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Pollinator interaction flexibility across scales affects patch colonization and occupancy.

Marília Palumbo Gaiarsa1,2, Claire Kremen3,4, Lauren C Ponisio5,6

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Species interaction flexibility helps pollinators colonize and persist in changing habitats. This adaptability in mutualistic networks is key for maintaining ecosystem functions despite shifts in community composition.

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Area of Science:

  • Ecology
  • Conservation Biology
  • Network Theory

Background:

  • Global change impacts ecological communities, potentially disrupting interactions and ecosystem functions.
  • Species respond to global change through local extinction or forming novel interactions.
  • Assessing species' interaction flexibility is crucial but limited by data availability.

Purpose of the Study:

  • To investigate how species' interaction flexibility influences pollinator colonization, persistence, and habitat occupancy.
  • To develop and apply metrics for interaction flexibility at different organizational scales.
  • To identify species traits associated with interaction flexibility.

Main Methods:

  • Utilized a ten-year species-level dataset on mutualistic network assembly in California's Central Valley.
  • Proposed and analyzed three metrics for interaction flexibility.
  • Examined the relationship between species traits (phenological breadth, body size) and interaction flexibility.

Main Results:

  • Species' ability to colonize landscape habitat patches is linked to their role in ecological networks.
  • Phenological breadth and body size exhibited contrasting effects on interaction flexibility.
  • Empirical evidence demonstrates a connection between mutualistic network structure and species' landscape-level success.

Conclusions:

  • Interaction flexibility is a significant factor in species' ability to colonize and persist in modified landscapes.
  • Mutualistic networks play a vital role in community resilience under global change.
  • Interaction flexibility may serve as a mechanism for maintaining ecosystem functions amidst changing community compositions.