Tag: "underwater" at biology news
'Dead zone' summer killed billions of ocean state mussels
...he bay's surface, Brown University ecologists went underwater
and discovered a massive mussel die-off. In a survey of nine mussel reefs located in the central bay, researchers found one reef completely wiped out. Of the remaining eight, seven were severely depleted. The ecologists estimate that the number of mu...
In undersea habitat, aquanauts learn about teamwork and task performance for the moon and Mars
...Aquarius off the Florida coast. Aquarius, the only underwater
laboratory in the world, is owned and funded by th...ing, little glitches occur with devices used in an underwater
space. Part of our project asked crew members to communicate how well the procedures and technologi...
Whale bubble nets, saxophone sounds, ultrasonic laser
...n Norway and Iceland work cooperatively to perform underwater
tail slaps that stun herring prey. Icelandic kille...the size, location, and geographic extent of large underwater
earthquakes, and hence their potential to create tsunamis (2aAO2). Peter Gerstoft of Scripps ( gerst...
Exxon Valdez oil found in tidal feeding grounds of ducks, sea otters
... wildlife for decades." The Exxon Valdez stuck an underwater
rock formation on March 24, 1989, spilling 11 million gallons of heavy crude oil into the Sound over the next several days. Despite massive clean-up efforts, Short estimates about six miles of shoreline is still affected by the spill and as much as 1...
Dolphins at risk
...lenose dolphins may have been hurt by pollution or underwater
noise. Author, Dr. Jonathan David, MCIWEM, suggests that mitigation measures be put in place to help prevent any adverse impacts upon dolphin populations. Operations should be restricted to low tide and suspended during calving season, an exclusion ...
RIT students design deep-sea explorer to search for Lake Ontario shipwrecks
...m of RIT engineering majors built the explorer, an underwater
remote-operated vehicle, or ROV--and it has been d...water. A 100-minute battery life allows it to stay underwater
longer than human divers. Future enhancements may include the addition of a mechanical arm and exten...
... using advanced sonar technology and an autonomous underwater
vehicle (AUV). AUVs operate without a tether to the surface and are pre-programmed to independently perform tasks. These researchers believe this is the first time an AUV has been used for mapping deepwater coral reefs. AUVs have been frequently u...
Drug discovery team to explore newly discovered deep-sea reefs
... habitats off Miami and Bimini using an autonomous underwater
vehicle (AUV) equipped with advanced sonar technology. AUVs operate without a tether to the surface and are pre-programmed to independently perform tasks. AUVs have been frequently used in oil exploration and also in a variety of other research progr...
Study outlines eruption at undersea volcano
...ations ever of a volcano, thanks to the help of an underwater
robot. "We were forced to evacuate the remotely operated vehicle, 'Jason II,' several times to avoid getting it enveloped in volcanic clouds," said Bill Chadwick, an Oregon State University volcanologist and one of the authors of the study. "But at o...
Seafloor observatory opens portal to the Pacific
...st interactive, real time portal to the ocean. Its underwater
network of fibre optic cables and instruments, whi...rine mammal movements; seafloor community ecology; underwater
noise pollution; sediment and slope dynamics; and plankton behaviour....
Healthy coral reefs of Madagascar resisting damage from climate change
...ld R. Allen, a leading ichthyologist who conducted underwater
fish surveys on the expedition. Jean Maharavo of Madagascar's National Center for Environmental Research, who took part in both expeditions, noted that much of the island nation's marine biodiversity has yet to be studied. "During each of these two e...
French-German cooperation extended
...ast years, on deep sea research, remotely operated underwater
vehicles, and on marine technology. A new virtual ...greement. Operation of Ifremer's remotely operated underwater
vehicle 'Victor 6000' from the flagship of the Alfred Wegener Institute, the research icebreaker Pol...
Oceanic invasions across Darwin's impassable barrier
...as a major change in currents or the sinking of an underwater
platform that could have served as a stepping stone," Lessios points out. "If that were the case, several species would have shown coincident times of separation." Instead, the researchers consider that fish larvae cross the barrier often enough to...
Corals switch skeleton material as seawater changes
...etary Sciences at Johns Hopkins. Reefs are large underwater
structures of coral skeletons, made from calcium carbonate secreted by generation after generation of tiny coral polyps over sometimes millions of years of coral growth in the same location. The team showed that corals can switch from using aragonite...
Caulerpa Taxifolia Eradication
... because of its ability to devastate and overwhelm underwater
ecosystems, was popular in home aquariums and likely introduced accidentally into California's waters several years ago. Legislation in 2001 made it illegal to sell, possess, or transfer Caulerpa taxifolia and eight other similar looking Caulerpa sp...
Alternative approaches to marine management prove successful in reef conservation
...fit to the community. The researchers performed underwater
censuses of key reef features, and found that two--the average size and biomass of targeted fish species--were found to be different in managed areas compared to similar non-managed areas. A key finding was that three of the four sites that exhibited...
Marine 'dead zone' off Oregon is spreading
...sending data in near real-time. In addition, a new underwater
unmanned vehicle equipped with sensors to measure temperature, salinity, chlorophyll and dissolved oxygen is routinely sampling across central Oregon waters. During normal years, cold water rich in nutrients but low in oxygen upwells from the deep oc...
Top researcher-educators receive Presidential Early Career Award for Scientists and Engineers
...sticated experiments for the control of biomorphic underwater
vehicles deployed in close proximity to one anothe...ically improve the collective energy efficiency of underwater
vehicles. The research will have a significant impact in several areas of science and engineering by...
Ocean microbe census discovers diverse world of rare bacteria
...pling locations included a hydrothermal vent on an underwater
Pacific volcano 480 km (300 miles) off the coast of Oregon, as well as several North Atlantic sites between Greenland and Ireland. The most unusual sequence tags come from organisms present in low abundance, and these bacteria make up the 'rare bio...
Study shows hope for ridding lakes of clawed invader
... thousands of lakes and streams, clear cutting the underwater
forests that are critical fish habitat, evicting the native crayfish from one body of water after another and scooping up fish eggs like so much caviar. But the clawed invader, the early results of a long-term University of Wisconsin-Madison study ...
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