OREGON STATE UNIVERSITY

marine science and the coast

New research sheds light on Earth's largest animals

HONOLULU - Blue whales, the planet's largest animals, travel much farther and faster than scientists ever thought, searching for fertile marine upwelling zones that provide their diet of krill and help them grow as large as a hundred feet long and weigh in at a staggering 100 tons.

These and other findings on blue whales will be presented on Thursday, Feb. 14, by Oregon State University marine mammal expert Bruce Mate at a meeting of the American Geophysical Union's Ocean Sciences division in Honolulu.

Since 1993, Mate and his colleagues have tagged one hundred blue whales off the California coast and tracked their movements by satellite.

They found that blue whales travel rapidly from one feeding area to another, and continue to feed throughout the entire year. Other whales, including grays and humpbacks, stop feeding during their late fall migration and while at their winter breeding grounds --- areas that, in comparison to their summer feeding areas, are "biological deserts," Mate said.

"These blue whales move fast," said Mate, who directs the Marine Mammal Program at Oregon State University. "They are like a streak. They can't afford to waste a lot of time in low-density food zones, so they really move from one high productivity area to another."

During the strong El Nino of 1998, about half of the blue whales Mate saw were visibly emaciated. Their rapid movement in search of food and their normally huge fat reserves are adaptations that help them survive such events, Mate pointed out.

The feeding habits of these California blue whales in fact dictate much of their behavior, Mate said. Like other whale species, they begin migrating southward in the fall, but individual whales stop when they encounter good feeding zones and may stay there for weeks at a time, whereas many other whales species migrate en masse and do not make such stops. Even the blue whales' winter destination and likely calving area --- a region off Central America called the Costa Rica Dome --- is a fertile upwelling site rich with krill.

By contrast, most gray whales head to the warm waters of lagoons along the Pacific coast of Baja California for calving, while humpbacks head to Hawaii. The warm waters in these areas help conserve body heat of newborn calves, but neither location has much in the way of food for the adults.

Much of these data about blue whales is new, Mate said. Despite being the planet's largest animals, little was known about the migration and winter habits of blue whales until scientists developed new technologies to study them.

Many of these new tools --- including the tags --- were developed at Oregon State University.

"In the old days, we would tag a whale and have to follow it by boat to stay within five miles, because that's how far the signal traveled," Mate said. "If it got out of range, that was it. And we could only track one animal at a time.

"Now we receive data on 15-20 blue whales simultaneously, as well as several other species," he added. "The technology is getting better all the time. It isn't unusual now to track whales via satellite for 4-5 months, and we tracked one blue whale for 307 days before the batteries were exhausted. That provides a lot of data."

Of the hundred whales Mate has tracked, 45 have provided significant long-term data. Those 45 whales traveled a composite 230,000 kilometers and dove some 2.5 million times. "One animal migrated more than 10,000 miles," he said.

The data that comes out of studies like these is significant, Mate says, because it tells scientists and resource managers where whales spend much of their time, where critical feeding and reproductive areas are located, and how much time they spend at the surface - all of which are important in estimating the population size. "Many of the productive areas for the California blue whales are just 30 miles or so offshore from San Francisco and Santa Barbara, where there is a lot of ship traffic," Mate said. "But shipping doesn't seem to have much of an effect."

Last year, Mate tagged a mother blue whale in the Sea of Cortéz and waited for her and her calf to return to California. They never did, staying off the coast of central Baja California. "That goes to show you, there are a lot of mysteries remaining," Mate said. "It was thought that all of the whales in the Sea of Cortéz were 'California whales.' The fact that a mother and her calf stayed down there is interesting; if those movements are typical, it may suggest that we've been underestimating calf production and perhaps the entire population."

This spring, Mate is planning to tag more blue whales in the Sea of Cortéz. Scientists estimate that there are about 2,100 blue whales off the coast of California each summer, which is about 25 percent of the world's population and the largest concentration on the planet. These whales will grow as large as 85 feet and 80 tons, while blue whales in the southern hemisphere may reach 100 feet and 120 tons.

An estimated 7,000-8,000 true blue whales are thought to live throughout the world. Mate's research is funded by the Marine Mammal Endowment at Oregon State University and by the Office of Naval Research.

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Bruce Mate, 541-867-0236

OSU scientist to lead cruise to Arctic in July

CORVALLIS - Oregon State University oceanographer Kelly Falkner is leading a 28-day international research expedition aboard the U.S. Coast Guard icebreaker Healy this summer to study the role the Arctic Ocean plays in the global water cycle.

The cruise, which begins July 21, will include researchers from the U.S., Canada and Japan who are seeking to better understand how much seawater and ice flow south through the Nares Strait. The amount and timing of these flows affects North Atlantic waters and global ocean circulation, which is influenced by temperature and salinity. Over the past decade, scientists have observed significant changes throughout the North Atlantic. The head of Nares Strait sits at the confluence of major water mass boundaries within the Arctic that have recently been observed to shift, possibly in response to changed atmospheric pressure patterns.

The five-year, $3.5 million project involves about 50 scientists from several research institutions. During the cruise, researchers will take water samples and place instruments on the seafloor in Baffin Bay, Kane Basin and Kennedy Channel. The instruments will measure ocean currents, sea level, temperature and salt content over a three-year period.

To study conditions that may have occurred over several decades, researchers will collect bivalves and water samples along the Canadian and Greenland sides of the Nares Strait. Clams lay down their shells in distinct annual layers; the chemical composition of those layers can offer clues to the environmental conditions that existed at that time.

To study flows that occurred hundreds or thousands of years ago, scientists will collect four sediment cores from the seafloor in North Baffin Bay. Analysis of the sediment cores should reveal environmental conditions over time. In addition, researchers will attempt to collect detailed maps of the seafloor in this area.

Falkner, an associate professor in OSU's College of Oceanic and Atmospheric Sciences, is involving local citizens in the research project. A new Canadian territory created in 1999 called Nunavut, which means "our land," covers 2 million square miles of Canada, and is home to 29,000 people in 26 communities. Falkner has visited the area, and engaged a first-year local college student, Pauloosie Akeeagok, to assist with the clam retrieval portion of the project.

"Pauloosie is a hunter, and is familiar with the behavior of walrus and eider ducks, both of which eat clams," said Falkner.

Akeeagok will assist in locating these wildlife and the clam beds, said Falkner, who also is seeking participation from the Greenland community.

"We hope to learn about the environment from its local residents, whose people have a long and rich history in the region, as we share our observations of it with them," said Falkner.

Source: 

Kelly Falkner, 541-737-3625

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Baffin Bay
Baffin Bay

Summer HMSC visitors can keep in daily touch with research

NEWPORT - Summer visitors to Oregon State University's Hatfield Marine Science Center can take part in the latest research at sea.

The center is a major ocean science facility for the university and its sprawling campus at Newport's South Beach area covers more than 200,000 square feet. It is home to 11 federal, state and other agencies sharing space with five OSU programs. The Visitor Center is HMSC's window to the world, a 10,000-square-foot display area where people can learn about how science works and what it has taught us about the ocean. Admission to the visitor center is free, with a donation requested.

The centerpiece of this summer's activities is OceanQuest, according to Bill Hanshumaker, marine education specialist at the center. OceanQuest is a connection between ongoing marine research and the HMSC Visitor Center. Beginning July 1, there will be a presentation about what's going on at sea based on the most current data posted daily from the research vessel at sea. The hourlong programs begin at 1:30 p.m. and will be offered seven days a week.

"It's as current as we can make it," Hanshumaker said. "It will focus on the researcher, the research vessel, the scientific question, the equipment, and how they're going to answer that question."

At the end of the summer, Hanshumaker will switch places, going from the Henning Auditorium to the R/V Thompson, which is studying ocean vents. Hanshumaker will send digital pictures of research each day, as scientists explore Oregon's undersea volcanoes and geothermal vents through Sept. 10.

Also at the Visitor Center this summer will be free daily guided walking tours of the Yaquina Bay estuary. The HMSC manages 250 acres of estuary habitat. The daily walking tour begins every day at 11 a.m. and will last about an hour. It will cover a paved, wheelchair accessible path. Topics will include plants, the mudflats, birds and other wildlife, and how the center staff manages them.

The Visitor Center also features touch tanks featuring live sea and tidepool animals, including an octopus, and an interactive ROPOS exhibit. ROPOS, the Remotely Operated Platform for Science, is an undersea vehicle used to explore the ocean's depths. The exhibit simulates a ROPOS dive, with the operator sitting at a console with a joystick, watching videos shot at the bottom of the ocean through interactive computer software.

The HMSC Visitor Center is open from 10 a.m. to 5 p.m. seven days a week, including the Fourth of July.

Source: 

Bill Hanshumaker, 541-867-0167

OSU researcher receives Heinz Award for the Environment

CORVALLIS - Jane Lubchenco, a professor at Oregon State University and one of the nation's leading marine biologists, has received the eighth annual $250,000 Heinz Award for the Environment, recognizing her studies on marine ecosystems and pioneering efforts to bridge the gaps between science and public policy.

Only six Heinz Awards, which are among the largest individual achievement prizes in the world, are given each year to national leaders in selected fields. The use of the funds is unrestricted, but Lubchenco said she plans to use it to support student education and research.

Lubchenco is the Wayne and Gladys Valley Professor of Marine Biology at OSU, a past president of both the American Association for the Advancement of Science and the Ecological Society of America, and a member of the National Academy of Sciences. She has worked with everyone from political and business leaders to environmental and religious groups, and even the president of the United States, on issues of marine conservation, biodiversity, climate change and other key environmental and scientific issues.

As an internationally recognized scientist, Lubchenco has testified about the impact of human activities on the Earth, its atmosphere, land and oceans. She is also a crusader for the communication of scientific findings to the public and policy makers, so that more people understand the difficult environmental issues the world faces and decision makers are better able to craft important environmental policies that have a solid foundation in science.

"Dr. Jane Lubchenco has been one of the most passionate voices raised in defense of the environment," said Teresa Heinz, chairman of the Heinz Family Foundation that made this award. "Here in the 21st century, as we face the possibility of drastic ecological change for the nation and the world, Dr. Lubchenco's work is more important than ever."

Among other accomplishments, Lubchenco has led efforts to establish marine reserves that preserve ocean habitats, helped encourage aquaculture to become more environmentally sustainable, and championed environmentally responsible energy practices and policies. Her innovative studies on intertidal and nearshore communities revealed both the complexity and fragile nature of marine ecosystems. In the political arena she worked to create more support for interdisciplinary research programs that cut across traditional scientific boundaries, and she has sought major increases in funding for environmental studies through the National Science Foundation.

When she began her tenure as president of the American Association for the Advancement of Science, perhaps the nation's most prestigious organization of science professionals, Lubchenco called for a "social contract" between scientists and the public.

It was essential, she said, that researchers tackle and help develop solution to the many global environmental problems facing the world. But beyond that, Lubchenco said scientists should communicate their findings more broadly and effectively, moving past the confines of professional conferences and academic journals, and share their knowledge directly with those making decisions about the environment.

Towards that end, Lubchenco co-founded in 1998 the Aldo Leopold Leadership Program, which trains some of the nation's leading scientists in how to communicate more effectively with the general public, government and agency leaders, and even individual citizens. Scientists who have participated in this program, including several from OSU, are now sharing their expertise on such topics as global climate change, infectious diseases, biotechnology, fisheries, agriculture, plant ecology, the greenhouse effect, stream ecosystems, nutrient pollution, sustainability and many other areas.

"It used to be that a scientist who was speaking out in public was criticized and even vilified by his or her colleagues for a variety of reasons," Lubchenco has said. "But many scientists now see what they have to offer the world in terms of better information about a wide variety of environmental topics."

The Heinz Awards are named after U.S. Sen. John Heinz of Pennsylvania, who died in 1991. The first awards were given in 1994, and are made in some of the areas in which Sen. Heinz was most active, including the environment; human condition; public policy; arts and humanities; and technology, the economy and employment.

Lubchenco said she plans to use the award to expand opportunities for talented students to learn about ocean protection and restoration.

"The funds will enable them to have more opportunities to do research, to improve our scientific understanding of ocean ecosystems, and to learn to share this information with diverse groups of people," Lubchenco said. "More and more students are expressing a keen interest in marine conservation and science policy, and the award will enhance the range of opportunities available to them."

Lubchenco, who received her doctorate in 1975 from Harvard University, has been on the OSU faculty since 1976. She was named a MacArthur Fellow in 1992, and has received six honorary degrees, the most recent one from Princeton University.

Media Contact: 
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Kas Maglaris, 212-843-8056

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Jane Lubchenco
Jane Lubchenco

Project to extract DNA from extinct sea otters

CORVALLIS - A project to extract DNA from the remains of animals that died hundreds, or even thousands of years ago has been awarded $10,802 in funding from Oregon Sea Grant.

Deborah Duffield and Virginia Butler, both professors at Portland State University, were notified this month that they had received the program development funds for their project, which seeks to extract and analyze the DNA from bones of sea otters found in ancient middens along the Oregon coast.

While the subject sounds sufficiently exotic to be a science fiction novel, the project is one part of an effort with a very serious goal: to reintroduce to the Oregon coast a species that was hunted to the edge of extinction during a 200-year span from the early 1700s to the 1900s.

The last Oregon sea otter was killed in 1906. The 1911 Fur Seal Treaty signed by Russia, Japan, Britain and the United States and a 1913 federal law in the United States effectively ended the harvest of the sea otter, but by that time the species was extinct in Oregon and Washington, and clinging to survival in California and Alaska.

An attempt to reintroduce sea otters in Oregon was launched in 1970, but was not successful. Thirty-one sea otters were taken from a site in Alaska and deposited on the Oregon coast near Port Orford. The next year 64 more were added to the population that survived the first year, but the colony did not last. Researchers from Oregon State University, including Ron Jameson, monitored the animals. According to Jameson, who retired from OSU in January, it was never clear exactly why the colony did not survive.

"It's one of those situations where we just don't have any evidence supporting any particular hypothesis. They produced pups, there was no huge immediate post release mortality. Suddenly, around 1975 or so, the numbers started to drop off and they effectively disappeared," he said.

Some of the animals may have moved north and joined the translocated colony in Washington, but it's difficult to say even that with any certainty, Jameson said.

"One of the things we did that was different than what we do today with translocated populations, we didn't have any kind of radio telemetry devices. Those animals weren't even tagged," he said.

"You can move sea otters to wherever you want, but they're going to choose where they want to stay," he said.

The effort to relocate sea otters to Washington's Olympic Peninsula bore better results; the otters survived and are now flourishing, growing from 59 in 1970 to more than 600 today.

In the intervening years, biologists and anthropologists argued whether the Alaska and California sea otter were the same species or genetically distinct cousins. In recent years, genetic studies support the idea that they are related but distinct subspecies. That being the case, supporters hope that finding which subspecies more closely resembles the extinct Oregon otters would result in a more successful attempt to reintroduce the animal to the state's coastal waters.

That is the aim of the project Duffield, a biologist at PSU, and Butler, an anthropologist, received funding for. Their research will focus on samples of sea otter bones and teeth found in Indian middens along the Oregon coast. The samples, mostly provided by Oregon State University anthropologist Roberta Hall, have been dated in a range from 200 to 2,000 years old.

"When there's been a coastal culture that has been using the sea otter as part of its food source and source of fur, there will often be good sized pieces of skeletal remains in the middens," Duffield said. "We have 18 really good ones, definitely sea otter."

Advances in DNA technology have made the work straightforward, if painstaking. "The technology for ancient DNA has just grown and grown in the last few years," Duffield said.

The researchers take a clean sample, "crack it or crush it," (in the case of this project the material will be frozen in liquid nitrogen and crushed,) then extract and purify the DNA.

Working with such old samples, it is difficult to extract complete DNA strands, Duffield said. But it is not necessary to have the entire sequence. Scientists can identify specific points of difference in the genes of existing California and Alaskan sea otters, and it is these markers that will be the focus of comparison with the DNA extracted from the long-dead Oregon samples.

PSU grad student Kim Valentine will perform the lab work.

Duffield agreed that the idea of extracting DNA from an extinct species smacked just a little of "Jurassic Park," the Michael Crichton novel in which DNA was extracted to allow the cloning of dinosaurs. But no one is talking about cloning the Oregon sea otter. Researchers just want to know which existing subspecies most closely resembles the extinct Oregon variety.

There is also one other important difference between science fiction and the real science she will be doing on the sea otter. "Luckily, they are much smaller" than Crichton's dinosaurs, she said with a laugh.

Source: 

Deborah Duffield, 503-725-4078

OSU alumni are invited to spend a weekend at the coast

CORVALLIS - Oregon State University alumni and supporters are invited to spend a weekend in Newport July 25-27 learning about whales, mystery writing, and getting a behind-the-scenes peek at the Hatfield Marine Science Center.

The weekend package begins with a dinner at OSU's Hatfield Marine Science Center on Friday, July 25. Following dinner, the staff will take participants for an exclusive behind-the-scenes look at the research OSU conducts at the center.

On Saturday, mystery writer Ron Lovell, a former professor of journalism and English at OSU, will discuss the art of mystery writing. Lovell's book, "Murder at Yaquina Head," was published last year. Lovell's talk will be followed by a tour of the Newport bay front and a private tour of the Yaquina Head Lighthouse, where participants will learn about OSU's latest research at the lighthouse site.

OSU President Tim White will join the tour Saturday night for a beach barbecue at the Hallmark Resort.

At Sunday's farewell brunch, Bruce Mate, one of the world's leading whale researchers, will deliver a talk, "Traveling in the Mist of a Whale's Blow: Discovering their Mysterious Habits." Mate, known worldwide for his work using satellite technology to track whale migrations, has been featured on the Discovery Channel and other television networks.

The event is sponsored by the OSU Alumni Association. The cost is $100 for association members and $110 for non members. Children ages 6-12 are $50 and children under five are free. The cost includes all activities and meals except Saturday lunch. Lodging is not included. To register call the OSU Alumni Association at 877-305-3759 or go to http://alumni.oregonstate.edu/events/weekend.html.

Source: 

Scott Elmshauser, 541-737-8883

Marine plant life sensitive to nutrient changes

CORVALLIS - A new study shows that marine intertidal plant communities are far more sensitive than had been believed to changes in available nutrients such as nitrogen.

The research, just published by Karina Nielsen from Oregon State University in a professional journal, Proceedings of the National Academy of Sciences, suggests that short- or long-term climate changes that affect coastal upwelling, in addition to over-fishing, could have a profound effect on near-shore plant life in the ocean.

It has long been known that upwelling currents, which bring nitrates and other nutrients to the near-surface of the ocean, were a key to the growth of tiny plants called phytoplankton, and most other fish in the marine food change which ultimately depend on these phytoplankton.

"Until now, however, people thought that most open-coast seaweed communities weren't really limited by nutrient availability, especially not on wave-swept shores where coastal upwelling occurs," said Karina Nielsen, an OSU postdoctoral research associate with the Partnership for Interdisciplinary Studies of Coastal Oceans, or PISCO.

"My experiments showed that there are areas along the open-coast where seaweed communities are limited by nutrients and this changes how abundant and diverse they are, especially when animals that eat seaweeds are scarce," Neilsen said. "Knowing what causes these differences along the coast shows us how changes in ocean climate and over-exploitation of marine animals can affect intertidal communities."

The findings may help scientists identify the best locations for highly productive marine reserves, Nielsen said, and may be of particular relevance to near-shore areas in the Pacific Northwest, which have some of the most abundant and diverse temperate seaweed ecosystems in the world.

In controlled experiments off the central Oregon coast, Nielsen manipulated 42 tide pools by placing small nutrient dispensers in them, releasing nitrates and phosphates, and reducing the abundance of snails, urchins and other invertebrates. The abundance of seaweeds increased up to 35 percent, shifting the whole structure of the community.

Scientists believe that changes in climate, ranging from long-term effects such as global warming to near-term effects such as the Pacific decadal oscillation, may create major changes in current movements and upwelling in many places. It's now clearer, Nielsen said, that such changes could have significant effects on marine plant life, as well as fisheries.

 

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Karina Nielsen, 541-737-8293

Pew panelist: Ocean policies haven't kept up with science

CORVALLIS, Ore. - Scientific knowledge about the oceans has increased tremendously in the last quarter century but U.S. policy for managing its territorial waters has lagged far behind the science, experts say, leading to resource depletion, pollution, habitat destruction and political polarization.

Recommendations by the Pew Oceans Commission released today (June 4) are the first step toward addressing the disparity between growing scientific knowledge and outdated national policies and practices, says Jane Lubchenco, an Oregon State University professor and one of the commission's lead scientists.

"What we know is not reflected in what we do," Lubchenco said. "We are facing historic reductions in what once was thought to be an endless bounty. It doesn't have to be that way. With more responsible, science-based stewardship, we can have sustainable, healthy and resilient ecosystems. But the framework for a coherent management plan has been missing."

One of the recommendations of the Pew Commission is the establishment of Regional Ecosystem Management Councils that would report to a new federal agency. Key components of the proposal call for regional decision-making and a management plan based on ecosystems, not individual species or narrow political jurisdictions.

Lubchenco said one of the obstacles to a sound ocean policy has been a piecemeal regulatory approach that reacts to crises instead of addressing management in a cohesive and precautionary manner.

"Recent scientific findings should be giving us a wakeup call," she said.

A scientific study reported last month in Nature determined that most of the oceans' large predator fish - including tuna, sharks, and other species - have been depleted by some 90 percent from their historic highs. Lubchenco points to other phenomena including increases in algal blooms, the proliferation of invasive species and coral bleaching events as oceanic equivalents to the canary in the coal mine.

Lubchenco said Pew Commission members held an extensive series of public hearings over three years throughout the U.S. and a common refrain was: "The ocean system is collapsing; please help fix it."

One of the problems, Lubchenco says, is that the nation hasn't taken a broad-spectrum approach to ocean management since the Stratton Commission in 1969 charted the way the country thought about our oceans.

Many worthwhile initiatives grew out of that commission, she added, including the creation of the National Oceanic and Atmospheric Administration, the implementation of the Coastal Zone Management Act and the passage of fisheries management legislation.

The commission's recommendations reflected the knowledge and attitude of the day.

"At the time, it was thought that our oceans were endlessly bountiful and infinitely resilient," Lubchenco said. "In those 30 years, we've discovered that neither is true."

Lubchenco said the area of the ocean over which the U.S. has jurisdiction encompasses an area 23 percent larger than the entire U.S. landmass - in large part because of Hawaii and Pacific territories. Yet its remoteness has led to an "out of sight, out of mind" mentality about management.

Science, common sense, and experience, she says, can help guide the nation toward sustainable ocean policies.

"Recent scientific knowledge emphasizes managing on an ecosystem basis," Lubchenco said. "A focus on single species has caused unintended problems because it ignores by-catch, invasive species, and pollution. Knowing how the pieces fit together enables smarter and less wasteful management."

"We have a wealth of information that is not being incorporated into policy and management."

Lubchenco is a principal investigator for the Partnership for Interdisciplinary Studies of Coastal Oceans. PISCO, a program supported by a pair of five-year grants totaling $20 million from the David and Lucile Packard Foundation, is studying the near-shore region of the Pacific Coast. OSU is one of four universities in the initiative, which Lubchenco says is a prototype for large-scale marine ecosystem-based research.

What she and other scientists are discovering is that the world's oceans are resilient enough to rebound if they are managed properly.

"The message is one we've learned from testing and studying marine reserves," she said, "and that is when you eliminate the destructive activities, the ocean can respond in bounteous fashion and recharge depleted areas outside the reserves. We simply need better stewardship."

If managed properly, Lubchenco says, the oceans can provide sustainable harvests of most seafood at rates well above what we have experienced over the last 20 years. "A key, though," she said, "is to acknowledge the primacy of protecting ocean ecosystems so they in turn can provide the bounty."

Media Contact: 
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Jane Lubchenco, 541-737-5337

Marine Science Center opens doors for second H.M.S. Seafest

NEWPORT - Coastal visitors are invited to dive into an ocean of discovery this summer when Oregon State University's Hatfield Marine Science Center hosts H.M.S. SeaFest 2003, a free daylong event of fun and educational activities for the family set for Saturday, June 21, in Newport.

The event will give the public an opportunity to look behind the scenes of one of the state's leading research and educational facilities. The OSU marine science center occupies more than 200,000 square feet on 49 acres, with an adjacent 250 acres of estuary habitat. Only about 10 percent of the facility - the Visitor Center - is typically open to the public.

It's a popular, free stop for visitors to the coast. But the displays only whet the appetite for a closer look at what goes on in the rest of the facility, where 11 federal, state and other agencies share office and lab space with five OSU programs.

Researchers at the facility study the marine world in all its depth and diversity. Fisheries, undersea volcanoes, marine mammals and the delicate interplay between ocean currents and weather are just a few of the many subjects studied here.

To satisfy that curiosity, the center staff offers H.M.S. SeaFest. The event is part open house, part festival, with plenty to interest visitors of all ages. The free event begins at 10 a.m. This year's activities will include:

  • Tours of the center's labs, the surrounding estuary, a skimmer that responds to oil spills, and the system that circulates thousands of gallons of seawater throughout the facility;
  • Lectures by leading scientists: The keynote address this year will be delivered by Jane Lubchenco, one of Oregon's most prominent scientist and an expert in marine ecology;
  • Children's activities, including crab races, art and coloring, and games;
  • Seafood demonstrations, and displays by recreational fishing and boating groups, local geologists and other community groups and agencies, and an art display;
  • A demonstration of a hovercraft, presented by the Environmental Protection Agency.

More information about H.M.S. SeaFest is available online at http://hmsc.orst.edu/visitor/hmsseafest.html. For accommodations related to disabilities, contact Terri Nogler at 541-867-0271 or send e-mail to terri.nogler@hmsc.orst.edu. The OSU center can be reached by taking the first exit south of the Yaquina Bay bridge.

 

Source: 

Pam Rogers, 541-867-0212

Book details new invader of Northwest waters

CORVALLIS - A book about alien invaders with hideous green claws and eyes on stalks, silently and insidiously moving in on the unsuspecting locals of some obscure backwater - must be a pulp science fiction novel, right?

Wrong. The new volume from Oregon Sea Grant tells the story of a real invader, one that is poised to cause serious trouble in the waters of the Pacific Northwest, just as it has in many other places around the world.

Oregon Sea Grant has published "Global Invader: The European Green Crab," by Sylvia Behrens Yamada. The 140-page book costs $15 and is available by writing to Sea Grant Communications, Oregon State University, 322 Kerr Administration Building, Corvallis, 97331-2131; calling 541-737-2716; faxing 541-737-7958; or sending e-mail to sea.grant.communications@orst.edu.

The European green crab, Carcinus maenus, well deserves its reputation as an international troublemaker. The crab is able to tolerate air exposure, starvation and wide ranges in temperature and salinity. It was introduced from Europe to the Atlantic coast of the U.S. almost 200 years ago and now ranges from Virginia to the southern shores of Canada's Prince Edward Island, resisting repeated efforts to eradicate it. It has spread from its European home to the southern tip of Africa, the shores of Australia and off the coast of Japan.

It was first discovered on the Pacific coast of the United States in 1989, near San Francisco Bay. It had established itself in the Pacific Northwest by 1998 and continues to spread.

Word of the European green crab's arrival in Northwest waters was troubling news to the region's fishers, ecologists, fishery managers and others. The invader is a voracious predator. It muscles out native crab species and makes it difficult for young bivalves, urchins and barnacles to establish themselves. Researchers fear that the green crab's growth in the Northwest will have serious ecological and economic effects.

Yamada's book describes the biology and life history of the European green crab, presents five case studies of green crab invasions and discusses the crab's ecological and economic impact on the Pacific Northwest. It includes line drawings and color plates of the European green crab as well as many native Northwest species for comparison.

Although directed at fishers, Extension agents, fishery managers and others who need to recognize green crabs in the course of their work, the book will also be of interest to researchers and others interested in invasive species and the Pacific Northwest coast.

Source: 

Sandy Ridlington, 541-737-0755

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European Green Crab
European Green Crab