A little less than 2 billion years ago, metals including copper, molybdenum and zinc became available to primitive cells, at the same time that the cells began to become much more complex. Scientists indicate that they have ...
Earth Sciences
Jun 21, 2012
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A new study of sediments laid down shortly after an asteroid plowed into the Gulf of Mexico 65.5 million years ago, an event that is linked to widespread global extinctions including the demise of big dinosaurs, suggests ...
Archaeology
Oct 11, 2011
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While the cause of the mass extinction that occurred between the Permian and Triassic periods is still uncertain, two University of Rhode Island researchers collected data that show that terrestrial biodiversity recovered ...
Earth Sciences
Oct 10, 2011
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(PhysOrg.com) -- What constitutes fish food is a matter of debate. A high-profile study a few years ago suggested that fish get almost 50 percent of their carbon from trees and leaves, evidence for a very close link between ...
Ecology
Nov 24, 2009
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While the impact of wildfires on terrestrial life has been well studied, only recently has research started to examine the effects of wildfire ash on aquatic organisms. New research reveals that wildfire ash can have lethal ...
Plants & Animals
Jul 2, 2024
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Global fires have widespread impacts on the global carbon cycle and atmospheric environment with immediate direct carbon emissions. Fire carbon emission has substantial spatiotemporal variabilities and contributes to the ...
Earth Sciences
Mar 20, 2023
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For a long time, the great ocean explorers used sight to reveal the secrets of the marine environment, downplaying its acoustic aspects. Indeed, the ocean has long been considered a place devoid of any sound.
Ecology
Jun 13, 2022
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38
Resource pulses, i.e., occasional episodes of ephemeral resource superabundance, represent a fundamental mechanism by which energy, nutrients, and biomass are transported across ecotones. They are widespread in extant ecosystems; ...
Ecology
Jun 7, 2022
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Wetlands are particularly sensitive to hydrological changes, such as the reduction in water supply during extensive droughts. In response to a reduction of water levels, many aquatic plants can become amphibious, producing ...
Plants & Animals
Nov 11, 2021
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The negative impact of metals in polluted lakes on aquatic organisms may also adversely affect insectivorous birds on land. This is the conclusion of a dissertation from the Industrial Doctoral School for Research and Innovation ...
Plants & Animals
Apr 8, 2021
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