File:Algue inhabituelle Basse-Deûle rive droite 1er mai 2016 b 01.JPG
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DescriptionAlgue inhabituelle Basse-Deûle rive droite 1er mai 2016 b 01.JPG |
Français : Algue trouvée dans le Canal de la Deûle, en grande quantité en mai 2016 sur une section de plus de 100 m, berge droite après la jonction avec la Moyenne-Deûle. Cette espèce semble en 2016 nouvellement présente sur ce site (absence ou rare l’année précédente). Quelques exemplaires avaient été trouvés en 2014-2015 dans la Moyenne-Deûle (qui reçoit des eaux plus propres (exhaure) depuis quelques années). Sur un même pied les « branches » présentent des aspects parfois différents (visible sur certaines photos). La taille d’une touffe (à cette époque, 1er mai) est de 1 à 2,5 cm. Couleur vert pâle (à foncé pour les tiges plus fines). L’algue et fixée sur des roches ou le grillage des gabions, toujours dans des zones relativement exposées au courant (ou à des contre-courants). L’eau de ce canal est très turbide. La photo est prise dans un récipient et dans une eau claire. (rem : dans d'autres régions, cette algue a parfois une couleur brune voire rougeâtre
English: Algae found in the Canal de la Deûle, in large quantities in May 2016 on a section of over 100 m, right bank after the junction with the Mid-Deûle. This species seems in 2016 newly on this site (absence or scarce the previous year). Same alguae were found in 2014-2015 in the Mid-Deûle (which receives the cleanest water (drainage) in recent years). On an equal footing "branches" have sometimes different sspectes (visible on some photos). The size of a tuft (at that time, May 1) is 1 to 2,5 cm. Pale green (darker for finer tweegs). This plant is fixed on rocks or mesh gabions, still in relatively exposed areas to the current (or against-current). The water of this canal is very turbid. The photo was taken in a container, in clear water. |
Date | |
Source | Own work |
Author | Lamiot |
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current | 11:22, 2 May 2016 | 4,000 × 3,456 (2.23 MB) | Lamiot (talk | contribs) | User created page with UploadWizard |
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Camera manufacturer | NIKON CORPORATION |
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Exposure time | 1/125 sec (0.008) |
F-number | f/8 |
ISO speed rating | 125 |
Date and time of data generation | 21:25, 1 May 2016 |
Lens focal length | 105 mm |
Copyright holder | |
Width | 6,000 px |
Height | 4,000 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS6 (Windows) |
File change date and time | 12:46, 2 May 2016 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.3 |
Date and time of digitizing | 21:25, 1 May 2016 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 6.965784 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 3.7 APEX (f/3.61) |
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DateTimeDigitized subseconds | 80 |
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Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 157 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS tag version | 0.0.3.2 |
Serial number of camera | 4566240 |
Lens used | 105.0 mm f/2.8 |
Date metadata was last modified | 14:46, 2 May 2016 |
Unique ID of original document | 86B363ABDBA0C585EC9F9364A75E6B01 |
IIM version | 32,768 |