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Tag: "bloom" at biology news

Growth in the sea comes down to a struggle for iron

... scientists had recorded the largest phytoplankton bloom of any of the iron fertilization tests conducted to that date. The question that remains unanswered is why the diatoms showed signs of nutrient stress before the iron and other nutrients were used up. Wells and his colleagues think they may know. Fo...

NASA study finds snow melt causes large ocean plant blooms

...er, creating ideal conditions for phytoplankton to bloom every year during summer. Since 1997, a reduction in snow has led to wider temperature differences between the land and ocean during summer. As a consequence, sea surface winds over the Arabian Sea have strengthened leading to more intense upwelling...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...ion event would trigger a noticeable phytoplankton bloom near the mouth of the Yaqui River, which is locate...ts per year, and right after each one, you'd see a bloom appear within a matter of days." Each bloom was enormous, he said, covering from 19 to 223 square m...

Virginia Tech, Nanjing Institute researchers discover half-billion year-old fossils

... with skeletons and familiar morphologies began to bloom about 540-520 million years ago," Xiao said, "However, classic Ediacara fossils are mostly preserved in sandstone, and the coarse sand grains limit how much we can learn about the fine-scale morphologies of these fossils." Partly because of this lim...

New genetic test can detect clam disease

...the shellfish and will wash away once the red tide bloom diminishes, eventually making the shellfish safe to eat. QPX kills the clams, and there is no known cure. Gast is working with Roxanna Smolowitz, a veterinarian at the nearby Marine Biological Laboratory, to find out what triggers the organisms to r...

NRL scientists detect 'milky sea' phenomena

... colonies of bacteria associated with a microalgal bloom in the surface waters. Because of the lack of scientific observations, a full explanation of milky seas has remained elusive. With the current state of satellite technology, and sampling limitations, remote sensing researchers have generally thought ...

Genetic snooze button governs timing of spring flowers

...e of the mystery of how plants pace the seasons to bloom at the optimal time of year. "Flowering at the r... those flower-blocking genes off, so that they can bloom and complete their pre-ordained life cycles. But how that gene was turned off was a mystery until ...

Harmful Algal Blooms monitored from space in Chile

...ch occur when some algae species producing poisons bloom rapidly in water, causing physical or biochemical damage to fish and shellfish. Early detection of Harmful Algal Blooms (HABs) allows fish farmers to make timely key decisions in order to minimise the damage to aquaculture. To aid in this effort, a...

Researchers link ocean organisms with increased cloud cover and potential climate change

...d over an area of the Southern Ocean where a large bloom of phytoplankton was occurring. Based on satellite data, the researchers hypothesized that airborne particles produced by oxidation of the chemical isoprene ?which is emitted by the phytoplankton ?may have contributed to a doubling of cloud droplet ...

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