File:Fish Ponds and Rice Fields, Lower Guadalquivir River.jpg
Original file (4,928 × 3,280 pixels, file size: 9.27 MB, MIME type: image/jpeg)
Captions
Summary
editDescriptionFish Ponds and Rice Fields, Lower Guadalquivir River.jpg |
English: An astronaut took this photograph of a section of Isla Mayor, an island in the delta of the Guadalquivir River in southwestern Spain. The Doñana 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 Doñana 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. |
Date | |
Source | NASA |
Author | NASA |
Licensing
editPublic domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
Warnings:
|
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 11:44, 21 June 2017 | 4,928 × 3,280 (9.27 MB) | Originalwana (talk | contribs) | trying again | |
11:38, 21 June 2017 | 4,928 × 3,280 (9.27 MB) | Originalwana (talk | contribs) | rotated | ||
11:04, 21 June 2017 | 4,928 × 3,280 (9.83 MB) | Originalwana (talk | contribs) | {{Information |Description ={{en|1=An astronaut took this photograph of a section of Isla Mayor, an island in the delta of the Guadalquivir River in southwestern Spain. The Doñana National Park is a marshland nature reserve that has been proclaimed... |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on lg.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Unique ID of original document | 7DC3F616BF3E0A1390032E5FFEB82940 |
---|---|
Software used | NIKON D4 Ver.N.10 |
IIM version | 2 |