Extinction of cold-water corals on the Namibian shelf due to low oxygen contents
"They were also able to link this event with a shift in the Benguela upwelling system, and an associated intensification of the oxygen minimum zone in this region. The team has now published their findings in the journal Geology.
Known as 'ecosystem engineers', cold-water corals play an important role in the species diversity of the deep sea. The coral species Lophelia pertusa is significantly involved in reef formation. [...]"
BFAR explains causes of Metro Manila fish kill
Based on the tests conducted by the Bureau of Fisheries and Aquatic Resources-National Fisheries Laboratory Division and BFAR 4A on the water quality in three sampling areas, it showed that there is a poor level of dissolved oxygen and higher levels of ammonia and phosphates than the standard level. The sampling areas were in San Dionisio and Bay City, both in Parañaque. [...]"
Using machine learning to understand climate change
"Methane is a potent greenhouse gas that is being added to the atmosphere through both natural processes and human activities, such as energy production and agriculture.
To predict the impacts of human emissions, researchers need a complete picture of the atmosphere’s methane cycle. They need to know the size of the inputs—both natural and human—as well as the outputs. They also need to know how long methane resides in the atmosphere.
To help develop this understanding, Tom Weber, an assistant professor of earth and environmental sciences at the University of Rochester; undergraduate researcher Nicola Wiseman ’18, now a graduate student at the University of California, Irvine; and their colleague Annette Kock at the GEOMAR Helmholtz Centre for Ocean Research in Germany, used data science to determine how much methane is emitted from the ocean into the atmosphere each year. [...]"
Source: University of Rochester
Deep Atlantic mysteries unveiled in the face of climate change
"ATLAS is one of these projects you can’t do justice to in a single-page article. For over 3.5 years now, a consortium of multinational industries, SMEs, governments and academia have been sailing across the Atlantic to assess its deep-sea ecosystems. In doing so, they’ve already managed to deeply enhance our understanding of the consequences of climate change as well as inform the development of better management policies and practices. [...]"
The IPCC oceans report is a wake-up call for policymakers
"The importance of the ocean in climate regulation is enormous—yet undervalued. The ocean is estimated to have absorbed 93 percent of the excess heat generated by human activities since the 1970s, acting as a buffer against the global warming we've seen to date. The majority of the global carbon cycle circulates through the ocean, through marine food-webs and other processes, and carbon is locked-away in coastal and marine habitats and deep in ocean sediments. Coastal ecosystems alone sequester more carbon than terrestrial forest per unit area. [...]"
To solve climate change, remember the ocean
"More than two-thirds of the planet is covered by ocean, but these waters have not received their due in terms of research dollars or public attention. That means the dangers that the seas face from climate change — and the solutions that they offer — are often overlooked. [...]"
Authors: Janis Searles Jones
Marine fish kill in Jurien Bay Marina is being investigated
Department of Primary Industries and Regional Development officers are investigating the event, to gather information and assess the extent of the fish kill. They have also gathered suitable fish and water samples for laboratory testing. [...]"
Source: Department of Primary Industries and Regional Development (Australia)
Chinese Scientists Develop Online Monitoring Instruments for Ocean Environmental Safety
"Chinese scientists have developed an online system to monitor marine-biochemical elements, according to Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, who led the project. The research team developed the online monitoring instruments by integrating three measurement modules namely, the chlorophyll module, productivity module and dissolved oxygen module, which are all developed by the team itself. [...]"
Source: Chinese Academy of Sciences
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. [...]"
Ferry in Alaska monitors ocean acidification
"The last two years MV Columbia records the ocean’s vitals every three minutes, along a 1,600-kilometer route through the Inside Passage. This includes the coastal region from Puget Sound to the Alaska Panhandle. The ship measures the sea's temperature, salinity, dissolved oxygen content, and carbon dioxide concentration, aiming to monitor ocean acidification. [...]"