Navigation Links
Scientists solve a 14,000-year-old ocean mystery
Date:7/14/2013

g in the North Pacific ocean, which stirred nutrients that the tiny plankton depend on up into the sea's surface layers, but in doing so also mixed the plankton into deep, dark waters, where light for photosynthesis was too scarce for them to thrive. Then a pulse of freshwater from melting glaciersevidenced by a change in the amount of a certain oxygen isotope in the foraminifera shells found in the corestopped the mixing, trapping the phytoplankton and other small creatures in a thin, bright, nutrient-rich top layer of ocean. With greater exposure to light and nutrients, and iron levels that were still relatively high, the creatures flourished.

"We think that ultimately this is what caused the productivity peakthat all these things happened all at once," Lam says. "And it was a transient thing, because the iron continued to drop and eventually the nutrients ran out."

The study's findings disprove that iron caused this ancient bloom, but they also raise questions about a very modern idea. Some scientists have proposed seeding the world's oceans with iron to trigger phytoplankton blooms that could trap some of the atmosphere's carbon dioxide and help stall climate change. This idea, sometimes referred to as the "Iron Hypothesis," has met with considerable controversy, but scientific evidence of its potential effectiveness to sequester carbon and its impact on ocean life has been mixed.

"This study shows how there are multiple controls on ocean phytoplankton blooms, not just iron," says Ken Buesseler, a WHOI marine chemist who led a workshop in 2007 to discuss modern iron fertilization. "Certainly before we think about adding iron to the ocean to sequester carbon as a geoengineering tool, we should encourage studies like this of natural systems where the conditions of adding iron, or not, on longer and larger time scales have already been done for us and we can study the consequences."


'/>"/>

Contact: Media Relations Office
media@whoi.edu
508-289-3340
Woods Hole Oceanographic Institution
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Scientists decipher cellular roadmap of disease-related proteins
2. Scientists discover ethnic differences in immune response to TB bacterium
3. Scientists identify promising antiviral compounds
4. Harvard and USC scientists show how DHA resolves inflammation
5. Tiny nanocubes help scientists tell left from right
6. Scientists discover thriving colonies of microbes in ocean plastisphere
7. Scientists discover new details about rice blast, a deadly plant fungus
8. Research reveals low exposure of excellent work by female scientists
9. Scientists use DNA from a museum specimen to study rarely observed type of killer whale
10. Hundreds of insect scientists migrating to Rapid City this week
11. Scientists identify potential drug target for treatment-resistant anemias
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/16/2014)... new synthesis of recent research findings to inform their ... two states. , The Ecology and Management of ... Synthesis of the Relevant Biophysical Science and Implications for ... the U.S. Forest Service,s Pacific Northwest Research Station, is ... a synthesis of the large body of scientific information ...
(Date:10/16/2014)... be cultivated efficiently, they are anything but sustainable: ... monoculture cultivation is becoming increasingly evident. Despite their ... and are regarded as the sole possibility of ... wrongfully, finds Bernhard Schmid, an ecology professor at ... form of agriculture and forestry. After all, a ...
(Date:10/16/2014)... Northridge, Calif. (October 16, 2014) – Post-menopausal women ... effect on hormone levels or genital bleeding, after ... of an investigational fermented soy germ-based nutritional supplement ... according to a new peer-reviewed pilot study reported ... Society (NAMS) annual scientific meeting. , "These ...
Breaking Biology News(10 mins):New report synthesizes best available science on management of moist mixed-conifer forests 2Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3S-equol supplements associated with improved measures of reproductive health in postmenopausal women 2
... likely to die of - heart disease compared with women ... blame, according to a new University of Leicester led study ... New Blood Lecturer in Cardiovascular Medicine in the Department of ... "male disadvantage" may be related to the sex-specific effects of ...
... an agreement was reached by the Alliance for a ... sales restrictions on "competitive foods" such as soft drinks ... say limiting the availability of soft drinks at school ... elementary school children. In a study of more ...
... at Georgia Tech have used skin cells to create ... to blend into other tissues such as tendons or ... bone to softer tissue rather than the sudden shift ... the body and allowing them to handle weight more ...
Cached Biology News:Sex hormones link to heart risk 2Engineers create bone that blends into tendons 2
(Date:10/20/2014)... Virginia (PRWEB) October 20, 2014 ... NDA Partners LLC, announced today that Ellen Teplitzky, ... legal support for the pharmaceutical industry, has joined ... manager of its legal services practice. NDA ... and expert witness and testimony, to top law ...
(Date:10/19/2014)... 2014 The Latin American hardware encryption ... Latin America with analysis and forecast of revenue. This ... is expected to reach $2,366.8 million by 2018, at ... Browse through the TOC of the Latin American hardware ... in-depth analysis provided. It also provides a glimpse of ...
(Date:10/19/2014)... , Oct. 19, 2014 NextCODE Health, which enables ... genome in real time, today announced the launch of its ... Exchange , at the American Society of Human Genetics (ASHG) ... learn more, sign up and apply for free beta access, ... features and benefits can be viewed here . ...
(Date:10/19/2014)... The Asian Automatic patient billing report defines and ... of revenue. The Automatic patient billing market in Asia ... 2018, at a developing CAGR of 7.2% from 2013 ... Asian Automatic patient billing market, to get an idea ... glimpse of the segmentation of this market in the ...
Breaking Biology Technology:NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 3The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3
... NanoBio Corporation announced,today that it will present ... its clinical and preclinical development programs in,onychomycosis, acne, ... of Pharmaceutical Scientists (AAPS) meeting November 16-20,2008 in ... during the conference:, Tuesday, November 18, 1:00 ...
... (Nasdaq: GENR ) will present at BIO-Europe ... in Mannheim, Germany. Dr. Henry,Wolfe, Executive Vice President ... on Tuesday, November 18, 2008 at 11:00 a.m. ... developing trodusquemine (MSI-1436) for type 2,diabetes and obesity ...
... Organization Will Focus on Policy and Public Affairs in New ... ... Mass., Nov. 13 A non-profit, member-driven,organization comprised of state biotech ... support,and grow the biotechnology industry in New England today announced its,formation ...
Cached Biology Technology:NanoBio to Give Four Scientific Presentations at Upcoming National Meeting of Pharmaceutical Scientists 2Genaera to Present at BIO-Europe 2008 2New Regional Biotech Association Formed 2
... The Model 1575 immunowash microplate washer 100-240 ... that have flat-, U-, or V-bottom wells. ... horizontal and vertical needle positions to an ... crosswise aspiration, and overflow washing. It can ...
... Incubator is a compact benchtop and ... microprocessor controller with a large display ... agitation speed. Air circulation inside to ... Temperature can be easily calibrated from ...
... RM is specifically designed as a high ... new variable mass compensation allows high shaking ... better aeration and, therefore, faster growth and ... is ideal when high reproducibility is critical ...
...
Biology Products: