Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Divers find new species in Aleutians

06.11.2007
There are unknown creatures lurking under the windswept islands of the Aleutians, according to a team of scientific divers from the University of Alaska Fairbanks.

This summer, while completing the second phase of a two-year broad scientific survey of the waters around the Aleutian Islands, scientists have discovered what may be three new marine organisms. This year's dives surveyed the western region of the Aleutians, from Attu to Amlia Island, while last year's assessment covered the eastern region.

During the dives, two potentially new species of sea anemones have been discovered. Stephen Jewett, a professor of marine biology and the dive leader on the expedition, says that these are "walking" or "swimming" anemones because they move across the seafloor as they feed. While most sea anemones are anchored to the seabed, a "swimming" anemone can detach and drift with ocean currents. The size of these anemones ranges from the size of a softball to the size of a basketball.

Another new species is a kelp or brown algae that scientists have named the "Golden V Kelp" or Aureophycus aleuticus. According to Mandy Lindeberg, an algae expert with NOAA's National Marine Fisheries Service and a member of the expedition, the kelp may represent a new genus, or even family, of the seaweed. Up to ten feet long, the kelp was discovered near thermal vents in the region of the Islands of the Four Mountains.

... more about:
»Aleutian »anemone »dive »new species »species

"Since the underwater world of the Aleutian Islands has been studied so little, new species are being discovered, even today," said Jewett. He adds that even more new species may be revealed as samples collected during the dives continue to be analyzed.

The organisms were found while surveying more than 1000 miles of rarely-explored coastline, from Attu to the Tigalda Islands. Logging more than 300 hours underwater, the divers collected hundreds of water, biological and chemical samples during 440 dives. Armed with underwater cameras and video cameras, the divers took hundreds of photographs and dozens of short movies of the creatures that inhabit the coast of the Aleutians.

According to Jewett, the scientists are reasonably sure that the kelp is a new species, but more work is being done to confirm that the sea anemone species are completely new to science. Correspondence with anemone experts has so far shown the anemones to be new species, but the analysis is ongoing.

During both years, the chief scientist on the project was Douglas Dasher, a water quality expert from the Alaska Department of Environmental Conservation. The scientific team operated from the R/V NORSEMAN, a 108-foot vessel originally designed for crab fishing in the Bering Sea.

The dives were part of a broad health assessment of the Aleutian Islands and were sponsored by the Alaska Environmental Monitoring and Assessment Program, also referred to as AKMAP. The program is funded by the Environmental Protection Agency and managed through a joint agreement between the ADEC and UAF.

Samples from the dives are being used to catalog biodiversity in the region, assess water quality and potential contaminants. According to Jewett, this is the first time the remote nearshore region of the Aleutian Chain has undergone an in-depth marine assessment.

Not immune from human impacts

The rugged and remote islands of the Aleutians are not immune to the reach of human activity, say scientists leading the expedition.

"Pollutants traveling through air and water pathways from temperate latitudes have been showing up in the area," says Jewett. "Debris and spills from World War II in the Aleutians have left their mark behind in unexploded ordinance and local sources of pollutants."

Scientists on the project are using water and tissue samples collected during the dives to gauge the impacts of human activity in the area. Samples are being tested for nutrient and oxygen levels in the water, acidity, temperature and radioactive chemicals left over from the underwater nuclear tests conducted at Amchitka Island between 1965 and 1971.

"Climate change, with changes in water temperature, wind patterns and currents may impact the region's biological life," added Jewett. "It is important that we collect this information before any major changes occur."

Jewett, Dasher and the other scientists on the expedition hope that this assessment will help scientists gauge the overall health of the Aleutian Islands, both to provide a baseline for future comparison and to provide a general evaluation of the region's marine conditions.

A unique diving experience

Diving to a maximum depth of 60 feet along 1000 miles of mostly uninhabited coastline is an extraordinary experience, says Jewett.

"This is my fourth diving mission in the Aleutians," said Jewett. "In my view, it's the best cold-water diving experience in the Northern Hemisphere, because of the outstanding visibility, coupled with the diverse and colorful marine life."

Selected images from the dives are available at www.sfos.uaf.edu/emap.

UAF divers on the expedition included Reid Brewer, marine advisory program agent in Unalaska; Max Hoberg, marine taxonomist; Heloise Chenelot, research technician; and Shawn Harper, a graduate student studying marine biology. ADEC scientists included Jim Gendron, Terri Lomax and Nic Dallman. Other members of the scientific team included Roger Clark, a marine taxonomist with NOAA, and Roger Deffendall, a volunteer diver from Unalaska.

The Aleutian Islands dives support the National Coastal Assessment Program, a nation-wide project to characterize the U.S. nearshore coastline. AKMAP methods provide a practical, cost-effective system to characterize Alaska's coastal and surface waters. The AKMAP team has already sampled the marine waters off of Alaska's southcentral and southeastern coasts. The western Aleutians section of the program is the fourth of five planned surveys to assess Alaska's entire coastline.

The UAF School of Fisheries and Ocean Sciences conducts world-class marine and fisheries research, education and outreach across Alaska, the Arctic and Antarctic. More than 60 faculty scientists and 160 graduate and undergraduate students are engaged in building knowledge about Alaska and the world's coastal and marine ecosystems. SFOS is headquartered at the University of Alaska Fairbanks, and serves the state from facilities located in Seward, Juneau, Anchorage and Kodiak.

This may be another new species of anemone. Photo by Heloise Chenelot.

ContactContact:
Stephen Jewett
UAF School of Fisheries and Ocean Sciences
Phone: 907-474-7841
E-mail: jewett@ims.uaf.edu
Faculty webpage
Carin Bailey
Public Information Officer
UAF School of Fisheries and Ocean Sciences
Phone: 907-322-8730
E-mail: bailey@sfos.uaf.edu

Carin Bailey | EurekAlert!
Further information:
http://www.sfos.uaf.edu

Further reports about: Aleutian anemone dive new species species

More articles from Life Sciences:

nachricht The birth of a new protein
20.10.2017 | University of Arizona

nachricht Building New Moss Factories
20.10.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Terahertz spectroscopy goes nano

20.10.2017 | Information Technology

Strange but true: Turning a material upside down can sometimes make it softer

20.10.2017 | Materials Sciences

NRL clarifies valley polarization for electronic and optoelectronic technologies

20.10.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>