An Oak Woodland’s Long Road Back

This oak woodland in Humboldt County’s Outer North Coast Range is changing as Douglas-fir spreads among the oaks. The project focuses on protecting the woodland and planning restoration over several years.

The Problem

California black oak dominates the woodland, with Douglas-fir encroachment more advanced in some areas than others. Site assessment will help identify priorities for restoration.

Selective fir removal and girdling are part of the initial restoration work, with treatment choices guided by conditions in each area.

The assessment will document understory vegetation alongside oak and Douglas-fir growth to help identify differences across the woodland and priorities for restoration.

The restoration aims to protect oak woodland habitat and address fire risk. Site assessment will guide where fir removal and follow-up vegetation management are appropriate.

A Multi-Year Project

Restoration of this scale can’t happen in a single season. It requires a phased approach, implemented incrementally over several years.

Year 1, Fall – Spring

Initial work focuses on a native plant inventory, seed collection, and site mapping. A master plan will identify priority areas for fir management, while funding opportunities are pursued.

A clay seed-pellet trial will test native annuals and perennials along the woodland edge, in disturbed and high-traffic areas, and on drier slopes. Three sowings between fall and spring will help compare establishment across sites and sowing dates.

Year 1, Spring – Summer

Spring and summer work will focus on selective Douglas-fir removal and girdling in the initial treatment area. The team will also seek funding and partners for a nursery and expanded seed collection to support later planting.

Looking Ahead

Site mapping, seed collection, and initial fir management will guide later planting and treatment phases. Follow-up observations will help the team assess progress and adjust the work over time.