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Author: Kari St.Laurent

I received a Ph.D. in oceanography in 2014 from the Graduate School of Oceanography (URI) and am finishing up a post-doc at the University of Maryland Center for Environmental Science (Horn Point Laboratory). I am now the Research Coordinator for the Delaware National Estuarine Research Reserve. Carbon is my favorite element and my past times include cooking new vegetarian foods, running, and dressing up my cat!
Biogeochemistry

Wash your hands after a beach day!

This study demonstrates a direct relationship between the potentially dangerous bacteria Vibrio in beach water with what is on your…
February 10, 2015February 10, 2015 Kari St.Laurent
Human impacts Pollution

Shine on…..or should we?

The consequences artificial light pollution has on marine ecosystems is unclear. This work compiles many of the known and expected…
January 12, 2015January 12, 2015 Kari St.Laurent
Biology Climate Change

O Vibrio, Vibrio, wherefore art thou Vibrio?

Three statistical models used to predict the presence of the dangerous pathogen Vibrio in Chesapeake Bay all give different responses…
December 10, 2014December 1, 2015 Kari St.Laurent
Biology Ecology

Turtle manure and eelgrass seeds make for an aquatic garden!

The accidental ingestion of eelgrass seeds by diamondback terrapins may help disperse eelgrass in Chesapeake Bay, demonstrating a new mutualistic…
November 18, 2014November 18, 2014 Kari St.Laurent
Climate Change Human impacts

Stressing out about water stress

It’s not just climate change that will affect global water stress! Model simulations predict that when both climate change and…
October 17, 2014November 18, 2014 Kari St.Laurent
Biochemistry Ecology

Using nitrogen isotopes to start from the bottom…of the marine food web!

Amino acids, the building blocks of proteins, are an important nitrogen source in the ocean and the δ15N of amino…
September 17, 2014September 17, 2014 Kari St.Laurent
Climate Change Human impacts Pollution

An accidental find: Large quantities of microplastics are in Arctic sea ice!

Multiyear sea ice formation in the Arctic Sea uptakes microplastics from seawater, effectively acting as a sink for these man-made…
August 21, 2014August 24, 2014 Kari St.Laurent
Biogeochemistry

Take your iron! Seasonally melting snow as an iron supply to the Ross Sea, Antarctica

Observations show that the amount of primary productivity in the McMurdo Sound in the Ross Sea of Antarctica cannot be…
July 25, 2014July 28, 2014 Kari St.Laurent
Climate Change Human impacts

Could increasing CO2 be decreasing human nutrition?

The increase in global atmospheric CO2 concentrations may be causing major food crops, like wheat, to have lower amounts of…
June 23, 2014June 24, 2014 Kari St.Laurent
Biogeochemistry Geology

Volcanic ash, fertilizer for the ocean?

Volcanic ash may be an important source of the valuable micronutrients iron and manganese to phytoplankton populations in areas with…
May 26, 2014May 26, 2014 Kari St.Laurent
Biogeochemistry

A sticky situation: Old black carbon and sinking particulate organic carbon

The attachment of aged dissolved black carbon to sinking particles may be an important process for transporting organic carbon to…
April 24, 2014June 17, 2014 Kari St.Laurent
Atmospheric Chemistry Biology Chemistry Remote Sensing

A break-up in the relationship between organic carbon in sea spray and chlorophyll-a concentrations

The transfer of organic matter from the surface sea water to sea spray aerosols appears constant despite the concentration of…
March 26, 2014June 17, 2014 Kari St.Laurent
Climate Change Human impacts Policy

Can’t we all just get along! Bridging the gap between climate scientists and decision-makers to help prevent precipitation-related catastrophes

Climate scientists and humanitarian organizations are implementing a plan to help predict major precipitation-related disasters, such as floods, by focusing…
February 24, 2014February 24, 2014 Kari St.Laurent
Biogeochemistry Climate Change Paleoceanography

We didn’t start the fire!… that changed the southeast Australian landscape 44 thousand years ago

A sediment core suggests that the large ecosystem changes that occurred in southeastern Australia were caused by the extinction of…
January 24, 2014January 24, 2014 Kari St.Laurent
Biogeochemistry Climate Change Paleoceanography

Why lions can thank wildfires for the African Savanna

Sediment records show that wildfires caused the initial expansion of grasslands in Africa during the Miocene (8 million years ago)…
December 20, 2013December 23, 2013 Kari St.Laurent
Biogeochemistry

Carbon on Fire! The role dissolved black carbon plays in the ocean

Fire-derived carbon (or black carbon) composes at least 10% of the marine dissolved organic carbon pool and may act accelerate…
November 22, 2013 Kari St.Laurent
Biology Chemistry Climate Change

How will phytoplankton communities change in a warming world?

A global marine ecosystem model was used to predict how primary productivity and carbon export by phytoplankton will change in…
October 28, 2013October 28, 2013 Kari St.Laurent

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