Sentences with phrase «on algae when»

However, there are also changes in the albedo of snow due to growth of biological communities based on algae when nutrients are deposited on snow.

Not exact matches

The telling hot spot recently observed in the southeast was discovered when the Indian River Lagoon on Florida's Atlantic coast, known for its algae blooms and blankets of dead fish, became much saltier after 2011, and study lead author Arnoldo Valle - Levinson, professor of civil and coastal engineering sciences in UF's College of Engineering, began to investigate the situation.

And unlike other biofuel feedstocks, algae production has minimal impact on freshwater supplies — especially when it can be undertaken in ocean waters or even wastewater.

Then in 1997 and 1998, they and their colleagues sampled copepods in the Adriatic Sea during diatom blooms in winter, when the copepods feast primarily on diatoms, and during the summer, when diatom numbers are down and copepods eat a more mixed diet that includes other algae.

Perhaps, says Hayward, bryozoan larvae feed on algae that grow on the underside of sea ice; then they might accidentally surface when the ice breaks up in summer, before sinking to the bottom for good.

«When we find the fatty acids from the ice algae in the meat or tissues of a fish, it tells us the fish or its prey must have fed on the algae,» says Kohlbach.

The study focused on three of the most common microscopic algae in the Chesapeake Bay that can produce toxic or nuisance conditions when they become very abundant.

«When the sea ice melts, juvenile polar cod may go hungry: Biologists confirm how heavily the fish depend on ice algae.»

When these died, the water cleared, allowing more light to reach larger algae growing on the bottom of the pond — the snails» food.

In 1991, the IMO adopted guidelines which recommend that ships should avoid taking on ballast in shallow areas and during toxic blooms of marine algae; keep accurate records of where and when ballast is loaded; exchange ballast water at sea, where toxic organisms are rare; and discharge sediments into approved areas at the port of destination («End of the line for deadly stowaways», New Scientist, 24 October 1992).

Scientists have generally believed that more algae — more specifically, the type known as phytoplankton — would be good for the climate, since they thrive on CO2 while alive, then carry the carbon they've absorbed down to the sea bottom when they die.

Eventually, however, terrestrial red and green algae and the first lichens developed on land and the final big rise in oxygen may have been caused by the «greening of the continents from around 800 million years ago,» when these simple early lifeforms on land steadily spread and broke down rocks that sustained a higher rate of erosion and led to the release of more nutrients into the oceans that stimulated even more photosynthesis by more newly evolved algae as well as older cyanobacteria (Nick Lane, New Scientist, February 10, 2010).

Especially when they are young, krill feed on algae that live on the underside of sea ice.

Green ingredients like fresh vegetables (cucumber, celery stalk, fennel, zucchini), dark leafy greens and algae are loaded with chlorophyll which purify the body on a cellular level with oxygen and also with powerful antioxidants to help the liver when metabolizing free radicals.

When salmon feed on algae, the algae release astaxanthin, a red carotenoid that actually turns the salmon pink.

When not idling his days away watching episodes of The Sweeny or setting traps to catch the «invasion» of raccoons on his property, Len (Rhys Ifans) can be found enjoying the casual embrace of the cold and rank water that inhabits his «back - to - nature» style swimming pool — complete with weeds, algae and pond life more commonly found in a flee infested bog.

Or «Why is it that whenever we go to the stream, I'm seeing that green algae - looking stuff on there, when I thought you said we cleaned it up?»

I could go on — but it is one of the major nutrient sources that makes algae very happy — and when they outgrow the animals that eat them they form massive blooms.

You didn't answer my questions earlier on this thread when I asked how much of global energy could algae provide and at what cost.

But when pressed, Lovelock said he does believe there's potential in «biochar» — that is, converting some of the world's biomass (e.g. forest slash, agricultural residues, fast - growing grasses grown on depleted soils, farmed algae) into charcoal and sequestering the black mass in soil or under the ocean.

Algae was able to grow on the surface of the eddies, which gives the dead zones a light - blue tint when viewed from above.

Loladze first realized there was something odd going on in 1998, when a lab experiment found that using light to grow additional quantities of algae to feed zooplankton did not result in the zooplankton's growth.

Imagine taking a 31 - year sleep and then instead of a hot cup of coffee when you wake up, all you're given is a sip of water and a bit of algae to munch on.

They include seeding the skies with compounds to encourage the formation of low - lying, cooling clouds; building a giant sun - shade in space; and dumping iron in the oceans to encourage the growth of algae that would take in carbon when alive and trap it in on the sea floor when dead.

A couple of new papers have now been published on the energy return on investment (EROI) of algae - based bioenergy when coupled to a wastewater treatment plant (Energy Return on Investment for Algal Biofuel Production Coupled with Wastewater Treatment: http://www.ingentaconnect.com/content/wef/wer/2012/00000084/00000009/art00002).

When eventually built out it will produce 100 barrels of algae biofuel a day, and currently the five - year - old startup is making algae fuel on ponds across about 100 acres.