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June 11, 2026Open Access

Multi-provenance assisted seed dispersal slows range contractions of sessile oak (Quercus petraea) in France

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Authors

DNDavid NemerRBRomain BertrandLCLaura Chevaux

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Overview

Randomized trial evaluates assisted dispersal strategies for sessile oak to enhance habitat retention under climate change in France, suggesting vital sourcing adjustments.

Key Points

  • This research aims to assess how multi-provenance seed dispersal can mitigate habitat loss for Quercus petraea in the face of climate change.
  • Utilized provenance-specific species distribution models with a dynamic range-shift model (simRShift) from 2020 to 2100.
  • Tested six regional provenances and five planting effort levels within the operational framework of French national forest agencies.
  • Analyzed the performance of local versus non-local provenances in different environmental contexts.
  • Assisted dispersal retained approximately 2.5 times more suitable habitat compared to local-only strategies by 2100.
  • Provenance performance varied, with local provenances excelling in sheltered regions, while Atlantic and continental origins outperformed locals in lowland areas after 2060.
  • Moderate interventions of about 5% of suitable sites per decade achieved significant persistence gains without exceeding practical nursery constraints.

Cite This Study

Nemer et al. (2026) studied this question.

synapsesocial.com/papers/6a2a528480c8f91e7f39e7edhttps://doi.org/10.20350/digitalcsic/18478
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