Images
Click any image to enlarge...
LM image scalebar = 10 µm = pixels not measured
Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 14-34µm |
| Width: | 6-13µm |
| Striae: | 22-32 striae in 10µm |
Description:
Valves in girdle view elliptical with broadly rounded, sometimes protracted ends. Individual valves strongly dorsiventral with a convex dorsal side and a slightly concave to straigth ventral side (L 14-34µm, W 6-13µm, 22-32 striae in 10µm). Width of individual valve 3-6µm. In LM, no distinction visible between mantle and valve face. In SEM sometimes a small hyaline area is present. Striae uniseriate, consisting of several lineolae. In the middle, 5-7 striae more spaced with larger lineolae. Striae completely lacking or highly reduced on the ventral side. Raphe present on typical raphe ledge with central endings dorsally curved and terminal endings sharply bent towards the dorsal margin.
| Morphology: | Amphoroid |
|---|---|
| Distribution: |
Autecology:
Notes:
A. veneta is frequently recorded on Ile de la Possession, but only in open waterbodies from the Jardin Japonais. Only very few observations were made in mosses and almost none in soils. When present, A. veneta seems to prefer higher pH-values (8-10) and a relatively elevated specific conductance (±270µS/cm).Kerguelen (Le Cohu & Maillard 1986), Maritime Antarctic Region (Van de Vijver & Beyens 1997b), South Georgia (Van de Vijver & Beyens 1996, 1997a), James Ross Island (Björck et al. 1996), South Shetland Islands (Opalinski 1972, Björck et al. 1993), South Orkney Islands (Oppenheim & Greenwood 1990, Oppenheim 1990), Continent (Roberts & McMinn 1996, 1999), Horseshoe Island (Wasell & Hakansson 1992), Macquarie Island (McBride et al. 1999).
Other sites with Amphora veneta
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Kützing 1986 |
|---|---|
| Length: | |
| Width: | |
| Striae: |
Original Description:
New combination
| Author: |
|---|
Citations
Index Nominum Algarum (INA):
- Original
- If an INA link is available, it will be shown above
- The INA is a bibliographic reference "card file" for algal taxonomy, containing nearly 200,000 names of algae (in the broad sense).
