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Akkumulation und Weitergabe von Schwermetallen aus belasteten Böden in systematisch kultivierten Völkern der dunklen Erdhummel Bombus Terrestris

Akkumulation und Weitergabe von Schwermetallen aus belasteten Böden in systematisch kultivierten Völkern der dunklen Erdhummel Bombus Terrestris

          
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About the Book

Inhaltsangabe: Einleitung: Schwermetalle finden ihren natürlichen Ursprung im anstehenden Tiefengestein bzw. im Gestein unter der Bodendeckschicht. Je nach Art und Morphologie des Gesteins, kann es durch dessen Verwitterung auf natürlichem Wege zu ungewöhnlich hohen Schwermetallgehalten im Boden kommen. Schwermetalle werden seit frühester Menschheit genutzt, um Gebrauchsgegenstände zu fertigen. Bei der Erschließung und dem Abbau der Schwermetalle fallen große Mengen von Abraum an. Die Entsorgung dieses Abraums führt zur Entstehung anthropogen veränderter Böden die z.T. sehr hohe Schwermetallbelastungen aufweisen. Die Überwachung und Erfassung der Belastung von Böden, der Luft und der Gewässer mittels biologischer Organismen oder ganzer biologischer Systeme im Rahmen des Biomonitorings gewinnt immer mehr an Bedeutung. So wurden z.B., Lumbricus terrestris L. (Regenwurm) und Dreissena polymorpha Fall. (Dreikantmuschel) schon vielfach eingesetzt, um die Schwermetallbelastung neben stark befahrenen Autostraßen bzw., in Süßgewässern zu überwachen. Unter den Hymenopteren stellte sich die Honigbiene Apis mellifera L. als geeigneter Bioindikator zur Erfassung von Schadstoffbelastungen der Umwelt heraus. So stellte DRESCHER eine Liste von Gründen auf, welche die Eignung und die Vorteile der Honigbiene im Biomonitoring besonders verdeutlichen. Der Einsatz von Apis mellifera beschränkte sich in der Regel auf die Untersuchung der Belastung eines Gebietes durch Aerosole. BROMENSHENK konnte nachweisen, dass die Populationsdynamik und der Honigertrag von Apis mellifera negativ mit dem Schadstoffgehalt der Bienen korreliert ist. Zusammenfassung: In der vorliegenden Arbeit wurde am Beispiel von vier Schwermetallen (Cd, Pb, Zn, Cu) untersucht, ob umweltbelastende Stoffe aus entsprechend belasteten Böden, über die Blütenprodukte Pollen und Nektar der anzutreffenden Vegetation von den Arbeiterinnen eines Volkes der Dunklen Erdhummel Bombus terrestris L. aufgenommen werden. Weiterhin


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Product Details
  • ISBN-13: 9783838607597
  • Publisher: Diplom.de
  • Binding: Paperback
  • Language: German
  • Returnable: N
  • Spine Width: 8 mm
  • Width: 148 mm
  • ISBN-10: 3838607597
  • Publisher Date: 27 Mar 1998
  • Height: 210 mm
  • No of Pages: 138
  • Series Title: German
  • Weight: 190 gr


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Akkumulation und Weitergabe von Schwermetallen aus belasteten Böden in systematisch kultivierten Völkern der dunklen Erdhummel Bombus Terrestris
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