Researchers find harmful algae species was not new to South Australian waters
Commonwealth Scientific and Industrial Research Organisation (CSIRO) Oceans and Atmosphere
Published: 19 March 2026
Archived DNA analysis by CSIRO and partners revealed that Karenia cristata, the species behind South Australia's devastating 2025 algal bloom, has been present at low levels since 2016, indicating environmental changes triggered its dramatic increase.
Keywords: harmful algal bloom, Karenia cristata, eDNA, South Australia, brevetoxin, marine microbiology, IMOS
Interaction of carbon and nutrient cycles overlooked in marine carbon dioxide strategies
University of Rhode Island Graduate School of Oceanography
Published: 9 March 2026
URI researchers found that marine carbon removal strategies may overestimate their long-term impact by overlooking how phosphorus remains trapped in the deep ocean longer than carbon, creating a productivity hangover.
Keywords: marine carbon dioxide removal, nutrient cycles, phosphorus, ocean fertilization, carbon pump, phytoplankton, biogeochemistry
New study reveals long-term impacts of deep-sea mining and first signs of biological recovery
National Oceanography Centre
Published: 26 March 2026
A NOC-led study published in Nature found that mining tracks in the Clarion Clipperton Zone remain visible 44 years later, but some organisms including xenophyophores have begun to recolonise the disturbed seabed.
Keywords: deep-sea mining, biological recovery, Clarion Clipperton Zone, seabed mining, SMARTEX, polymetallic nodules, benthic ecology
