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Evolution alters post-invasion temporal dynamics in experimental communities.

Cara A Faillace1, Peter J Morin1

  • 1Graduate Program in Ecology and Evolution, Dept. of Ecology, Evolution, and Natural Resources, Rutgers, The State University of New Jersey, New Brunswick, New Jersey.

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|September 27, 2019
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Summary
This summary is machine-generated.

Evolutionary history significantly impacts species abundance and temporal variation in ecological communities. These changes can alter interspecific interactions and complicate ecological predictions about population dynamics.

Keywords:
community ecologyeco-evolutionary dynamicsinvasion ecologymicroevolutionrapid evolutiontemporal variability

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Population Dynamics

Background:

  • Temporal variation in organism abundance is a key ecological theme.
  • Rapid evolution can occur on ecological timescales, affecting population dynamics.
  • Understanding how evolution influences temporal variation is crucial for ecological inferences.

Purpose of the Study:

  • To investigate whether evolution alters temporal variability in species abundances within simple ecological communities.
  • To compare experimental findings with predictions from ecological models.
  • To determine the influence of evolutionary history and invasion dynamics on temporal abundance variation.

Main Methods:

  • Experimental communities of ciliates and rotifers were established using founder populations and their evolved descendants.
  • Orthogonal contrasts were used to assess the impact of invader/resident evolutionary history, co-evolution, and invasion itself.
  • Two-species competition and predator-prey models were employed to generate theoretical predictions.

Main Results:

  • Differing evolutionary histories led to significant variations in species abundances and their temporal variability.
  • Evolutionary history of invaders and residents, co-evolution, and invasion all influenced temporal variability, with varying importance.
  • Experimental results for one invader (Euplotes daidaleos) suggested reduced attack rates due to evolution.

Conclusions:

  • Evolutionary history alone can significantly affect temporal variation in species abundances.
  • Evolutionary changes have substantial consequences for interspecific interactions.
  • Ongoing evolution complicates ecological inferences regarding temporal variability in biological communities.