منابع مشابه
Topography, energy and the global distribution of bird species richness.
A major goal of ecology is to determine the causes of the latitudinal gradient in global distribution of species richness. Current evidence points to either energy availability or habitat heterogeneity as the most likely environmental drivers in terrestrial systems, but their relative importance is controversial in the absence of analyses of global (rather than continental or regional) extent. ...
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متن کاملMoiré topography.
Contour moiré pictures with good contrast of a full size living body are now available. Construction problems, performance, and accuracy of large instruments are experimentally studied. Techniques to minimize the drawbacks of the moiré contouring are developed. The system has been proved to be ready for practical application to full size living bodies.
متن کاملRisk Topography
The aim of this paper is to conceptualize and design a risk topography that outlines a data acquisition and dissemination process that informs policy markers, researchers and market participants about systemic risk. Our approach emphasizes that systemic risk (i) typically builds up in the background before materializing in a crisis and (ii) is determined by market participants’ response to vari...
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The evolution of birds is thought to have begun in the Jurassic Period, with the earliest birds derived from theropod dinosaurs. Birds are categorized as a biological class, Aves. The earliest known species of class Aves is Archaeopteryx lithographica, from the Late Jurassic period, though Archaepteryx is not commonly considered to have been a true bird. Modern phylogenies place birds in the di...
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ژورنال
عنوان ژورنال: The Bulletin of the Japanese Bird Banding Association
سال: 1986
ISSN: 0914-4307,2187-2481
DOI: 10.14491/jbba.ar010