Geobiology

Geobiology is a science that combines geology and biology to study the interactions of organisms with their environment. Articles on Geobiology include topics on the interactions of the biosphere with the lithosphere, or with the athmosphere.

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Geobiology Articles

New Bacterial Behavior: Puzzling 'Dance' of Electricity-Producing Bacteria Near Energy Sources

4 May 2010

Rating: 5.00

Bacteria dance the electric slide, officially named electrokinesis by the USC geobiologists who discovered the phenomenon.

Methane-Eating Microbes Can Use Iron And Manganese Oxides To 'Breathe'

4 May 2010

Rating: 3.25

Iron and manganese compounds, in addition to sulfate, may play an important role in converting methane to carbon dioxide and eventually carbonates in the Earth's oceans, according to a team of researchers looking at anaerobic sediments.

Snowball Earth: New Evidence Hints at Global Glaciation 716.5 Million Years Ago

4 May 2010

Rating: 5.00

Geologists have found evidence that sea ice extended to the equator 716.5 million years ago, bringing new precision to a "snowball Earth" event long suspected to have taken place around that time.

Environmental Disaster in Southern Spain Compared With Cretaceous Mass Extinction

4 May 2010

Rating: not rated

Researchers from the University of Granada (UGR) have compared the disaster caused by the Aznalcóllar spillage in the Doñana National Park in Andalusia 11 years ago with the biggest species extinction known to date.

Chemical Imaging Of Deep-Sea Microorganisms May Help Explain Lingering Nitrogen Mystery

4 May 2010

Rating: not rated

Researchers at the California Institute of Technology (Caltech) have identified an unexpected metabolic ability within a symbiotic community of microorganisms that may help solve a lingering mystery about the world's nitrogen-cycling budget.

Life May Extend Planet's 'Life': Billion-Year Life Extension For Earth Also Doubles Odds Of Finding Life On Other Planets

4 May 2010

Rating: 5.00

Roughly a billion years from now, the ever-increasing radiation from the sun will have heated Earth into inhabitability...

Earliest Complex Organisms Fed By Absorbing Ocean Buffet, Geobiologists Propose

4 May 2010

Rating: not rated

Research at Virginia Tech has shown that the oldest complex life forms -- living in nutrient-rich oceans more than 540 million years ago – likely fed by osmosis.

Quick Rebound From Marine Mass Extinction Event, New Findings Show

4 May 2010

Rating: not rated

In 1980, Luis Alvarez and his collaborators stunned the world with their discovery that an asteroid impact 65 million years ago probably killed off the dinosaurs and much of the the world's living organisms.

Microbial and hydrothermal aspects of ferric oxyhydroxides and ferrosic hydroxides: the example of Franklin Seamount, Western Woodlark Basin, Papua New Guinea

9 Jul 2009

Rating: 3.56

This paper presents mineralogical, chemical and morphological information on the oxyhydroxides from Franklin Seamount...

The effect of adsorbed lipid on pyrite oxidation under biotic conditions

9 Jul 2009

Rating: not rated

This investigation reports on the growth of this bacterial species on the pyrite surface and in the aqueous phase at a pH close to 2 as well as the role of adsorbed lipid in preventing pyrite dissolution.

Influence of ancient glacial periods on the Andean fauna: the case of the pampas cat (Leopardus colocolo)

8 Jul 2009

Rating: 1.00

In this study, the genetic structure of the pampas cat (Leopardus colocolo), a widely distributed felid, was determined and linked to ancient climate fluctuations on the Andean region.

Deep Sea Algae Connect Ancient Climate, Carbon Dioxide And Vegetation

5 Jul 2009

Rating: not rated

Assistant Professor Mark Pagani in the Department of Geology and Geophysics at Yale and his colleagues mapped the first detailed history of atmospheric carbon dioxide between 45 - 25 million years ago based on stable isotopes of carbon...

Carbon Dioxide Helped Ancient Earth Escape Deathly Deep Freeze

5 Jul 2009

Rating: not rated

The planet’s present day greenhouse scourge, carbon dioxide, may have played a vital role in helping ancient Earth to escape from complete glaciation

Cleaning The Atmosphere Of Carbon: African Forests Out Of Balance

5 Jul 2009

Rating: not rated

Tropical forests hold more living biomass than any other terrestrial ecosystem.

Atmosphere Threatened By Nitrogen Pollutants Entering Ocean

5 Jul 2009

Rating: 3.33

A large quantity of nitrogen compounds -- emitted into the atmosphere by humans through the burning of fossil fuels and the use of nitrogen fertilizers -- enters the oceans and may lead to the removal of some carbon dioxide from the atmosphere...

Tropical Rainforest Nutrients Linked To Global Carbon Dioxide Levels

5 Jul 2009

Rating: 4.00

Extra amounts of key nutrients in tropical rain forest soils cause them to release more carbon dioxide into the atmosphere, according to research conducted by scientists at the University of Colorado (CU) - Boulder.

How Humans Have Disrupted The Nitrogen Cycle

5 Jul 2009

Rating: 2.50

More and more, scientists are getting a better grip on the nitrogen cycle.

Global Warming's Ecosystem Double Whammy

5 Jul 2009

Rating: not rated

Plants and soils act like sponges for atmospheric carbon dioxide, but new research finds that one abnormally warm year can suppress the amount of carbon dioxide taken up by some grassland ecosystems for up to two years

Study casts doubt on 'Snowball Earth' theory

15 Feb 2008

Rating: 3.80

Remains of photosynthesizing microbes in prehistoric rocks suggest Earth was not ice-bound

Paired microbes eliminate methane using sulfur pathway

15 Feb 2008

Rating: 4.00

Anaerobic microbes in the Earth's oceans consume 90 percent of the methane produced by methane hydrates - methane trapped in ice - preventing large amounts of methane from reaching the atmosphere.