Phytoplankton Current Events | Phytoplankton News | 3
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Microbial stowaways: Are ships spreading disease?
Ships are inadvertently carrying trillions of stowaways in the water held in their ballast tanks. When the water is pumped out, invasive species could be released into new environments. Disease-causing microbes could also be released, posing a risk to public health, according to an article in the May issue of Microbiology Today. view more (2008-05-29)
"Nanominerals" Influence Earth Systems from Ocean to Atmosphere to Biosphere
The ubiquity of tiny particles of minerals--mineral nanoparticles--in oceans and rivers, atmosphere and soils, and in living cells are providing scientists with new ways of understanding Earth's workings. Our planet's physical, chemical, and biological processes are influenced or driven by the properties of these minerals. view more (2008-03-24)
B12 Is Also an Essential Vitamin for Marine Life
B12 - an essential vitamin for land-dwelling animals, including humans - also turns out to be an essential ingredient for growing marine plants that are critical to the ocean food web and Earth's climate, scientists have found. view more (2007-05-21)
Timing is Everything for Northern Shrimp Populations in the North Atlantic
Even for Northern shrimp (Pandalus borealis), which support commercial fisheries worldwide, timing is everything in life. The tiny creatures, eaten in shrimp rolls and shrimp salad, occupy a pivotal role in the oceanic food chain and may serve as early indicators of changing climate due to their sensitivity to temperature. view more (2009-05-08)
UGA scientists discover bacterial 'switch gene' that regulates oceans' sulfur emissions into the air
The number of plankton in the seas is almost beyond comprehension. A single teaspoonful of ocean water holds several million of these microscopic drifters, and in recent years, scientists have discovered plankton are involved with everything from the health of the water to global warming. view more (2006-10-27)
Role of Silica in Climate Cycles
New research from the University of East Anglia (UEA) has demonstrated that the compound silica was not solely responsible for changes in carbon dioxide levels during past Ice Ages. It is already known from scientific research that during past Ice Ages increased amounts of silica, a common component of wind-blown dust, were deposited in the ocean.... view more... (2001-06-21)
Antarctic krill provide carbon sink in Southern Ocean
New research on Antarctic krill (Euphausia superba), a shrimp-like animal at the heart of the Southern Ocean food chain, reveals behaviour that shows that they absorb and transfer more carbon from the Earth's surface than was previously understood. view more (2006-02-07)
Climate change causing significant shift in composition of coastal fish communities
A detailed analysis of data from nearly 50 years of weekly fish-trawl surveys in Narragansett Bay and adjacent Rhode Island Sound has revealed a long-term shift in species composition, which scientists attribute primarily to the effects of global warming. view more (2008-06-30)
Climatic variations influence the emergence of cholera in Africa
In studies aiming to understand better the emergence and persistence of cholera in Africa, IRD and CNRS researchers showed the strong correlation that exists between outbreaks and the different parameters linked to climate changes in West Africa. view more (2007-09-06)
New group of algae discovered: Picobiliphytes
An international group of researchers has succeeded in identifying a previously unknown group of algae. As currently reported in the scientific journal Science, the newly discovered algae are found among the smallest members of photosynthetic plankton-the picoplankton ('Picobiliphytes: A marine picoplanktonic algal group with unknown affinities to... view more... (2007-01-12)
The first Envisat check-up on the Earth
A major new health check on the Earth got under way on 1 March, when the European Space Agency's Envisat satellite was launched by an Ariane 5 rocket from Europe's spaceport in French Guiana. It is the largest and most sophisticated Earth observation satellite ever built. Following the launch and deployment of the solar panel and antennas, the... view more... (2002-03-28)
Ocean Carbon: A Dent in the Iron Hypothesis
Oceanographers Jim Bishop and Todd Wood of the U.S. Department of Energy's Lawrence Berkeley National Laboratory have measured the fate of carbon particles originating in plankton blooms in the Southern Ocean, using data that deep-diving Carbon Explorer floats collected around the clock for well over a year. view more (2009-05-07)
Climate variability impacts the deep sea
Deep-sea ecosystems occupying 60% of the Earth's surface could be vulnerable to the effects of global warming warn scientists writing in the Proceedings of the National Academy of Sciences. view more (2009-11-03)
NASA celebrates a decade observing climate impacts on health of world's oceans
The NASA-managed Sea-viewing Wide Field-of-view Sensor (SeaWiFS) instrument settled into orbit around Earth in 1997 and took its first measurements of ocean color. view more (2007-09-20)
Chemical Cudgel in Plants
Defense mechanisms of single-celled algae Plankton are at the bottom of the food chain in all natural bodies of water and are thus correspondingly important for their ecological balance. In the cycle of eating and being eaten it isn't only fish and whales that prey on these tiny animals and plants - they also eat each other. For example, a variety... view more... (2000-11-29)
New Caledonia Lagoon: Sediment Transport Tracking And Prediction
Researchers have for several years now been using numerical modelling in the southwestern lagoon of New Caledonia to work out marine current circulation patterns and obtain detailed knowledge of its hydrodynamics. The lagoon has been subject to substantial sediment inputs generated by erosion and human activity. An IRD team has developed a... view more... (2003-09-24)
Nitrogen in the air feeds the oceans
A decade-long USC study has written the ending to a long-standing mystery: Where do marine organisms in the tropical oceans get the nitrogen they need to grow? view more (2005-08-11)
WHAT FACTORS FAVOUR THE ECOLOGICAL DIVERSITY OBSERVED IN ATOLL LAGOONS ?
The first step in the investigation was the mapping by remote sensing techniques of more than two-thirds of the 76 atolls of the Tuamotu archipelago. High resolution maps, which did not exist before, were then established. Using the cartographic data thus gleaned alongside morphometric parameters picked out (size and shape of the lagoons, degree... view more... (1999-04-14)
Complex ocean behavior studied with 'artificial upwelling'
A team of scientists is studying the complex ocean upwelling process by mimicking nature - pumping cold, nutrient-rich water from deep within the Pacific Ocean and releasing it into surface waters near Hawaii that lack the nitrogen and phosphorous necessary to support high biological production. view more (2008-09-03)
Towards improved management of reservoirs in the semi-arid Northeast region of Brazil
In the Northeast region of Brazil, reservoirs called a'§udes are the main water resource during periods of drought, which are frequent and consequently often catastrophic in this part of Brazil. IRD has since 1995 been conducting a research programme on these reservoirs, in conjunction with the Federal Rural University of Pernambuco's Department... view more... (2000-05-17)
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