HOME >> BIOLOGY >> NEWS
Global warming will reduce ocean productivity, marine life

CORVALLIS, Ore. -- A 10-year, satellite-based analysis has shown for the first time that primary biological productivity in the oceans - the growth of phytoplankton that forms the basis for the rest of the marine food chain - is tightly linked to climate change, and would be reduced by global warming.

The study, published this week in the journal Nature by researchers from Oregon State University and five other institutions, found that on a global scale, a warmer climate could cause a rapid, overall reduction in marine life.

This clearly showed that overall ocean productivity decreases when the climate warms, said lead author Michael Behrenfeld, an OSU professor of botany and expert on remote sensing of marine biology.

There is significant regional variability, with some areas showing enhanced production and some area losses, Behrenfeld said. But on a global basis there is an inverse relationship increased temperatures cause decreased marine phytoplankton production.

This climate response can be traced to increased stratification in the oceans, the study showed. When the ocean surface warms, it essentially becomes lighter than the cold, dense water below, which is loaded with nutrients. This process effectively separates phytoplankton in the surface layer - which need light for photosynthesis - from the nutrients below them, which they also need for growth.

The satellite data used in the study were from NASAs SeaWiFS satellite, or Sea-viewing Wide-Field-of-view Sensor. Since its launch in 1997, SeaWiFS has measured changes in the color of the ocean - as more and more phytoplankton are added, the color shifts from blue toward green. By studying these color changes from space, scientists can calculate how much phytoplankton pigment is in the water, relate this to photosynthetic rate, and correlate these changes to simultaneous changes in climate.

The first climate-driven change in ocean
'"/>

Contact: Michael Behrenfeld
behrenfm@science.oregonstate.edu
541-737-5289
Oregon State University
6-Dec-2006


Page: 1 2 3

Related biology news :

1. Global community listens to TAU genetic researcher at EU Conference on Hearing Loss
2. Global warming is evaporating Arctic ponds, new study shows
3. Global heartbeat control suggests therapy for beating heart failure
4. Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems
5. Global ocean sampling expedition
6. Global Nephrology gathers in Rio
7. Global study concludes attack rate of flu in kids is 55 percent lower with nasal spray vaccine
8. Global warming of the future is projected by ancient carbon emissions
9. Global warming is reducing ocean life, increasing atmospheric carbon dioxide, say scientists
10. Global malaria map key weapon in fight against malaria, scientists say
11. Top scientists meet for Global Conference on Stem Cell Therapy for Cardiovascular Diseases

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:9/3/2020)... ... September 03, 2020 , ... Litmus Health , the ... assessment of the company’s security practices has been completed. The assessment deemed Litmus ... comprehensive evaluation reviewed Litmus’ processes and systems, assessing them to see whether they ...
(Date:8/26/2020)... ... ... Modality Solutions, a biopharmaceutical cold chain validation engineering firm, is pleased ... the most prestigious ranking of the nation’s fastest-growing private companies. Modality Solutions made the ... revenue growth of 71 percent. , The Inc. 5000 list represents a unique ...
(Date:8/21/2020)... , ... August 19, 2020 , ... ... premier conference and expo uniting life science, data science, informatics and IT leaders ... , “In this period of uncertainty and change, Bio-IT takes the leadership role ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... ... 2020 , ... eSource has long been touted as the solution to high ... eSource, the reasons it did not take off as quickly as people initially expected, ... is moving towards capturing data electronically for clinical trials and then repurposing it for ...
(Date:7/18/2020)... ... July 16, 2020 , ... “We are thrilled to ... Bioactives. “It’s the only technology of its kind on the market and we were ... with the protective capacity of traditional cultured ingredients, creating a natural way to extend ...
(Date:7/10/2020)... ... July 09, 2020 , ... ... (PTU) is commonly used to suppress pigment formation in zebrafish embryos, maintaining optical ... team led by Dr MA has been using the zebrafish model to investigate ...
(Date:7/1/2020)... Ohio (PRWEB) , ... June 29, 2020 , ... ... offers access to competitively procured purchasing contracts to its membership, recently named ... provide TIPS members with the opportunity to purchase ergonomic seating, cafeteria tables, book ...
Breaking Biology Technology:
Cached News: