Figure 1.
Location of the three sampling stations in the studied pond of the Belezma biosphere reserve (Northern East of Algeria)
Abbildung 1. Standort der drei Probenahmestationen im untersuchten Teich des Biosphärenreservats Belezma (Nordostalgerien)
Table 1.
Seasonally variation of physicochemical parameters of water summarized with their means (±SD) and ranges for the natural pond of Belezma biosphere reserve
Tabelle 1. Saisonale Variation der physikalisch-chemischen Parameter des Wassers, zusammengefasst mit ihren Mittelwerten (±SD) und Bereichen für den Naturteich des Biosphärenreservats Belezma
| Water parameters | Spring 2017 Mean ± SD Range | Summer 2017 Mean ± SD Range | Autumn 2017 Mean ± SD Range | Winter 2018 Mean ± SD Range | Spring 2018 Mean ± SD Range | Summer 2018 Mean ± SD Range | Autumn 2018 Mean ± SD Range | Winter 2019 Mean ± SD Range | Spring 2019 Mean ± SD Range |
|---|---|---|---|---|---|---|---|---|---|
| Water temperature (°C) | 17.53±4.93 | 27.24±1.54 | 17.74±3.39 | 8.80±2.03 | 15.32±3.51 | 25.08±3.49 | 17.74±4.08 | 08.89±2.16 | 10.37±0.06 |
| 13.00–22.10 | 25.30–29.10 | 14.20–22.00 | 6.00–10.20 | 11.60–19.70 | 22.60–29.80 | 14.20–23.20 | 06.80–11.70 | 10.30–10.4 | |
| pH | 7.67±0.24 | 7.50±0.26 | 8.00±0.47 | 7.96±0.27 | 7.88±0.24 | 7.58±0.26 | 7.37±0.21 | 7.67±0.31 | 8.67±0.13 |
| 7.30–7.96 | 7.23–7.91 | 7.33–8.44 | 7.62–8.48 | 7.56–8.14 | 7.15–8.02 | 7.18–7.67 | 7.37–8.13 | 8.54–8.79 | |
| Conductivity (μs cm−1) | 478.2±52.2 | 512.0±79.4 | 579.9±47.9 | 609.9±81.1 | 479.2±48.0 | 572.1±30.1 | 562.9±59.1 | 533.1±72.2 | 563.3±11.9 |
| 423–533 | 413–616 | 532–652 | 511–729 | 407–537 | 534–621 | 467–613 | 439–622 | 556–577 | |
| Salinity (‰) | 0.15±0.05 | 0.13±0.05 | 0.20±0.00 | 0.26±0.05 | 0.16±0.05 | 0.22±0.04 | 0.20±0.00 | 0.17±0.10 | 0.20±0.00 |
| 0.10–0.20 | 0.10–0.20 | 0.20–0.20 | 0.20–0.30 | 0.10–0.20 | 0.20–0.30 | 0.20–0.20 | 0.10–0.30 | 0.20–0.20 | |
| Turbidity (NTU) | 2.60±0.42 | 5.31±2.07 | 5.39±2.76 | 5.01±2.30 | 4.14±1.75 | 4.96±1.64 | 6.78±3.55 | 7.32±5.56 | 7.15±1.16 |
| 2.11–3.16 | 2.77–8.44 | 1.79–9.32 | 2.20–9.27 | 2.02–7.60 | 2.49–8.02 | 2.09–12.94 | 2.24–17.60 | 6.29–8.47 | |
| TDS (mg L−1) | 201.0±8.9 | 191.4±14.1 | 192.0±12.8 | 188.6±8.8 | 204.9±15.2 | 206.2±12.6 | 212.6±21.9 | 191.4±18.2 | 272.0±20.0 |
| 184–233 | 171–211 | 174–213 | 201–177 | 177–224 | 189–223 | 175–242 | 162–233 | 259–295 | |
| NH4+ (mg L−1) | 0.01±0.08 | 0.01±0.00 | 0.01±0.01 | 0.01±0.01 | 0.01±0.01 | 0.01±0.01 | 0.01±0.01 | 0.01±0.01 | 0.01±0.00 |
| 0.00–0.03 | 0.01–0.02 | 0.00–0.01 | 0.00–0.01 | 0.00–0.01 | 0.01–0.02 | 0.00–0.02 | 0.00–0.02 | 0.01–0.01 | |
| NO3− (mg L−1) | 0.41±0.22 | 0.06±0.07 | 0.15±0.13 | 0.05±0.7 | 0.07±0.11 | 0.09±0.10 | 0.27±0.22 | 0.14±0.17 | 0.01±0.00 |
| 0.16–0.81 | 0.00–0.19 | 0.00–0.39 | 0.00–0.18 | 0.00–0.28 | 0.00–0.31 | 0.00–0.71 | 0.00–0.39 | 0.01–0.01 | |
| NO2−(mg L−1) | 0.01±0.04 | 0.01±0.00 | 0.01±0.00 | 0.01±0.00 | 0.01±0.01 | 0.01±0.00 | 0.01±0.00 | 0.01±0.01 | 0.01±0.00 |
| 0.00–0.01 | 0.01–0.01 | 0.01–0.02 | 0.00–0.01 | 0.00–0.01 | 0.00–0.01 | 0.01–0.02 | 0.00–0.03 | 0.01–0.01 | |
| Dissolved oxygen (mg L−1) | 3.64±0.27 | 3.66 ±0.27 | 3.62±0.20 | 4.35±0.48 | 3.50±0.24 | 3.83±0.36 | 3.85±0.57 | 3.55±0.33 | 3.72±0.015 |
| 3.33–4.12 | 3.29–4.16 | 3.34–4.04 | 3.67–5.11 | 3.16–4.02 | 3.37–4.32 | 3.15–4.64 | 3.13–4.00 | 3.55–3.82 |
Table 2.
Taxonomic list, abundance frequency, and accuracy scale of phytoplankton taxa identified in the pond of Belezma biosphere reserve. F%: Abundance frequency. Constant taxa (C), accessory taxa (Ac), accidental taxa (A), very accidental taxa (Va)
Tabelle 2. Taxonomische Liste, Häufigkeit und Genauigkeitsskala der im Teich des Biosphärenreservats Belezma identifizierten Phytoplankton-Taxa. F%: Häufigkeit der Häufigkeit. Konstante Taxa (C), akzessorische Taxa (Ac), zufällige Taxa (A), sehr zufällige Taxa (Va).
| Phylum | Class | Order | Family | Genus/species | F% (accuracy scale) |
|---|---|---|---|---|---|
| Euglenozoa | Euglenophyceae | Euglenales | Euglenaceae | Euglena sp Ehrenberg, 1830 | 0.04 (A) |
| Phacaceae | Phacus sp Dujardin, 1841 | 0.13 (C) | |||
| Mizozoa | Dinophyceae | Gymnodiniales | Gymnodiniaceae | Gymnodinium sp Stein, 1878 | 0.10 (C) |
| Prorocentrales | Prorocentraceae | Prorocentrum sp Ehrenberg, 1834 | 0.01 (Va) | ||
| Thoracosphaerales | Thoracosphaeraceae | Scrippsiella sp Balech, 1965 | 0.06 (Ac) | ||
| Charophyta | Zygnematophyceae | Desmidiales | Closteriaceae | Closterium moniliferum Ehrenberg ex Ralfs, 1848 | 0.01 (Va) |
| Closterium sp Nitzsch ex Ralfs, 1848 | 0.10 (C) | ||||
| Desmidiaceae | Cosmarium sp Corda ex Ralfs, 1848 | 0.15 (C) | |||
| Spirogyrales | Spirogyraceae | Spirogyra sp Link, 1820 | 0.31 (Ac) | ||
| Zygnematales | Zygnemataceae | Zygnema stellinum Müller & Agardh, 1824 | 0.07 (A) | ||
| Cyanobacteria | Cyanophyceae | Nostocales | Aphanizomenonaceae | Anabaena sp Bory de Saint-Vincent ex Bornet & Flahault, 1886 | 12.27 (C) |
| Chroococcales | Chroococcaceae | Chroococcus turgidus Kützing Nägeli, 1849 | 0.13 (A) | ||
| Microcystaceae | Microcystis aeruginosa Kützing, 1846 | 1.29 (C) | |||
| Microcystis sp Lemmermann, 1907 | 0.46 (Ac) | ||||
| Merismopedia sp Meyen, 1839 | 0.96 (Ac) | ||||
| Oscillatoriales | Microcoleaceae | Lyngbya sp Gomont, 1892 | 7.15 (C) | ||
| Oscillatoriaceae | Oscillatoria sp Gomont, 1892 | 27.62 (C) | |||
| Pseudanabaenales | Pseudanabaenaceae | Pseudanabaena sp Lauterborn, 1915 | 2.34 (C) | ||
| Bacillariophyta | Bacillariophyceae | Thalassiophysales | Catenulaceae | Amphora ovalis Kützing, 1844 | 0.22 (C) |
| Amphora sp Kützing, 1844 | 0.88 (C) | ||||
| Achnanthales | Cocconeidaceae | Cocconeis sp Ehrenberg, 1836 | 0.60 (C) | ||
| Cymbellales | Cymbellaceae | Cymbella sp Agardh, 1830 | 0.07 (Ac) | ||
| Fragilariales | Fragilariaceae | Diatoma sp Bory, 1824 | 0.03 (Ac) | ||
| Synedra ulna Ehrenberg, 1832 | 0.86 (C) | ||||
| Synedra sp Ehrenberg, 1830 | 0.62 (C) | ||||
| Naviculales | Pleurosigmataceae | Gyrosigma acuminatum Kützing Rabenhorst, 1853 | 0.15 (C) | ||
| Naviculaceae | Navicula gregaria Donkin, 1861 | 0.76 (C) | |||
| Navicula radiosa Kützing, 1844 | 2.47 (C) | ||||
| Navicula sp Bory de Saint-Vincent, 1822 | 0.43 (C) | ||||
| Melosirales | Melosiraceae | Melosira granulata Ehrenberg, 1861 | 6.52 (C) | ||
| Melosira sp Agardh, 1824 | 2.37 (C) | ||||
| Bacillariales | Bacillariaceae | Nitzschia longissima Brébisson Ralfs, 1861 | 0.57 (C) | ||
| Nitzschia sp Hassall, 1845 | 13.18 (C) | ||||
| Chlorophyta | Chlorophyceae | Chlamydomonadales | Tetrasporaceae | Tetraspora sp Link ex Desvaux,1818 | 1.56 (C) |
| Chlamydomonadaceae | Chlamydomonas sp Ehrenberg, 1833 | 3.71 (C) | |||
| Goniaceae | Gonium sp Muller, 1773 | 0.02 (Va) | |||
| Volvocaceae | Volvox sp Linnaeus, 1758 | 0.57 (Ac) | |||
| Pandorina sp Bory de Saint-Vincent, 1824 | 0.07 (A) | ||||
| Sphaeropleales | Hydrodictyaceae | Hydrodictyon sp Roth, 1797 | 0.44 (Ac) | ||
| Pediastrum boryanum Turpin Meneghini, 1840 | 0.50 (C) | ||||
| Pediastrum simplex Meyen, 1829 | 0.59 (C) | ||||
| Pediastrum duplex Meyen, 1829 | 0.10 (A) | ||||
| Pediastrum sp Meyen, 1829 | 6.22 (C) | ||||
| Tetrahedron sp Kutzing, 1845 | 0.15 (Ac) | ||||
| Radiococcaceae | Palmodictyon sp Kutzing, 1845 | 0.03 (Va) | |||
| Scenedesmaceae | Scenedesmus acuminatus Lagerheim Chodat, 1902 | 0.13 (Ac) | |||
| Scenedesmus quadricauda Turpin Brébisson, 1835 | 0.43 (C) | ||||
| Scenedesmus opoliensis Richter, 1895 | 0.02 (Va) | ||||
| Scenedesmus sp Meyen, 1829 | 0.05 (Ac) | ||||
| Oedogoniales | Oedogoniaceae | Oedogonium sp Link ex Hirn, 1900 | 2.45 (C) |
Figure 2.
Seasonal variation of the communities' composition of phytoplankton in a natural mountain pond of Belezma biosphere reserve
Abbildung 2. Saisonale Variation der Phytoplanktonzusammensetzung der Gemeinschaften in einem natürlichen Bergteich des Biosphärenreservats Belezma
Table 2.
Taxonomic list, abundance frequency, and accuracy scale of phytoplankton taxa identified in the pond of Belezma biosphere reserve. F%: Abundance frequency. Constant taxa (C), accessory taxa (Ac), accidental taxa (A), very accidental taxa (Va).
Tabelle 2. Taxonomische Liste, Häufigkeit und Genauigkeitsskala der im Teich des Biosphärenreservats Belezma identifizierten Phytoplankton-Taxa. F%: Häufigkeit der Häufigkeit. Konstante Taxa (C), akzessorische Taxa (Ac), zufällige Taxa (A), sehr zufällige Taxa (Va).
| Abundance and diversity | Spring 2017 | Summer 2017 | Autumn 2017 | Winter 2018 | Spring 2018 | Summer 2018 | Autumn 2018 | Winter 2019 | Spring 2019 |
|---|---|---|---|---|---|---|---|---|---|
| N | 2783 | 4321 | 2562 | 1413 | 4320 | 5371 | 3390 | 1275 | 595 |
| F% | 11 | 17 | 10 | 5 | 17 | 21 | 13 | 5 | 2 |
| S | 44 | 43 | 43 | 38 | 48 | 48 | 45 | 38 | 37 |
| H′ | 2.60 | 2.30 | 2.29 | 2.31 | 2.70 | 2.52 | 2.20 | 2.40 | 2.30 |
| E | 0.69 | 0.61 | 0.61 | 0.64 | 0.70 | 0.65 | 0.58 | 0.66 | 0.64 |
Figure 3.
Canonical correspondence analysis (CCA) plots showing the distribution of phytoplankton according to seasons and physicochemical parameters of water in the pond of the Belezma National Park reserve
Abbildung 3. Diagramme der kanonischen Korrespondenzanalyse (CCA), die die Verteilung des Phytoplanktons nach Jahreszeiten und physikalischchemischen Parametern des Wassers im Teich des Belezma-Nationalparkreservats zeigen