Forest Sciences Commons^™

Evaluating The Functional Traits Of The Pioneering Species: Insights To Forest Restoration, Rovana Mansul Jawani, Nomar Ali Ramoncito, Gretchen Quimson

Journal of Environmental Science and Sustainable Development

The influence of plant traits on interspecific demographic rates to growth and mortality has recently received an increasing attention because it allows understanding of the underlying determinants of species success especially in open degraded areas. This study examined the trait-based approach in selecting potential species for forest restoration. Five (5) native/indigenous pioneer species were evaluated for functional traits such as plant height, branching architecture, leaf dry matter content, specific leaf area, stem density, and bark thickness. All samples were collected from healthy and well grown mature trees growing in secondary forest of Central Mindanao University. The range of values for …

Reviving Ghost Alleles: Genetically Admixed Coyotes Along The American Gulf Coast Are Critical For Saving The Endangered Red Wolf, Bridgett M. Vonholdt, Joseph W. Hinton, Amy C. Shutt, Sean M. Murphy, Melissa L. Karlin, Jennifer R. Adams, Lisette P. Waits, Kristin Brzeski

Michigan Tech Publications

The last known red wolves were captured in southwestern Louisiana and eastern Texas in 1980 to establish a captive breeding population. Before their extirpation, gene flow with coyotes resulted in the persistence of endangered red wolf genetic variation in local coyote populations. We assessed genomic ancestry and morphology of coyotes in southwestern Louisiana. We detected that 38 to 62% of the coyote genomes contained red wolf ancestry acquired in the past 30 years and have an admixture profile similar to that of the canids captured before the extirpation of red wolves. We further documented a positive correlation between ancestry and …

Limited Effects Of Precipitation Manipulation On Soil Respiration And Inorganic N Concentrations Across Soil Drainage Classes In Northern Minnesota Aspen Forests, Anna B. Stockstad, Robert A. Slesak, Alan J. Toczydlowski, Charles R. Blinn, Randall K. Kolka, Stephen D. Sebestyen

Aspen Bibliography

It is critical to gain insight into the responses of forest soils to the changing climate. We simulated future climate conditions with growing season throughfall reduction (by 50%) and winter snow removal using a paired-plot design across a soil drainage class gradient at three upland, Populus-dominated forests in northern Minnesota, USA. In situ bulk soil respiration and concentrations of extractable soil N were measured during the summers of 2020–2021. Soil respiration and N concentrations were not affected by throughfall reduction and snow removal, which was largely attributed to the limited treatment effects on soil moisture content and soil temperature. …

Understory Plant Communities Show Resistance To Drought, Hurricanes, And Experimental Warming In A Wet Tropical Forest, Aura M. Alonso-Rodríguez, Tana E. Wood, Jamarys Torres-Díaz, Molly A. Cavaleri, Sasha C. Reed, Benedicte Bachelot

Michigan Tech Publications

Global climate change has led to rising temperatures and to more frequent and intense climatic events, such as storms and droughts. Changes in climate and disturbance regimes can have non-additive effects on plant communities and result in complicated legacies we have yet to understand. This is especially true for tropical forests, which play a significant role in regulating global climate. We used understory vegetation data from the Tropical Responses to Altered Climate Experiment (TRACE) in Puerto Rico to evaluate how plant communities responded to climate warming and disturbance. The TRACE understory vegetation was exposed to a severe drought (2015), 2 …

Smokejumper Obituary: Goldammer, Albert Charles (Missoula 1964), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Bbt Acoustic Alternative Top Bracing Cadd Data Set-Norev-2022jun28, Bill Hemphill

STEM Guitar Project’s BBT Acoustic Kit

This electronic document file set consists of an overview presentation (PDF-formatted) file and companion video (MP4) and CADD files (DWG & DXF) for laser cutting the ETSU-developed alternate top bracing designs and marking templates for the STEM Guitar Project’s BBT (OM-sized) standard acoustic guitar kit. The three (3) alternative BBT top bracing designs in this release are
(a) a one-piece base for the standard kit's (Martin-style) bracing,
(b) 277 Ladder-style bracing, and
(c) an X-braced fan-style bracing similar to traditional European or so-called 'classical' acoustic guitars.

The CADD data set for each of the three (3) top bracing designs includes …

Influence Of Strip Clearcuts, Deer Exclusion And Herbicide On Initial Sapling Recruitment In Northern Hardwood Forests, Stefan Hupperts, Christopher R. Webster, Robert Froese, Brandon Bal, Yvette L. Dickinson

Michigan Tech Publications

Sapling recruitment in hardwood forests is often suppressed by overstory shade, interspecific competition, and browsing pressure from white-tailed deer (Odocoileus virginianus Zimmerman). In some northern hardwood stands, these three interacting factors may cause persistent recruitment failure of the dominant canopy species, sugar maple (Acer saccharum Marsh.), into the sapling size class. In this study, we compared initial (two-year) sugar maple and hophornbeam (Ostrya virginiana ((Mill.) K. Koch) seedling and sapling recruitment in strip clearcuts to strip selection cuts, with combinations of herbicide and deer exclosures, in a northern hardwood forest with limited sugar maple sapling recruitment. We found that sugar …

Coping With Environmental Constraints: Geographically Divergent Adaptive Evolution And Germination Plasticity In The Transcontinental Populus Tremuloides, Roos Goessen, Nathalie Isabel, Christian Wehenkel, Nathalie Pavy, Lisa Tischenko, Lyne Touchette, Isabelle Giguère, Marie-Claude Gros-Louis, Jérôme Laroche, Brian Boyle, Raju Soolanayakanahally, Karen E. Mock, Javier Hernández-Velasco, Sergio Leonel Simental-Rodriguez, Jean Bousquet, Ilga M. Porth

Aspen Bibliography

Societal Impact Statement

Syntheses clearly show that global warming is affecting ecosystems and biodiversity around the world. New methods and measures are needed to predict the climate resilience of plant species critical to ecosystem stability, to improve ecological management and to support habitat restoration and human well-being. Widespread keystone species such as aspen are important targets in the study of resilience to future climate conditions because they play a crucial role in maintaining various ecosystem functions and may contain genetic material with untapped adaptive potential. Here, we present a new framework in support of climate-resilient revegetation based on comprehensively understood …

Smokejumper Obituary: Robertson, William Joseph “Bill” (Missoula 1957), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Bender, Walter L. “Ozzie” (Missoula 1947), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Christensen, Lamonte B. “Chris” (Idaho City 1955), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Magazine, July 2022, National Smokejumper Association

Smokejumper and Static Line Magazines

This issue of the National Smokejumper Association (NSA) Smokejumper Magazine contains the following articles: Message from the President; Militant Environmental Activism; My Year in South Vietnam; "The Mouse that Soared" Book Review; Odds and Ends; National Smokejumper Association Position Statements; Recording Smokejumper History: 1945 Rookies-The End of the Civilian Public Service Years; Dixie Fire Destruction Didn't Have To Happen; Sounding Off from the Editor; Wildland Firefighters Not Served Well by Albuquerque Service Center; "Tell Us About Our Father"; Old Smokejumper Memories of High Mountain Two Jumper Fire; More Smokejumper's Stories (1954-56); Good Sam Funds at Work; NSA Restoring Our Nation's …

Soil Quality Indicators And Vegetation Responses Following Ecological Restoration Thinning Of Ponderosa Pine On Three Soil Parent Material Types Under Grazing And Non-Grazing In Northern Arizona, Christopher Macdonald

Electronic Theses and Dissertations

This research was performed in a northern Arizona ponderosa pine (Pinus ponderosa P. & C., Lawson) forest. The objectives were to a) increase understanding of long-term vegetation responses to ecological restoration treatments on three soils types, with and without grazing, b) evaluate the responses soil physical, chemical, and biological properties to restoration treatments, with and without grazing, c) determine the utility of measured soil quality indicators to informing risks to sustainable soils management in southwestern ponderosa pine forests.

There were no significant differences in soil bulk density by soil type, treatment type, or grazing treatment. No significant differences …

Monitoring Whitebark Pine Stand Health In The Central Washington Cascades, Nancy H. Parra, Teresa J. Lorenz, Taza D. Schaming, Alison Scoville

Student Published Works

Whitebark pine (Pinus albicaulis) plays a vital role in colonizing newly disturbed areas, providing shade for other tree species to germinate, and supplying food for a variety of birds and mammals, such as Clark’s Nutcrackers (Nucifraga columbiana) and grizzly bears (Ursus arctos horribilis). Decline of whitebark pine populations has been attributed to several factors, including white pine blister rust (Cronartium ribicola), mountain pine beetle (Dendroctonus ponderosae) outbreaks, and fire exclusion. In 2009, the U.S. Forest Service began to install permanent plots in whitebark pine stands in Washington and Oregon as …

Smokejumper Obituary: Morrow, Robert J. “Rob” (Mccall 1989), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Contribución A La Conservación De La Orquídea Rodriguezia Granadensis(Lindl.) Rchb.F. En La Hacienda Betania (Fusagasugá, Colombia), Arlette Ivonne Gil Clavijo, Jenny Paola Moreno López, Laguandio Del Cristo Banda Sánchez

Ciencias Agropecuarias

Esta cartilla presenta a la comunidad la información generada en el proyecto de investigación denominado “Aproximación a la ecología de orquídeas nativas en el ecosistema hacienda Betania con proyección a su conservación, manejo y producción”, el cual fue desarrollado por el Grupo de Investigación PROSAFIS de la Universidad de Cundinamarca. Este manuscrito es una contribución al manejo, tuvieron y valoración de las orquídeas nativas, destacando la orquídea Rodriguezia granadensis, presente en ciertos relictos agroecológicos en áreas de influencia de Fusagasugá. Los resultados obtenidos en la investigación mostraron la preferencia o alta adaptación de R. granadensis a los forofitos de cítricos …

Ptrwox13a Promotes Wood Formation And Bioactive Gibberellins Biosynthesis In Populus Trichocarpa, Yang Zhang, Yingying Liu, Xueying Wang, Ruiqi Wang, Xuebing Chen, Shuang Wang, Hairong Wei, Zhigang Wei

Michigan Tech Publications

WUSCHEL-related homeobox (WOX) genes are plant-specific transcription factors (TFs) involved in multiple processes of plant development. However, there have hitherto no studies on the WOX TFs involved in secondary cell wall (SCW) formation been reported. In this study, we identified a Populus trichocarpa WOX gene, PtrWOX13A, which was predominantly expressed in SCW, and then characterized its functions through generating PtrWOX13A overexpression poplar transgenic lines; these lines exhibited not only significantly enhanced growth potential, but also remarkably increased SCW thicknesses, fiber lengths, and lignin and hemicellulose contents. However, no obvious change in cellulose content was observed. We revealed that PtrWOX13A directly …

Assessing Environmental Sensitivity In San Diego County, California, For Bird Species Of Special Concern, Eda Okan Kilic

USF Tampa Graduate Theses and Dissertations

It is widely recognized that desertification constitutes one of the biggest environmental problems on Earth. Desertification negatively impacts the future of humans and other living things all over the globe. Therefore, the assessment of desertification is essential to both monitor and combat desertification. A number of models are routinely applied to assess desertification. The MEDALUS model is one of the most popular approaches, identifying desertification risk based on an environmentally sensitive area index (ESAI) that integrates climate, vegetation, soils, groundwater, and socio-economic factors to obtain an overall rating. The goal of this study was to measure the potential impacts of …

Michigan Conifer Growers’ Perspectives On Disease Management, Emily S. Huff, Monique L. Sakalidis

The Journal of Extension

A survey of commercial nursery and Christmas tree growers was implemented online and by mail in 2018 to understand disease issues and information preferences. Overall, the majority of the respondents reported that they prefer online sources of information and many are using Extension bulletins and sources. Cultural, chemical, and weed control methods were considered extremely effective by participants and very few used biological control methods to control disease. Participants identified spruce decline, boxwood blight, and hemlock woolly adelgid as emerging disease threats, so future information to growers should focus on identification and management of these threats.

Smokejumper Obituary: Tschohl, Lester H. “Les” (Missoula 1966), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.