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× An einem Wintertag schwingt sich Dorothee Fleck auf ihr Fahrrad und beginnt eine spektakuläre Weltreise. Die alleinreisende Frau radelt innerhalb von 127 Wochen durch 26 Länder und legt dabei stolze 61.140 Kilometer zurück. Dorothee Fleck folgt auf ihrer Reise zunächst der Donau bis an das Schwarze Meer Als Frau allein mit dem Fahrrad um die Welt 16,80 
16,80 
× Honighäuschen (Bonn) - These proceedings deal with the relationship between species composition of freshwater phytoplankton and the trophic gradient. Particular regard is paid to the composite question, what lives where and why? Overview papers report the state of the art and suggest that the trophic spectrum appears to be a probabilistic outcome of several dimensions of variability that impinge upon phytoplankton species selection. Studies on community structure span all latitudes from those of Antarctica to equatorial Brazil, and also include reports on light and nutrient gradients, pH and fish-stock effects on species composition. Seasonal and longterm phytoplankton dynamics in lakes of varying trophic status are also considered. Finally, studies on the taxonomy and autoecology of some groups (e.g. Volvocales, Chrysophytes and Euglenophytes) living at the extremes of the trophic spectrum contribute to our knowledge of this usually neglected phytoplankton. This is the first time that a book covers such a topic, and it will prove an excellent source of information to anyone working on phytoplankton ecology and ecological indicators. Limnologists in general, algologists and the technical staff at water authorities will all benefit by reading this book. Phytoplankton and Trophic Gradients 213,99 
213,99 

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