The urgency of genetic decline in New Brunswick butternut, Juglans cinerea L.

Butternut is yet another North American tree species undergoing rapid mortality due to the globalization of forest pathogens. Pairing tree health surveys and genetic diversity metrics, we captured a 7‐year snapshot of butternut's path to extirpation from its distinct range in New Brunswick, Canada. We recorded substantial mortality and vigour decline in these genetically unique populations, where a major proportion of genetic diversity was contributed by dying trees. We discuss feasible actions on a tight deadline for species under range‐wide pathogen pressure and highlight a blind spot in conservational policy: the risk of substantial genetic depletion far prior to extirpation.

• Publication year

  2025

• Venue

  Plants, People, Planet

• Publication date

  2025-07-31

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1002/ppp3.70079
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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