Body Size: The Structure and Function of Aquatic Ecosystems by Alan G. Hildrew, David G. Raffaelli, Ronni Edmonds-Brown

By Alan G. Hildrew, David G. Raffaelli, Ronni Edmonds-Brown

Ecologists have lengthy struggled to foretell beneficial properties of ecological structures, similar to the numbers and variety of organisms. the big variety of physique sizes in ecological groups, from tiny microbes to massive animals and vegetation, is rising because the key to prediction. in keeping with the connection among physique dimension and lines resembling organic charges, the physics of water and the quantity of habitat on hand, we are able to comprehend styles of abundance and variety, biogeography, interactions in meals webs and the impression of fishing, including as much as a possible 'periodic desk' for ecology. impressive development at the unravelling, describing and modelling of aquatic nutrition webs, revealing the basic function of physique measurement, makes a booklet emphasising marine and freshwater ecosystems really apt. the following, the significance of physique dimension is tested at a number scales that would be of curiosity to specialist ecologists, from scholars to senior researchers.

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Sample text

Lengths of suspension feeders vary over five orders of magnitude, from singlecelled protists to baleen whales, while the Reynolds number of such organisms in general ranges between Re % 10À6 (bacteria) and Re % 108 (large whales), or 14 orders of magnitude (Nachtigall, 2001). This provides a dramatic range of conditions in which suspension feeders operate, and leads to an array of adaptations to this feeding mode. Despite such large variations in body size, aerosol theory co-opted from engineering (Rubenstein & Koehl, 1977) suggests that there are only five inclusive mechanisms by which particles can encounter collecting elements: (i) direct interception, (ii) inertial impaction, (iii) gravitational deposition, (iv) diffusional deposition and (v) electrostatic attraction.

Koehl, M. A. R. (1993). Hairy little legs: feeding, smelling, and swimming at low Reynolds numbers. Contemporary Mathematics, 141, 33–64. Koehl, M. A. R. (1995). Fluid flow through hair-bearing appendages: feeding, smelling and swimming at low and intermediate Reynolds numbers. In Biological Fluid Dynamics, ed. C. P. Ellington and T. J. Pedley. Cambridge: The Company of Biologists Limited, pp. 157–182. Koehl, M. A. R. (1996). When does morphology matter? Annual Review of Ecology and Systematics, 27, 501–542.

R. (1983). The morphology and performance of suspension-feeding appendages. Journal of Theoretical Biology, 105, 1–11. Koehl, M. A. R. (1993). Hairy little legs: feeding, smelling, and swimming at low Reynolds numbers. Contemporary Mathematics, 141, 33–64. Koehl, M. A. R. (1995). Fluid flow through hair-bearing appendages: feeding, smelling and swimming at low and intermediate Reynolds numbers. In Biological Fluid Dynamics, ed. C. P. Ellington and T. J. Pedley. Cambridge: The Company of Biologists Limited, pp.

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