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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
The Effects Of Clearcutting And Glyphosate Herbicide Use On Parasitic Wasps In Maine Forests, Kristopher J. Abell
The Effects Of Clearcutting And Glyphosate Herbicide Use On Parasitic Wasps In Maine Forests, Kristopher J. Abell
Electronic Theses and Dissertations
Parasitic wasps (parasitoids) play an important role as natural enemies of insects and contribute substantially to world biodiversity (May, 1988), yet they have received relatively little attention outside of agricultural settings. Clearcut harvesting and herbicide (glyphosate) application are frequent and widespread disturbances in Maine forests that drastically alter the local environment. Parasitoids are particularly susceptible to disturbance for several reasons: 1) they are vulnerable to small changes in environmental conditions, 2) they occupy a high trophic level, and 3) many are host specific. However, there may be potential benefits of disturbance such as increased food resources (floral nectaries) and increased …
The Effects Of Forest Practices On A Maine Amphibian Community, David A. Patrick
The Effects Of Forest Practices On A Maine Amphibian Community, David A. Patrick
Electronic Theses and Dissertations
Changes in forest habitat have been linked to global declines in amphibian populations, but little research has been conducted into the mechanisms causing these declines. This study evaluated the effects of changes in forest habitat on the spatial distribution of a Maine amphibian community, focusing on juvenile wood frogs, Rana sylvatica. Juvenile wood frogs emerging from artificial ponds did not orient towards preferred habitat and a significant number of animals maintained the same directionality documented at the site from which larval individuals were collected. Abundance and habitat use differed among adults of 9 species of amphibians in a replicated …
Effects Of Forest Management On Click Beetle (Coleoptera: Elateridae) Assemblages In The Acadian Forest Of Maine, Shelly L. Thomas
Effects Of Forest Management On Click Beetle (Coleoptera: Elateridae) Assemblages In The Acadian Forest Of Maine, Shelly L. Thomas
Electronic Theses and Dissertations
Click beetle (Coleoptera: Elateridae) assemblages were examined in three experiments in the Acadian forest of Maine. First, I used flight intercept traps to compare Elaterid assemblages in stands that developed after clearcut, shelterwood, and selection harvests. Click beetle richness was highest in stands managed under a selection system and lowest in stands regenerated using the clearcut method. The abundance of click beetle species was lower in stands managed by clearcutting than in stands managed using the shelterwood and selection methods. Hardwood basal area was the best environmental predictor for both species richness and species abundance. Second, I examined whether Elaterid …
Forging A Common Vision For Maine’S North Woods, Robert J. Lilieholm
Forging A Common Vision For Maine’S North Woods, Robert J. Lilieholm
Maine Policy Review
Robert Lilieholm takes stock of the challenges and opportunities facing Maine’s North Woods, the largest undeveloped forested block in the eastern United States. In the face of changing ownership patterns and development pressures, there is lively debate over current land use policies and trends. Lilieholm suggests that a broader, regional vision for the North Woods might better serve the long-term interests of both the area’s forests and its struggling communities.
Alternative Large-Scale Conservation Visions For Northern Maine: Interviews With Decision Leaders In Maine, Elizabeth Dennis Baldwin, Laura S. Kenefic, Will F. Lapage
Alternative Large-Scale Conservation Visions For Northern Maine: Interviews With Decision Leaders In Maine, Elizabeth Dennis Baldwin, Laura S. Kenefic, Will F. Lapage
Maine Policy Review
Based on confidential interviews with 21 decision leaders in Maine, Elizabeth Baldwin, Laura Kenefic, and Will LaPage examine the complexity of the conflicts over alternate visions for large-scale conservation in Maine. Exploring models that may be useful for policymakers grappling with competing values for Maine’s forests, they present four alternatives: national forests, new U.S. forest service models, forest heritage areas, and the British national park model. The authors found that the leaders interviewed agreed about the need for some level of conservation, but did not completely agree on how this might happen and where the decision-making power should lie.
Are The Economics Of A Sustainable Maine Forest Sustainable?, Mike Levert, Charles S. Colgan, Charles Lawton
Are The Economics Of A Sustainable Maine Forest Sustainable?, Mike Levert, Charles S. Colgan, Charles Lawton
Maine Policy Review
Mike LeVert, Charles Colgan and Charles Lawton discuss the transformation of the economic environment of Maine’s forests over the past two decades. Paper companies have sold most of their holdings; residential and conservation demand for land has increased; forestland prices have skyrocketed; and new classes of landowners have different strategies, objectives, and time horizons than the old industrial landowners. The authors believe that management of Maine’s forests must now address changes in the economic environment with the same intensity as threats such as the spruce budworm were addressed if we are to keep Maine’s forests as forests.