• Corpus ID: 15023564

Advantages of seed dispersal: A re-evaluation of directed dispersal

@article{Wenny2001AdvantagesOS,
  title={Advantages of seed dispersal: A re-evaluation of directed dispersal},
  author={Daniel G. Wenny},
  journal={Evolutionary Ecology Research},
  year={2001},
  volume={3},
  pages={37-50}
}
  • D. Wenny
  • Published 2001
  • Environmental Science
  • Evolutionary Ecology Research
Seed dispersal can be advantageous (1) in escape from density- or distance-dependent seed and seedling mortality, (2) by colonization of suitable sites unpredictable in space and time, and (3) by directed dispersal to particular sites with a relatively high probability of survival. Most previous research on the consequences of seed dispersal has focused on escape and colonization because adaptations ensuring directed dispersal are not expected under the paradigm of diffuse mutualism that… 
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428 Citations
Highly Influential Citations
32
Background Citations
250
Methods Citations
1
Results Citations
3

428 Citations

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Citation Type

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A simple analytical model is introduced that calculates the optimal DrD level at which seed arrival to favorable establishment sites yields maximal fitness gain in comparison to a null model of random arrival, and demonstrates that some properties of the invasion process are facilitated by high DrD levels, and not by intermediate levels as expected from the analytical model.
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The population dynamics of four large-seeded species within the jarrah (Eucalyptus marginata) forests of southwestern Australia was investigated within areas of contrasting high/low emu abundance, showing that the emu is a highly mobile and effective LDD vector, and could disperse many seeds > 1500 m from the parent plant and up to a maximum dispersal distance of ca.
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It is argued here that advances in plant dispersal ecology research will be determined by the ability to surmount challenges of spatiotemporal scales and heterogeneities and ecosystem complexity.
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To the authors' knowledge, this is the first quantitative demonstration that the nature and strength of directed dispersal affects the robustness of fragmented plant populations to anthropogenic disturbance.
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References

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  • D. Wenny, D. Levey
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1998
A fundamental goal of plant population ecology is to understand the consequences for plant fitness of seed dispersal by animals. Theories of seed dispersal and tropical forest regeneration suggest…
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TLDR
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