Notes on ecotone attributes and functions |
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Authors: | Jurek Kolasa Maciej Zalewski |
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Institution: | (1) Netherlands Institute of Ecology, Centre for Estuarine and Coastal Research, Vierstraat 28, NL-4401 EA Yerseke, The Netherlands |
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Abstract: | We attempt to identify general properties of ecotones. Earlier attempts to do so encountered difficulties resulting from contradictory conceptions of ecotones. Thus, we begin with and center our discussion on a definition of ecotone. The definition is complex. It includes scaling, structural, and functional aspects. Based on this complex definition, we offer a brief review of what is an ecotone, what attributes it has, and how it influences other habitats of interest. We identify feedback as a possibly important but ignored function of ecotones. This discussion is presented in general terms which apply to a variety of ecological situations. We point out that results of an evaluation of ecotone attributes largely depends on the spatial and temporal scale at which ecotone is conceptualized and data are collected. We suggest that some of ecotone determinants scale naturally in a repeatable fashion among various aquatic systems. Finally, we point to the concentration of dynamic properties of ecotones as applied to land/water interface. |
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Keywords: | ecotone dynamics and composition filter heterogeneity scale patchiness zonation |
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