Forest Sciences Commons^™

Smokejumper Obituary: De Jarnette, Monroe C. "Spud" (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Romness, Gary Palmer (Missoula 1962), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Analysis And Installation Of A Demonstration Agroforestry Orchard For Californian Mediterranean Plant Communities, Brandon Hurd

Master of Science in Environmental Sciences and Management Projects

Climate-appropriate agroforestry can provide low-input food security and ecosystem services for local Californian Mediterranean climates, while conserving natural resources (e.g., water, nitrogen, etc.). This project showcases a variety of agroforestry methods for five common plant communities of California and other analogous Mediterranean climates at the CAFES Experimental Farm on the campus of Cal Poly San Luis Obispo. Plant community species and their ethnobotanical uses were analyzed to mimic and incorporate aspects of native flora. Agricultural plants were also characterized to represent each of the five selected plant communities. GIS was used to assess the project site for soil, slope, and …

Simulation Of Monthly Mean And Monthly Base Flow Of Streamflow Using Random Forests For The Mississippi River Alluvial Plain, 1901 To 2018, Benjamin J. Dietsch, William H. Asquith, Brian K. Breaker, Stephen M. Westenbroek, Wade H. Kress

United States Geological Survey: Water Reports and Publications

Improved simulations of streamflow and base flow for selected sites within and adjacent to the Mississippi River Alluvial Plain area are important for modeling groundwater flow because surface-water flows have a substantial effect on groundwater levels. One method for simulating streamflow and base flow, random forest (RF) models, was developed from the data at gaged sites and, in turn, was used to make monthly mean streamflow and base-flow predictions at 162 ungaged sites in the study area. Daily streamflow observations and computed base flow from 247 streamgages were used as the basis for the development of these RF models. RF …

Coarse Woody Debris And Carbon Stocks In Pine Forests After 50 Years Of Recovery From Harvesting In Northeastern California, Jianwei Zhang, Deborah S. Page-Dumroese, Martin Jurgensen, Matt Busse, Kim G. Mattson

Michigan Tech Publications, Part 1

The long-term effects of harvesting on stand carbon (C) pools were assessed in a dry, interior pine-dominated forest at the Blacks Mountain Experimental Forest in northeastern California. Six 8-hectacre plots, established in 1938–1943, were treated as either an uncut control or a heavy-cut harvest (three-quarters of the stand volume removed). Response variables included C pools in overstory tree and shrub, coarse woody debris (CWD), forest floor, mineral soil (to 30 cm depth), cubicle brown root fragments of wood, fine roots, and ectomycorrhizal root tips. CWD was further classified as intact wood or more highly decayed brown rot or white rot …

Allometry Of Bud Dynamic Pattern And Linkage Between Bud Traits And Ecological Stoichiometry Of Nitraria Tangutorum Under Fertilizer Addition, Qinghe Le, Na Duan, Chenggong Liu, Huiqing Li, Lan Xu

Natural Resource Management Faculty Publications

Affected by the pressure and constraints of available resources, plant growth and development, as well as plant life history strategies, usually vary with environmental conditions. Plant buds play a crucial role in the life history of woody plants. Nitraria tangutorum is a common dominant woody species in desertified areas of northern China and its growth is critical to the desert ecosystem. Revealing the allometry of N. tangutorum aboveground bud fates and the linkage between bud traits and plant nutrient contents and stoichiometric ratios can be useful in understanding plant adaptation strategy. We applied seven nitrogen and phosphorus fertilizer addition treatments …

Assessing Functional Biodiversity For The Future Of Plants, Planet, And People, Ali Loker

Doctor of Plant Health Program: Dissertations and Student Research

Biodiversity plays a critical role in supporting life in global ecosystems and its links to ecosystem services and sustainability are recognized by scientific and non-scientific communities. Growing awareness of the importance of biodiversity is accelerated by discussions of its loss, and how to design interventions to conserve and mitigate a biodiversity crisis. Stakeholders are funding and implementing assessment strategies at various scales to help direct conservation efforts. There is also growing interest in measuring and communicating biodiversity outcomes.

Functional biodiversity characterizes the multiplicity of life forms into groups based on their diverse contributions to natural and agro-ecosystems. Assessing functional biodiversity …

Systematic Review: Effect Of Cover Crop On Working Farm, Noella A. Bahatsi

Honors Program: Senior Projects (Public)

On-farm research is when research techniques such as randomized, replicated treatments strips and large-scale techniques are used on actual farms or ranches. Due to a great deal of interest and curiosity among farmers and researchers who wish to make their farming methods more profitable, efficient, and/or sustainable, this type of research has been conducted more frequently each year. On-farm research has contributed to economic growth and the transfer of knowledge to farmers because of fresh discoveries and upgraded technology (Lacoste et al., 2022). This is also where farmers collaborate with researchers to test new management practices and technologies providing unbiased …

Autotetraploidization Alters Morphology, Photosynthesis, Cytological Characteristics And Fruit Quality In Sour Jujube (Ziziphus Acidojujuba Cheng Et Liu), Lihu Wang, Lixin Wang, Tingting Ye, Jin Zhao, Lili Wang, Hairong Wei, Ping Liu, Mengjun Liu

Michigan Tech Publications, Part 1

Artificially induced polyploidization is one of the most effective techniques for improving the biological properties and creating new cultivars of fruit trees. Up to now, systematic research on the autotetraploid of sour jujube (Ziziphus acidojujuba Cheng et Liu) has not been reported. ‘Zhuguang’ is the first released autotetraploid sour jujube induced with colchicine. The objective of this study was to compare the differences in the morphological, cytological characteristics, and fruit quality between diploid and autotetraploid. Compared with the original diploid, ‘Zhuguang’ showed dwarf phenotypes and decreased tree vigor. The sizes of the flowers, pollen, stomata, and leaves of ‘Zhuguang’ were …

Correction To: Determining Puma Habitat Suitability In The Eastern Usa (Biodiversity And Conservation, (2023), 10.1007/S10531-022-02529-Z), Veronica Yovovich, Nathaniel Robinson, Hugh Robinson, Michael J. Manfredo, Shelby Perry, Jeremy T. Bruskotter, John A. Vucetich, Luis Aníbal Solórzano, Lydia A. Roe, Alison Lesure, Jamie Robertson, Tom Butler, L. Mark Elbroch

Michigan Tech Publications, Part 1

In the original article, One of the author names was incorrectly misspelled as Tom Bulter. It must be published as “Tom Butler”. The original article has been corrected.

Smokejumper Obituary: Christensen, James Gordon (Missoula 1961), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Bison Influences On Composition And Diversity Of Riparian Plant Communities In Yellowstone National Park, J. Boone Kauffman, Dian Lyn Cummings, Cimarron Kauffman, Robert L. Beschta, Jeremy Brooks, Keeley Macneill, William J. Ripple

Aspen Bibliography

Riparian zones are among the most biologically diverse ecosystems in the Intermountain West, USA, and provide valuable ecosystem services, including high rates of biotic productivity, nutrient processing, and carbon storage. Thus, their sustainability is a high priority for land managers. Large ungulates affect composition and structure of riparian/stream ecosystems through herbivory and physical effects, via trailing and trampling. Bison (Bison bison) in Yellowstone National Park (YNP) have been characterized as "ecosystem engineers" because of their demonstrated effects on phenology, aboveground productivity of grasses, and woody vegetation structure. Bison have greatly increased in numbers during the last two decades …

Smokejumper Obituary: Scott, Jonathan Lavon "Scotty" (Mccall 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Kirkpatrick, John Roy (Grangeville 1962), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Holtet, John A. (Missoula 1961), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Dominant Ecological Processes And Plant Functional Strategies Change During The Succession Of A Subtropical Forest, Taotao Han, Hai Ren, Dafeng Hui, Yanpeng Zhu, Hongfang Lu, Qingfeng Guo, Jun Wang

Biology Faculty Research

Understanding community assembly process could enhance forest conservation and restoration, while which dominant ecological process drives the community assembly during forest succession is still controversial. In this study, the phylogeny-based and functional trait-based indicators were used to investigate the community assembly processes during forest succession in southern China. 30 dominant species and 33 functional trait indicators related to plant competition, reproduction, and defense strategies, 7 environmental factors related to light availability and soil nutrients, and species richness were selected to explore the dominant ecological processes during succession via Monte Carlo method, structural equation model, multiple linear regression, and one-way …

Properties And Emissions Of Three-Layer Particleboards Manufactured With Mixtures Of Wood Chips And Partially Liquefied Bark, Wen Jiang, Stergios Adamopoulos, Reza Hosseinpourpia, Thomas Walther, Sergej Medved

Michigan Tech Publications, Part 1

Partial liquefaction of residual biomass shows good potential for developing new materials suitable for making bio-based composites. Three-layer particleboards were produced by replacing virgin wood particles with partially liquefied bark (PLB) in the core or surface layers. PLB was prepared by the acid-catalyzed liquefaction of industrial bark residues in polyhydric alcohol. The chemical and microscopic structure of bark and residues after liquefaction were evaluated by means of Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM), while the particleboards were tested for their mechanical and water-related properties, as well as their emission profiles. Through a partial liquefaction process, some …

Comparison Of High-Resolution Naip And Unmanned Aerial Vehicle (Uav) Imagery For Natural Vegetation Communities Classification Using Machine Learning Approaches, Parth Bhatt, Ann Maclean

Michigan Tech Publications, Part 1

To map and manage forest vegetation including wetland communities, remote sensing technology has been shown to be a valid and widely employed technology. In this paper, two ecologically different study areas were evaluated using free and widely available high-resolution multispectral National Agriculture Imagery Program (NAIP) and ultra-high-resolution multispectral unmanned aerial vehicle (UAV) imagery located in the Upper Great Lakes Laurentian Mixed Forest. Three different machine learning algorithms, random forest (RF), support vector machine (SVM), and averaged neural network (avNNet), were evaluated to classify complex natural habitat communities as defined by the Michigan Natural Features Inventory. Accurate training sets were developed …

Forest Ecosystem Properties Emerge From Interactions Of Structure And Disturbance, J. Christina Mitchell, Daniel M. Kashian, Xiongwen Chen, Stella Cousins, David J. Flaspohler, Daniel S. Gruner, Jeremy S. Johnson, Thilina D. Surasinghe, Jenny Zambrano, Brian Buma

Michigan Tech Publications, Part 1

Forest structural diversity and its spatiotemporal variability are constrained by environmental and biological factors, including species pools, climate, land-use history, and legacies of disturbance regimes. These factors influence forest responses to disturbances and their interactions with structural diversity, potentially creating structurally mediated emergent properties at local to continental spatial scales and over evolutionary time. Here, we present a conceptual framework for exploring the emergent properties that arise from interactions between forest structural diversity and disturbances. We synthesize and present definitions for key terms, including emergent property, disturbance, and resilience, and highlight various types and examples of emergent properties, such as …

Genomic Underpinnings Of Population Persistence In Isle Royale Moose, Christopher C. Kyriazis, Annabel C. Beichman, Kristin Brzeski, Sarah Hoy, Rolf O. Peterson, John A. Vucetich, Leah Vucetich, Kirk E. Lohmueller, Robert K. Wayne

Michigan Tech Publications, Part 1

Island ecosystems provide natural laboratories to assess the impacts of isolation on population persistence. However, most studies of persistence have focused on a single species, without comparisons to other organisms they interact with in the ecosystem. The case study of moose and gray wolves on Isle Royale allows for a direct contrast of genetic variation in isolated populations that have experienced dramatically differing population trajectories over the past decade. Whereas the Isle Royale wolf population recently declined nearly to extinction due to severe inbreeding depression, the moose population has thrived and continues to persist, despite having low genetic diversity and …