New Bedford Harbor pollution prompts PCB-resistance in Atlantic killifish
For four decades, waste from nearby manufacturing plants flowed into the waters of New Bedford Harbor—an 18,000-acre estuary and busy seaport. The harbor, which is contaminated with polychlorinated biphenyls (PCBs) and heavy metals, is one of the EPA’s largest Superfund cleanup sites.
It’s also the site of an evolutionary puzzle that researchers at Woods Hole Oceanographic Institution (WHOI) and their colleagues have been working to solve. (more…)
Over the past two decades, ice loss from the Greenland Ice Sheet increased four-fold contributing to one-quarter of global sea level rise. However, the chain of events and physical processes that contributed to it has remained elusive. One likely trigger for the speed up and retreat of glaciers that contributed to this ice loss is ocean warming.
A review paper by physical oceanographers Fiamma Straneo at Woods Hole Oceanographic Institution (WHOI) and Patrick Heimbach at MIT published in Nature explains what scientists have learned from their research on and around Greenland over the past 20 years and describes the measurements and technology needed to continue to move the science forward. (more…)
Ocean researchers working on the coral reefs of Palau in 2011 and 2012 made two unexpected discoveries that could provide insight into corals’ resistance and resilience to ocean acidification, and aid in the creation of a plan to protect them.
The team collected water samples at nine points along a transect that stretched from the open ocean, across the barrier reef, into the lagoon and then into the bays and inlets around the Rock Islands of Palau, in the western Pacific Ocean. With each location they found that the seawater became increasingly acidic as they moved toward land. (more…)
Great white sharks—top predators throughout the world’s ocean—grow much slower and live significantly longer than previously thought, according to a new study led by the Woods Hole Oceanographic Institution (WHOI).
In the first successful radiocarbon age validation study for adult white sharks, researchers analyzed vertebrae from four females and four males from the northwestern Atlantic Ocean. Age estimates were up to 73 years old for the largest male and 40 years old for the largest female.(more…)
Equipped with high-speed, high-resolution video, scientists have discovered important new information on how marine snail larvae swim, a key behavior that determines individual dispersal and ultimately, survival.
Researchers from the Woods Hole Oceanographic Institution (WHOI) and Stony Brook University grew Atlantic slipper limpet larvae, which are slightly larger than a grain of sand, and recorded microscopic video of them swimming. In previous studies, it has been commonly thought that larvae swim faster when they beat their hair-like cilia faster. However, this new microscopic video and research shows that this is not the case. (more…)
Millions of people across the world live or depend on deltas for their livelihoods.
Formed at the lowest part of a river where its water flow slows and spreads into the sea, deltas are sediment-rich, biodiverse areas, a valuable source of seafood, fertile ground for agriculture, and host to ports important for transportation.
At least half of the deltas around the world are so-called “wave dominated deltas” – open to the sea and under the impact of wave erosion. And many more deltas will come under wave dominance as dammed rivers carry less and less sediment. In a warming climate, sea levels are rising and storms are increasing in frequency and severity, posing threats to these deltas and the people and habitats dependent on them. (more…)
Schmidt Ocean Institute (SOI) has begun working with the Deep Submergence Laboratory at the Woods Hole Oceanographic Institution (WHOI) to design and build the world’s most advanced robotic undersea research vehicle for use on SOI’s ship Falkor. The new vehicle will be capable of operating in the deepest known trenches on the planet, including the nearly 11,000-meter-deep Challenger Deep in the Mariana Trench. The design will capitalize on lessons learned from past WHOI vehicle designs, as well as advanced technologies developed for DEEPSEA CHALLENGER, the submersible and science platform that explorer and director James Cameron piloted to Challenger Deep in 2012 and donated to WHOI in 2013.
On Sunday, December 8th, Victor Zykov, SOI’s director of research, will publicly discuss the project for the first time at a University-National Oceanographic Laboratory System’s (UNOLS) Deep Submergence Science Committee meeting in San Francisco. (more…)
For scientists studying marine mammals in the wild, data-logging tags are invaluable tools that allow them to observe animals’ movements and behaviors that are otherwise hidden beneath the waves much of the time. The tags, which temporarily attach to animals using suction, record sounds and gather information about animals’ pitch, speed, and depth. But what effect do the tags have on the animals?
Researchers from Woods Hole Oceanographic Institution (WHOI) and Texas A&M University-Corpus Christi (TAMUCC) are working with dolphins and their trainers at Dolphin Quest at The Kahala Hotel and Resort in Oahu to answer that question, among others. (more…)
