Navigation Links
New study reveals decline of marine phytoplankton over the past century
Date:7/28/2010

A new article published in the 29 July issue of the international journal Nature reveals for the first time that microscopic marine algae known as "phytoplankton" have been declining globally over the 20th century. Phytoplankton forms the basis of the marine food chain and sustains diverse assemblages of species ranging from tiny zooplankton to large marine mammals, seabirds, and fish. Says lead author Daniel Boyce, "Phytoplankton is the fuel on which marine ecosystems run. A decline of phytoplankton affects everything up the food chain, including humans."

Using an unprecedented collection of historical and recent oceanographic data, a team from Canada's Dalhousie University documented phytoplankton declines of about 1% of the global average per year. This trend is particularly well documented in the Northern Hemisphere and after 1950, and would translate into a decline of approximately 40% since 1950. The scientists found that long-term phytoplankton declines were negatively correlated with rising sea surface temperatures and changing oceanographic conditions.

The goal of the three-year analysis was to resolve one of the most pressing issues in oceanography, namely to answer the seemingly simple question of whether the ocean is becoming more (or less) green' with algae. Previous analyses had been limited to more recent satellite data (consistently available since 1997) and have yielded variable results. To extend the record into the past, the authors analysed a unique compilation of historical measurements of ocean transparency going back to the very beginning of quantitative oceanography in the late 1800s, and combined these with additional samples of phytoplankton pigment (chlorophyll') from ocean-going research vessels. The end result was a database of just under half a million observations which enabled the scientists to estimate phytoplankton trends over the entire globe going back to the year 1899.

The scientists report
'/>"/>

Contact: Charles Crosby
charles.crosby@dal.ca
902-494-1269
Dalhousie University
Source:Eurekalert

Page: 1 2

Related biology news :

1. NJIT professor receives Fulbright to study at University of Salerno
2. Study suggests swimmers at sub-tropical beaches show increased risk of illness
3. Scripps research study shows infectious prions can arise spontaneously in normal brain tissue
4. Neiker-Tecnalia study use of oilseedrape and sunflower oils to produce fuel and feed for herds
5. Study recommends that parents, physicians share decisions in sex development disorder surgery
6. UT MD Anderson study ties abnormal cells in blood to lung cancer
7. Kids could get more whole grains from after-school snacks, University of Minnesota study finds
8. NIH awards National Jewish Health $31 million to lead study of infections associated with eczema
9. Study links African ancestry to high-risk breast cancer
10. Climate change causes larger, more plentiful marmots, study shows
11. LSU researchers secure NSF rapid response grants to study impact of oil spill
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/5/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... commerce market, reminds investors and media that  Mr. David ... CARTES SECURE CONNEXIONS AMERICA 2015, held in Washington ... three-day conference is organized into a series of nine session ... Global Fraud: Where is the Trust in Cyberspace? and ...
(Date:4/20/2015)... Huntington Memorial Hospital is the first facility ... miniaturized, wireless monitoring sensor to manage heart failure (HF). ... FDA-approved heart failure monitoring device that has been proven ... to manage heart failure. The CardioMEMS HF ... pulmonary artery (PA) during a non-surgical procedure to directly ...
(Date:4/13/2015)... , April 13, 2015 ... Research, "Global Biometrics Market Forecast & Opportunities, 2020", the ... CAGR of around 14% till 2020. The biometrics ... large scale implementation and review of biometric management ... of new products with greater efficiency, are resulting ...
Breaking Biology News(10 mins):NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 2Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 3Global Biometrics Market to Cross US$ 21 Billion by 2020: TechSci Research 2
... initiating molecular mechanism in sporadic Alzheimer,s disease (AD). ... December 26th issue of the journal Neuron ... amyloid β (Aβ) plaques within the AD brain ... and disease-modifying therapies for AD, especially those aimed ...
... of Scripps Research Institute scientists, along with colleagues from ... from physics to deliver one of those research raritiesan ... that, with remarkable accuracy, predicts how bacterial proteins fold ... capability, described in this week,s Early Edition of the ...
... typically without symptoms until it has spread to other organs, ... chemotherapies show great promise for extending survival during later disease ... In one of the first discoveries of its kind, UC ... cancer gene,s own repair mechanism and, in so doing, help ...
Cached Biology News:Impaired energy metabolism linked with initiation of plaques in Alzheimer's brain 2New technique is quantum leap forward in understanding proteins 2New technique is quantum leap forward in understanding proteins 3New technique is quantum leap forward in understanding proteins 4UC Davis discovery offers hope for treating kidney cancer 2
(Date:5/27/2015)... May 27, 2015 Empowering biomedical ... combat disease, Cubresa Inc. today announced its MR ... Compatible in-bore PET Scanner uses silicon photomultiplier detector ... preclinical MRI machines from manufacturers like Bruker and ... in Winnipeg, Canada. “This enables simultaneous PET and ...
(Date:5/27/2015)... -- Northwest Biotherapeutics, Inc. (NASDAQ: NWBO ) ("NW Bio"), ... cancer, announced today that Dr. Marnix L. Bosch ... making an Industry Expert Theater Presentation at the 2015 ... on Saturday, May 30, 2015, from 3 to 4 ... Place. Dr. Bosch will provide an overview ...
(Date:5/27/2015)... 2015  Ceres, Inc. (Nasdaq: CERE ), an ... for a genetic sequence derived from soybean, covering uses ... development and plant transformation. The company believes that its ... are the target of a class of commercial herbicides. ... license to the innovation, including an opportunity for exclusivity ...
(Date:5/27/2015)... Mass. , May 27, 2015  RXi ... company focused on discovering and developing innovative therapies ... today provided an update on the status of the ... Logo - http://photos.prnewswire.com/prnh/20130917/NE80755LOGO ... were 3,085 and 21 shares of Series A ...
Breaking Biology Technology:Cubresa Launches Simultaneous PET/MRI Technology 2NW Bio To Present Overview Of DCVax-Direct Phase I Trial In Chicago This Weekend 2NW Bio To Present Overview Of DCVax-Direct Phase I Trial In Chicago This Weekend 3Ceres Awarded Patent for Innovation in Soybean 2Ceres Awarded Patent for Innovation in Soybean 3RXi Pharmaceuticals Provides an Update on Series A and Series A-1 Preferred Stock 2RXi Pharmaceuticals Provides an Update on Series A and Series A-1 Preferred Stock 3
... In mid-March the German,Bundestag (Lower House) is due ... Act. The opposing poles in the debate on embryonic ... are calling for the complete,liberalisation of stem cell research, ... on the use of human stem cells, which are ...
... 5 Novo Nordisk, a,healthcare company with an ... today announced plans to expand its U.S. headquarters ... five years, the company,has experienced a 150 percent ... new building will have the capacity for more ...
... 5 Edwards Lifesciences,Corporation (NYSE: EW ), ... valves,today announced the first three human implants of ... John Webb, M.D.,director of the cath lab and ... Columbia., "Edwards is proud to extend our ...
Cached Biology Technology:A New Era in Cell Biology: German Company Develops Groundbreaking Alternative to Stem Cell Therapy 2A New Era in Cell Biology: German Company Develops Groundbreaking Alternative to Stem Cell Therapy 3Novo Nordisk Expands U.S. Headquarters in New Jersey 2Novo Nordisk Expands U.S. Headquarters in New Jersey 3Edwards Lifesciences Announces First Human Implants of Next-Generation Transcatheter Heart Valve 2Edwards Lifesciences Announces First Human Implants of Next-Generation Transcatheter Heart Valve 3
... is a new-generation siRNA transfection reagent that ... 1 nM siRNA in a wide variety ... cell viability. Using low siRNA concentrations avoids ... when transfecting siRNA at higher concentrations, thereby ...
... and Tissue Staining Kits are intended for ... of histological and cytological specimens. These kits ... manufactured by either R&D Systems or by ... the formation of the Avidin-Biotin Complex (ABC) ...
... Cellular uptake of long double stranded RNA ... interference in a diverse group of organisms ... RNA interference leads to the inhibition of ... of the target messenger RNA (mRNA). Attempts ...
... an easy-to-use siRNA transfection reagent that has ... in a variety of cell lines. jetSI-ENDO ... optimized, straightforward protocol. High levels of gene ... transfection of 20 to 100 nM of ...
Biology Products: