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Articles 1831 - 1860 of 11484

Full-Text Articles in Forest Sciences

Smokejumper Obituary: Hart, Tim David (Grangeville 2016), National Smokejumper Association Jun 2021

Smokejumper Obituary: Hart, Tim David (Grangeville 2016), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Prafke, Verlon Eugene (Mccall 1956), National Smokejumper Association Jun 2021

Smokejumper Obituary: Prafke, Verlon Eugene (Mccall 1956), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Reese, Kevin T. (Nifc 1995), National Smokejumper Association Jun 2021

Smokejumper Obituary: Reese, Kevin T. (Nifc 1995), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Quarles, Clifford Ellis (Mccall 1955), National Smokejumper Association Jun 2021

Smokejumper Obituary: Quarles, Clifford Ellis (Mccall 1955), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Pearson, Frederick Charles (Mccall 1948), National Smokejumper Association Jun 2021

Smokejumper Obituary: Pearson, Frederick Charles (Mccall 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Beyond Leaf Habit: Generalities In Plant Function Across 97 Tropical Dry Forest Tree Species, German G. Vargas, Tim J. Brodribb, Juan M. Dupuy, Roy Gonzalez, Catherine M. Hulshof, David Medvigy, Tristan A.P, Allerton, Camila Pizano, Beatriz Salgado-Negret, Naomi B. Schwartz, Skip Van Bloem, Bonnie G. Waring, Jennifer S. Powers Jun 2021

Beyond Leaf Habit: Generalities In Plant Function Across 97 Tropical Dry Forest Tree Species, German G. Vargas, Tim J. Brodribb, Juan M. Dupuy, Roy Gonzalez, Catherine M. Hulshof, David Medvigy, Tristan A.P, Allerton, Camila Pizano, Beatriz Salgado-Negret, Naomi B. Schwartz, Skip Van Bloem, Bonnie G. Waring, Jennifer S. Powers

Publications

No abstract provided.


Understory Species Increase Project: Investigating The Revegetation Of Native Herbaceous Species From Seed In Urban Forest Fragments, Erin Mcelroy Jun 2021

Understory Species Increase Project: Investigating The Revegetation Of Native Herbaceous Species From Seed In Urban Forest Fragments, Erin Mcelroy

Environmental Science and Management Professional Master's Project Reports

Management of urban forest fragments often aims to reduce invasive species and promote native species abundance and diversity. Often, these environments lack natural establishment of native forest species, including herbaceous species that are especially sensitive to site conditions. While herbaceous understory species may represent a small proportion of forest biomass, they perform important functions within forest environments, including nutrient cycling, erosion and runoff control, and providing habitat for wildlife, as well as hosting the greatest biodiversity among other forest strata. However, many restoration projects focus primarily on the revegetation of dominant woody forest species, such as hardwood trees and shrubs. …


Influence Of Climate Change On Forest Fire Occurrence And Distribution Of Sri Lanka And Modeling Of Forest Fire, Mohan Heenatigala Jun 2021

Influence Of Climate Change On Forest Fire Occurrence And Distribution Of Sri Lanka And Modeling Of Forest Fire, Mohan Heenatigala

Environmental Science and Management Professional Master's Project Reports

Forest fire is one of the main causes for forest degradation and deforestation which affect ecosystem services provided by the given landscapes. Weather variables like temperature, wind speed and direction, rainfall, and relative humidity also govern the forest fire regime and vulnerability. On the other hand, forest fuel characteristics, human impacts, population density, forest canopy density, slope, elevation, road density, closeness to the human settlement areas are other factors that determine the forest fire impact and potential of damage. Annually, 100 to 2500 hectares of forest resources are damaged due to forest fires in Sri Lanka. From the past few …


The Diverse Roles Of Cytokinins In Regulating Leaf Development, Wenqi Wu, Kang Du, Xiangyang Kang, Hairong Wei Jun 2021

The Diverse Roles Of Cytokinins In Regulating Leaf Development, Wenqi Wu, Kang Du, Xiangyang Kang, Hairong Wei

Michigan Tech Publications, Part 1

Leaves provide energy for plants, and consequently for animals, through photosynthesis. Despite their important functions, plant leaf developmental processes and their underlying mechanisms have not been well characterized. Here, we provide a holistic description of leaf developmental processes that is centered on cytokinins and their signaling functions. Cytokinins maintain the growth potential (pluripotency) of shoot apical meristems, which provide stem cells for the generation of leaf primordia during the initial stage of leaf formation; cytokinins and auxins, as well as their interaction, determine the phyllotaxis pattern. The activities of cytokinins in various regions of the leaf, especially at the margins, …


Will Oakland Burn Again: Understanding The Fire Hazard In An Urban Park System, Alessandra M. Zambrano Jun 2021

Will Oakland Burn Again: Understanding The Fire Hazard In An Urban Park System, Alessandra M. Zambrano

Master's Theses

Though almost thirty years have passed since the 1991 Tunnel Fire, the wildfire hazard is still present in the Oakland Hills. This study was conducted to determine if the vegetation in the Oakland Hills had reverted back to fuel conditions that contributed to the Tunnel Fire, examine how the fire hazard has changed since 1991, and evaluate planned wildfire mitigation. The goal was to determine how fuel conditions have changed since 1991 and compare potential fire behavior to that of the Tunnel Fire. Additionally, the study examined the effectiveness of the mitigation actions described in the East Bay Regional Park …


Smokejumper Obituary: Palfy, Stanley Allen (Redding 1963), National Smokejumper Association May 2021

Smokejumper Obituary: Palfy, Stanley Allen (Redding 1963), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Rabideau, Phillip Adrian (North Cascades 1949), National Smokejumper Association May 2021

Smokejumper Obituary: Rabideau, Phillip Adrian (North Cascades 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Mccauley, Joseph Hugh "Joe" (North Cascades 1948), National Smokejumper Association May 2021

Smokejumper Obituary: Mccauley, Joseph Hugh "Joe" (North Cascades 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Neuman, Marvin Edward (Missoula 1959), National Smokejumper Association May 2021

Smokejumper Obituary: Neuman, Marvin Edward (Missoula 1959), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Murphy, Glenn Steele (Missoula 1949), National Smokejumper Association May 2021

Smokejumper Obituary: Murphy, Glenn Steele (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Loudon, Wallace Wayne "Wally" (North Cascades 1952), National Smokejumper Association May 2021

Smokejumper Obituary: Loudon, Wallace Wayne "Wally" (North Cascades 1952), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Needham, Paul Eugene (Missoula 1949), National Smokejumper Association May 2021

Smokejumper Obituary: Needham, Paul Eugene (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Influence Of Decay Fungi On Selected Anatomical Properties Of Aningeria Robusta A. Chev. Wood, Olayiwola Olaleye Ajala, Funke Grace Adebawo, Emmanuel Adekanye Adelusi, Olaoluwa Adeniyi Adegoke May 2021

Influence Of Decay Fungi On Selected Anatomical Properties Of Aningeria Robusta A. Chev. Wood, Olayiwola Olaleye Ajala, Funke Grace Adebawo, Emmanuel Adekanye Adelusi, Olaoluwa Adeniyi Adegoke

Journal of Bioresource Management

Due to population explosion, the forest of Nigeria like most tropical forest is over exploited for choice traditional species. Therefore, need to investigate species that can substitute the species arise. Five trees of Aningeria robusta were harvested from Cocoa Research Institute of Nigeria. Bolts of 50cm length were obtained at the base, middle and the top; radial strips also obtained for innerwood, middlewood and outerwood. Ten test specimens of dimension 12mm x 15mm x 25mm were obtained per zone. N-hexane heartwood extracts of a 30 year old Gliricidia sepium diluted with kerosene using volume by volume method into 0%, 25%, …


Smokejumper Obituary: Moody, David Allen (Redding 1970), National Smokejumper Association May 2021

Smokejumper Obituary: Moody, David Allen (Redding 1970), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Mohland, Herman "Hank" (Missoula 1957), National Smokejumper Association May 2021

Smokejumper Obituary: Mohland, Herman "Hank" (Missoula 1957), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Michael, Albert Charles "Chuck" (Missoula 1954), National Smokejumper Association May 2021

Smokejumper Obituary: Michael, Albert Charles "Chuck" (Missoula 1954), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Mclin, James Elwood (Mccall 1953), National Smokejumper Association May 2021

Smokejumper Obituary: Mclin, James Elwood (Mccall 1953), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Mcdonald, Charles Alvin (Missoula 1947), National Smokejumper Association May 2021

Smokejumper Obituary: Mcdonald, Charles Alvin (Missoula 1947), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Miller, Darwin Thomas (Cave Junction 1951), National Smokejumper Association May 2021

Smokejumper Obituary: Miller, Darwin Thomas (Cave Junction 1951), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Mclaughlin, John Laurence (Missoula 1959), National Smokejumper Association May 2021

Smokejumper Obituary: Mclaughlin, John Laurence (Missoula 1959), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Latewood Ring Width Reveals Ce 1734 Felling Dates For Walker House Timbers In Tupelo, Mississippi, Usa, Thomas W. Patterson, Grant L. Harley, David H. Holt, Raymond T. Doherty, Daniel J. King, Karen J. Heeter, Ashley L. Chavez, Alyssa C. Crowell, Ian M. Stewart May 2021

Latewood Ring Width Reveals Ce 1734 Felling Dates For Walker House Timbers In Tupelo, Mississippi, Usa, Thomas W. Patterson, Grant L. Harley, David H. Holt, Raymond T. Doherty, Daniel J. King, Karen J. Heeter, Ashley L. Chavez, Alyssa C. Crowell, Ian M. Stewart

Faculty Publications

Dendroarchaeology is under-represented in the Gulf Coastal Plain region of the United States (US), and at present, only three published studies have precision dated a collection of 18th–19th-century structures. In this study, we examined the tree-ring data from pine, poplar, and oak timbers used in the Walker House in Tupelo, Mississippi. The Walker House was constructed ca. the mid-1800s with timbers that appeared to be recycled from previous structures. In total, we examined 30 samples (16 pines, 8 oaks, and 6 poplars) from the attic and crawlspace. We cross-dated latewood ring growth from the attic pine samples to the period …


Smokejumper Obituary: Michelotti, Frederick "Fred" (Cave Junction 1949), National Smokejumper Association May 2021

Smokejumper Obituary: Michelotti, Frederick "Fred" (Cave Junction 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Analysis Of Symptom Expressions And Transmission Rates Caused By The Plant Pathogen Phytophthora Ramorum On Native Chaparral Plants From The Genus Arctostaphylos, Bharati Gaonker May 2021

Analysis Of Symptom Expressions And Transmission Rates Caused By The Plant Pathogen Phytophthora Ramorum On Native Chaparral Plants From The Genus Arctostaphylos, Bharati Gaonker

Natural Sciences and Mathematics | Biological Sciences Master's Theses

Phytophthora ramorum is the causal agent of Sudden Oak death (SOD), ramorum dieback and ramorum leaf blight which affect both forest environments and nurseries. This oomycete pathogen has had a huge economic impact on the nursery and lumber industry. Forests in California have experienced substantial mortality of oaks affecting the forest dynamics and diversity. Our research investigates four native species and two ornamental cultivars of plants, which belong to the genus Arctostaphylos (manzanita) and are considered to be new hosts for P. ramorum in the chaparral ecosystem of California. Symptom expression and transmission rates were analyzed on Arctostaphylos glauca, …


Smokejumper Obituary: Mackey, Donald Kurt "Don" (Missoula 1987), National Smokejumper Association May 2021

Smokejumper Obituary: Mackey, Donald Kurt "Don" (Missoula 1987), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Dearstyne, Paul (North Cascades 1960), National Smokejumper Association May 2021

Smokejumper Obituary: Dearstyne, Paul (North Cascades 1960), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.