File:Thalassia testudinum (turtle grass) (South Pigeon Creek estuary, San Salvador Island, Bahamas) 1 (15858492830).jpg
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Resúmen
DeskripshonThalassia testudinum (turtle grass) (South Pigeon Creek estuary, San Salvador Island, Bahamas) 1 (15858492830).jpg |
Thalassia testudinum König, 1805 - turtle grass. Plants are multicellular, photosynthesizing eucaryotes. Most species occupy terrestrial environments, but they also occur in freshwater and saltwater aquatic environments. The oldest known land plants in the fossil record are Ordovician to Silurian. Land plant body fossils are known in Silurian sedimentary rocks - they are small and simple plants (e.g., Cooksonia). Fossil root traces in paleosol horizons are known in the Ordovician. During the Devonian, the first trees and forests appeared. Earth's initial forestation event occurred during the Middle to Late Paleozoic. Earth's continents have been partly to mostly covered with forests ever since the Late Devonian. Occasional mass extinction events temporarily removed much of Earth's plant ecosystems - this occurred at the Permian-Triassic boundary (251 million years ago) and the Cretaceous-Tertiary boundary (65 million years ago). The most conspicuous group of living plants is the angiosperms, the flowering plants. They first unambiguously appeared in the fossil record during the Cretaceous. They quickly dominated Earth's terrestrial ecosystems, and have dominated ever since. This domination was due to the evolutionary success of flowers, which are structures that greatly aid angiosperm reproduction. Seagrasses are fully marine angiosperms. Seagrass beds only occur in the shallow water photic zone. Classification: Plantae, Angiospermophyta, Najadales, Hydrocharitaceae Locality: South Pigeon Creek estuary, southeastern San Salvador Island, eastern Bahamas |
Fecha | |
Fuente | Thalassia testudinum (turtle grass) (South Pigeon Creek estuary, San Salvador Island, Bahamas) 1 |
Outor | James St. John |
Lisensia
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15858492830. It was reviewed on 3 mei 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
3 mei 2015
Items portrayed in this file
ta portretá
some value
24 mart 2011
captured with ingles
Canon PowerShot D10 ingles
exposure time ingles
0.00625 sekònde
f-number ingles
8
focal length ingles
6.2 millimetre
ISO speed ingles
80
media type ingles
image/jpeg
photograph ingles
Historia di fail
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Fecha/Ora | Miniatura | Dimenshonnan | Usuario | Komentario | |
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aktual | 21:12, 3 mei 2015 | 4,000 × 3,000 (3.57 MB) | Natuur12 | Transferred from Flickr via Flickr2Commons |
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Metadato
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/160 sec (0.00625) |
F Number | f/8 |
ISO speed rating | 80 |
Date and time of data generation | 12:11, 24 mart 2011 |
Lens focal length | 6.2 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 01:36, 17 desèmber 2014 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 12:11, 24 mart 2011 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 7.3125 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905349794 |
Focal plane Y resolution | 16,483.516483516 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Manual white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Supported Flashpix version | 1 |
Image width | 4,000 px |
Image height | 3,000 px |
Date metadata was last modified | 20:36, 16 desèmber 2014 |
IIM version | 2 |