Jürgen Schwörbel: Einführung in die Limnologie. UTB für Wissenschaft: Uni-Taschenbücher 31. — 7., vollst. überarb. Auflage. 387 pp., 50 tabs., 1007 Lit., Glossar. Sachverz. Stuttgart, Jena: G. Fischer 1993. ISBN 3–437–20497–1; kart. DM 29.80
✍ Scribed by P. Mauersberger
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 104 KB
- Volume
- 80
- Category
- Article
- ISSN
- 1434-2944
No coin nor oath required. For personal study only.
✦ Synopsis
the waves are the example of sessile organisms and shrimps, beetles, fish and marine mammals are among the aquatic examples of swimmers. Chapter 8 is centered on the theoretical topics of velocity gradients and boundary layers. In the next chapter this is applied to various organisms of the torrential fauna, to colonial organisms with common jets like in ascidians or bryozoan colonies, to motion in thermally layered lakes. Chapter 10 about making and using vortices shows the forces operating during feeding of the stalked ciliate Vorticellu. Simulium and mayfly larvae. The physical forces operating during lifts, gliding and soaring of birds, fishes, sharks and whales and enabling specific biological adaptations like the one in the medusa by-the-wind-sailor (Velellu velella) are treated in Chapter 11, Various kinds of flying and swimming as well as tricks used by different organisms are the next subject. Flow within pipes and other structures in Chapter 12 are the basis for the next chapters on internal flows in organisms (including flows in worm tubes) and on flow at low REYNOLDS numbers where sinking of phytoplankton, movement of organisms with ciliated appendages and wings as well as filtration of suspension feeders are analyzed. Unsteady flow in Chapter 16 is a more difiicult topic, adding to the solutions in earlier chapters treating steady flows additional explanations of the behavior in unsteady flow situations. The specific problems of flow at fluid-fluid interfaces exemplified by swimming of birds on the water surface and explanation of the movements of various insects on water surface represent chapter 17. The last chapters named "Do it yourself' is a typical example of wittiness of the author that penetrates the book. It is not, as you would expect, the guideline for exercises but rather an incentive to the reader to go more deeply into the subject,
The book is clearly written and has plenty to say to aquatic biologists dealing with shapes, structures and functions of individual organisms and their evolution.
M. STRASKRABA