Jul 3, 2014

Ocean upwelling becoming more intense with a changing climate

Ocean winds drive upwelling and productivity along certain coastlines. (photo: Ron LaValley)

Our Washington coastline is one of the most prolific and productive in the world, teeming with abundant plant and animal life. In fact, much of entire U.S. west coast is the same, and we can largely thank a strong upwelling system for driving this bounty. New research published in Science has shown that upwelling in the eastern boundary current systems – meaning, the eastern edges of ocean basins across the globe where winds, currents, and geological formations create a prime environment for upwelling – has increased globally over the past 60 years.

Demystifying lush landscapes of the ancient African Sahara

Giraffe rock carvings in the Sahara Desert (photo: Matthew Paulson)

When thinking of rich green landscapes—ones where an abundance of rain keeps everything growing and vibrant, supporting water-loving wildlife like crocodiles and hippopotamus—the Sahara is hardly the place that comes to mind. Yet 6000 years ago, this would have appropriately described what has become the dry, thirsty landscape of the Sahara we know today. The desert’s previous state of relative lushness has long been known by scientists and others.

Using eDNA to help scientists monitor marine ecosystems

Through eDNA, a sample of seawater can yield information about who is living in nearby waters. (graphic: Kelly Lance)

Marine plants and animals leave behind tiny markers of their presence, often in the form of skin cells that have been shed, damaged tissues, or waste products – and within that lies their signature DNA. From a sample of seawater, scientists can read that eDNA — that is, environmental DNA — and paint a picture of species diversity in specific ocean ecosystems, determine whether or not invasive species have landed in local waters, and even sharpen their ability to monitor ecosystem changes as is often required by law.

Read more at the Stanford Woods Institute »

Jun 25, 2014

Shellfish center – named after UW’s Ken Chew – to tackle shellfish declines

Washington state’s newest shellfish hatchery – and the federal government’s only such hatchery in the region – has been named after long-time University of Washington faculty member Ken Chew, a professor emeritus of aquatic and fishery sciences. The Kenneth K. Chew Center for Shellfish Research and Restoration is housed at the Manchester Research Station operated by the National Oceanic and Atmospheric Administration near Port Orchard.

Scientists ready to study magma formation beneath Mount St. Helens

Mt St Helens two years after eruption (photo: USGS)

University and government scientists are embarking on a collaborative research expedition to improve volcanic eruption forecasting by learning more about how a deep-underground feeder system creates and supplies magma to Mount St. Helens. They hope the research will produce science that will lead to better understanding of eruptions, which in turn could lead to greater public safety.