Global ETD Search

191	The role of decomposing plant litter in methylmercury cycling in a boreal poor fen / Branfireun, Marnie. January 2000 (has links) Decomposition and MeHg concentration were measured for Sphagnum fuscum, Sphagnum angustifolium and Chamaedaphne calyculata in a poor fen in the low boreal forest zone of the Canadian Shield. Litter bags were transplanted reciprocally into hummocks, hollows and lawns and retrieved after 1, 2, 3,11 and 15 months. / Mass losses follow the trend: Chamaedaphne calyculata >> S. angustifolium > S. fuscum. Between species differences were far more significant than differences between locations or depths, indicating that litter quality is the major control on decomposition. / McHg concentrations generally increased during decomposition, particularly near the water table: for C. calyculata up to 13000%, for the two Sphagnum mosses up to 500%, suggesting that decomposition stimulates mercury methylation or McHg scavenging. / The discovery of a high McHg substance on C. calyculata leaf surfaces (25 ng g-1) suggests that much plant MeHg data may by skewed by the presence of a biologically active 'film'. Peat mosses -- Ontario, Northern. Fens -- Ontario, Northern.
192	Material influences on offspring quality in northern water snakes, Nerodia sipedon / Kissner, Kelley J. January 1900 (has links) Thesis (Ph.D.) - Carleton University, 2002. / Includes bibliographical references (p. 172-190). Also available in electronic format on the Internet. Northern water snake. Snakes Snakes
193	The number and arrangement of the fibers forming the spinal nerves of the frog (Rana virescens) ... Hardesty, Irving, January 1899 (has links) Thesis (Ph. D.)--University of Chicago. / Cover title. Reprinted from the Journal of comparative neurology, vol. 9, no. 2, June 1899. Bibliography: p. 107-109. Northern leopard frog Spinal nerves.
194	The teak industry in North Thailand the role of a natural-resource-based export economy in regional development / Banasopit Mekvichai, January 1988 (has links) Thesis (Ph. D.)--Cornell University, 1988. / Typescript. Vita. Includes bibliographical references (leaves 295-309). Also issued in print. Teak Lumber trade Thailand, Northern
195	Feasibility of hard clam, Mercenaria mercenaria, culture in Grand Bay, Alabama Jackson, Jonathan R. Swann, David L., January 2008 (has links) (PDF) Thesis (M.S.)--Auburn University, 2008. / Abstract. Includes bibliographical references (p. 62-67). Northern quahog Clam culture Mariculture
196	Teachers' voices an evaluation of the certification track in Art at the University of Northern Iowa / Webster, David, Anderson, Tom, January 2005 (has links) Thesis (Ph. D.)--Florida State University, 2005. / Advisor: Dr. Tom Anderson, Florida State University, School of Visual Arts and Dance, Dept. of Art Education. Title and description from dissertation home page (viewed June 16, 2005). Document formatted into pages; contains ix, 449 pages. Includes bibliographical references.
197	The number and arrangement of the fibers forming the spinal nerves of the frog (Rana virescens) ... Hardesty, Irving, January 1899 (has links) Thesis (Ph. D.)--University of Chicago. / Cover title. Reprinted from the Journal of comparative neurology, vol. 9, no. 2, June 1899. Bibliography: p. 107-109. Northern leopard frog Spinal nerves.
198	The teak industry in North Thailand the role of a natural-resource-based export economy in regional development / Banasopit Mekvichai, January 1988 (has links) Thesis (Ph. D.)--Cornell University, 1988. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 295-309). Teak Lumber trade Thailand, Northern
199	Karl XII:s ryska fälttåg källstudier. Villius, Hans. January 1951 (has links) Akademisk avhandling--Lund. / Without thesis statement. Bibliography: p. [ix]-xv. Charles Northern War, 1700-1721.
200	Climatology and variability of Northern Hemisphere seasons Choi, Gwangyong. January 2007 (has links) Thesis (Ph. D.)--Rutgers University, 2007. / "Graduate Program in Geography." Includes bibliographical references (p. 208-225).

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