Explainers on the physics, chemistry and biology of temperate seas — marine heatwaves, upwelling, holdfast biology, trophic cascades, eDNA.
213 articles
Coral reefs and kelp forests are the ocean's two great forests, but they almost never share a shore. Temperature, light and a line drawn by chemistry decide who rules.
Dr. Lena Fischer ·
A kelp holdfast holds tonnes of drag through a storm with no glue and no roots. The biomechanics of nature's toughest anchor, and what engineers learn.
Dr. Mara Ellison ·
How scientists turn diver counts, satellite pixels and allometric equations into honest kelp biomass estimates — and why every method carries a bias.
Dr. Mara Ellison ·
Wave energy is the architect of rocky reefs. How drag, shear and exposure gradients sort species, sculpt kelp and decide where a forest can stand.
Dr. Lena Fischer ·
Every kelp blade carries a living film of microbes that shapes its growth, defence and disease. Inside the kelp microbiome — and what warming does to it.
Dr. Elias Brandt ·
DNA barcoding reads a short, standard gene to name a seaweed. How it works, what it has revealed about kelp's cryptic species — and where it struggles.
Dr. Theo Nakamura ·
Urchin barrens can persist for decades even when kelp conditions return. Why barrens behave as an alternative stable state — and how reefs flip back.
Dr. Mara Ellison ·
Every kelp species has a temperature window. Learn the physiology of heat stress, why gametophytes are weakest, and how scientists measure and breed thermal tolerance.
Dr. Lena Fischer ·
Kelp canopies don't just slow water — they reorganise it. How canopy flow physics shapes turbulence, nutrient delivery and life inside a kelp forest.
Dr. Lena Fischer ·
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 ·
Wave exposure decides which kelp species can live where, and what shape they take. How ocean energy filters the forest — and why it matters for restoration.
Dr. Lena Fischer ·
Multibeam sonar, sidescan texture, satellite bathymetry and AUVs: how modern seafloor mapping works, what each tool can resolve, and why reefs need it.
Dr. Mara Ellison ·
Ecological succession explains how a bare rocky reef rebuilds into a kelp forest — the pioneer algae, understory kelps, canopy giants, and what restoration can safely skip.
Dr. Mara Ellison ·
After a heatwave, storm or harvest clears a kelp forest, the reef rebuilds in a predictable order. The stage-by-stage science of marine succession.
Dr. Mara Ellison ·
Moving warm-tolerant kelp genotypes ahead of climate heat could buy forests decades. Here's the evidence, the ecological risks and the protocols that make it safer.
Dr. Elias Brandt ·
How do scientists decide if a specific marine heatwave was caused by climate change? Inside event attribution, from FAR to counterfactual oceans.
Dr. Lena Fischer ·
Kelp survived the ice ages in pockets called glacial refugia. That history still structures the genetics of today's forests — and guides restoration.
Dr. Elias Brandt ·
Most reef fish and invertebrates begin life adrift as larvae. Learn the feeding strategies, settlement cues and dispersal lotteries that decide who reaches the reef.
Dr. Mara Ellison ·
Decade-scale reef time series are the unglamorous backbone of kelp science. Here's what continuous monitoring reveals that snapshots never can — and why cuts hurt.
Dr. Mara Ellison ·
From satellite chlorophyll to shellfish closure thresholds, here's how harmful algal bloom forecasts are built, issued and used to keep seafood and coasts safe.
Dr. Lena Fischer ·
Cold water drinks CO2, and the overturning circulation locks it away for centuries. How the ocean's solubility carbon pump works — and what it costs.
Dr. Lena Fischer ·
Why is the sea salty, why is some sea fresher than the rest, and why does salt settle into layers? The ocean's salt budget and haloclines, explained.
Dr. Lena Fischer ·
The Arctic's first bloom happens in the dark, inside the sea ice. How sympagic algae prime the polar food web — and why thinning ice changes it all.
Dr. Mara Ellison ·
Tides do more than raise and lower the shore. Where strong tidal currents rub against banks and sills, they stir deep nutrients up — and kelp coasts come alive.
Dr. Lena Fischer ·