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Chapter 13 - Spatial variation in seedling emergence and establishment – functional groups among and within habitats?

Published online by Cambridge University Press:  05 June 2012

Johannes Kollmann
Affiliation:
University of Copenhagen, Department of Ecology, Frederiksberg C, Denmark
Mary Allessio Leck
Affiliation:
Rider University, New Jersey
V. Thomas Parker
Affiliation:
San Francisco State University
Robert L. Simpson
Affiliation:
University of Michigan, Dearborn
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Summary

Introduction

Based on over two centuries of biogeographical research starting with Schimper (1898) and supported by intensive ecological studies during the past decades, a synthesis of large-scale plant distribution patterns and plant functional types may now be possible (Box, 1996; Westoby & Wright, 2006). Plant functional types are nonphylogenetic species groups that show close similarities in their response to ecological factors (Duckworth et al., 2000). Functional types are derived from morphological, ecophysiological, and life history traits, often cutting across taxonomic groupings. One advantage of this approach is that some traits can be readily measured in the field and may act as surrogates for others, which require time-consuming laboratory measurements or experiments. Plant functional types are the ones suggested by Grime (1979, 2001), the three main traits determining plant performance as proposed by Westoby (1998), hierarchical classifications (Lavorel et al., 1997), or the seedling strategy types described by Keddy et al. (1998); the latter were experimentally tested by Carlyle and Fraser (2006). These conceptual frameworks and some older systems like the life-forms by Raunkiaer (1934) or the scheme devised by Hallé and Oldeman (1975), based on the reiteration of plant modules, may now be integrated into the biogeographical types of the world vegetation (Whittaker, 1970; Holdridge et al., 1971; Breckle, 2002), as done for seed dormancy and germination by Baskin and Baskin (2001).

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Publisher: Cambridge University Press
Print publication year: 2008

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