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Diplochory: are two seed dispersers better than one?
Stephen B Vander Wall1, William S Longland
1Department of Biology-314, and The Program in Ecology, Evolution, and Conservation Biology, University of Nevada, Reno, NV 89557, USA. sv@med.unr.edu
Trends in Ecology & Evolution
|May 17, 2006
Summary
Diplochory, a two-phase seed dispersal strategy, aids plant survival by escaping early mortality and reaching ideal germination sites. This complex dispersal enhances establishment probability and reduces seed loss.
Area of Science:
- Ecology
- Botany
- Evolutionary Biology
Background:
- Seed dispersal is crucial for plant survival and population spread.
- Diplochory involves sequential seed dispersal by multiple agents.
- Understanding diplochory's phases is key to plant reproductive success.
Purpose of the Study:
- To describe five forms of diplochory.
- To characterize the general features of each seed dispersal phase.
- To elucidate the evolutionary advantages of diplochory.
Main Methods:
- Descriptive analysis of diplochory.
- Derivation of general characteristics for dispersal phases.
- Comparative analysis of single vs. dual dispersal agents.
Main Results:
- Five distinct forms of diplochory were identified.
- Phase one dispersal facilitates escape from parental competition and long-distance colonization.
- Phase two dispersal directs seeds to favorable microsites, increasing establishment probability.
Conclusions:
- Diplochory combines benefits of multiple dispersal events.
- This strategy enhances seed dispersal effectiveness and reduces mortality.
- Diplochory represents an adaptive evolutionary strategy for plants.
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