Johan Viljoen
@johanviljoen.bsky.social
850 followers
360 following
19 posts
Postdoc, @uniofexeter Cornwall. Marine Phytoplankton vertical structure response to Climate Change. Previously Stellenbosch Uni (South Africa), Phytoplankton & Trace Metals in the Southern Ocean. BioGeoSCAPES Fellow.
academic.link/johannesjviljoen
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Johan Viljoen
@johanviljoen.bsky.social
· Sep 25
Climate variability shifts the vertical structure of phytoplankton in the Sargasso Sea - Nature Climate Change
The authors reveal distinct trends in surface and subsurface phytoplankton dynamics, highlighting the need for subsurface monitoring. Whereas subsurface phytoplankton respond to recent warming with bi...
www.nature.com
Reposted by Johan Viljoen
Randie Bundy
@rmbundy.bsky.social
· Jun 2
Anthropogenic iron alters the spring phytoplankton bloom in the North Pacific transition zone | PNAS
Industrial activities have increased the supply of iron to the ocean, but the magnitude
of anthropogenic input and its ecological consequences are ...
www.pnas.org
Reposted by Johan Viljoen
Reposted by Johan Viljoen
Reposted by Johan Viljoen
Reposted by Johan Viljoen
Reposted by Johan Viljoen
Riss Kell, PhD
@drkell.bsky.social
· Dec 20
High metabolic zinc demand within native Amundsen and Ross sea phytoplankton communities determined by stable isotope uptake rate measurements
Abstract. Zinc (Zn) is an essential micronutrient for most eukaryotic phytoplankton. Zn uptake by phytoplankton within the euphotic zone results in nutrient-like dissolved Zn (dZn) profiles with a lar...
bg.copernicus.org
Reposted by Johan Viljoen
Aly Lough
@alylough.bsky.social
· Dec 18
Southern Ocean carbon pump vulnerability to changing iron supply - Yorkshire Environmental Sciences • Doctoral Training Network
Using your results, you will be able to test assumptions and make predictions about iron-mediated impacts of climate change on the biological carbon pump.
yes-dtn.ac.uk
Reposted by Johan Viljoen
Seth Bushinsky
@sethbushinsky.bsky.social
· Dec 10
Reposted by Johan Viljoen
Reposted by Johan Viljoen
Dave Vetter
@davidrvetter.bsky.social
· Oct 9
The Times view on BP’s U-turn on oil and gas: Profit and the Planet
In sensibly scaling back its environmental targets, the oil major offers a salutary example to politicians of the need to balance climate-friendly policies against short-term costs
www.thetimes.com
Reposted by Johan Viljoen
Johan Viljoen
@johanviljoen.bsky.social
· Sep 28