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This study aimed to assess the genetic connectivity and diversity of deep kelp forests to evaluate their role as refuges from climate change.

Cross‐Depth Genetic Connectivity Supports the Role of Deep Kelp Forests as Refuge From Climate Change

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This study aimed to assess the genetic connectivity and diversity of deep kelp forests to evaluate their role as refuges from climate change.
Used ddRAD sequencing to analyze genetic diversity and connectivity between deep and shallow kelp populations.
Compared allele frequencies of loci under selection across different depths and environmental conditions.
Studied three regions in Western Australia: Abrolhos Islands, Albany, and Esperance.
No significant difference in genetic diversity and weak genetic differentiation found between depths.
High bi-directional gene flow was observed at each location.
Adaptive differentiation detected only at warmer range edge with many loci under selection linked to thermotolerance and environmental stress.

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Randomized trial evaluates genetic connectivity and diversity of deep kelp reefs, suggesting their potential as climate refuges.

Minne et al. (2026) studied this question.

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