Category: Ocean Chemistry and Ecosystems

Scientists lift a CTD rosette on board to collect ocean carbon samples. image credit: Nicolas Gruber, ETH, Switzerland

Global Ocean is Absorbing More Carbon from Fossil Fuel Emissions

The new research published by NOAA and international partners in Science finds as carbon dioxide emissions have increased in the atmosphere, the ocean has absorbed a greater volume of emissions. Though the volume of carbon dioxide going into the ocean is increasing, the percentage of emissions — about 31 percent — absorbed by it has remained relatively stable when compared to the first survey of carbon in the global ocean published in 2004.

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Photo of research being done on Red Tide from the R/V Walton Smith. Photo Credit: NOAA AOML.

New Cruise Studies Red Tide Impacts in South Florida

AOML recently led a multi-agency (NOAA/AOML, NOAA/SEFSC, State of Florida Fish and Wildlife Research Institute, Florida Fish and Wildlife Commission, NOAA/NESDIS, University of South Florida, MOTE Marine Laboratory and Aquarium, and University of Miami) research cruise to study the effects of Southwest Florida’s ongoing red tide. To address such a complex problem as red tide, the cruise brought together a diverse team of experts consisting of commercial fishermen, oceanographers, systems ecologist, phytoplankton ecologist, and fish population biologist. This cruise allowed researchers to take a holistic approach to characterize the extent of the red tide and its impacts. The goal of the cruise was to understand why these blooms happen to better inform effective future response measures and hopefully improve Florida’s resilience to these coastal events. 

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Beach at Sunrise

BEACHES Study Promotes Health & Safety for Beachgoers

Few accessible places represent Earth’s natural beauty quite like our beaches, but looks can be deceiving if there is a bacterial outbreak or contamination from offshore activities. Not being able to see these contaminants puts families at risk of exposure if they aren’t properly warned. The BEACHES project (Beach Exposure And Child Health Study), a collaboration between the University of Miami’s College of Engineering and the Cooperative Institute for Marine and Atmospheric Studies and AOML, along with the Universities of Arkansas and Texas, aims to pair child behavioral science with microbiology to address exposure risk of beachgoers.

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eAUV post-deployment. Photo Credit: NOAA.

NOAA Collaborates with Partners to Test Unmanned Underwater Vehicles which Record Harmful Algal Blooms in Lake Erie

In a collaborative effort between NOAA, the Cooperative Institute for Great Lakes Research, and the Monterey Bay Aquarium Research Institute, research merging robotics with biochemistry will give us a detailed, three-dimensional picture of harmful algal blooms in Lake Erie in near real-time and take water samples for genomic analysis. The end goal is a Harmful Algal Bloom forecast to help managers make decisions about environmental health and public safety pertaining to the lake. AOML’s own Dr. Kelly Goodwin is participating in the project to help with instrument and sample recovery.

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Sunset image from the Walton Smith in Miami, Florida. Photo Credit: NOAA.

Cruising for Conservation: Restoring Florida’s Water Quality

 In August 2018, a team of biological oceanographers and ecologists set sail on the R/V Walton Smith to sample the waters of Biscayne Bay & Florida Bay. AOML has conducted regular interdisciplinary observations of south Florida coastal waters since the early 1990’s. We spoke with Chris Keble, the lead scientist for AOML’s South Florida Ecosystem Restoration Research project, to learn more.

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Florida Coral Disease April 2018

Coral Reefs will be Unable to Keep Pace with Sea-Level Rise

NOAA contributed to a study published today in the journal Nature that compares the upward growth rates of coral reefs with predicted rates of sea-level rise and found many reefs would be submerged in water so deep it will hamper their growth and survival. The study was done by an international team of scientists led by the University of Exeter in the United Kingdom. 

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Cheeca Moasaic Comparison

Coral Bleaching Study Offers Clues about the Future of the Florida Keys Reef Ecosystem

A recent study by AOML and partners identified coral communities at Cheeca Rocks in the Florida Keys National Marine Sanctuary that appear to be more resilient than other nearby reefs to coral bleaching after back to back record breaking hot summers in 2014 and 2015 and increasingly warmer waters. This local case study provides a small, tempered degree of optimism that some Caribbean coral communities may be able to acclimate to warming waters.

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R/V Ronald H. Brown

Indian Ocean Hydrographic Cruise Allows Scientists to Sample for the First Time Since 1995

Existing observations show that Indian Ocean surface water temperatures have been increasing since the 1970’s. But has the deep ocean warmed? Have the regional concentrations of dissolved oxygen, carbon dioxide, or nutrients changed? Has the western Indian Ocean become more acidic? These and more questions will be addressed by scientists after the completion of this cruise.

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Plankton samples collected in a successful plankton tow. Image credit: NOAA

New Year, Continued Restoration and Monitoring

AOML scientists recently returned from the first cruise of 2018. As part of the South Florida Project, regional surveys over the southwest Florida shelf and the Florida Keys reef tract are routinely performed aboard the R/V F.G. Walton Smith on a bimonthly basis, to keep a watchful eye over sensitive marine habitats found in the region. Sampling methodologies include discrete sampling and flow through measurements of water quality and chemistry, and biological oceanographic parameters.

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Loggerhead Sea Turtle Lost Years

Satellite Tracking Provides Clues About South Atlantic Loggerhead ‘Lost Years’

The behavior and movement of sea turtles during their first few years at sea, known as the ‘lost years’, remains largely a mystery. Researchers from NOAA-AOML, NOAA Fisheries, University of Central Florida, and Projecto TAMAR recently collaborated on a study to explore the mechanisms of dispersal in Brazilian loggerhead turtles, to fill in some of these important early life history gaps. A previous study conducted in the Gulf of Mexico debunked the historic belief that young sea turtles rely solely on riding currents as a passive mechanism of dispersal. This latest study uncovers new drivers behind the travels of young sea turtles, suggesting there may be more of an ecological implication behind their behavior than previously realized.

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