853 resultados para San Francisco Peninsula


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Appendices reprinted from various issues of University of California Publications in zoology, v.22.

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"Ratified by Vote of the People, May 26, 2898. Approved by the Legislature of the State, January 26, 1899. In Full Force and Effect, January 8, 1900. With Amendments adopted at Special Election December 4, 1902 )in effect February 5, 1930, and Amendments adopted November 5, 1907 (in effect November 22 and November 23, 1907)"

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"Ratified by vote of th People, March 26, 1931. Ratified by the Legislature of the State, April 13, 1931; In effect, January 8, 1932. Amended by vote of the people November 8, 1932. Ratified by the Legislature, January 12, 1933. Amended by vote of the People, November 6, 1934. Ratified by the Legislature, January 26, 1935. Amended by vote of the People, May 2, 1935. Ratified by the Legislature, May 17, 1935.

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Title Varies: 1888/89-The San Francisco Blue Book; 1890/91, San Francisco Blue Book and Pacific Coast élite Directory; 1891/92 Our Society Blue Book; 190 San Francisco Blue Book; 191-22, San Francisco Blue Book Residence and Club Address Directory: More

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We investigated controls on the water chemistry of a South Ecuadorian cloud forest catchment which is partly pristine, and partly converted to extensive pasture. From April 2007 to May 2008 water samples were taken weekly to biweekly at nine different subcatchments, and were screened for differences in electric conductivity, pH, anion, as well as element composition. A principal component analysis was conducted to reduce dimensionality of the data set and define major factors explaining variation in the data. Three main factors were isolated by a subset of 10 elements (Ca2+, Ce, Gd, K+, Mg2+, Na+, Nd, Rb, Sr, Y), explaining around 90% of the data variation. Land-use was the major factor controlling and changing water chemistry of the subcatchments. A second factor was associated with the concentration of rare earth elements in water, presumably highlighting other anthropogenic influences such as gravel excavation or road construction. Around 12% of the variation was explained by the third component, which was defined by the occurrence of Rb and K and represents the influence of vegetation dynamics on element accumulation and wash-out. Comparison of base- and fast flow concentrations led to the assumption that a significant portion of soil water from around 30 cm depth contributes to storm flow, as revealed by increased rare earth element concentrations in fast flow samples. Our findings demonstrate the utility of multi-tracer principal component analysis to study tropical headwater streams, and emphasize the need for effective land management in cloud forest catchments.