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Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi

A series of semi-continuous incubation experiments were conducted with the coccolithophore Emiliania huxleyi strain NIWA1108 (Southern Ocean isolate) to examine the effects of five environmental drivers (nitrate concentration, phosphate concentration, irradiance, temperature and pCO2) on both the physiological rates and elemental composition. Show More Summary

Questions as indicators of ocean literacy: students’ online asynchronous discussion with a marine scientist

In this article, 61 high-school students learned about ocean acidification through a virtual laboratory followed by a virtual lecture and an asynchronous discussion with a marine scientist on an online platform: VoiceThread. This study focuses on the students’ development of ocean literacy when prompted to ask questions to the scientist. Show More Summary

Opening of the new Ocean CArbon Data System (OCADS) Project

Message to the Ocean Carbon Community from Alex Kozyr, NOAA Affiliate: Dear Ocean Carbon Scientists, We are pleased to announce that NOAA/NCEI has opened the new Ocean CArbon Data System, (OCADS) Project (former CDIAC Ocean) web page for public use. The OCADS web site address is https://www.nodc.noaa.gov/ocads/ OCADS is responsible for hosting and providing access […]

Effect of low pH on marine mollusca at Rangbai coast, Gujarat

(…) The coastal stretches of Gujarat have several industries, which are based on salt as raw material. The saltpan activity not only provides the livelihood for a large number of unskilled workers but also provides the raw material for several such chemical industries. The present study was conducted to know the low pH is affected by […]

The potential of 230Th for detection of ocean acidification impacts on pelagic carbonate production

Concentrations of dissolved 230Th in the ocean water column increase with depth due to scavenging and downward particle flux. Due to the 230Th scavenging process, any change in the calcium carbonate (CaCO3) fraction of the marine particle flux due to changes in biological CaCO3 hard shell production as a consequence of progressing ocean acidification would be reflected in […]

Calcification process dynamics in coral primary polyps as observed using a calcein incubation method

Calcification processes are largely unknown in scleractinian corals. In this study, live confocal imaging was used to elucidate the spatiotemporal dynamics of the calcification process in aposymbiotic primary polyps of the coral species Acropora digitifera. Show More Summary

The effects of pH and pCO2 on photosynthesis and respiration in the diatom Thalassiosira weissflogii

The response of marine phytoplankton to the ongoing increase in atmospheric pCO2 reflects the consequences of both increased CO2 concentration and decreased pH in surface seawater. In the model diatom Thalassiosira weissflogii, we explored...Show More Summary

noaasanctuaries: Oooh, barracuda! This month, researchers from...

noaasanctuaries: Oooh, barracuda! This month, researchers from Monitor National Marine Sanctuary and the National Centers for Coastal Ocean Science are conducting surveys and biological assessments of shipwrecks off the North Carolina coast. Show More Summary

We have this hunch that your Thursday afternoon needs some...

We have this hunch that your Thursday afternoon needs some penguins. Let us know if we’re right.

Giant larvaceans are deep-sea animals that create giant (and...

Giant larvaceans are deep-sea animals that create giant (and beautiful) mucus nets to trap food particles drifting in the sea. Unfortunately, new research from Monterey Bay Aquarium Research Institute (MBARI) shows that microplastics are riding these mucus nets to the deep sea.

Central Coast scientist finds that California abalone are resilient despite climate change (audio and text)

A Central Coast scientist has found that large sea snails known as abalone are resilient despite the effect of climate change on the ocean. Cal Poly San Luis Obispo biologist Dr. Jennifer O’Leary took a closer look at ocean acidification, which is caused by climate change. This happens when carbon dioxide is absorbed by seawater […]

Effects of diel-cycling hypoxia and acidification on juvenile weakfish Cynoscion regalis growth, survival, and activity

During summertime, dissolved oxygen (DO) and pH/pCO2 cycle daily in shallow estuarine waters used by young fishes as nursery habitat. Laboratory experiments on juvenile weakfish Cynoscion regalis examined individual and interactive impacts of present-day levels of diel-cycling hypoxia and acidification on growth and activity. Show More Summary

Phytoplankton community responses to iron and CO2 enrichment in different biogeochemical regions of the Southern Ocean

The ongoing rise in atmospheric CO2 concentration is causing rapid increases in seawater pCO2levels. However, little is known about the potential impacts of elevated CO2 availability on the phytoplankton assemblages in the Southern Ocean’s oceanic regions. Show More Summary

Can shellfish adapt to ocean acidification?

Scientists peer into oyster and clam genomes to help the shellfish industry prepare for a change in ocean chemistry. In the Pacific Northwest, oyster aficionados have likely tasted Chris Langdon’s scientific handiwork. Since 1996, his...Show More Summary

Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO2

Marine calcifying organisms, such as stony corals, are under threat by rapid ocean acidification (OA) arising from the oceanic uptake of anthropogenic CO2. To better understand how organisms and ecosystems will adapt to or be damaged by the resulting environmental changes, field observations are crucial. Here, we show clear evidence, based on boron isotopic ratio […]

Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance

The Arctic Ocean is a region particularly prone to ongoing ocean acidification (OA) and climate-driven changes. The influence of these changes on Arctic phytoplankton assemblages, however, remains poorly understood. In order to understand...Show More Summary

You otter be proud! The comment period for the review of...

You otter be proud! The comment period for the review of national marine sanctuaries and monuments has officially closed, with almost 100,000 comments submitted. A big fluffy sea otter smooch to everyone who spoke up to support our national underwater treasures!

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