Tag: "plankton" at biology news
Sea change: Skeletons of ancient corals different from today's
... rest of the day. Ries fed the growing corals with plankton
particles, and monitored each tank's pH level -- and level of chemicals such as strontium, iodine and manganese, as well as vitamins -- several times a week. Ries credits his experiments with leading to "two very important discoveries about...
Plankton cool the southern hemisphere
Dutch research has shown that marine plankton
have the greatest effect on the climate in the southern hemisphere, even though the majority of plankton
are found in oceans in the northern hemisphere. Mtinkheni Gondwe used satellite observations to fol...
Census of Marine Life - Discoveries and Highlights 2004: Scientists add 4m+ records, 13,000 species
...ound in, on and above the seabed, from microscopic plankton
to whales, recorded over the past few hundred year...ed submersibles, sonar data showing deep donuts of plankton
ten km wide, and photographs of many probable new species among 80,000 specimens collected. Arc...
Please, do disturb
...system, as is the growth and receding of blooms of plankton
in the sea. Such systems do not become excited by ...unt, then they give it their all: neurons fire and plankton
blooms. "Similarly, excitable non-linear behaviour is also found in chemical reactions", explains Z...
Scientists propose new approach to estimating global ocean productivity
...work with colleagues to refine ecosystem models of plankton
production at Princeton, UMaine and other institutions....
Searching the depths of the straits of Florida for disease cures
...n channel that funnels water as well as larvae and plankton
from throughout the Caribbean, in all likelihood making for a unique habitat that will yield numerous interesting and potentially lifesaving samples during submersible dives as deep as 3,000 feet. The team will also conduct daily scuba dives in searc...
Currents could disrupt ocean food chain
...When the Atlantic Conveyer current works, the dead plankton
sink to the bottom and are replaced at the surface...hough the system is a global one. Still, he added, plankton
production would also decrease in the Pacific if the current was reduced....
Israeli, U.S., German researchers unveil remarkable behavior of ocean plankton
...tical currents. Swimming in this manner allows the plankton
to keep their depth, a behavior which was postulated long ago but had never been measured in the ocean until now. The scientists say it is remarkable that the small zooplankton are capable of remaining at a constant depth with such high precision in ...
Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton
...nts. Swimming against vertical currents allows the plankton
to keep their depth, a behavior which was postulated long ago but had never been measured in the ocean until now. The results were captured during three experiments lasting several weeks at two sites in the Red Sea's Gulf of Aqaba, near the c...
Study in Royal Society journal on heritability of female orgasm
...some of the smallest (but most important globally) plankton
this assumption may not be valid. Spatial variability in plankton
may therefore constitute a serious contamination of time-series data. Contact: Dr Adrian Ma...
Plankton can run, but can't hide from basking sharks
...world's second largest fish and feeds by filtering plankton
from sea water through its enormous mouth. It is able to filter up to 2,000 tons of water per hour - the equivalent of an Olympic-sized swimming pool. It is harmless to humans, but has been netted and harpooned for its oil which was burned in lamps a...
Hidden sponges determine coral reef's nutrient cycle
...tes, i.e. they would have removed all of the small plankton
from it. This is of course not the case, as there ...capacity to convert enormous quantities of organic plankton
into inorganic material. The results from Scheffers' research have been made available to the perso...
Sequencing our seas
...ll-studied region of the open ocean with regard to plankton
ecology, biogeochemistry and physical oceanography, making it an ideal collection site for this work," said Philip Taylor, director of NSF's biological oceanography program, which co-supported the work. "The HOT program provided the opportunity to pl...
Phytoplankton bounce back from abrupt climate change
...ding to a Penn State geoscientist. "Populations of plankton
are pretty resilient," says Dr. Timothy J. Bralowe...ears of deposition, to locate populations of these plankton
during three periods of abrupt climate change. These abrupt changes were caused either by Oceanic A...
The rising tide of ocean plagues: How humans are changing the dynamics of disease
...To detect these harmful blooms, scientists monitor plankton
and domoic acid levels in mussels. In California, harvesting of mussels and other shellfish is banned when their tissues contain levels of domoic acid over the deadly 200 parts per million. At lower levels, however, there is no public warning syste...
Controlling algal blooms
Diatoms, highly successful photosynthetic plankton
responsible for 40% of the net primary production in the oceans, undergo seasonal population explosions called phytoplankton blooms that attract billions of krill, copepods, and other grazing predators. As a defense, wounded diatoms release aldehyde ...
... populations. What goes on during this time in the plankton
is largely unknown. "What we found is that warm summer waters here are conducive to rapid larval growth, but other factors sometimes interfere, leading to highly variable settlement rates." According to Sponaugle, it is important to understand how a...
Red Tide causes sea turtle die-off in El Salvador
... which is produced by the species of algae and sea plankton
that cause the phenomenon known as "Red Tide." "The rapid response and subsequent diagnosis in this outbreak demonstrates the power of collaboration among governments and non-governmental organizations," said White, who collected tissue samples in J...
Scientists discover interplay between genes and viruses in tiny ocean plankton
...obes like Prochlorococcus, the sea's most abundant plankton
species. The ocean viruses, which carry their own genes as well as transport others, provide a way of transferring genes from old cells into new ones. "We're beginning to get a picture of gene diversity and gene flow in Prochlorococcus," Chisholm sai...
Ocean acidification threatens cold-water coral ecosystems
...s and other marine organisms (e.g. some species of plankton
and mollusks) use carbonate ions to build their sk...uction in the growth of both the corals and marine plankton
species that make their shells from aragonite. As the oceans become more acidic, corals are expected...
1 2 3