WHOI Archives - Page 5 of 7

Acoustic survey to study right whales, fish around offshore wind projects

January 23, 2020 — Acoustic sensors on buoys and an undersea drone will be used to map out the movements of endangered northern right whales, marine mammals and fish around offshore wind energy sites, in a joint project with wind developer Ørsted and marine science institutions.

Ørsted on Wednesday announced the “Ecosystem and Passive Acoustic Monitoring” project is launching in cooperation with Rutgers University, the University of Rhode Island and Woods Hole Oceanographic Institution, in addition to the company’s 2019 agreement to support Rutgers research related to wind energy development.

Rutgers will supply a Slocum electric glider, an undersea probe that can operate autonomously for weeks at a time, periodically surfacing to transmit its data back via satellite link. Now widely used in oceanography, the glider technology will be a first for Ørsted, one of the pioneer companies in European offshore wind.

Read the full story at National Fisherman

Underwater pile driving noise causes alarm responses in squid

December 17, 2019 — Exposure to underwater pile driving noise, which can be associated with the construction of docks, piers, and offshore wind farms, causes squid to exhibit strong alarm behaviors, according to a study by Woods Hole Oceanographic Institution (WHOI) researchers published Dec. 16, 2019, in the journal Marine Pollution Bulletin.

“This study is the first to report behavioral effects of pile driving noise on any cephalopod, a group including squid, cuttlefish, and octopuses,” says lead author Ian Jones, a student in the Massachusetts Institute of Technology-Woods Hole Oceanographic Institution Joint Program in Oceanography.

Squid use natural alarm and defense behaviors like inking, jetting, and changing color and patterns on their skin for communication and also for survival when they’re trying to avoid capture. Squids’ changeable skin gives them the ability to create extraordinary camouflage, enabling them to blend into the background and avoid becoming a meal.

Jones and his colleagues in the Sensory Ecology and Bioacoustics Lab at WHOI exposed longfin squid (Doryteuthis pealeii) to pile driving sounds originally recorded near the construction site of the Block Island Wind Farm in Rhode Island. The squid exhibited the same types of natural alarm and defense behaviors when they were exposed to the noises, but it’s what they did next that surprised the researcher team.

“The alarm behaviors occurred within the first several noise impulses, but they diminished quickly within the first minute of playback,” Jones says. “That suggests a learned lack of response to the noise, as the squid perceive the noise stimulus may not pose an immediate threat, unlike the imminent threat of a nearby predator. This phenomenon is called habituation.”

Read the full story at Science Daily

Offshore Wind May Help The Planet — But Will It Hurt Whales?

December 5, 2019 — Tail! Tail!” shouts Dr. Howard Rosenbaum, a marine biologist, before grabbing his crossbow, as we close in on a humpback whale.

Rosenbaum gets into position on the bow of the boat, stands firmly with legs apart, takes aim, and fires at the 40-foot cetacean. The arrow that he releases doesn’t have a point – it has a hollow 2-inch tip to collect skin and blubber, and a cork-like stopper to prevent it from penetrating too deeply.

“Oh, yeah!” come shouts from the small research crew. The hit looks clean. Sure enough, when they scoop the floating arrow out of the water, its tip is filled with a small white sliver of whale flesh, containing DNA that will help identify the humpback and its pod and potentially say something about its migratory patterns.

This is the sort of research that Rosenbaum, the director of the Wildlife Conservation Society’s “Ocean Giants” program, has been doing for decades around the globe. Recently, though, whale monitoring has taken on a new urgency in Rosenbaum’s own native habitat — the Atlantic waters off New York City and Long Island.

As whale populations have grown, the WCS and its collaborator, the Woods Hole Oceanographic Institution, have been monitoring them, with an eye toward mediating conflicts with the ocean’s heaviest users: cargo ships, commercial fishing trawlers and the U.S. military.

Now, the whales are poised to get many new, potentially disruptive neighbors: hundreds of skyscraper-high wind turbines, rising from the ocean floor.

The New York Energy Research and Development Authority has awarded two large contracts for offshore wind and anticipates several more in the coming years. The first phase, expected to be complete by 2024, involves dozens of wind turbines in two different offshore plots, leased by energy companies from the federal Bureau of Ocean Energy Management. They would generate 1700 megawatts — enough to power more than one million homes.

Read the full story at NPR

Scientists meeting in Portland say right whales on the way to extinction

November 18, 2019 — The future continues to grow ever darker for the highly endangered right whale, a species that has been in decline every year since 2010 and is at the heart of regulatory protection efforts threatening to upend Maine’s valuable lobster fishery.

The North Atlantic Right Whale Consortium estimates only 409 whales survived 2018, down from about 428 in 2017 and 457 in 2016. With seven births and 10 documented deaths in 2019 factored in, that tally is now probably about 406. Three of those are about to succumb to injuries.

“We are in yet another year of decline for the right whales,” said Mark Baumgartner, a researcher at the Woods Hole Oceanographic Institution and chairman of the consortium, which kicked off its annual right whale meeting Thursday in Portland. “This is extremely concerning.”

The meeting attracted hundreds of scientists, policymakers, animal rights advocates and several dozen curious fishermen. Topics ranged from new developments in how to safely tag a right whale to a review of right whale deaths in 2019 to the impact of whale-related fishery closures in Canada.

Read the full story at the Portland Press Herald

Why Are Birds and Seals Starving in a Bering Sea Full of Fish?

November 4, 2019 — The shipment arrived airfreight: 47 seabird carcasses collected by the Bering Strait villagers of Shishmaref.

Marine biologist Gay Sheffield drove to the airport on an August day to pick up the grisly cargo and bring it back to a laboratory just off the main street of this northwest Alaska town.

Inside a cardboard box, Sheffield found mostly shearwaters, slender birds with narrow wings — also kittiwakes, crested auklets, thick-billed murres, a cormorant and a horned puffin. Most were painfully skinny, bones protruding like knife-edged ridges.

“They starved to death,” Sheffield said. “Why?”

The birds should have been able to fatten on small fish, krill and other food that typically abound in the northern Bering Sea, a body of water so rich in marine life that gray whales, after they winter off Mexico, swim more than 5,000 miles north to feed here each summer.

But as climate change warms the die-offs of seabirds and marine mammals have been on the rise. The grim tally includes a nearly fivefold increase in ice-seal carcasses spotted on shore, strandings of emaciated gray whales, and near the St. Lawrence Island village of Savoonga, a discouraging spectacle: auklets abandoning seaside nests as their chicks succumb to hunger.

Read the full story at the Pulitzer Center

New paper shows evidence of tuna spawning in marine protected areas

August 30, 2019 — New research showed that there is evidence of tuna spawning inside the large marine protected area of the Phoenix Islands in the Pacific nation of Kiribati.

The research conducted by MIT and the Woods Hole Oceanographic Institution points to evidence that marine protected areas (MPAs) can play a critical role in protecting adult fish, including highly migratory species such as tuna, during spawning.

Read the full story at Seafood Source

Boaty McBoatface makes major climate change discovery on maiden outing

June 18, 2019 — Boaty McBoatface’s maiden outing has made a major discovery about how climate change is causing rising sea levels. Scientists say that data collected from the yellow submarines’s first expedition will help them build more accurate predictions in order to combat the problem.

The mission has uncovered a key process linking increasing Antarctic winds to higher sea temperatures, which in turn is fuelling increasing levels.

Researchers found that the increasing winds are cooling water on the bottom of the ocean, forcing it to travel faster, creating turbulance as it mixed with warmer waters above.

Experts said the mechanism has not been factored into current models for predicting the impact of increasing global temperatures on our oceans, meaning forecasts should be altered.

Boaty McBoatface – the publicly named robotic submersible carried on the research vessel RRS Sir David Attenborough – took its first expedition in April 2017, studying the bottom of the Southern Ocean.

Read the full story at The Telegraph

University of Rhode Island to Join NOAA Cooperative Institute for the North Atlantic

May 24, 2019 — The following was released by the University of Rhode Island:

The National Oceanic and Atmospheric Administration (NOAA) announced that the University of Rhode Island Graduate School of Oceanography (GSO) will join the Cooperative Institute for the North Atlantic Region (CINAR) led by the Woods Hole Oceanographic Institution (WHOI).

Cooperative Institutes are NOAA-supported, non-federal organizations that have established outstanding research and education programs in one or more areas that are relevant to the NOAA mission. Cooperative Institutes’ expertise and facilities add significantly to NOAA’s capabilities, and their structure and legal framework facilitate rapid and efficient mobilization of those resources to meet NOAA’s programmatic needs.

CINAR will carry out innovative, multidisciplinary research that will help inform decisions for sustainable and beneficial management of the U.S. Northeast continental shelf ecosystem.

“The University of Rhode Island is pleased to have been selected among the eight leading research institutions to participate in the Cooperative Institute for the North Atlantic Region, a critical ecosystem that extends from Maine to Virginia and encompasses the marine coastlines of 11 states, as well as Vermont and the Connecticut, Delaware, Hudson and Susquehanna river watersheds,” said URI President David M. Dooley. “URI brings great depth and breadth of expertise in ecosystem management to assist in advancing our understanding of climate change and the very real challenges we face for the future.”

“URI’s Graduate School of Oceanography is delighted to be part of CINAR,” said GSO Dean Bruce Corliss. “We look forward to continuing our support of NOAA’s efforts in fisheries and coastal resilience in the New England coastal ecosystem with our partners over the next five years.”

Read the full release here

NOAA names Woods Hole Oceanographic Institution to host cooperative institute

May 20, 2019 — The National Oceanic and Atmospheric Administration (NOAA) selected Woods Hole Oceanographic Institution (WHOI) to host NOAA’s Cooperative Institute for the North Atlantic Region (CINAR).

CINAR will carry out innovative, multidisciplinary research that will help inform decisions for sustainable and beneficial management of the U.S. Northeast continental shelf ecosystem.

“CINAR research seeks to provide a better understanding of the physical, biological, and chemical processes that enable forecasting conditions within the North Atlantic region as a tool for effective, ecosystem-based management and protected-species management,” said CINAR Director Don Anderson. “An important aspect of this approach includes interdisciplinary research to understand and forecast climate change, and the associated impacts to natural systems and communities.”

The partners working with WHOI include the University of Maine, University of Massachusetts Dartmouth School for Marine Science and Technology, University of Rhode Island, Rutgers University, University of Maryland Eastern Shore, University of Maryland Center for Environmental Science, and the Gulf of Maine Research Institute.

Read the full story at the EurekAlert

North Atlantic Ocean productivity has dropped 10 percent during Industrial era

May 7, 2019 — Virtually all marine life depends on the productivity of phytoplankton — microscopic organisms that work tirelessly at the ocean’s surface to absorb the carbon dioxide that gets dissolved into the upper ocean from the atmosphere.

Through photosynthesis, these microbes break down carbon dioxide into oxygen, some of which ultimately gets released back to the atmosphere, and organic carbon, which they store until they themselves are consumed. This plankton-derived carbon fuels the rest of the marine food web, from the tiniest shrimp to giant sea turtles and humpback whales.

Now, scientists at MIT, Woods Hole Oceanographic Institution (WHOI), and elsewhere have found evidence that phytoplankton’s productivity is declining steadily in the North Atlantic, one of the world’s most productive marine basins.

In a paper appearing today in Nature, the researchers report that phytoplankton’s productivity in this important region has gone down around 10 percent since the mid-19th century and the start of the Industrial era. This decline coincides with steadily rising surface temperatures over the same period of time.

Matthew Osman, the paper’s lead author and a graduate student in MIT’s Department of Earth, Atmospheric, and Planetary Sciences and the MIT/WHOI Joint Program in Oceanography, says there are indications that phytoplankton’s productivity may decline further as temperatures continue to rise as a result of human-induced climate change.

“It’s a significant enough decine that we should be concerned,” Osman says. “The amount of productivity in the oceans roughly scales with how much phytoplankton you have. So this translates to 10 percent of the marine food base in this region that’s been lost over the industrial era. If we have a growing population but a decreasing food base, at some point we’re likely going to feel the effects of that decline.”

Osman and his colleagues looked for trends in phytoplankton’s productivity using the molecular compound methanesulfonic acid, or MSA. When phytoplankton expand into large blooms, certain microbes emit dimethylsulfide, or DMS, an aerosol that is lofted into the atmosphere and eventually breaks down as either sulfate aerosol, or MSA, which is then deposited on sea or land surfaces by winds.

Read the full story at MIT News