Navigation Links
Local factors cause dramatic spikes in coastal ocean acidity
Date:1/2/2014

DURHAM, N.C. A new Duke University-led study has documented dramatic, natural short-term increases in the acidity of a North Carolina estuary.

"The natural short-term variability in acidity we observed over the course of one year exceeds 100-year global predictions for the ocean as a whole and may already be exerting added pressure on some of the estuary's organisms, particularly shelled organisms that are especially susceptible to changes in pH," said Zackary I. Johnson, Arthur P. Kaupe Assistant Professor of Molecular Biology at Duke's Nicholas School of the Environment.

The short-term spikes in the acidity of the estuary were driven by changes in temperature, water flow, biological activity and other natural factors, the researchers said. And they are occurring in addition to the long-term acidification taking place in Earth's oceans as a result of human-caused climate change.

"For vulnerable coastal marine ecosystems, this may be adding insult to injury," said Johnson, who was lead author of the study.

When the effects of long-term ocean acidification and short-term natural variation combine, they can create "extreme events" which may be especially harmful to coastal marine life, he said.

The study was conducted at the Pivers Island Coastal Observatory at the Duke Marine Lab in Beaufort, N.C., as part of a long-term coastal monitoring program. Researchers collected seawater samples from Beaufort Inlet weekly for a year and on a daily and hourly basis for shorter periods to track changes in the water's pH and dissolved inorganic carbon on multiple time scales.

Numerous studies have shown that increasing amounts of atmospheric carbon dioxide from human sources are finding their way into the world's oceans. When the carbon dioxide dissolves in seawater, it reduces the water's pH and the ability of organisms to form calcium carbonate minerals that are the building blocks of many species' shells and
'/>"/>

Contact: Tim Lucas
tdlucas@duke.edu
919-613-8084
Duke University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Managing biodiversity data from local government
2. First paternity study of southern right whales finds local fathers most successful
3. Long-distance distress signal from periphery of injured nerve cells begins with locally made protein
4. In Fiji, marine protection gets local boost
5. Global economic pressures trickle down to local landscape change, altering disease risk
6. Greater effort needed to move local, fresh foods beyond privileged consumers
7. Maple syrup, moose, and the local impacts of climate change
8. Chinese scientists discover evidence of giant pandas population history and local adaptation
9. Local therapy followed by treatment with EGFR TKI is well tolerated
10. Methane emissions from natural gas local distribution focus of new study
11. Local Pearle Vision Licensee Adds Second Center In Canton, Ohio
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/24/2014)... average over a 35 year period in which the ... of humans on declining animal numbers. This decline matters ... spiders, crustaceans, slugs and worms bring to our day-to-day ... for nutrient cycling, water filtration and human health. , ... by UCL, Stanford and UCSB, focused on the demise ...
(Date:7/24/2014)... two factors that characterize sustainable university and college ... qualified physics teachers. Specifically, one or more faculty ... in combination with institutional motivation and commitment can ... Engineering and Math (STEM) teacher shortages are especially ... way for institutions seeking to increase the number ...
(Date:7/24/2014)... 3.5 billion years of evolutionary trial and error, is ... may be reaching a tipping point. , In a ... published in Science , an international team of ... is contributing to what appears to be the early ... , Since 1500, more than 320 terrestrial vertebrates have ...
Breaking Biology News(10 mins):Invertebrate numbers nearly halve as human population doubles 2Invertebrate numbers nearly halve as human population doubles 3Creating sustainable STEM teacher preparation programs 2Stanford biologist warns of early stages of Earth's 6th mass extinction event 2Stanford biologist warns of early stages of Earth's 6th mass extinction event 3
... March 24, 2008) New BARACLUDE (entecavir) data ... resistance in nucleoside-nave patients through five years of ... patients analyzed, no additional patient developed resistance in ... treatment, the cumulative probability of developing mutations in ...
... HIV-positive African adults who become infected with Salmonella die ... diarrhea. Now, UC Davis School of Medicine scientists have ... findings also implicate a mechanism by which HIV evades ... have found the defect in the immune response that ...
... most often produced from biomass burning, cooking with solid ... the atmosphere three to four times greater than prevailing ... in the journal Nature Geoscience. Scripps Institution of ... and University of Iowa chemical engineer Greg Carmichael, said ...
Cached Biology News:BARACLUDE data show low resistance over 5 years in nucleoside-naive hepatitis B patients 2BARACLUDE data show low resistance over 5 years in nucleoside-naive hepatitis B patients 3UC Davis researchers discover how HIV turns food-poisoning into lethal infection 2UC Davis researchers discover how HIV turns food-poisoning into lethal infection 3Black carbon pollution emerges as major player in global warming 2Black carbon pollution emerges as major player in global warming 3
(Date:7/24/2014)... PARK, Calif. , July 24, 2014 /PRNewswire/ ... company in the emerging field of regenerative medicine, ... webcast of a presentation to investors on Tuesday, ... p.m. PDT.  The presentation will include an overview ... To access the webcast, visit http://www.ustream.tv/channel/asterias-biotherapeutics ...
(Date:7/24/2014)... computers have yet to materialise. Yet, scientists are ... such computers faster. One such approach relies on ... by applying an electric field. A new study ... coupled quantum dots (TQDs) with electrical impulses can ... example, should TQDs be used as quantum information ...
(Date:7/24/2014)... 24, 2014 Research and Markets ... and Proteomics Analytical Instruments Market 2014-2018" report to ... Genomics is the study of the gene ... the structure and functions of proteomes or sets of ... technology. Genomics involves the mapping of genes and DNA ...
(Date:7/24/2014)... July 24, 2014 Three companies from ... in Livestrong’s Big C Competition. Out of 700 competition ... headed to the semi-final round. In this round twenty ... accelerator program, complete with mentoring from thought-leaders and medical ... part of the angelMD commitment to the Livestrong vision ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 23 angelMD Startups Make Livestrong Big C Semi-finals 2
... SAN DIEGO, July 24 Orexigen Therapeutics, Inc. ... fully exercised their overallotment option to purchase an additional 1,500,000 ... announced public offering that priced on July 23, 2009. ... at a public offering price of $7.50 per share, resulting ...
... , , , ... NES-ZIONA, Israel, July 24 PROLOR Biotech, Inc. (OTC Bulletin Board: PBTH), formerly ... private investors to sell up to $10 million of the company,s newly issued ... As part of the agreements, the company closed on the issuance of one ...
... , ... it used to be. ,Affordable biometric technology means you can,t get someone to buddy punch for you, ... from anywhere on the web, at anytime! , ... NSW (PRWEB) July 24, 2009 -- Technology is putting an end to the cat and mouse game ...
Cached Biology Technology:Orexigen(R) Therapeutics Announces Full Exercise of Overallotment Option by Underwriters 2PROLOR Biotech Announces $10 Million Preferred Stock Line From Members of The Frost Group 2PROLOR Biotech Announces $10 Million Preferred Stock Line From Members of The Frost Group 3PROLOR Biotech Announces $10 Million Preferred Stock Line From Members of The Frost Group 4Time Clocks Technology Catches Up With Crooks 2Time Clocks Technology Catches Up With Crooks 3
... to grow, the need for greater detection ... necessary, especially when discerning very similar or ... Confocal Microscope System gives you a level ... available in conventional confocal systems, with detectors ...
... kit provides complete components including positive ... detection of DNA fragmentation in cultured ... of BrdU in the procedure provides ... methods. Results can be analyzed by ...
... Whatever your Ion Chromatography requirements, ... . The newly developed conductivity detector ... ultra-low drift . In addition to ... be used with other detectors, such as ...
... combines the space and time dimensions of a ... optical microscope to open new horizons in biological ... for excitation, the decay of a fluorescence emission ... decay measured. Subtle changes in the local ...
Biology Products: