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|Atlantic Ocean may get a jump-start from the other side of the world|
A key question for climate scientists in recent years has been whether the Atlantic Ocean's main circulation system is slowing down, a development that could have dramatic consequences for Europe and other parts of the Atlantic rim. But a new study suggests help may be on the way from an unexpected source -- the Indian Ocean.
Publ.Date : Mon, 16 Sep 2019 11:40:32 EDT
Hope for coral recovery may depend on good parenting
Scientists discover coral pass beneficial algal symbionts to offspring to help them cope with rising ocean temperatures. The process occurs during reproduction sans nuclear DNA. It's the first time this has been observed.
Publ.Date : Mon, 16 Sep 2019 08:15:00 EDT
Low sea-ice cover in the Arctic
The sea-ice extent in the Arctic is nearing its annual minimum at the end of the melt season in September. Only circa 3.9 million square kilometers of the Arctic Ocean are covered by sea ice any more, according to researchers.
Publ.Date : Fri, 13 Sep 2019 10:14:28 EDT
Four billion particles of microplastics discovered in major body of water
While collecting water samples and plankton, researchers discovered a high concentration of microplastics, which are known to disrupt the marine food chain.
Publ.Date : Thu, 12 Sep 2019 11:18:19 EDT
Microorganisms reduce methane release from the ocean
Bacteria in the Pacific Ocean remove large amounts of the greenhouse gas methane.
Publ.Date : Tue, 10 Sep 2019 13:43:09 EDT
Do animals control earth's oxygen level?
For the first time, researchers have measured how the production of algae and the Earth's oxygen level affect each other -- what you might call 'Earth's heartbeat'. Studies of 540 million-year-old limestone indicate that it is not just the oxygen level that affects animals, but that animals can indeed regulate the oxygen level.
Publ.Date : Tue, 10 Sep 2019 10:54:01 EDT
Tracking sulfur-based metabolism in the open ocean
Oceanographers found that marine microbes process sulfonate, a plentiful marine nutrient, in a way that is similar to soils.
Publ.Date : Fri, 06 Sep 2019 09:06:08 EDT
Kilauea lava fuels phytoplankton bloom off Hawai'i Island
When Kilauea Volcano erupted in 2018, it injected millions of cubic feet of molten lava into the nutrient-poor waters off the Big Island of Hawai'i. The lava-impacted seawater contained high concentrations of nutrients that stimulated phytoplankton growth, resulting in an extensive plume of microbes that was detectable by satellite.
Publ.Date : Thu, 05 Sep 2019 14:54:13 EDT
Climate change could bring short-term gain, long-term pain for loggerhead turtles
New research suggests that while some loggerheads will suffer from the effects of a changing climate, populations in certain nesting areas could stand to reap important short-term benefits from the shifting environmental conditions.
Publ.Date : Thu, 05 Sep 2019 11:16:58 EDT
New patterns of key ocean nutrient
The important nutrient phosphate may be less abundant in the global ocean than previously thought, according to a new article. The researchers compiled data collected using highly sensitive techniques that measure phosphate to create a more accurate dataset to power global ocean models.
Publ.Date : Thu, 05 Sep 2019 10:30:17 EDT
Underwater soundscapes reveal differences in marine environments
Storms, boat traffic, animal noises and more contribute to the underwater sound environment in the ocean, even in areas considered protected.
Publ.Date : Wed, 04 Sep 2019 15:39:58 EDT
Vintage film shows Thwaites Glacier ice shelf melting faster than previously observed
Newly available archival film has revealed the eastern ice shelf of Thwaites Glacier in Antarctica is melting faster than previous estimates, suggesting the shelf may collapse sooner than expected.
Publ.Date : Mon, 02 Sep 2019 18:15:45 EDT
Oxygen depletion in ancient oceans caused major mass extinction
For years, scientists struggled to connect a mechanism to this mass extinction, one of the 10 most dramatic ever recorded in Earth's history. Now, researchers have confirmed that this event, referred to by scientists as the Lau/Kozlowskii extinction, was triggered by an all-too-familiar culprit: rapid and widespread depletion of oxygen in the global oceans.
Publ.Date : Fri, 30 Aug 2019 15:08:01 EDT
Evidence for past high-level sea rise
Scientists, studying evidence preserved in speleothems in a coastal cave, illustrate that more than three million years ago -- a time in which the Earth was two to three degrees Celsius warmer than the pre-industrial era -- sea level was as much as 16 meters higher than the present day.
Publ.Date : Fri, 30 Aug 2019 15:07:51 EDT
Early start of 20th century Arctic sea ice decline
Arctic sea-ice has decreased rapidly during the last decades in concert with substantial global surface warming. Both have happened much faster than predicted by climate models, and observed Arctic warming is much stronger than the global average. Projections suggest that Arctic summer sea-ice may virtually disappear within the course of the next fifty or even thirty years.
Publ.Date : Fri, 30 Aug 2019 15:07:49 EDT
Uncovering ocean iron-level mystery
A new study uncovered the reason behind chemistry variations in the North Pacific Subtropical Gyre ecosystem.
Publ.Date : Thu, 29 Aug 2019 18:42:05 EDT
New UN high-seas treaty must close gaps in biodiversity governance
Thousands of marine species could be at risk if a new United Nations high-seas biodiversity treaty, now being negotiated in New York, does not include measures to address the management of all fish species in waters beyond national jurisdiction, not just commercial species, warn experts.
Publ.Date : Thu, 29 Aug 2019 15:06:40 EDT
Bacteria feeding on Arctic algae blooms can seed clouds
New research finds Arctic Ocean currents and storms are moving bacteria from ocean algae blooms into the atmosphere where the particles help clouds form. These particles, which are biological in origin, can affect weather patterns throughout the world, according to the new study.
Publ.Date : Thu, 29 Aug 2019 11:54:28 EDT
Bad Blooms: Researchers review environmental conditions leading to harmful algae blooms
When there is a combination of population increase, wastewater discharge, agricultural fertilization, and climate change, the cocktail is detrimental to humans and animals. This harmful cocktail produces harmful algal blooms, and many of these are toxic to humans and wildlife.
Publ.Date : Tue, 27 Aug 2019 09:50:54 EDT
Crack in Pacific seafloor caused volcanic chain to go dormant
Geologists have discovered that 50 million years ago a chain of volcanoes between Northeast Asia and Russia were forced into a period of dormancy that lasted for 10 million years.
Publ.Date : Mon, 26 Aug 2019 12:19:56 EDT