John Griffin

@jngriffy.bsky.social

Associate Prof. in Coastal Ecology & Biodiversity @Swansea University. Topics: Biodiversity change; Ecosystem functions & services; Trait-based ecology. Systems: Rocky shores, Salt marshes, Coastal dunes.

Clues to an ocean voyage: bull #kelp (*Nereocystis luetkeana*) grows in shallow water, attached to the rocks w/ its light-capturing blades on the surface. But this kelp is covered w/ pelagic barnacles that only grow on floating debris in the open ocean. This #seaweed has been drifting out at sea! 🌊🦑

Barnacle-covered kelp cast on the sandClose-up of the barnacles

Look at that: 2 #megalodon papers in 2 days! 🦈🚨 This paper re-assesses a hypothesis that Bergmann's rule affected Meg size; & provides multiple lines of statistical evidence to support widespread nursery use instead 🦈 Many congrats to the authors: doi.org/10.1002/spp2... 🦈

No evidence for Bergmann's rule in Otodus megalodon

It has been proposed that Otodus megalodon exhibits a Bergmann-like size pattern, with individuals growing larger in cooler waters, an interpretation used to challenge the existence of fossil nursery...

doi.org

Excited to be in Davos for #WBF2026! And *really* looking forward to this discussion of what to do about the lack of a biodiversity analogue of the World Climate Research Program. Please do come along and contribute - Wednesday, 12:00-13:00, in room Wisshorn! And please pass the word on 😀.

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I’m really excited about this paper, which links #seaweed species’ nitrate uptake & photosynthesis rates w/ functional #traits, providing a predictive framework for understanding roles in nutrient cycling & productivity. 🌊🦑🧪📏🌐 @jngriffy.bsky.social @intertidaleco.bsky.social @mle425.bsky.social

Low-tide seaweeds in the Bodega Marine Reserve (Sonoma County, California) are illuminated by the rising sun.
Annals of Botany@annbot.bsky.social · 2mo ago

🔥ADVANCE ACCESS🔥: Seaweed functional traits predict species’ roles in nutrient cycling and primary productivity doi.org/10.1093/aob/... #PlantScience

There was a time, not long ago, when peaceful protestors were never sent to jail in the UK But at least 286 people have been locked up for protesting climate breakdown and genocide in recent years It's a fucking scandal

New breed of political prisoner arises in Britain as anti-protest sentences rise

More people are being jailed in England and Wales as a result of acting to prevent climate breakdown and the war in Gaza, research reveals

theguardian.com

“Since March last year, it has affected 20,000 sq km of coast – an area twice the size of greater Sydney – and ranks among the worst for marine mass mortality globally, killing millions of sea creatures” “the most awful, tragic thing I’ve personally seen in the ocean in my 40-year career”.

Stripped of life: the deadly South Australian algal bloom is still spreading one year on

More than 20,000 sq km of coast has succumbed to Australia’s first ever bloom of toxic Karenia cristata algae – and scientists worry it could explode again

theguardian.com

El cambio climático está perdiendo la capacidad de sorprendernos: ya intuimos que se superará al año siguiente. Los gráficos de principios de 2026 se parecen tanto q casi da igual la localidad o el parámetro analizado. Izq. lluvias en Grazalema; derecha emisiones de carbono de incendios de Argentina

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