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Full-Text Articles in Life Sciences
Near-Surface Soil Nitrogen And Vegetation Response To Invasive Emerald Ash Borer In Forested Black Ash Wetlands Of The Western Upper Peninsula, Michigan, Usa, Daniel A. Beyer
Dissertations, Master's Theses and Master's Reports
Invasive emerald ash borer (EAB) (Agrilus planipennis Fairmaire) poses an imminent threat to the structure and function of North American hardwood forests, particularly black ash (Fraxinus nigra Marshall), and alters the hydrologic and ecological services of their wetlands. Black ash trees regularly grow in seasonally saturated soils and are responsible for hydrologic regulation and nutrient cycling. In this study, a gradient of black ash wetlands impacted by EAB were monitored to assess vegetation changes and near-surface soil nitrogen availability. Vegetation community changes were intertwined with nitrogen cycle disturbances following EAB infestation. As black ash died and fell to …
Response Of Black Ash Wetland Gaseous Soil Carbon Fluxes To A Simulated Emerald Ash Borer Infestation, Matthew Van Grinsven, Joseph Shannon, Nicholas Bolton, Joshua Davis, Nam Jin Noh, Joseph Wagenbrenner, Et Al.
Response Of Black Ash Wetland Gaseous Soil Carbon Fluxes To A Simulated Emerald Ash Borer Infestation, Matthew Van Grinsven, Joseph Shannon, Nicholas Bolton, Joshua Davis, Nam Jin Noh, Joseph Wagenbrenner, Et Al.
Michigan Tech Publications
The rapid and extensive expansion of emerald ash borer (EAB) in North America since 2002 may eliminate most existing ash stands, likely affecting critical ecosystem services associated with water and carbon cycling. To our knowledge, no studies have evaluated the coupled response of black ash (Fraxinus nigra Marsh.) wetland water tables, soil temperatures, and soil gas fluxes to an EAB infestation. Water table position, soil temperature, and soil CO2 and CH4 fluxes were monitored in nine depressional headwater black ash wetlands in northern Michigan. An EAB disturbance was simulated by girdling (girdle) or felling (ash-cut) all black ash …
Water Level Controls On Sap Flux Of Canopy Species In Black Ash Wetlands, Joseph Shannon, Matthew Van Grinsven, Joshua Davis, Nicholas Bolton, Nam Jin Noh, Thomas Pypker, Randall K Kolka
Water Level Controls On Sap Flux Of Canopy Species In Black Ash Wetlands, Joseph Shannon, Matthew Van Grinsven, Joshua Davis, Nicholas Bolton, Nam Jin Noh, Thomas Pypker, Randall K Kolka
Michigan Tech Publications
Black ash (Fraxinus nigra Marsh.) exhibits canopy dominance in regularly inundated wetlands, suggesting advantageous adaptation. Black ash mortality due to emerald ash borer (Agrilus planipennis Fairmaire) will alter canopy composition and site hydrology. Retention of these forested wetlands requires understanding black ash’s ecohydrologic role. Our study examined the response of sap flux to water level and atmospheric drivers in three codominant species: black ash, red maple (Acer rubrum L.), and yellow birch (Betula alleghaniensis Britt.), in depressional wetlands in western Michigan, USA. The influence of water level on sap flux rates and response to vapor pressure deficit (VPD) was tested …
Methods To Improve Survival And Growth Of Planted Alternative Species Seedlings In Black Ash Ecosystems Threatened By Emerald Ash Borer, Nicholas Bolton, Joseph Shannon, Joshua Davis, Matthew J. Van Grinsven, Nam Jin Noh, Shon Schooler, Randall K Kolka, Thomas Pypker, Joseph Wagenbrenner
Methods To Improve Survival And Growth Of Planted Alternative Species Seedlings In Black Ash Ecosystems Threatened By Emerald Ash Borer, Nicholas Bolton, Joseph Shannon, Joshua Davis, Matthew J. Van Grinsven, Nam Jin Noh, Shon Schooler, Randall K Kolka, Thomas Pypker, Joseph Wagenbrenner
Michigan Tech Publications
Emerald ash borer (EAB) continues to spread across North America, infesting native ash trees and changing the forested landscape. Black ash wetland forests are severely affected by EAB. As black ash wetland forests provide integral ecosystem services, alternative approaches to maintain forest cover on the landscape are needed. We implemented simulated EAB infestations in depressional black ash wetlands in the Ottawa National Forest in Michigan to mimic the short-term and long-term effects of EAB. These wetlands were planted with 10 alternative tree species in 2013. Based on initial results in the Michigan sites, a riparian corridor in the Superior Municipal …
Calibration Of Electric Moisture Meters For Jack And Red Pine, Black Spruce, Paper Birch, Black Ash, Eastern Hemlock, And Bigtooth Aspen, W.L. James
Aspen Bibliography
Direct current electrical resistance and radio frequency power absorption indexes were obtained at a temperature of 80°F, and at moisture content values from about 6 percent to bear the fiber saturation point for seven native American species: jack pine (Pinus banksiana), black spruce (Picea mariana), paper birch (Betula papyrifera), black ash (Fraxinus nigra), eastern hemlock (Tsuga canadensis), bigtooth aspen (Populus grandidentata), and red pine (Pinus resinosa).