# Marine ecosystem shifts due to ocean changes

> Live situation record from CLSTR: https://clstr.news/situations/marine-ecosystem-shifts-due-to-ocean-changes
> Updated: 2026-08-31T19:56:13.000Z. Sources: 3. Developments: 2.

Scientific research indicates that changing ocean conditions, including acidification and warming, are driving significant shifts in marine ecosystems and their biological processes.

Studies on coral reefs show that rising CO2 levels favor the growth of low-profile turf algae, which can cause the passive dissolution of coral skeletons by creating local pH microenvironments. However, in parts of the Great Barrier Reef, crustose coralline algae may offer a buffering effect by increasing alkalinity through nighttime respiration.

In temperate regions, such as the coast of Maine, ocean warming is causing kelp forests to be replaced by low-growing turf algae. This transition fundamentally alters reef microbial communities and the chemical processes responsible for transforming essential elements like carbon and nitrogen, impacting the overall function of coastal environments.

## Timeline

### 2026-08-31: Kelp forest collapse alters reef microbial communities

Research shows that the loss of kelp forests to turf algae due to ocean warming fundamentally alters reef microbiomes and the chemical cycling of essential elements like carbon and nitrogen.

2 sources. https://clstr.news/cluster/kelp-forest-collapse-alters-reef-microbial-communities

### 2026-08-11: Ocean acidification impacts coral reef carbonate budgets through algae interactions

Studies show ocean acidification affects reefs through dual mechanisms: turf algae may promote coral skeleton dissolution, while crustose coralline algae may help buffer pH levels.

2 sources. https://clstr.news/cluster/ocean-acidification-impacts-coral-reef-carbonate-budgets-through-algae-interactions

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Cite as: Marine ecosystem shifts due to ocean changes. CLSTR, https://clstr.news/situations/marine-ecosystem-shifts-due-to-ocean-changes