Historically, the giant panda was widely distributed from northern China to southwestern Asia [1]. As a result of range contraction and fragmentation, extant individuals are currently restricted to fragmented mountain ranges on the eastern margin of the Qinghai-Tibet plateau, where they are distributed among three major population clusters [2]. However, little is known about the genetic consequences of this dramatic range contraction.
View Article and Find Full Text PDFThe giant panda was widely distributed in China and south-eastern Asia during the middle to late Pleistocene, prior to its habitat becoming rapidly reduced in the Holocene. While conservation reserves have been established and population numbers of the giant panda have recently increased, the interpretation of its genetic diversity remains controversial. Previous analyses, surprisingly, have indicated relatively high levels of genetic diversity raising issues concerning the efficiency and usefulness of reintroducing individuals from captive populations.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
August 2004
A simple, rapid, microsampling method for the determination of zinc in relish by derivative FAAS is described. The influences of microsampling volume and other factors are discussed. The detection limit and sensitivity of the proposed method are 0.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
December 2002
A new microsample-pulse method is described for the determination of copper, iron and zinc by ion exchange microcolumn preconcentration-derivative flame atomic absorption spectrometry. The optimum conditions concerning the sensitivity were studied. The method was applied to the determination of Cu, Fe and Zn in tapwater with sensitivity being 0.
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