Navigation Links
Researchers brave icy waters to study Arctic food web
Date:1/10/2011

st-doctoral researcher Rachel Sipler, graduate student Steven Baer, and field manager Quinn Robertsis how climate-driven changes in runoff from the Arctic tundra will affect competition between phytoplankton and bacteria for nitrate, a nutrient essential to plant growth.

Deborah Bronk and a colleague drill through sea ice on the Chuckchi Sea to take water samples.Today, the Chukchi Sea is a shallow, productive water body that supports large blooms of phytoplankton following ice-out each spring and into the long days of summer. These algal blooms nurture a rich bottom-dwelling community of clams, worms, and other filter feeders. Together, these organisms sustain the fish, walrus, and seals that local subsistence hunters harvest for food.

But climate change threatens to upset this finely balanced ecosystem. As permafrost melts with continued warming, the runoff of "humics" into the coastal Arctic Ocean is increasing. "Humics," says Bronk, are "organic remains from plants that make the water in our neck-of-the-woods tea colored."

Bronk says that addition of humics to the Chukchi Sea will likely shift the focus of productivity from phytoplankton to bacteriabad news for the many animals that rely on phytoplankton for food, and for organisms higher up the food chain, including the native Inupiat. Bacteria are simply too small for filter feeders to capture.

Scientists think that humic-laden waters will favor bacteria, says Bronk, because "humics shut off the light that phytoplankton need for photosynthesis, and provide organic matter, which bacteria use for energy."

A shift from phytoplankton to bacteria could also further enhance climate change in the region. Today, the Arctic's coastal zones are thought to be carbon "sinks," areas where the net result of photosynthesis by phytoplankton is to draw carbon dioxide from the atmosphere into the ocean. With more humics and a shift to bacteria, these regions could become carbon "sour
'/>"/>

Contact: David Malmquist
davem@vims.edu
804-684-7011
Virginia Institute of Marine Science
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Carnegie Mellon researchers identify Facebook neurons
2. Researchers create scoring system for PTEN mutation testing
3. Researchers show how Alzheimers plaques lead to loss of nitric oxide in brain
4. Mayo researchers describe measles viral protein movement
5. Increasing diversity of future life science researchers
6. Biofuel grasslands better for birds than ethanol staple corn, researchers find
7. Researchers investigate why a limited number of white blood cells are attracted to injured tissue
8. MIT researchers study the danger of toxoplasma parasites
9. Researchers discover potential solutions to New England roadside erosion
10. UK researchers contribute to sequencing strawberry genome
11. An important breakthrough by IRCM researchers in hematopoiesis and the development of B cells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers brave icy waters to study Arctic food web
(Date:12/11/2014)... SALEM, N.C. , Dec. 10, 2014  That blood pressure ... quite a while. Hypertension – the medical term for high ... the early 1800s, and the inflatable cuff that,s used in ... doesn,t, however, mean there,s nothing new about hypertension, its triggers ...
(Date:12/10/2014)... here before: you desperately need to sign into your online banking ... to your secret question. What,s your dog,s birthday? Who was your ... a digital infrastructure security company, launches the app that ... usernames, passwords and PINs – 1U TM . 1U ...
(Date:12/10/2014)... , Dec. 9, 2014  Wake Forest Baptist Medical Center today ... School of Medicine. Funding for this $50 million capital project ... publicly launched next summer. The medical education ... Reynolds Tobacco Company complex, adjacent to 525@vine in Wake Forest ...
Breaking Biology News(10 mins):Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
... This press release is available in German . ... the most fascinating species of the Galapagos archipelago, treks ... the Max Planck Institute for Ornithology in Radolfzell, together ... and modern 3D acceleration measurements to find out that ...
... becoming cannier about turning down the thermostat to save our ... when we get to work? A new 1.3m project, ... to look at people,s attitudes to energy consumption in the ... reducing their organisation,s carbon footprint. Drawing on technical expertise ...
... Elsevier, a world-leading provider of scientific, technical and medical ... new, international, open access journal, Case Studies in ... in Engineering Failure Analysis provides a forum for ... in Engineering Failure Analysis and will form an ...
Cached Biology News:Galapagos tortoises are a migrating species 2Galapagos tortoises are a migrating species 3An energy conscious workforce: New research looks at how to encourage staff to go green 2Elsevier launches new open access journal -- 'Case Studies in Engineering Failure Analysis' 2
(Date:1/22/2015)... , a precision medicine software company that has developed a ... genomic, imaging and other biomedical data in research and clinical ... CEO of Aspera, an IBM Company, to its board as ... "We are pleased to welcome Michelle to ...
(Date:12/25/2014)... 2014 The report “Service Quality Management ... & Provider Type - Global Advancements, Worldwide Forecasts & ... in-depth analysis and forecasting of revenues. , Browse ... pages and in-depth TOC on “Service Quality Management (SQM) ...
(Date:12/24/2014)... , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, Inc. (NASDAQ: PTBI, ... announced the closing of an underwritten public offering of 3,500,000 ... an aggregate 3,500,000 shares of common stock, at an offering ... warrants have a per share exercise price of $5.00, are ...
(Date:12/24/2014)... Dec. 24, 2014   BioLife Solutions , Inc. (NASDAQ: ... proprietary clinical grade hypothermic storage and cryopreservation ... for cells and tissues  ("BioLife" or the "Company"), today announced ... on May 4, 2015 (the "Annual Meeting"). Because ...
Breaking Biology Technology:GenoSpace Expands Board with Appointment of Michelle Munson 2Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 2Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 3Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 4PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3BioLife Solutions Sets Date for Annual Meeting of Stockholders 2
... ... first ever evidence of nuclear gene transfer from host to parasite plant species. The discovery, ... plant evolution. , ... UK) May 27, 2010 -- A research team at RIKEN, Japan’s flagship research organization, has ...
... , , ... /PRNewswire-FirstCall/ - Mr. Richard Gilbertson reports: , ... "Developed nations, especially urban areas, once enjoyed a significant communications and ... location, without connectivity to the rest of the world? With reasonably priced connectivity, ...
... BEIJING , May 27 /PRNewswire-Asia-FirstCall/ -- Concord Medical ... ), the,operator of the largest network of radiotherapy and diagnostic imaging ... the first,quarter ended March 31, 2010 (1). , , ... Total net revenues in the first quarter of 2010 were RMB76.2 ...
Cached Biology Technology:Parasite plants rob genes from their hosts 2IGEN engages investor relations firm and announces private placement 2IGEN engages investor relations firm and announces private placement 3Concord Medical Announces First Quarter 2010 Financial Results 2Concord Medical Announces First Quarter 2010 Financial Results 3Concord Medical Announces First Quarter 2010 Financial Results 4Concord Medical Announces First Quarter 2010 Financial Results 5Concord Medical Announces First Quarter 2010 Financial Results 6Concord Medical Announces First Quarter 2010 Financial Results 7Concord Medical Announces First Quarter 2010 Financial Results 8Concord Medical Announces First Quarter 2010 Financial Results 9Concord Medical Announces First Quarter 2010 Financial Results 10Concord Medical Announces First Quarter 2010 Financial Results 11Concord Medical Announces First Quarter 2010 Financial Results 12Concord Medical Announces First Quarter 2010 Financial Results 13Concord Medical Announces First Quarter 2010 Financial Results 14Concord Medical Announces First Quarter 2010 Financial Results 15
... intended for laboratory research use only. ... buffered formalin and embedded in paraffin. ... certified pathologists. Tissue cores were removed ... a new recipient paraffin block, in an ...
... the industry standard microarray image analysis software ... and analysis tools, visualizations, automation capabilities, performance ... included with every GenePix scanner, and it ... and all types of arrays. A wide ...
... applications not requiring confocal, the BD Pathway ... the Pathway 435. And, the Pathway 415 ... applications require it. High-performance, ... to use the laser autofocus, camera autofocus, ...
... in a single and twin head, features T ... the most compact, lightweight package in its performance ... air and gas applications., Available in single ... Delivers 1.5 and 2.0 liters per Watt @ ...
Biology Products: