Tag: "seabed" at biology news
Byproduct of water-disinfection process found to be highly toxic
...dide because of the chemical makeup of the ancient seabed
under the water source. Local water sources lead to different DBPs. Whether the types of iodoacids found in Corpus Christi's treated water might be simply a reflection of local conditions, and thus a rare occurrence, is not known. The DBPs ...
Ocean scientists assess impact of seismic pulses in effort to protect whales
...y some 100 vessels worldwide to penetrate into the seabed
for oil exploration and geophysical research, with an estimated 15 to 20 active on any given day. Researchers from the Lamont-Doherty Earth Observatory of Columbia University conducted tests in the northern Gulf of Mexico in 2003, using the 20-gun ar...
Tracking climate change
...iberia. Extracting sediments from below the Arctic seabed
is a major logistical exercise. The expedition will therefore be carried out by three icebreakers: the Vidar Viking, a specially equipped drillship, the Swedish Oden and the Russian nuclear-powered icebreaker, Sovetskiy Soyuz. The drillings will be c...
First view of giant crabs - at home on the slope
...ed in waters of 150-350 metres depth to assess the seabed
habitats of the giant crab (Pseudocarcinus gigas) ...itat features, evaluating ecosystem links with the seabed
habitats and assessing the abundance, sex, condition and size of the giant crabs. "The crab trap fis...
Fishing for photos of rare or unknown deep-sea creatures with an electronic jellyfish lure
... Widder hopes to leave the systems deployed on the seabed
at various sites for long time periods to get a more complete view of life in the deep....
Ocean aquaculture: Technology, business practices, policies & caviar
...t least 300 long lines. Sea scallops, if grown by seabed
seeding, could be "marginally profitable at loss rates as high as 50 percent (based on 100,000 pound yield) with a $4 per pound market price," says Kite-Powell. He notes that cage-cultured scallops would have a lower risk of loss, but have higher op...
May media highlights: GEOLOGY and GSA TODAY
... flow that has a strong affect on aquatic life and seabed
sediments. The Marmara Sea Gateway (narrow straits of Dardanelles and Bosphorus, and deep intervening Marmara Sea) provides a set of natural flow valves (and sediment traps) that in principle should contain a record of the reconnection. Using ~7500 l...
Military technologies and increased fishing effort leave no place for fish to hide
...systems that reveal every crack and contour of the seabed
in exquisite detail. Today the U.S. Geological Sur...s are also weighing in, selling the secrets of the seabed
for short-term profit. Guided by precision satellite navigation systems, fishers can now drop nets i...
Stratified seawater disrupts the transport of imposex substances
... from antifouling paint on ships, do not reach the seabed
directly if the sea is vertically stratified in di...etween pollution from shipping and damage to local seabed
life does not appear to apply when the water is stratified year round. To the north of the Dogger Ba...
Analysis of impact studies reveals how bottom fishing affects seafloor denizens
...dwelling fish and shellfish often disturb both the seabed
and the organisms living within or on it. The potential impact of this disturbance has become a subject of heated debate because of the widespread use of bottom fishing gear and the ability to visualize its effects with underwater photography. To add...
7,000 feet under the Sea: LSU scientists take geology to great depths
...too hot and pressurized. When methane reaches the seabed
through passages provided by geologic faults, it is either contained in ice forms called hydrates, or released into the water and then into the atmosphere, where it may cause damage to the environment. Hydrates hold about 160 times more methane tha...
Catastrophic draining of huge lakes tied to ancient global cooling event
...arber. In addition, fossil clams from the Labrador seabed
corresponding to thefreshwater flood were radiocarbon-dated to about 8,200 years ago. In addition, oxygen isotopes from the shells of tiny, plankton-likeorganisms from the same age of sediments showed the creatures lived in lesssalty water ab...
Ancient Antarctic Environment Rocked By Volcanic Eruptions
...ly been discovered in rock coresretrieved from the seabed
as part of an international ocean-floor drillingpr...any, Italy and New Zealand, have been drilling the seabed
to obtain samplesthat would illustrate the climatic and geologic history of Antarctica during thelas...
Handfish Steps Back From Brink Of Extinction
...t of starfish feeding on egg masses or disturbing seabed
communities. However, habitat modification through urban, rural and industrial development of the Derwent system are other possible causes. Spotted handfish have a low breeding capacity, the female laying only 80-100 very large eggs which are ...