#restoration-science

3 articles

Regime Shifts on Rocky Reefs: Why Forests Flip to Barrens — and Sometimes Flip Back

Why rocky reefs flip from kelp forest to urchin barren — and why flipping them back is so much harder. Alternate stable states and hysteresis, explained.

Dr. Theo Nakamura · September 26, 2026

Science7 min read

The Restoration Toolkit: What the Evidence Says About Rebuilding Kelp

Green gravel, seeded lines, urchin culling, spore bags, assisted migration — how the main kelp restoration methods compare on cost, scale and evidence of success.

Dr. Mara Ellison · September 16, 2026

Science11 min read

Urchin Barrens: How Reefs Flip, and Why They Stay Flipped

The science of alternate stable states on rocky reefs: how kelp forests collapse into urchin barrens, why barrens resist recovery, and how reefs flip back.

Dr. Mara Ellison · April 2, 2026

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