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 6 of 6 for “"Historical Populations"”.
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MOLECULAR AND MORPHOLOGICAL CONSEQUENCES OF POST-GLACIAL CONTACT AMONG LINEAGES OF NORTHERN SHORT-TAILED SHREWS (Blarina brevicauda) IN EASTERN NORTH AMERICA
… Pleistocene, advancing glacial ice fragmented populations of species, which restricted populations from expanding, ultimately inhibiting gene flow. As glaciers receded, expansion out of unglaciated-isolated areas was possible. In addition to glacial barriers, landscape features such as rivers …
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Conservation genetics of African elephants
… ivory trade, has reduced and fragmented elephant populations to a fraction of their former population size and range. It has therefore become necessary to develop and implement proactive and targeted conservation initiatives that aim at maintaining or restoring spatial and genetic connectivity …
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Thermal tolerance of alligator gar (Atractosteus spatula)
… lineage that dates back over 215 million years. Historically, alligator gar populations occurred in the Mississippi River basin from Illinois (USA) to Mexico. Alligator gar populations have been reduced or extirpated throughout much of their range, and introductory programs have been implemented …
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CHARACTERIZATION OF OYSTER-ASSOCIATED BIOGEOCHEMICAL PROCESSES IN OYSTER RESTORATION AND AQUACULTURE
… and subtidal oyster reefs to less than 15% of historical populations. Sustainability efforts to increase oysters in the Chesapeake Bay are of particular interest because oysters provide ecosystem services that may be applied as best management practices (BMPs) to reduce nitrogen inputs, which …
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Caratteristiche morfometriche della popolazione sarda dal Neolitico al XIX secolo: craniometria e statura
… to make comparisons with other past and recent populations. Sardinian skeletal series with radiocarbon dates or from culturally well-defined archeological contexts have been studied. The osteometric measurements have been taken on adult’s bone, who had completed growth and who did not present …
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Steroidhormone in bodengelagertem Skelettmaterial
Die Ursachen des explosionsartigen Bevölkerungsanstiegs im Mitteleuropa der zweiten Hälfte des 18. Jahrhunderts werden von Historikern lebhaft diskutiert. Unstrittig ist, dass er zeitgleich mit der Einführung der Kartoffel als Nahrungspflanze zu beobachten ist. Mindestens drei Hypothesen, welche …