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Articles 1801 - 1830 of 11485

Full-Text Articles in Forest Sciences

Smokejumper Obituary: Zavolis, George (Redding 1969), National Smokejumper Association Jun 2021

Smokejumper Obituary: Zavolis, George (Redding 1969), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Zebarth, Gerald Edward (Missoula 1946), National Smokejumper Association Jun 2021

Smokejumper Obituary: Zebarth, Gerald Edward (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Kase, Charles Jeffrey "Chuck" (La Grande 1974), National Smokejumper Association Jun 2021

Smokejumper Obituary: Kase, Charles Jeffrey "Chuck" (La Grande 1974), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Successful Management Of Invasive Rats Across A Fragmented Landscape, Sarah K. Barney, Devin R. Leopold, Kainana Francisco, David J. Flaspohler, Tadashi Fukami, Christian P. Giardina, Daniel S. Gruner, Jessie L. Knowlton, William C. Pitt, Erin E. Wilson Rankin Jun 2021

Successful Management Of Invasive Rats Across A Fragmented Landscape, Sarah K. Barney, Devin R. Leopold, Kainana Francisco, David J. Flaspohler, Tadashi Fukami, Christian P. Giardina, Daniel S. Gruner, Jessie L. Knowlton, William C. Pitt, Erin E. Wilson Rankin

Michigan Tech Publications, Part 1

Summary Introduced mammalian predators are responsible for the decline and extinction of many native species, with rats (genus Rattus) being among the most widespread and damaging invaders worldwide. In a naturally fragmented landscape, we demonstrate the multi-year effectiveness of snap traps in the removal of Rattus rattus and Rattus exulans from lava-surrounded forest fragments ranging in size from 10 ha. Relative to other studies, we observed low levels of fragment recolonization. Larger rats were the first to be trapped, with the average size of trapped rats decreasing over time. Rat removal led to distinct shifts in the foraging height and …


Smokejumper Obituary: Wilcox, Robert L. (Redding 1963), National Smokejumper Association Jun 2021

Smokejumper Obituary: Wilcox, Robert L. (Redding 1963), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Gastineau Jr., Orval W. "Bill" (Missoula 1963), National Smokejumper Association Jun 2021

Smokejumper Obituary: Gastineau Jr., Orval W. "Bill" (Missoula 1963), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Wells, Donald K. (Missoula 1950), National Smokejumper Association Jun 2021

Smokejumper Obituary: Wells, Donald K. (Missoula 1950), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Walker, Mike (La Grande 1976), National Smokejumper Association Jun 2021

Smokejumper Obituary: Walker, Mike (La Grande 1976), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Tucker, Benjamin R. "Benny" (Cave Junction 1959), National Smokejumper Association Jun 2021

Smokejumper Obituary: Tucker, Benjamin R. "Benny" (Cave Junction 1959), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Versteeg, Ronald Brian "Ron" (Cave Junction 1978), National Smokejumper Association Jun 2021

Smokejumper Obituary: Versteeg, Ronald Brian "Ron" (Cave Junction 1978), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Tripp, James Woodbury (Missoula 1949), National Smokejumper Association Jun 2021

Smokejumper Obituary: Tripp, James Woodbury (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Sykes, Stanley Lee (Missoula 1946), National Smokejumper Association Jun 2021

Smokejumper Obituary: Sykes, Stanley Lee (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Taipole, Dennis Allen "Denny" (North Cascades 1953), National Smokejumper Association Jun 2021

Smokejumper Obituary: Taipole, Dennis Allen "Denny" (North Cascades 1953), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Teichert, Clarence Dwayne (Idaho City 1955), National Smokejumper Association Jun 2021

Smokejumper Obituary: Teichert, Clarence Dwayne (Idaho City 1955), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Sweet, Robert E. (Cave Junction 1948), National Smokejumper Association Jun 2021

Smokejumper Obituary: Sweet, Robert E. (Cave Junction 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Thompson, Newton Robert (Missoula 1949), National Smokejumper Association Jun 2021

Smokejumper Obituary: Thompson, Newton Robert (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Viviano, Charles J. "Chuck" (West Yellowstone 1953), National Smokejumper Association Jun 2021

Smokejumper Obituary: Viviano, Charles J. "Chuck" (West Yellowstone 1953), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Taucher, John Willard (North Cascades 1946), National Smokejumper Association Jun 2021

Smokejumper Obituary: Taucher, John Willard (North Cascades 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Tom, Lyle Charles (Missoula 1951), National Smokejumper Association Jun 2021

Smokejumper Obituary: Tom, Lyle Charles (Missoula 1951), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Harter, Charles G. "Jack" (Cave Junction 1951), National Smokejumper Association Jun 2021

Smokejumper Obituary: Harter, Charles G. "Jack" (Cave Junction 1951), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Morris, Orvel C. (North Cascades 1946), National Smokejumper Association Jun 2021

Smokejumper Obituary: Morris, Orvel C. (North Cascades 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Spatial And Temporal Variation Of Epigaeic Beetle Assemblages (Coleoptera, Carabidae, Staphylinidae) In Aspen-Dominated Mixedwood Forests Across North-Central Alberta, H. E. James Hammond, Sergio García-Tejero, Greg R. Pohl, David W. Langor, John R. Spence Jun 2021

Spatial And Temporal Variation Of Epigaeic Beetle Assemblages (Coleoptera, Carabidae, Staphylinidae) In Aspen-Dominated Mixedwood Forests Across North-Central Alberta, H. E. James Hammond, Sergio García-Tejero, Greg R. Pohl, David W. Langor, John R. Spence

Aspen Bibliography

Epigaeic beetle assemblages were surveyed using continuous pitfall trapping during the summers of 1992 and 1993 in six widely geographically distributed locations in Alberta’s aspen-mixedwood forests prior to initial forest harvest. Species composition and turnover (β-diversity) were evaluated on several spatial scales ranging from Natural Regions (distance between samples 120–420 km) to pitfall traps (40–60 m). A total of 19,885 ground beetles (Carabidae) representing 40 species and 12,669 rove beetles (non-Aleocharinae Staphylinidae) representing 78 species was collected. Beetle catch, species richness, and diversity differed significantly among the six locations, as did the identity of dominant species. Beetle species composition differed …


Smokejumper Obituary: Pearce, Jimmy B. (Fairbanks 1969), National Smokejumper Association Jun 2021

Smokejumper Obituary: Pearce, Jimmy B. (Fairbanks 1969), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Haiges, Lowell Manfred "Manny" (Missoula 1958), National Smokejumper Association Jun 2021

Smokejumper Obituary: Haiges, Lowell Manfred "Manny" (Missoula 1958), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Hydraulic Architecture Explains Species Moisture Dependency But Not Mortality Rates Across A Tropical Rainfall Gradient, Alexandria L. Pivovaroff, Brett T. Wolfe, Nate G. Mcdowell, Bradley O. Christoffersen, Stuart J. Davies, L. Turin Dickman, Charlotte Grossiord, Riley T. Leff, Alistair Rogers, Shawn P. Serbin Jun 2021

Hydraulic Architecture Explains Species Moisture Dependency But Not Mortality Rates Across A Tropical Rainfall Gradient, Alexandria L. Pivovaroff, Brett T. Wolfe, Nate G. Mcdowell, Bradley O. Christoffersen, Stuart J. Davies, L. Turin Dickman, Charlotte Grossiord, Riley T. Leff, Alistair Rogers, Shawn P. Serbin

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Intensified droughts are affecting tropical forests across the globe. However, the underlying mechanisms of tree drought response and mortality are poorly understood. Hydraulic traits and especially hydraulic safety margins (HSMs), that is, the extent to which plants buffer themselves from thresholds of water stress, provide insights into species-specific drought vulnerability. We investigated hydraulic traits during an intense drought triggered by the 2015–2016 El Niño on 27 canopy tree species across three tropical forest sites with differing precipitation. We capitalized on the drought event as a time when plant water status might approach or exceed thresholds of water stress. We investigated …


Preliminary Assessment Of Climatic Sensitivity Of Riparian Old-Growth Eastern Hemlock, John B. Holden Iv, Sophan Chhin, Andrew Hirsch, Eric Yetter Jun 2021

Preliminary Assessment Of Climatic Sensitivity Of Riparian Old-Growth Eastern Hemlock, John B. Holden Iv, Sophan Chhin, Andrew Hirsch, Eric Yetter

Mountaineer Undergraduate Research Review

Eastern hemlock is a long-lived, slow growing climax species in North America currently undergoing a major decline in population due to a combination of effects derived from hemlock woolly adelgid (HWA) as well as changing climate patterns. Data was collected in an old-growth, riparian hemlock forest within the West Virginia University Research Forest to understand the effect of monthly climate factors (mean temperature, mean precipitation, and climate moisture index (CMI)) on hemlock radial growth. Results indicated that March mean temperature and May CMI of the current growth year are positively associated with hemlock growth whereas prior year summer conditions of …


Assessing The Value Of Video Resources In Extension-Led Natural Resources Management Continuing Education Programs, Eli S. Sagor, Marcella A. Windmuller-Campione, Madison G. Rodman Jun 2021

Assessing The Value Of Video Resources In Extension-Led Natural Resources Management Continuing Education Programs, Eli S. Sagor, Marcella A. Windmuller-Campione, Madison G. Rodman

Journal of Extension

Effective delivery of continuing education programs can improve their impact. Using the first of four two-week modules of a professional short course, we tested outcomes of a flipped classroom approach, comparing professional foresters’ completion rates, preference for, and perceived value of pre-module content delivered via video and reading. Participants in the National Advanced Silviculture Program self-reported significantly higher pre-module completion rates, preference for, and perceived value of video over reading. This simple study suggests the potential for video to serve as an accessible and preferred format for delivery of key content to supplement an in-person continuing education program.


Chromosome-Level Genome Assembly Of A Regenerable Maize Inbred Line A188, Guifang Lin, Cheng He, Jun Zheng, Dal Hoe Koo, Ha Le, Huakun Zheng, Hairong Wei, Et. Al. Jun 2021

Chromosome-Level Genome Assembly Of A Regenerable Maize Inbred Line A188, Guifang Lin, Cheng He, Jun Zheng, Dal Hoe Koo, Ha Le, Huakun Zheng, Hairong Wei, Et. Al.

Michigan Tech Publications, Part 1

Background: The maize inbred line A188 is an attractive model for elucidation of gene function and improvement due to its high embryogenic capacity and many contrasting traits to the first maize reference genome, B73, and other elite lines. The lack of a genome assembly of A188 limits its use as a model for functional studies. Results: Here, we present a chromosome-level genome assembly of A188 using long reads and optical maps. Comparison of A188 with B73 using both whole-genome alignments and read depths from sequencing reads identify approximately 1.1 Gb of syntenic sequences as well as extensive structural variation, including …


Coarse Woody Debris Decomposition Assessment Tool: Model Development And Sensitivity Analysis, Zhaohua Dai, Carl C. Trettin, Andrew Burton, Martin Jurgensen, Deborah S. Page-Dumroese, Brian T. Forschler, Jonathan S. Schilling, Daniel L. Lindner Jun 2021

Coarse Woody Debris Decomposition Assessment Tool: Model Development And Sensitivity Analysis, Zhaohua Dai, Carl C. Trettin, Andrew Burton, Martin Jurgensen, Deborah S. Page-Dumroese, Brian T. Forschler, Jonathan S. Schilling, Daniel L. Lindner

Michigan Tech Publications, Part 1

Coarse woody debris (CWD) is an important component in forests, hosting a variety of organisms that have critical roles in nutrient cycling and carbon (C) storage. We developed a process-based model using literature, field observations, and expert knowledge to assess woody debris decomposition in forests and the movement of wood C into the soil and atmosphere. The sensitivity analysis was conducted against the primary ecological drivers (wood properties and ambient conditions) used as model inputs. The analysis used eighty-nine climate datasets from North America, from tropical (14.2° N) to boreal (65.0° N) zones, with large ranges in annual mean temperature …


Transcriptome-Wide Identification And Characterization Of Micrornas In Diverse Phases Of Wood Formation In Populus Trichocarpa, Ruiqi Wang, Mengxuan Reng, Shuanghui Tian, Cong Liu, He Cheng, Yingying Liu, Hairong Wei, Et. Al. Jun 2021

Transcriptome-Wide Identification And Characterization Of Micrornas In Diverse Phases Of Wood Formation In Populus Trichocarpa, Ruiqi Wang, Mengxuan Reng, Shuanghui Tian, Cong Liu, He Cheng, Yingying Liu, Hairong Wei, Et. Al.

Michigan Tech Publications, Part 1

We applied miRNA expression profiling method to Populus trichocarpa stems of the three developmental stages, primary stem (PS), transitional stem (TS), and secondary stem (SS), to investigate miRNA species and their regulation on lignocellulosic synthesis and related processes. We obtained 892, 872, and 882 known miRNAs and 1727, 1723, and 1597 novel miRNAs, from PS, TS, and SS, respectively. Comparisons of these miRNA species among different developmental stages led to the identification of 114, 306, and 152 differentially expressed miRNAs (DE-miRNAs), which had 921, 2639, and 2042 candidate target genes (CTGs) in the three respective stages of the same order. …