New fossil genus and new extant species of diatoms (Stephanodiscaceae, Bacillariophyceae) from Pleistocene sediments in the Neotropics (Guatemala, Central America): adaptation to a changing environment?
Author
Paillès, Christine
Aix-Marseille Université, CNRS, IRD, Collège de France, INRAE, CEREGE, 13545 Aix-en-Provence cedex 4, France.
pailles@cerege.fr
Author
Sylvestre, Florence
Aix-Marseille Université, CNRS, IRD, Collège de France, INRAE, CEREGE, 13545 Aix-en-Provence cedex 4, France.
sylvestre@cerege.fr
Author
Tonetto, Alain
Aix-Marseille Université, Fédération de Chimie, PRATIM, 3 Place Victor Hugo, 13331 Marseille Cedex 3, France.
alain.tonetto@univ-amu.fr
Author
Mazur, Jean-Charles
Aix-Marseille Université, CNRS, IRD, Collège de France, INRAE, CEREGE, 13545 Aix-en-Provence cedex 4, France.
mazur@cerege.fr
Author
Conrod, Sandrine
Aix-Marseille Université, CNRS, IRD, Collège de France, INRAE, CEREGE, 13545 Aix-en-Provence cedex 4, France.
conrod@cerege.fr
text
European Journal of Taxonomy
2020
2020-11-30
726
1
23
journal article
10.5852/ejt.2020.726.1169
778b3715-635c-4d46-9d08-8d355fa91d5f
2118-9773
4298412
Table 1 (continued). Selected limnological and chemical data from lakes (single measurements in 2005 or 2008) containing Discostella gabinii Paillès & Sylvestre sp. nov. and Cyclotella petenensis Sylvestre, Paillès & Escobar in the Yucatan Peninsula after Pérez et al. (2013). | | Yucatan lowlands | | Cenotes | Coastal | Ponds |
|---|
| Lake name | Ocom | Coba | Yalahau-05 Yalahau-08 | Juarez | Progreso | Belize 2 |
|---|
| Limnological parameters |
|---|
| Max sampling depth (m) | 10 | 0.5 | 11.5 | 11.5 | 0.5 | 3.15 | 0.5 |
|---|
| Altitude (m a.s.l.) | 1 | 7 | 2 | 2 | 14 | 5 | 33 |
|---|
| Surface area (km2) | 0.25 | 0.35 | 0.25 | 0.25 | 0.03 | 7.2 | |
|---|
| Temp. (°C) | 25 | 28.9 | 25 | 28.8 | 27.9 | 26.4 | 27.4 |
|---|
| DO 2 (mg / L) | 0.8 | 8.7 | 0.7 | 8.7 | 8.7 | 7 | 7.5 |
|---|
| pH | 7.4 | 8.5 | 8.6 | 8.9 | 8.1 | 8.2 | 8.0 |
|---|
| Cond. (µS / cm) | 777 | 1213 | 1138 | 2350 | 643 | 2040 | 244 |
|---|
| Secchi depth (m) | 5.5 | 0.9 | n.d. | 1.1 | 1.6 | 1.3 | n.d. |
|---|
| Chemical variables (mg / L) |
|---|
| HCO - 3 | 130.6 | 256.1 | 607.2 | 707.4 | 292.7 | 213.4 | 180.1 |
|---|
| SO 2- 4 | 685.9 | n.d. | 337.1 | n.d. | n.d. | n.d. | 6.4 |
|---|
| Cl- | 114.7 | n.d. | 145.4 | n.d. | n.d. | n.d. | 2.6 |
|---|
| Na+ | 125.2 | 126.5 | 224 | 336.5 | 53.3 | 483.6 | 3.66 |
|---|
| K+ | 3.5 | n.d. | 16.9 | n.d. | n.d. | n.d. | 1.6 |
|---|
| Ca2+ | 155.2 | 99.7 | 18.8 | 89.6 | 68.3 | 189.4 | 45.0 |
|---|
| Mg2+ | 44.6 | 5.4 | 101.4 | 136.8 | 23.0 | 59.6 | 2.28 |
|---|