Tuesday, December 30, 2014
Wednesday, December 10, 2014
Excelente iniciativa, y fuerza de opinión, para promover el buen manejo y explotación de recursos marinos en Perú
Sin embargo, agrego lo siguiente (desde otra perspectiva):
Thursday, November 27, 2014
Amazing gathering of seabirds at Central Peru (Callao)
By these days, this image is repeated along Peruvian coastal border. Here you can see this interesting video.
Birds are everywhere
This appear be a recurrent state in this small ecosystem called 'La Arenilla'.
Although these macroalgae (Ulva spp.) extensions (< 2 km) do not reach the large dimensions of other cases (Liu et al., 2013. Click here to read the paper), they occupy a relatively large area of this site, providing protection for larval and juvenile fish species.
Thursday, November 6, 2014
Friday, October 24, 2014
Monday, September 22, 2014
The ICES Symposium on “Marine Ecosystem Acoustics (Some Acoustics)– observing the ocean interior in support of integrated management” will be held in Nantes, France from Monday 25 to Thursday 28 of May 2015, with Tom Weber (USA), Nils Olav Handegard (Norway) and Verena Trenkel (France) as conveners...more information here
Theme 1: Marine Biodiversity & Global change
Theme 2: Marine Ecosystem Structure & Function
Theme 3: Marine Ecosystem Safety
Theme 4: Marine Biological Observation
Theme 5: Marine Biological Resources
Theme 6: Deep sea Biodiversity
Tuesday, September 9, 2014
Thursday, August 28, 2014
Wednesday, August 6, 2014
Tuesday, July 15, 2014
Tuesday, July 8, 2014
Monday, May 19, 2014
Data from ocean-observing satellites and other ocean sensors indicate that El Niño conditions appear to be developing in the equatorial Pacific Ocean. Conditions in May 2014 bear some similarities to those of May 1997, a year that brought one of the most potent El Niño events of the 20th century.
During an El Niño, easterly trade winds in the Pacific falter and allow giant waves of warm water—known asKelvin waves—to drift across from the western Pacific toward South America. Surface waters in the central and eastern Pacific become significantly warmer than normal, altering weather patterns and affecting fisheries along the west coasts of the Americas. El Niño also can have a significant influence on weather and climate far from the tropics.
The maps above show the ten-day average of sea surface height centered on May 2, 1997 (left), and May 3, 2014. Shades of red and orange indicate where the water is warmer and above normal sea level. Shades of blue-green show where sea level and temperatures are lower than average. Normal sea-level conditions appear in white. The 1997 map was assembled from data collected by the TOPEX/Poseidon satellite, while the 2014 data comes from the Ocean Surface Topography Mission/Jason 2 satellite.
The height of the sea surface is a good indicator of the amount of heat stored in the water. As the ocean warms, the surface rises; as it cools, its falls. This is due to thermal expansion and contraction; the molecules in warmer water are farther apart than in cooler water. Above-normal sea surface heights in the equatorial Pacific indicate El Niño conditions, while below-normal heights indicate La Niña. (You can see an example of La Niña here and El Niño here.)
“What we are now seeing in the tropical Pacific Ocean looks similar to conditions in early 1997,” said Eric Lindstrom, oceanography program manager at NASA headquarters. “If this continues, we could be looking at a major El Niño this fall. But there are no guarantees.” Observations from a network of sensors within the Pacific Ocean support the satellite view, showing a deep pool of warm water that has been sliding eastward since January.
More information: http://earthobservatory.nasa.gov/