oaks of California

The Ex-Situ Conservation of California’s Endemic Oaks: In Conversation with Amy Byrne

By Steve Potter | October 28, 2026

Quercus engelmannii, Cuyamaca Rancho State Park, Descanso, Calif., USA Image: Mary Duffy, iNaturalist CC BY-NC 4.0

The value and potential of efforts to conserve California's oaks ex situ

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Hope for California’s Endemic Oaks in a Changing Climate: Further Research

By Steve Potter | August 14, 2026

The provenance trial indicated that valley oak growth declines across much of the low-elevation inland range, and growth increases in several coastal and high-elevation regions under a high-emissions scenario. Figure from Sork et al. (2026).

Two new papers by Dr. Victoria Sork and colleagues

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California’s Oaks in a Changing Climate: In Conversation with Dr. Blair McLaughlin

By Steve Potter | August 10, 2026

Mortality of Quercus douglasii. An indication of things to come? © Blair McLaughlin

How will California’s iconic oaks fare in a changing climate?

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The Threat to California’s Oaks Is Greater than Had Been Anticipated

By Steve Potter | June 9, 2026

The current Red List status and modelled outlook for the eight Californian oak species, plus tanoak

New paper should significantly change our approach to assessing the risk to oaks from climate change

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IOS Tour of California, Part 1: Northern California

By Chris Reynolds | October 30, 2024

From Davis to Los Angeles

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IOS Tour of California, Part 2: Southern California

By John Leszczynski | October 30, 2024

From Los Angeles to the Otay Mountains

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Editor's Picks

Data Request for Gap Analysis of Western Eurasian and North African Oaks

Website Editor | Oct 26, 2026

In Memoriam: Julianne Skai Arbor (1969–2026)

We were shocked to learn that Julianne Skai Arbor, also...