Global ETD Search

1	Exploring the role of public awareness in household response to hemlock woolly adelgid : an averting behavior model / Byrne, Brenna Shawn, Bell, Kathleen P. January 2004 (has links) Thesis (M.S.) in Resource Economics and Policy--University of Maine, 2004. / Includes vita. Includes bibliographical references (leaves 133-134). Hemlock woolly adelgid.
2	Relationships between balsam woolly adelgid damage, radial growth, climate and stand characteristics in eastern Maine / Kanoti, Allison M, January 2006 (has links) (PDF) Thesis (M.S.) in Forestry--University of Maine, 2006. / Includes vita. Includes bibliographical references (leaves 53-58). Balsam woolly adelgid. Fir
3	Exploring the Role of Public Awareness in Household Response to Hemlock Woolly Adelgid: An Averting Behavior Model Byrne, Brenna Shawn January 2004 (has links) (PDF) No description available. Hemlock woolly adelgid
4	Some effects of host tree nutrition on establishment and survival of the balsam woolly aphid, Adelges picease (Ratz) Carrow, Justin Roderick January 1967 (has links) A greenhouse study was undertaken to investigate some relationships between nutrition of the host tree, Abies amabilis, as influenced by soil fertility and nitrogen fertilizers, and biology of the balsam woolly aphid, Adelges piceae (Ratz.). Seedlings were reared in two soil regimes - nutrient-deficient mineral soil and enriched humic soil. All trees were infested with aphid larvae, and observations made to determine the influence of soil fertility on the establishment rate of larvae on host trees. Subsequently, groups of 10 trees were treated with foliar nutrients, using ammonium nitrate and urea in various concentrations. The establishment rate of larvae on humic soil host trees was 2.5 times greater than on mineral soil trees. In addition, growth rate of the aphid population on humic soil trees was 37% greater than on mineral soil trees over a four week period. Soil fertility also influenced the life history of the insect. One foliar nutrient adversely affected the aphid population. Over a 10 week period, the aphid population on trees treated with 1% ammonium nitrate decreased by 23%, whereas the control population Increased 30.9%. It is postulated that this foliar treatment manifests its adverse effect primarily by inhibiting initial settling of larvae on the host trees. This inhibition may be related to fertilizer-induced alterations in the amino acid composition of feeding tissue. / Science, Faculty of / Zoology, Department of / Graduate Aphids Balsam woolly adelgid
5	Predators of hemlock woolly adelgid in northwestern Oregon / Byrkit, Maggie K. January 2004 (has links) Thesis (M.S.)--Oregon State University, 2005. / Printout. Includes bibliographical references (leaves 45-49). Also available on the World Wide Web.
6	Using dendrochronology to understand the response of eastern hemlock to past stresses and its current status in southern Maine / DeMaio, Sophia. January 2008 (has links) Thesis (M.S.) in Forestry--University of Maine, 2008. / Includes vita. Includes bibliographical references (leaves 59-67). Eastern hemlock Hemlock woolly adelgid
7	Site characterization of hemlock stands at Allegheny National Forest Farcas, Daniel, January 2010 (has links) Thesis (M.S.)--West Virginia University, 2010. / Title from document title page. Document formatted into pages; contains x, 78 p. : ill. (some col.), col. maps. Includes abstract. Includes bibliographical references. Tsuga Tsuga Hemlock woolly adelgid.
8	Detecting hemlock woolly adelgid (Adeleges tsugae) impacts on eastern hemlock (Tsuga canadensis) stands in the Quabbin Reservoir Watershed using AIMS-1 imagery / Ayars, Alicia T. January 2005 (has links) (PDF) Undergraduate honors paper--Mount Holyoke College, 2005. Dept. of Earth and Environment. / Includes bibliographical references (leaves 64-67). Eastern hemlock Hemlock woolly adelgid
9	Biological control and cold-hardiness of the hemlock woolly adelgid (Homoptera: Adelgidae). Butin, Elizabeth E. 01 January 2003 (has links) (PDF) No description available.
10	Predators associated with hemlock woolly adelgid (Hemiptera: Adelgidae) infested western hemlock in the Pacific Northwest / Kohler, Glenn R. January 1900 (has links) Thesis (M.S.)--Oregon State University, 2007. / Printout. Includes bibliographical references. Also available on the World Wide Web.

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