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Full-Text Articles in Life Sciences
Tb202: Composition And Biomass Of Forest Floor Vegetation In Experimentally Acidified Paired Watersheds At The Bear Brook Watershed In Maine, Peter Kenlan, G. B. Wiersma, A. S. White, I. J. Fernandez
Tb202: Composition And Biomass Of Forest Floor Vegetation In Experimentally Acidified Paired Watersheds At The Bear Brook Watershed In Maine, Peter Kenlan, G. B. Wiersma, A. S. White, I. J. Fernandez
Technical Bulletins
The percentage cover (abundance), frequency of occurrence, biomass, species richness, and species diversity of understory herbs was measured on a paired watershed ecosystem in eastern Maine, USA. This paired watershed site (Bear Brook Watershed in Maine, BBWM) has had the West Bear Brook Watershed treated bi-monthly with granular ammonium sulfate at a rate of 28.8 kg S ha-1 yr-1 and 25.2 kg N ha-1 yr-1 since 1989. East Bear Brook Watershed serves as the reference site. More than 100 plots were randomly located across the two watersheds. The data suggest that there is generally a lower frequency of occurrence of …
Tb197: Forest Biomass Estimates In Maine:Statewide, County, And Spatial, Kenneth M. Laustsen
Tb197: Forest Biomass Estimates In Maine:Statewide, County, And Spatial, Kenneth M. Laustsen
Technical Bulletins
In Maine, statewide biomass estimates have increased from 752 million dry tons in 1982 to 980 million dry tons in a 2003 estimate. These estimates are produced using Forest Inventory & Analysis (FIA) data collected during Maine’s periodic and now annualized inventory design. The Maine Forest Service began tracking and reporting on wood flows of biomass in 1986. For the last 20 years (1986–2005) the total annual harvesting of all products has ranged between 6 and 7 million cords, extracted from a standing inventory that is currently estimated to be 277 million cords. The objectives of this current study were …
Tb196: Temperature, Soil Moisture, And Streamflow At The Bear Brook Watershed In Maine (Bbwm), Ivan J. Fernandez, Joseph E. Karem, Stephen A. Norton, Lindsey E. Rustad
Tb196: Temperature, Soil Moisture, And Streamflow At The Bear Brook Watershed In Maine (Bbwm), Ivan J. Fernandez, Joseph E. Karem, Stephen A. Norton, Lindsey E. Rustad
Technical Bulletins
The Bear Brook Watershed in Maine is a whole-ecosystem chemical manipulation initiated in 1987 to study the effects of acid deposition on forests and surface waters. The focus of this research was to understand the biogeochemical response of watersheds with emphasis on chemistry and hydrology. In 2001 a program was initiated to provide more detailed measurements of temperature and moisture to examine critical linkages amongst chemical, biological, and physical processes that ultimately work together to define ecosystem function. The purpose of this publication is to provide data from the initial phase of soil temperature, air temperature, and soil moisture measurements …
Tb192: The Use Of Glyphosate Herbicides In Managed Forest Ecosystems And Their Effects On Non-Target Organisms With Particular Reference To Ants As Bioindicators, Kerry F.L. Guiseppe, Francis A. Drummond, Constance Stubbs, Stephen Woods
Tb192: The Use Of Glyphosate Herbicides In Managed Forest Ecosystems And Their Effects On Non-Target Organisms With Particular Reference To Ants As Bioindicators, Kerry F.L. Guiseppe, Francis A. Drummond, Constance Stubbs, Stephen Woods
Technical Bulletins
This publication reviews and synthesizes the results of many research studies designed to elucidate the ecological effects of the herbicide glyphosate used in forested landscapes. We have not intended our review to be an exhaustive review of all published studies (both laboratory and field investigations) concerned with faunal and floral glyphosate interactions and the environmental fate of glyphosate. We particularly focused on studies that had relevance to north temperate forest ecosystems and selected published investigations to incorporate into our review that cover a wide range of faunal and floral taxa that might be exposed to herbicides during applications.
Tb187: Forest Vegetation Monitoring In Acadia National Park, J. D. Eckhoff, G. B. Wiersma, J. A. Elvir
Tb187: Forest Vegetation Monitoring In Acadia National Park, J. D. Eckhoff, G. B. Wiersma, J. A. Elvir
Technical Bulletins
The goal of this report is to present the results of the vegetation component of the PRIMENet study at Acadia. The results include a classification of vegetation types and their locations within Cadillac Brook and Hadlock Brook watersheds; a synthesis of the primary and meta tree, sapling, and seedling data from the two study watersheds; and foliar chemical analyses using Acer rubrum and Picea rubens from Cadillac Brook and Hadlock Brook watersheds. This report provides the baseline information for long-term forest vegetation monitoring in the deciduous and coniferous forests in Cadillac Brook and Hadlock Brook watersheds. Ongoing interest and studies …
Tb153: A Long-Term Study Of An Oak Pine Forest Ecosystem: Techniques Manual For The Holt Research Forest, Jack W. Witham, Elizabeth H. Moore, Malcolm L. Hunter Jr., Alan J. Kimball
Tb153: A Long-Term Study Of An Oak Pine Forest Ecosystem: Techniques Manual For The Holt Research Forest, Jack W. Witham, Elizabeth H. Moore, Malcolm L. Hunter Jr., Alan J. Kimball
Technical Bulletins
The manual is a compilation of the study techniques used for the long-term forest ecosystem research project at the Holt Research Forest in Arrowsic, Maine, plus brief evaluations of each method's advantages and drawbacks. It is based on 12 years of work by a team of three university professors, an associate scientist who has lived on the forest since 1983, a research assistant, several graduate students, and numerous undergraduate field assistants. We hope this manual will be useful to other researchers planning, or already involved in, other forest ecosystem studies.