per billion by volume [ppbv]) of 25,000 ppbv-hr was exceeded in 9 yr between 1978 and 1998. Ozone concentrations in the nearby Central Wasatch Mountains were monitored to determine the potential for vegetation injury. The SUM60 value of 19,000 ppbv-hr in these mountains and peak hourly concentrations >100 ppbv suggests that ozone-sensitive species may be injured. Ozone concentrations in the mountains were greatest during periods of strong upslope winds from the Salt Lake Valley. Both SUM60 values and hourly average concentrations in the Central Wasatch Mountains were strongly correlated with those in the Salt Lake Valley, suggesting that data from valley stations could be used to estimate ozone in the mountains.


Review of Palaeobotany and Palynology | 2009

Phytolith types and type-frequencies in native and introduced species of the sagebrush steppe and pinyon–juniper woodlands of the Great Basin, USA

Lesley R. Morris; Fred A. Baker; C. Morris; Ronald J. Ryel


Quaternary International | 2009

Developing an Approach for Using the Soil Phytolith Record to Infer Vegetation and Disturbance Regime Changes over the Past 200 Years

Lesley R. Morris; Neil E. West; Fred A. Baker; Helga Van Miegroet; Ronald J. Ryel


Western Journal of Applied Forestry | 2004

Artificial inoculation of decay fungi into Douglas-fir with rifle or shotgun to produce wildlife trees in Western Oregon

Fred A. Baker; G. M. Filip; C. G. Parks; Steven E. Daniels


Canadian Journal of Forest Research | 2003

Potential effects of ozone, climate, and spruce budworm on Douglas-fir growth in the Wasatch Mountains

David J. Wager; Fred A. Baker


Archive | 2008

Improving student writing skills

Fred A. Baker


Northern Journal of Applied Forestry | 2012

The incidence of dwarf mistletoe in Minnesota black spruce stands detected by operational inventories

Fred A. Baker; Mark H. Hansen; John D. Shaw; Manfred Mielke; Dixon Shelstad


Northern Journal of Applied Forestry | 2004

Case study: 36 years of dwarf mistletoe in a regenerating black spruce stand in northern Minnesota

Fred A. Baker; K. Knowles

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John D. Shaw

United States Department of Agriculture

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C. G. Parks

United States Forest Service

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C. Morris

Utah State University

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Ephraim M. Hanks

Pennsylvania State University

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Manfred Mielke

United States Department of Agriculture

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Mark H. Hansen

United States Department of Agriculture

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Mevin B. Hooten

Colorado State University

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