Global ETD Search

61	Arid Lands Colloquia (1958-1959) January 1959 (has links) Contains papers from meetings held during the school year 1958-1959. Desert ecology -- Congresses. Arid regions -- Congresses. Arid regions climate.
62	Yield and physiological aspects of 17 varieties of corn grown in runoff farming Bassirirad, Hormoz. January 1984 (has links) (PDF) Thesis (M.S. - Soils, Water and Engineering)--University of Arizona, 1984. / Includes bibliographical references (leaves 63-68).
63	The effects of artificial watering points on the distribution and abundance of avifauna in an arid and semi-arid mallee environment Harrington, Rhidian. January 2002 (has links) Thesis (Ph. D.)--University of Melbourne, 2002. / Title from PDF title page (viewed on May 6, 2005). Includes bibliographical references (p. 108-125).
64	An ecological approach to the reclamation and improvement of arid rangelands using adapted fodder plants Venter, Daniel Barend. January 2005 (has links) Thesis (M. Sc. Agric(Pasture science))--University of Pretoria, 2005. / Includes bibliographical references. Available on the Internet via the World Wide Web.
65	36Cl Chronologies and ELA reconstructions from the northern boundary of the South American Arid Diagonal Thornton, Rachel M. 01 August 2019 (has links) No description available. Geology glacial geomorphology geology paleoclimate cosmogenic arid diagonal arid Andes
66	SCREENING ALFALFAS (MEDICAGO SATIVA-FALCATA-GLUTINOSA COMPLEX) FOR ROOT-PROLIFERATING TYPES UNDER A DESERT ENVIRONMENT. Rodrigues, Geraldo Helcio Seoldo, 1942- January 1984 (has links) No description available. Alfalfa -- Varieties. Arid regions agriculture.
67	Utilizing ground water contributions to resolve irrigation water shortage in Al-Hassa Alsaeedi, Abdullah Hassan January 1992 (has links) No description available. 630 Arid areas; Saudi Arabia
68	Spatial aspects of rainfall and the water budget in semi-arid West Africa Flitcroft, I. D. January 1989 (has links) No description available. 551.5 Rainfall in semi-arid tropics
69	Environmental effects in partitioning and development in groundnut Stirling, C. M. January 1988 (has links) No description available. 630 Arid area crop production
70	Application of Geochemical Tracers to Determine the Sources Contributing to Runoff at the Semi-arid Walnut Gulch Experimental Watershed, Arizona Nakolan, Laura, Nakolan, Laura January 2017 (has links) Prior observations by Koch (2005) suggest the presence of soil water mixed with current rainfall in runoff samples at the Kendall subwatershed of the USDA-Agricultural Research Service Walnut Gulch Experimental Watershed (WGEW). However, previous observations elsewhere in the WGEW have shown runoff to consist mainly of current precipitation (Goodrich et al., 2004). The disparity between the two studies demonstrates a need for continued research; therefore, this study uses isotope and solute geochemical tracers to determine the sources contributing to runoff at the Lucky Hills subwatershed of the WGEW during the 2015 monsoon season. A comparison of the stable isotopes of water (2H and 18O) in runoff to those in precipitation and soil water, shows that runoff and precipitation are distinct (p < 0.05), while soil water cannot be differentiated from runoff (p > 0.05). However, graphical representations of chloride and sulfate concentrations in the three water sources (precipitation, soil water and runoff), conclusively reveal that there is negligible soil water present in the runoff at Lucky Hills. Therefore, it is likely that there is no soil water mixing into the runoff at the Lucky Hills subwatershed, but more research is necessary to confirm these results. Because no runoff or soil water data was generated at the Kendall subwatershed during the 2015 monsoon season, continued research is necessary to draw conclusions about the sources contributing to runoff in the Kendall subwatershed, and in other portions of the Walnut Gulch Experimental Watershed. geochemical tracers runoff semi-arid

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