Sentences with phrase «microbial mats»

They produced oxygen by photosynthesis, and sometimes the oxygen got trapped as bubbles within sticky microbial mats.

The brilliant colors found in the spring, are the result of microbial mats which are multi-layered sheets of microorganisms, found around the edges of the mineral rich water.

For this study, Dr. Aude Picard and colleagues Dr. Martin Obst and Gregor Schmid went sampling microbial mats in the historical Segen Gottes silver mine (Black Forest, SW Germany) that contained twisted stalks and submitted them to pressure and temperature conditions that are typically encountered during rock formation, e.g. up to 250 °C and 140 MPa.

In findings published January 10 in Science Translational Medicine, the new compound even eradicated stubborn pathogens growing together in tough - to - treat microbial mats called biofilms, which are complex communities that can be 10 to 1,000 times more tolerant to antibiotics than free - living bacteria.

Fossilized bubbles and cyanobacterial fabric from 1.6 billion - year - old phosphatized microbial mats from Vindhyan Supergroup, central India.

Allwood's team undertook a comprehensive survey of the disputed stromatolites, detailing the variety of shapes contained therein, the ancient setting revealed by the rocks as well as any similarities to present day microbial mats.

Today, microbial mats only occupy marginal habitats, but in the Precambrian era these photosynthetic communities of microorganisms dominated the beds of seas and lakes.

Our ability to coordinate behavior and work collaboratively with others has allowed us to create the natural world's largest and most densely populated societies, outside of deep sea microbial mats and a few Hymenoptera mega-colonies.

However, there is a much broader significance for the analysis of microbes and organic matter in environmental matrices such as microbial mats and biofilms on plant biomass, soils, and sediments.

The team will visit hot springs of varied fluid compositions, the Au - bearing Champagne Pool or the picturesque microbial mat - draped sinter terraces of Orakei Korako, in between others.

Inspired by a 2009 FCL team retreat and field trip to Mistaken Point, Newfoundland, coauthors David Jacobs, Roger Summons, David Johnston, and Marc Laflamme used models of canopy flow to explain how sticking up into the water column provided rangeomorphs, some of these earliest multicellular organisms preserved at Mistaken Point, a competitive advantage over microbial mats.

Toward that end he pursued studies of small (meiofaunal) grazing animals living within microbial mats and documented the earliest appearance of animal and trace (so - called Ediacaran) fossils in late Precambrian sediments in NE Norway.

Malcolm Walter of Macquarie University in Australia discusses the evolution of microbial mats, which are preserved in fossil form as stromatolites.

He found that microbial mats on the lagoon floors contained four times as much oxygen as the lifeless water above — enough to support worms and insect larvae.

This change in grazing style may have contributed to the fragmentation of the microbial mat, which began early in the Cambrian.

Called Treptichnus burrows, these warrens branch again and again, as if a predator just below the microbial mat had systematically probed for prey animals on top.

The best clues come from traces left by peaceful, wormlike animals that grazed on the microbial mat.

Therese Sallstedt and colleagues from University of Southern Denmark, Swedish Museum of Natural History and Stockholm University studied fossilized sediments from India, and they found round spheres in the microbial mats.

In the modern world, these sites are characterized by an unusual abundance of tube worms, bivalves (clams), molluscs, and other animals that survive on the microbial mats that grow there.

We also have evidence of microbial mats.

A microbial mat community in Octopus Spring, Yellowstone National Park, is shown courtesy of Michelle Davison.

Microbial mats could float near the water's surface for efficient photosynthesis when a star is calm, then sink to a safe depth when a flare hits.

Other groups have reconstructed full genomes of microbes out of less complex environments, including mines, microbial mats, and the human microbiome.

In a study recently published in Frontiers in Microbiology, PNNL scientists Young - Mo Kim, Jim Fredrickson, and Tom Metz demonstrated the effect that sunlight or the absence thereof over a 24 - hour period - the diel cycle - has on the production of chemicals used as metabolites in the microbial mats of Mushroom Springs in Yellowstone National Park.

The microbial mats, which are layered accretions of microorganisms, look like slimy bright green floor mats growing in and around the hot springs.

This approach also can be applied to microbial mat and biofilm systems, where carbon isotopes can be measured at distinct layers in the system.

Microbial mat of the thermal springs Kuchiger Republic of Buryatia: species composition, biochemical properties and electrogenic activity in biofuel cell — Denis Aleksandrovich Yuriev — IOP Conference Series: Earth and Environmental Sciences

We collected samples from the microbial mats on the Dutch Wadden island Texel.

He is specialized in the ecology and diversity of cyanobacteria, other marine bacteria and microalgae, and known for his work on microbial mats and nitrogen fixation

Two main geomorphological forms are commonly found in continuous permafrost regions of Eastern Canada: (i) small, shallow, narrow runnel ponds formed over melting ice wedges where peat slumping occurs, and (ii) more stable, slightly larger and deeper, polygonal ponds, which are naturally linked to the active layer freeze - thaw cycles, and can be colonized by aquatic plants and microbial mats (Fig. 1).