La dernière fiche publiée nous parle d'une #algue brune de nos côtes est-atlantiques : l'algue filamenteuse de La Pylaie.

Par l'excellente équipe
QUINTIN Christophe, VERLAQUE Marc, MÜLLER Yves in : #DORIS, 08/01/2026 :
Pylaiella littoralis (Linnaeus) Kjellman, 1872, https://doris.ffessm.fr/ref/specie/6111

#biodiversite #Ochrophyta #Phaeophyceae #biodiversity #Ectocarpales #vegetaux #algae #ffessm

#FotoVorschlag: Dem Boden ganz nah // Very close to the ground

Damit diese #Braunalge dem Meeresboden ganz nah ist, bildet sie so eine komische Knolle, mit der sie sich an Felsen verankert. Diese schnell wachsende, einjährige Algenart kann bis zu 4 m lang werden und wächst in Tiefen bis 35 m. Im Herbst ist Feierabend, und oft wird die Knolle dann wie hier an den #Strand geschwemmt.
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This #brownAlgae stays close to the seabed with the help of its warty, bulbous #holdfast that attaches to rocks. A fast growing, annual #seaweed, it can reach up to 4 metres in length and is found at depths of up to 35 metres. In autumn, it begins fruiting and starts to decay, with the #bulb often washing up on the #shore.

#TextureTuesday


#SaccorhizaPolyschides #Saccorhiza #basaleKnolle #Sackwurzeltang #Braunalgen #Phaeophyceae #Tang #kelpForest #Tangwald #Algenwald #Rhizoid #kelp #Thallus #furbelows #furbellow #furbellows #seaHedgehog #seaweed #Seetang #algae #Alge #Algen #beach #MorfaNefyn

#Phycologists discover what makes some #BrownAlgae shimmer and others not
https://phys.org/news/2024-05-phycologists-brown-algae-shimmer.html

#StructuralColour in the brown algal genus Sporochnus (Sporochnales, #Phaeophyceae) https://phys.org/news/2024-05-phycologists-brown-algae-shimmer.html

"Most brown #algae are yellowish-brown, but #scuba divers noticed that a species resembling #Sporochnus shimmers like peacock feathers in yellow, bright green or blue when direct light is shone on them."

Phycologists discover what makes some brown algae shimmer and others not

Compartments of consistently sized, tightly packed microspheres are what makes some brown algae shimmer like opal. The Kobe University discovery not only sheds light on the mechanism behind the alga's structural coloration, it is also the first to spot the effect in an order of brown algae other than the two where it was known to occur.

Phys.org