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Tag: "marine" at biology news

Scientists uncover link between ocean's chemical processes and microscopic floating plants

...xperiments," said Wingenter. "The consequences for marine organisms, their ecosystems and climate-relevant gases are unknown." During the study, concentrations of dimethyl sulfide (DMS) and chloroiodomethane, produced by phytoplankton in ocean water, were measured. "In the atmosphere, DMS is rapidly oxi...

How fish species suffer as a result of warmer waters

...hange causes changes in the species composition of marine ecosystems, especially in shallow coastal oceans. ...hanisms involved in climate-induced alterations in marine ecosystems. The paper 'Climate change affects marine fishes through the oxygen limitation of ther...

New species of snapper discovered in Brazil

...tes its life cycle in different but interdependent marine habitats such as coral reefs and mangroves. "This discovery that a large, popular fish is a species new to science shows how little we know about the oceans that surround us," Moura said. "It looks like other snapper species found in the Caribbean...

Shedding new light on proteorhodopsin

...odopsin, the light-sensitive protein found in many marine bacteria. Researchers at the U.S. Department of E...covered encoded within the genomes of uncultivated marine bacteria. The discovery implied that such bacteria possessed phototrophic as well as respiratory ca...

ESA launches new project to protect biodiversity

...g to promote a more sustainable use of coastal and marine resources in oceanic and coastal areas in Latin Am...region protected and making sustainable use of our marine resources, for our future generations," MarViva's Michael Rothschild said. Because the developmen...

Darwin's famous finches and Venter's marine microbes

...t is hard to predict the impact the vast amount of marine microbial DNA ?collected during the Sorcerer II Gl..., but this ability has been entirely lost in their marine relatives.. Flagella, whip-like extensions propelling bacteria forward and pili, short extensions us...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

...bottom of the world. "We're already seeing the marine ecosystems respond dramatically to increases in te...a ice along the coast shows a drop in krill in the marine environment. As a major food source for higher animals, the loss of krill will reduce resources for ...

Gene chips forecast ecological impacts of climate change

...iology to assess climate-change related impacts on marine invertebrates at the annual meeting of the America...s on sea urchins and mussels, important members of marine ecosystems. The main focus will be on finding ways to assess the effects of temperature stress and l...

The origin of the brain lies in a worm

...To do so, they investigate the nervous system of a marine annelid worm called Platynereis dumerilii. "Platynereis can be considered a living fossil," says Arendt, "it still lives in the same environment as the last common ancestors used to and has preserved many ancestral features, including a prototype i...

Twenty of world's 162 grouper species threatened with extinction

...urgent need for fishery management, more effective marine protected areas (MPAs), and more sustainable eatin...p. The workshop is part of a worldwide study of marine life called the Global Marine Species Assessment (GMSA) by IUCN, Conservation International and nume...

Turtles are loyal in feeding as well as in breeding

...arch Council (NERC), shows for the first time that marine turtles appear to be as loyal to specific foraging...ir life cycle.' Scientists have long known that marine turtles return to the same breeding sites each year, but did not know until now that they also revis...

Microfossils unravel climate history of tropical Africa

...ils of soil bacteria. They applied the method to a marine sediment core taken in the outflow of the Congo Ri...ntained eroded land material and microfossils from marine algae. The results show that the land environment of tropical Africa was cooled more than the adjace...

Ocean's 'twilight zone' may be a key to understanding climate change

...ans with iron--to promote blooms of photosynthetic marine plants and transfer more carbon dioxide from the a... overcame a longstanding problem of how to collect marine snow falling into the twilight zone. ...

Fish growth changes enhanced by climate change

...at depth. Dr Thresher said populations of large marine species are widely subject to two major stressors ...ect of temperature on the physiology and growth of marine animals, it was likely that similar effects would be seen in many other species. The science te...

Williams College biologist explores photosynthetic apparatus

...tosynthetic apparatus in one of the most important marine primary producers of the world. Her project is ti...thetic capabilities of this ecologically important marine cyanobacterium. She hopes that the project will lead to a marked improvement in the ability to a...

How fish conquered the ocean

...oat. This is the major solution realized by extant marine teleosts that showed an unprecedented radiation du...n unparalleled and rapid burst of thousands of new marine teleost species took place as evidenced by their sudden appearance in the fossil records of marine s...

Chemicals in brown algae may protect against skin cancer

Substances extracted from a marine seaweed may protect against skin cancer caused by ...phenols (BAPs), which are found in a type of brown marine seaweed, might protect against skin cancers caused by ultraviolet B (UVB) radiation. UVB radiati...

Volcanic eruptions, ancient global warming linked

...global warming. "There has been evidence in the marine record of this period of global warming, and evide...y match ash layers in east Greenland with those in marine sediments in the Atlantic Ocean. "We think the first volcanic eruptions began about 61 million ye...

US conservation efforts bring more marine turtles to UK

...onservation efforts may have boosted the number of marine turtles visiting UK waters, according to Universit...he data tells the story of the interaction between marine turtles and humans over the last hundred years,?said Matthew Witt of the University of Exeter. ‘Foll...

MIT's ocean model precisely mimics microbes' life cycles

... of new information about the genetic diversity of marine microbes, recent advances in computational capability and a simple recognition of his own bias. "Physicists, like myself, have a bit of a reductionist view. We often shy away from the complexity of the real world in our models and prefer to reduce...

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