Sentences with phrase «as ocean vents»

(singular: archaeon) a group of tiny organisms often living in extreme environments, such as ocean vents and salt lakes.

Not exact matches

They can be several tens of metres tall, and grow as minerals are deposited when the hot water meets the cold ocean water at the outlet of the hydrothermal vents.

These vents are known as black smokers for the plumes of dark hydrogen sulfide they belch into the ocean.

Bienhold and her team are helping to clarify how life travels around the ocean, and how amazingly well - adapted niche creatures can actually use organic - rich oases like whale carcasses as convenient stepping stones between vents which are few and far between.

A study described here today at the American Geophysical Union's biennial Ocean Sciences Meeting shows that RNA's chemical building blocks fall apart within days to years at temperatures near boiling — a finding that poses problems for some origin of life theories, especially ones picturing that life arose in scalding settings such as deep - sea hydrothermal vents.

However, a microbe collected from a vent in what's known as the Faulty Towers neighbourhood, 2400 metres down in the Pacific Ocean, has upped the ante.

Each contained jumbles of DNA sequences collected from environments such as soil, the ocean, hydrothermal vents, industrial effluent, and cow and baboon faeces.

Now, new research offers a potential solution: Longer RNA chains could have hidden out in porous rocks near volcanic sites such as hydrothermal ocean vents, where unique temperature conditions might have helped complex organisms evolve.

Earthly life has proved remarkably hardy in similar extreme environments such as hydrothermal vents on the ocean floor and polar ice.

The other, which has gained popularity in recent years, is that deep - sea vents at the bottom of the ocean acted as a cradle for life, offering both heat and nutrition via fluids pumped up through Earth's crust.

Although the evidence was subsequently contested, some single - celled microbial life lacking a nucleus that segregates their internal DNA or RNA («prokaryotes») from the surrounding cytoplasm may have flourished in darkness within cracks in Earth's seafloor crust and around deep, warm or boiling hot ocean springs (hydrothermal or volcanic vents, such as at Lost City or at black smokers) without a need for light or free oxygen in the oceans or atmosphere.

As tides raised by Jupiter in Europa's ocean rise and fall, they may cause cracking, additional heating, and even venting of water vapor into the airless sky above Europa's icy surface.

Hydrothermal vents on the ocean floor known as «black smokers» may support undersea habitats on Europa, as on Earth (more).

Many of the deepest branches in Woese's tree, those that join nearest to the three - way junction of the kingdoms, turned out to belong to organisms that live at high temperatures, as in the fuming springs in Yellowstone Park or the volcanic vents that gash the ocean floor.

Scientists have discovered unusual hot water vents at the bottom of the Atlantic Ocean, such as this stone chimney rising three stories above the sea floor.

In Earth's oceans, that sort of heating shows up at sites known as hydrothermal vents.

Microorganisms dominate all other life everywhere scientists have looked, including the human body, the Earth's soils and sediments, the oceans and fresh waterways, the atmosphere and even extreme environments such as hydrothermal vents and subglacial lakes.

It is also thought that hydrothermal vents may regulate the chemistry of the global oceans and could be responsible for the elemental composition of seawater as a whole.

Trained as an astrobiologist at Stanford and Caltech, Loretta has been to the Canadian Arctic to study plant life in extreme environments and to the hydrothermal vents at the bottom of the ocean with «Titanic» director James Cameron to film a 3D IMAX documentary, «Aliens of the Deep.»

You will recall that hydrothermal vents are plumes of hot water that spew from rocks and cracks along the ocean floor, especially in regions of sea - floor spreading, such as oceanic ridges and rift valleys.

As if to seal the case, in early 2017, Cassini discovered silica grains and hydrogen gas in the ice plumes above Enceladus, indicating there must be hydrothermal vents on the floor of the subsurface ocean.

Water, salts, organics, and methane make their way from the hydrothermal vents on the ocean bottom to the surface through cracks in the icy crust, erupting as geysers.

Methane bubbles are coming up from ocean vents off the Washington and Oregon coast, and a new study identified warming ocean temperatures one - third of a mile below the surface as likely responsible.

For a long time people thought that ocean pH was regulated ultimately by reactions between deep seawater and sediments, but as Walt Allensworth February 5, 2015 at 3:08 pm, says there are so many black, and clear, vents along the midocean ridges spewing acidic water, that these probably maintain ocean pH instead.

Exploration of deep - sea hydrothermal vents in other sectors of the Southern Ocean, such as the Pacific - Antarctic Ridge [16], are likely to reveal further chemosynthetic communities.

Further exploration of high - latitude ridges is critical for a full understanding of the global biogeography of vent ecosystems, given the potential role of the Southern Ocean as a gateway or a barrier between the major ocean ridges and back - arc baOcean as a gateway or a barrier between the major ocean ridges and back - arc baocean ridges and back - arc basins.

-- Volcanoes and vents emit less than 1 % of human emissions (even the Pinatubo eruption caused a dip in the CO2 increase, as the cooling by the volcanic dust increased the absorption of the oceans beyond the extra emissions.

However, the conditions predicted for the open ocean may not reflect the future conditions in the coastal zone, where many of these organisms live (Hendriks et al. 2010a, b; Hofmann et al. 2011; Kelly and Hofmann 2012), and results derived from changes in pH in coastal ecosystems often include processes other than OA, such as emissions from volcanic vents, eutrophication, upwelling and long - term changes in the geological cycle of CO2, which commonly involve simultaneous changes in other key factors affecting the performance of calcifiers, thereby confounding the response expected from OA by anthropogenic CO2 alone.