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Biotic interactions and macroevolution: extensions and mismatches across scales and levels
1Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, Illinois 60637, USA. djablons@uchicago.edu
Evolution; International Journal of Organic Evolution
|April 5, 2008
Summary
Ecological interactions like competition and predation shape clade dynamics, but scale mismatches exist between modern and ancient systems. Integrating paleontological and neontological data is key to understanding these complex evolutionary patterns.
Area of Science:
- Evolutionary biology
- Paleontology
- Ecology
Background:
- Clade dynamics in the fossil record align with ecological theories like competition and predation.
- However, modern and ancient data reveal scale mismatches in these interactions.
- Indirect effects, such as range restrictions due to antagonism, can increase extinction risk.
Purpose of the Study:
- To investigate apparent contradictions in evolutionary dynamics across different scales and levels.
- To explore how organismic interactions influence genetic structures, geographic ranges, and speciation.
- To identify novel integrative approaches for analyzing macroevolutionary patterns.
Main Methods:
- Analysis of paleontological and neontological data.
- Examination of indirect ecological effects on extinction and speciation.
- Review of cross-level tensions in evolutionary biology.
Main Results:
- Mismatches exist between individualistic species shifts and coevolutionary relationships.
- Extensive interaction networks contrast with specialized defenses and mutualisms.
- Macroevolutionary lags are observed alongside rapid microevolution and community invasibility.
Conclusions:
- Resolving cross-level evolutionary tensions requires understanding how interactions affect genetic structure and range.
- Generalizations are currently limited due to incomplete data.
- Novel integrative approaches, including advanced modeling and analysis of natural experiments, are crucial for future research.
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