HOME >> BIOLOGY >> NEWS
Envisat fishes up facts behind Chilean giant squid invasion

th oceanography firm Mariscope Chilena, investigating the feasibility of a satellite-based early warning system for harmful phytoplankton blooms explosive growths of sometimes toxic marine algae.

"The AATSR results show the appearance of the squid was connected with changes in the water mass conditions off the coast of Southern Chile in recent weeks," says Dr Cristina Rodrguez-Benito of Mariscope Chilena.

This part of the Chilean coast, like most western continental coasts, is subject to upwellings cold, nutrient-rich waters rise from the oceans depths as prevailing winds blow warmer surface waters away. The phenomenon supports rich fisheries. But the AATSR data reveal that a coastal upwelling that typically influencing the waters between Chilo and the mainland was not seen in the last week of February.

"This caused an influx of warmer water, between 0.5 and 1.5 degrees, and also squid, which are attracted to steep temperature and salinity gradients in the sea where they find their food," adds Rodrguez-Benito. "The squid ended up in a lens of cold water between warmer masses, and this carried them into the inner Gulf of Ancud area.

"The resulting decrease in water temperature can also have a direct effect on aquaculture, because the metabolic systems of fish species are very sensitive to such changes. Envisat's AATSR data registered a decrease of up to 3C.

"Even more important than temperature is the indication of the entrance of a water mass poor in oxygen that could be the reason for the losses already registered in some aquaculture sites.

"We are interested in such events as part of our main project because temperature gradients are often where new phytoplankton blooms occur. But the possibility of being able to predict these phenomena would be very useful also to the fishing industry."

The team plans to present their experiences of using Envisat data in this way to a conference this month of the C
'"/>

Contact: Frdric Le Gall
frederic.le.gall@esa.int
39-06-941-80757
European Space Agency
22-Mar-2004


Page: 1 2 3

Related biology news :

1. Envisat concludes a busy second year in orbit
2. Envisat observes resurgent ozone hole
3. Envisat radar altimetry tracks river levels worldwide
4. Envisat focuses on carbon-rich peat swamp forest fires
5. Envisats ASAR reveals extent of massive oil spill off Spanish coast
6. Earstones tell fishes tale of early life in the Colorado River estuary
7. University of Georgia geneticist among the first to study genetic mating systems of fishes and turtles
8. Invasive fishes pose increasing threat to U.S. waters and native fishes, says USGS
9. New public policy & aging report highlights facts and fiction about anti-aging medicine
10. New method for determining age of artifacts fills chronological gap for scientists
11. East African artifacts support evolution of symbolic thinking in Middle Stone Age

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


(Date:8/26/2020)... ... August 25, 2020 , ... Modality Solutions, a biopharmaceutical ... annual Inc. 5000 list. The list is the most prestigious ranking of the nation’s ... and for this year’s list, reported three-year revenue growth of 71 percent. , ...
(Date:8/21/2020)... ... August 19, 2020 , ... ... and expo uniting life science, data science, informatics and IT leaders goes VIRTUAL ... this period of uncertainty and change, Bio-IT takes the leadership role of keeping ...
(Date:8/7/2020)... ... 06, 2020 , ... Alucio™, a fast-growing provider of cloud-based ... and Jessica Wong have joined the company’s leadership team as Vice President of ... heads development efforts for Alucio’s flagship product, Beacon, an innovative cloud-based content management ...
Breaking Biology News(10 mins):
(Date:7/10/2020)... ... July 09, 2020 , ... ... announced today that Massachusetts Institute of Technology (MIT) has expanded the company’s ... allows PathSensors to move into the point-of-care diagnostic market, focusing initially on ...
(Date:7/10/2020)... ... July 09, 2020 , ... Sentien ... announced the hiring of Allen R. Nissenson, M.D., F.A.C.P., as its Chief Medical ... development of Sentien’s lead product, SBI-101. Dr. Nissenson serves as an Emeritus ...
(Date:7/7/2020)... ... 06, 2020 , ... Bio-IT World has announced the winners ... the University of Chicago, Massachusetts General Hospital, Mission: Cure, and the Pistoia Alliance ... highlighting outstanding examples of how technology innovations and strategic initiatives can be powerful ...
(Date:7/1/2020)... ... June 29, 2020 , ... The Interlocal ... contracts to its membership, recently named BioFit Engineered Products an Awarded ... to purchase ergonomic seating, cafeteria tables, book trucks and carts at discounted pricing ...
Breaking Biology Technology:
Cached News: