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  Image: Geographic Location Direction Photo #: ISS051-E-12705 Date: Apr. 2017
Geographic Region: SPAIN
Feature: FISH-FARM PONDS, GUADALQUIVIR R.

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  View Low-Resolution Image  
  Fish Ponds and Rice Fields, Lower Guadalquivir River

An astronaut took this photograph of a section of Isla Mayor, an island in the delta of the Guadalquivir River in southwestern Spain. The Donana National Park is a marshland nature reserve that has been proclaimed a UNESCO World Heritage site. The larger, multi-colored geometric shapes in the scene are fish ponds, while the smaller, dark rectangles are rice fields.

The fish farming practiced here tries to mimic natural conditions - maintaining the original wetland conditions - more closely than many "intensive" fish farms around the world. These larger ponds are fed with river water, which contains natural food types, especially algae and shrimp, without commercial fish feed or antibiotics. Such larger fish ponds reduce problems, such as fish diseases and degradation of the pond water, and raise marketability. Species farmed here include sea bass, grey mullet, meagre, and shrimp.

Cattle raising and rice farming are being progressively phased out of the area as part of a wider plan to surround the Donana park with environments that resemble the original wetlands. The region is becoming one of the largest bird refuges in Europe, attracting almost 250 species of migratory birds each year. Fish taken from the ponds by birds - amounting to about 20 percent of the fish population - are viewed as part of an ecosystem in balance.


 
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Images: All Available Images Low-Resolution 513k
Mission: ISS051  
Roll - Frame: E - 12705
Geographical Name: SPAIN  
Features: FISH-FARM PONDS, GUADALQUIVIR R.  
Center Lat x Lon: 37.0N x 6.2W
Film Exposure:   N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP: 10
 
Camera: N6
 
Camera Tilt: 27   LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length: 1150  
 
Nadir to Photo Center Direction: S   The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?:   Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number:  
 
Date: 20170412   YYYYMMDD
Time: 135558   GMT HHMMSS
Nadir Lat: 38.7N  
Latitude of suborbital point of spacecraft
Nadir Lon: 5.6W  
Longitude of suborbital point of spacecraft
Sun Azimuth: 221   Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude: 213   nautical miles
Sun Elevation: 54   Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views:  
Water Views:  
Atmosphere Views:  
Man Made Views:  
City Views:  
Photo is not associated with any sequences


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