Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Nitrogen (2)
- Antagonism (1)
- Aspen (1)
- Balsam fir (1)
- Beech bark disease (1)
-
- Carbon (1)
- Cedar (1)
- Climate (1)
- Cryptococcus fagisuga (1)
- Dieback (1)
- Disturbance (1)
- Earthworms (1)
- Eastern hemlock (1)
- Ectomycorrhiza (1)
- Endophyte (1)
- Fertilization (1)
- Garoua (1)
- Kinross (1)
- Land use/cover (1)
- Local management (1)
- Moose (1)
- Neonectria faginata (1)
- Northern hardwoods (1)
- Nursery (1)
- Peatland (1)
- Pre-European (1)
- Sapstreak (1)
- Senna obtusifolia (1)
- Soil Fertility (1)
- Spruce (1)
Articles 1 - 8 of 8
Full-Text Articles in Entire DC Network
Beech Bark Disease Distribution And Resistance In Michigan And Fungal Endophyte Ecology Of Resistant And Susceptible Beech (Fagus Grandifolia Ehrh.), Rachel E. Griesmer-Zakhar
Beech Bark Disease Distribution And Resistance In Michigan And Fungal Endophyte Ecology Of Resistant And Susceptible Beech (Fagus Grandifolia Ehrh.), Rachel E. Griesmer-Zakhar
Dissertations, Master's Theses and Master's Reports - Open
Beech bark disease (BBD), a non-native association of the fungal pathogen Neonectria faginata and the beech scale insect Cryptococcus fagisuga, has dramatically affected American beech within North American forests. To monitor the spread and effects of BBD in Michigan, a network of forest health monitoring plots was established in 2001 following the disease discovery in Ludington State Park (Mason County). Forest health canopy condition and basic forestry measurements including basal area were reassessed on beech trees in these plots in 2011 and 2012. The influence of bark-inhabiting fungal endophytes on BBD resistance was investigated by collecting cambium tissue from …
The Role Of Ectomycorrhizal Fungi On Fertilized And Unfertilized Nursery Grown White Spruce, Alistair James Henry Smith Ii
The Role Of Ectomycorrhizal Fungi On Fertilized And Unfertilized Nursery Grown White Spruce, Alistair James Henry Smith Ii
Dissertations, Master's Theses and Master's Reports - Open
Nursery grown seedlings are an essential part of the forestry industry. These seedlings are grown under high nutrient conditions caused by fertilization. Though grown in a controlled environment, symbionts such as ectomycorrhizal fungi (EcMF) are often found in these conditions. To examine the effects of EcMF in these conditions, colonized Picea glauca seedlings were collected from Toumey Nursery in Watersmeet, MI. After collection, the EcMF present were morphotyped, and seedlings with different morphotypes were divided equally into two treatment types- fertilized and unfertilized. Seedlings received treatment for one growing season. After that time, seedlings were collected, ectomycorrhizas identified using morphotyping …
Assessment Of Aspen And Northern Hardwoods Extent In Thirty Three Counties Of Upper/Lower Michigan, Sara Alian
Assessment Of Aspen And Northern Hardwoods Extent In Thirty Three Counties Of Upper/Lower Michigan, Sara Alian
Dissertations, Master's Theses and Master's Reports - Open
The importance of the United States' wood and wood byproducts as biomass feedstocks is increasing as the concern about security and sustainability of global energy production continues to rise. Thus, second generation woody feedstock sources in Michigan, e.g., hybrid poplar and hybrid willow (Populus spp.), are viewed as a potential source of biomass for the proposed biofuel ethanol production plant in Kinross, MI. It is important to gain an understanding of the spatial distribution of current feedstock sources, harvesting accessibility via the transportation infrastructure and land ownerships in order to ensure long-term feedstock extent. This research provides insights …
Biomass Fuel-Briquettes And Improved Stoves In Dinsho, Ethiopia, Brian W. Barbre
Biomass Fuel-Briquettes And Improved Stoves In Dinsho, Ethiopia, Brian W. Barbre
Dissertations, Master's Theses and Master's Reports - Open
This report is a study of the development and implementation of a biomass fuel briquette and improved stove project in the highlands of Ethiopia. The primary goal of the project was to determine if the introduction of an improved stove would affect the acceptability of fuel briquettes. The secondary goal was to establish briquette and improved stove manufacturing associations in Dinsho and Rira towns. Two problems encountered during the project were cultural differences in material valuation, and difficulty working with local administrative frameworks and multi-organization communication difficulties. Both briquettes and improved stoves received positive feedback from respondents. Survey data indicated …
Carbon In The Peatlands In The Great Lakes Region, Cassandra A. Ott
Carbon In The Peatlands In The Great Lakes Region, Cassandra A. Ott
Dissertations, Master's Theses and Master's Reports - Open
Peatlands cover only ~3% of the global land area, but store ~30% of the worlds' soil carbon. There are many different peat types that store different amounts of carbon. Most inventories of carbon storage in northern peatlands have been conducted in the expansive Sphagnum dominated peatlands. Although, northern white cedar peatlands (NW cedar, Thuja occidentalis L.) are also one of the most common peatland types in the Great Lakes Region, occupying more than 2 million hectares. NW cedar swamps are understudied, due in part to the difficulties in collection methods. General lack of rapid and consistent sampling methods has also …
Spatial And Temporal Patterns In Ungulate-Ecosystem Interactions, Bryan D. Murray
Spatial And Temporal Patterns In Ungulate-Ecosystem Interactions, Bryan D. Murray
Dissertations, Master's Theses and Master's Reports - Open
Ungulates are important components of a variety of ecosystems worldwide. This dissertation integrates aspects of ungulate and forest ecology to increase our understanding of how they work together in ways that are of interest to natural resource managers, educators, and those who are simply curious about nature. Although animal ecology and ecosystem ecology are often studied separately, one of the general goals of this dissertation is to examine how they interact across spatial and temporal scales. Forest ecosystems are heterogeneous across a range of scales. Spatial and temporal habitat use patterns of forest ungulates tend to be congregated in patches …
Local Use And Management Of Tasba (Senna Obtusifolia) In The Traditional Food System Of Sanguere Paul, North Cameroon, Mary E. Snyder
Local Use And Management Of Tasba (Senna Obtusifolia) In The Traditional Food System Of Sanguere Paul, North Cameroon, Mary E. Snyder
Dissertations, Master's Theses and Master's Reports - Open
The purpose of this study is to examine the importance of the wild edible weed tasba (Senna obtusifolia) in Sanguéré Paul, Cameroon by examining how households use and manage the plant. This study found that local management of tasba is minimal compared to other traditional vegetables. Tasba was collected most frequently from en brousse or the communal, fallowed land which is often too degraded for traditional field crops to grow. Women subsistence farmers were closely involved with tasba as they are the ones responsible for food production within the family. Socioeconomic differences between women affects how they manage tasba and …
Evaluation Of Sugar Maple Dieback In The Upper Great Lakes Region And Development Of A Forest Health Youth Education Program, Tara L. Bal
Dissertations, Master's Theses and Master's Reports - Open
Acer saccharum Marsh., is one of the most valuable trees in the northern hardwood forests. Severe dieback was recently reported by area foresters in the western Upper Great Lakes Region. Sugar Maple has had a history of dieback over the last 100 years throughout its range and different variables have been identified as being the predisposing and inciting factors in different regions at different times. Some of the most common factors attributed to previous maple dieback episodes were insect defoliation outbreaks, inadequate precipitation, poor soils, atmospheric deposition, fungal pathogens, poor management, or a combination of these. The current sugar maple …