Kelp forest collapse and turf algae expansion documented along Maine's coast over five-year study
By
Shane P. Farrell
A baker's-dozen of insight crammed into one ring.
Summary
This study investigates the decline of kelp forests and their transition to turf algae-dominated reefs in the Gulf of Maine, driven by ocean warming and other anthropogenic stressors. Using field surveys from 32 sites over 5 years (2018–2023), the research reveals a continued collapse of kelp forests and northward expansion of turf algae along Maine's coast. The study examines the patterns, drivers, and ecological consequences of this ecosystem shift, focusing on changes to functional diversity.
Key quotes
· 3 pulledKelp forests are declining in many regions due to ocean warming, predator loss, and other anthropogenic stressors.
In areas of rapid ocean warming, including the southern Gulf of Maine, these ecosystems have transitioned to a novel state dominated by low-lying mats of turf algae.
We used field surveys from 32 sites over 5 years (2018–2023) to reveal a continuation of kelp forest collapse and northward expansion of turf algae across Maine's coast.
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