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Tag archives for algae

Climate Change Already Having Profound Impacts on Lakes in Europe

For perspective on how climate change is affecting lakes, those of us here in the U.S. can just look across the pond, where scientists and the agencies involved in meeting the European Union’s Water Framework Directive have amassed an impressive body of research on the topic. Not only are extreme weather events such as droughts…

Icelanders Grieve for the Peculiar Lake Balls

  Dr. Isamu Wakana prepares for a dive in Lake Mývatn in Iceland. Isamu is an expert on algae and has come a long way from Japan on his search for an extremely rare plant. As he descends to the bottom he is met by brown silt in every direction. This area was once covered by…

Transgender Algae Show How Males and Females Came to Be

How sexes evolved in the first place has been a lasting mystery in biology. Thanks to some transgender algae, scientists may have cracked this evolutionary whodunit.

To Save Coral Reefs, Start With Parrotfish

  Coral reefs are very complex ecosystems, but luckily managing them sustainably is not. Simply don’t catch fish faster than they reproduce, don’t damage the corals or pollute the water, reduce atmospheric CO2, and protect some areas as marine reserves. That’s easier said than done, and it’s not news. What is new is that an…

Here Today, Dugong Tomorrow!

The Pristine Seas dive team battles rough seas in this update from the expedition team in Mozambique.

Bad Weather, Weird Parrot Fish Fact, and More

Bad weather puts the pressure on the team to get the day’s underwater surveys done, but there’s still time to relate a weird-but-true fact about where sand comes from.

Mystery of Sloths’ Tri-Weekly Poop Trips Solved?

Pooping can be a deadly activity for three-toed sloths. But there are benefits, aside from the obvious. New research shows that going to the bathroom actually results in more food for these tree-dwelling animals.

New Caledonia Expedition: Green Umbrellas in the Reef

Written by Kike Ballesteros Imagine you’re on the first day of vacation, arriving in the Florida Keys, Cozumel, Cabo Pulmo, the Bahamas or another beautiful beach destination. Now it’s time to go swimming and sunbathing on the beach, but you have to be careful. To protect against a sunburn you may need the help of…

Assessing Barbuda’s Ecosystems – What’s Under the Water?

Before making changes to ocean management, it helps to know something about the status of living creatures and ecosystems you’re trying to use sustainably. So, nine marine biologists* (plus me makes ten) descended on Barbuda in May to conduct an ecological assessment of the fish, coral, lobster, conch, and water quality within 3 miles of…

Harmful Algae Blooms Plague Lake Erie Again

Seeing the photos from the record-breaking algal bloom on Lake Erie in 2011 was like déjà vu for me. I grew up in the Great Lakes region in the 1960s and 1970s and remember the days when Lake Erie was declared “dead.” I later learned that the green scum that plagued the lake during summer…

“Lazy” Algae Freeload Off Toxic Kin

Meet the microscopic moocher Prymnesium parvum, a strain of algae that freeloads on its kin without putting in any effort, a new study says.

Pitcairn Islands Expedition Photos: Strange and Beautiful Algae

From feeding fish to building up coral reefs, see why humble algae are actually the unsung heroes of the undersea world.

Black Reefs–When the Ship Hits the Reef

The first time I dived at the remote Kingman Reef, in 2005, I thought I found paradise. When I returned in 2007, I thought I had entered the dark land of Mordor.

Lake Superior water warms faster than usual

The summer of 2010 is shaping up as one with some of the warmest water temperatures ever for the world’s largest lake, according to researchers at the Large Lakes Observatory (LLO) of the University of Minnesota Duluth. “As always, changing water temperatures in Lake Superior have a wide range of implications, from the productivity of…

Vanilla Algae Cone With Sprinkles, Please

Laurencia algae—manatee and turtle grass If you like ice cream, well, you probably like algae. Substances called carrageenans extracted from several types of seaweed (a subset of the world’s algae) thicken and stabilize some popular ice creams and give them their gelatinous texture. Who knew? Algal extracts are also mainstay ingredients in toothpastes, in shampoos…