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Arroyo, Dr. Renaldo J.S.

Forest Resources
Assistant Professor

Yow 105


Ph.D. Forest Resources, Mississippi State University, Mississippi State, MS

M.S. Interdisciplinary Studies (Geography and Natural Resources Management), Texas Tech University, Lubbock, TX

B.S. Forestry, Humboldt State University, Arcata, CA

B.A. Literature, University of California at Santa Cruz, Santa Cruz, CA


Professional Societies:

Society of American Foresters

Xi Sigma Pi

American Society for Photogrammetry and Remote Sensing

Association for Fire Ecology

Society for Range Management



I grew up in the Bay Area in Northern California and developed a love for the outdoors and an appreciation for nature as I grew older.

Work related experience includes seven seasons as a wildland firefighter for the Bureau of Land Management (BLM), National Park Service (NPS), and US Forest Service (USFS). I was classified as, and worked as, a forestry and range technician in California, Colorado, and Wyoming (and was on assignment in Utah and Arizona). Other duties included cache inventory, clerical duties, timber marking, GPS surveying, wildlife tracking, and fuels management. The fuels management work included various restoration projects, which were particularly interesting to me and rewarding. Examples of this work included eucalyptus removal on the California coast, tamarisk removal and wetland restoration in central California, and working with private landowners on various prescribed fires in the Texas panhandle on Conservation Reserve Program (CPR) lands. I have also worked on prescribed fires in northern California.

My undergraduate forestry degree at Humboldt State focused on wildland fire management. Once I began my master’s at Texas Tech, my focus shifted to range and GIS. The research emphasis for my Ph.D. degree program was remote sensing and forest inventory focusing on the feasibility of using Landsat data to estimate timber volume in central Mississippi. I also collaborated with the Mississippi Forestry Commission (MFC) and the Mississippi Institute for Forest Inventory (MIFI) on its state-wide operational inventory. MIFI inventories one-fifth of the state each year on a rotating basis. Inventory results are used to recruit forest industry to the state and ensure sustainable forest resources through appropriate practices and policies. I processed Landsat data and created the MIFI sampling frame for the 2013 inventory.






Natural Resources Conservation


» Syllabus
» Forest Science Style Guide
» Journal of Wildlife Management Style Guide
» How to write scientifically

An introductory course dealing with renewable natural resources and basic concepts of their management. Soil, water, range, forests, wildlife, and fisheries will be emphasized.

Forest Measurements


» Syllabus

Introduction to forest products measurements, log rules, volume/weight tables and equations, measurement of standing trees, timber stand inventory techniques, and measurement of growth.

Forest Surveying and Mapping


» Syllabus

An introduction to land surveying, map preparation and map interpretation. Topics included are: surveying terminology, distance and area measurement, surveying methods and equipment use (including GPS technology), basic map drafting techniques, coordinate systems, and rectangular systems for land referencing.

Fire Ecology


» Anderson Fuel Models
» Scott and Burgan Fuel Models
» National Fire Danger Rating System Structure

Learning about the prescribed use of fire in forestry operations beginning with the chemistry of how fire starts all the way to how it has and is affecting forest policy today.

Forest Mensuration

Using knowledge gained about forest products measurements, log rules, volume/weight tables and equations, measurement of standing trees, timber stand inventory techniques, and measurement of growth to complete timber surveys and gain understanding of how to measure and value stands of timber.


To gain a basic understanding of the GIS system. In this course, the students will learn how to take data and visualize it spatially and statistically. Students will also become skilled in cartography.

Timber Management

Timber management is a synthesis of methods and materials learned in previous classes. Items such as: owner objectives, forest types, product markets, growing and cutting timber for specified markets, hunting leases, aesthetics, and preservation are some of the many topics of conversation.
The ultimate goal is to understand how to help landowners maximize benefits from their forests while conserving resources for future generations.

Forest Measurements and Mapping

An introduction to the methods of assessing information on forest resources and presenting relevant information in a map format. Basic instruction will include forest inventory techniques, measuring standing trees, log rules and scaling, growth measurement. Mapping will include basic drafting and plotting techniques, acreage determination, constructing cover maps of forest types and wildlife habitat, and map orientation and interpretation.

Forest Safety

Through discussion and outdoor exercises, this course is designed to provide students with basic knowledge in multiple subjects dealing with forest safety. This course will be taught in 3 blocks: CPR/First Aid, chainsaw and fire safety, and hazardous chemicals.


The study of trees and how to identify the trees of the southeastern United States.