Posted on September 13, 2015 by Bob Berwyn
Ocean acidification may have far-reaching effects on algae.
‘Subtle changes in calcification can cause dramatic changes in skeletal performance …’
LINZ — Scientists working at an underwater volcano near Sicily say they have new evidence that ocean acidification could change fundamental parts of marine ecosystems.
Their research shows that acidification weakens algal skeletons. Even a small loss of skeletal calcification caused by exposure to corrosive waters can have a significant impact and leave algae at risk of losing access to light and nutrients, the researchers concluded in a new paper published in the Royal Society’s Biology Letters. Continue reading
Filed under: climate and weather, global warming, ocean acidification | Tagged: algae, climate change, Environment, marine ecosystems, ocean acidification | Leave a comment »
Posted on April 2, 2013 by Bob Berwyn
This NASA Landsat-5 image shows the record-breaking algal bloom in Lake Eerie in October of 2011. The green scum is mostly microcystis, a toxin to mammals.
2011 event was three times larger than any previously recorded bloom
By Summit Voice
SUMMIT COUNTY — A record-breaking 2011 algae bloom — three time larger than any on record — in Lake Erie is a warning sign, as global warming is expected to generate more intense rainstorms that flush fertilizers from surrounding fields into the water.
The Lake Erie bloom was triggered by long-term agricultural practices coupled with extreme precipitation, followed by weak lake circulation and warm temperatures, the researchers said, concluding that the lake will continue to experience extreme blooms unless agricultural practices change.
While the changing climate is a key factor, some of the impacts could be mitigated with best management practices, a group of researchers concluded in a new study published online in the Proceedings of the National Academy of Sciences. Continue reading
Filed under: climate and weather, Environment, global warming, water | Tagged: algae, Algal bloom, Carnegie Institution for Science, climate change, Environment, Lake Erie | Leave a comment »