Land-use practices on tropical oceanic islands can have large impacts on reef ecosystems, even in the absence of rivers and streams. Land-based pollutants, such as fertilizers and chemicals in wastewater, infiltrate into the groundwaters beneath land and eventually exit into nearshore ecosystems as submarine groundwater discharge (SGD) -- seeping into the coastal zone beneath the ocean's surface. In a study published recently in PLOS ONE, University of Hawai'i at Mānoa (UHM) scientists used a combination of field experiments and chemical analysis of water and algae to show that the quality of coastal groundwater plays a major role in determining the health of nearshore ecosystems in Hawai'i.
Recent centuries have seen a big jump in the rates of erosion in the iconic chalk cliffs on England's south coast. A new study finds that for thousands of years the rocks were being beaten back by the waves at perhaps 2-6cm a year. The past 150 years has seen this retreat accelerate 10-fold, to more than 20cm a year.
Studying hurricane and tropical storm development from three million years ago might give today's forecasters a good blueprint for 21st century storms, says a team of international researchers that includes a Texas A&M University atmospheric sciences professor.
In 2015, Maine fishermen brought in 452,672 pounds of scallop meat valued at $12.70 per pound—the highest in years. But scallops haven't always done well in Maine and beyond. In the 1990s, after huge reductions in multiple fishery landings, including giant sea scallops, NOAA regulators instituted large fishing closures to try to bolster groundfish stocks. After four years, scallop stocks had increased 14 times what they were prior to the closure. Seeking a similar success story, Maine followed suit in 2009 and instituted a three-year scallop fishing closure.
Biological growth along the bottoms of boats is more than just an eyesore. Biofouling, as it is known, slows down ships and impedes the readiness of emergency response and military vessels. A new study identifies key developmental steps these organisms must take to metamorphose from their larval to adult state. Understanding this process could lead to new technologies to prevent the organisms from attaching to ships in the first place.
Coastal waters near heavy human development are more likely to receive land-based "pathogen pollution," which can include viruses, bacteria and parasites, according to a recent study from the University of California, Davis. The study said higher levels of rainfall and development increase the risk of disease-causing organisms flowing to the ocean.
Hitching a ride on fatty molecules, a "sticky" strategy shields sugary molecules from their soluble nature, and may explain the discrepancies between models and actual measurements of sea spray aerosol composition.
World Bleached Corals In Eastern Pacific Separated From Their Healthy Neighbors In The West By Darwin’s ‘Impassable’ Barrier
Across the world, coral reefs are currently struggling to recover from record bleaching events triggered by unusually warm ocean temperatures and a climate change-induced rise in ocean acidity. A lot of these imperilled reefs lie in the eastern Pacific region and are part of a population that, according to a new study, has been completely separated from the rest of the Pacific Ocean for at least the past two decades.
Ocearch said its team of fishermen and scientists has found the first known birthing site for great white sharks on the North Atlantic Coast. After 26 expeditions, Ocearch said the birthing site in the famous waters off Montauk, Long Island is the most significant discovery they’ve ever made, reports CBS News correspondent Jeff Glor. As soon as the shark slides onto the lift, scientists and researchers rush in. By now, the process of tagging is routine for Ocearch. But the particular goal of this trip is not.
As coastal ecosystems feel the heat of climate change worldwide, new research shows the humble mussel and marsh grass form an intimate interaction known as mutualism that benefits both partner species and may be critical to helping these ecosystems bounce back from extreme climatic events such as drought.