Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Vertebrata"”.
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Evolution of Axial Skeleton Diversity across Reptilia
… of axial skeleton diversity across Vertebrata have focused on the origin of mammals, inferring uniquely complex axial skeleton morphologies across Mammalia. However, morphometric analysis here reveals multiple independent gains and losses of regionalization across Reptilia, …
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A study of lipids from animal skin secretions
… glands has been worked out and the glands of the vertebrata are recognised as belonging to three main types: - holocrine, eccrine and apocrine glands. In man the holocrine glands are referred to as sebaceous and the eccrine as sudoriferous or sweat glands. These terms are often used also for …
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A New Quantitative Method for the Taxonomic Identification of Tetrapods
The rarity of good fossil samples throughout geologic time frequently makes fossil identification difficult. This dissertation presents a new, multivariate, statistically validated method to identify tetrapods based on quantification of the shapes of microstructural features in cortical bone of the …
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Tree cavity abundance and nest site selection of cavity nesting birds in a natural boreal forest of West Khentey, Mongolia
Höhlenbrütende Vogelarten stellen einen bedeutenden Anteil vieler Waldvogelgemeinschaften. Wegen ihrer engen Bindung an entsprechende Habitatstrukturen sind sie sehr empfindlich gegenüber Veränderungen der Waldstruktur. Daher werden sie als Indikatoren für Habitatqualitäten und Vogeldiversität …
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Die ökologische Bedeutung von Hecken für Vögel
Hecken sind kulturhistorisch und landschaftsästhetisch bedeutsame Elemente unserer Kulturlandschaft und sind in Ermangelung von natürlichen Lebensräumen für viele Tier- und Pflanzenarten wichtige Lebensräume geworden. Die Bedeutung von Hecken für Vögel als Rast- und Schlafplatz, Schutz- und …