Table 4. Mesocosm taxa abundances.
Treatment 1 | Treatment 2 | Treatment 3 | Treatment 4 | Treatment 5 | |||||||
Total | Range | Total | Range | Total | Range | Total | Range | Total | Range | ||
Bacteria | 4.810 | 5.78–4.59 | 4.410 | 1.09–5.39 | 4.310 | 9.18–3.49 | 4.210 | 4.88–3.79 | 3.010 | 9.88 –1.99 | |
Diatoms | (<10 µm) | 135 | 0–29 | 160 | 0–43 | 168 | 0–46 | 145 | 0–39 | 35 | 0–7 |
Diatoms | (>10 µm) | 0 | – | 0 | – | 1 | 0–1 | 2 | 0–1 | 6 | 0–2 |
Dinoflagellates | (<10 µm) | 30 | 0–3 | 32 | 0–7 | 30 | 0–7 | 30 | 0–9 | 14 | 0–3 |
Blue-green algae | 0 | – | 1 | 0–1 | 2 | 0–1 | 1 | 0–1 | 2 | 0–1 | |
Nano-flagellates | (<10 µm) | 2.05 | 4.93–2.14 | 1.85 | 4.93–2.24 | 1.75 | 2.53–1.84 | 2.05 | 3.93–1.74 | 3.35 | 1.03–2.24 |
Micro-flagellates | (>20 µm) | 1720 | 9–204 | 1264 | 29–124 | 1083 | 4–134 | 991 | 9–118 | 1438 | 27–120 |
Ciliates | 208 | 0.7–36.2 | 194 | 1–26 | 132 | 0–22 | 208 | 0–28 | 190 | 3–21 | |
Polychaetes | |||||||||||
Prionospio sp. | 235 | 0–78 | 12085 | 0–1873 | 16321 | 7–1892 | 13425 | 3–2285 | 1390 | 9–334 | |
Polychaete spp. | 0 | – | 2 | 0–1 | 0 | – | 0 | – | 0 | – | |
Nauplii | 2376 | 0–664 | 1349 | 0–598 | 18934 | 8–3906 | 11257 | 4–2040 | 1757 | 4–237 | |
Copepodites | 539 | 0–137 | 286 | 0–43 | 5430 | 0–644 | 2873 | 0–312 | 520 | 0–49 | |
Copepods | |||||||||||
Pseudodiaptomus hessei | 113 | 0–24 | 100 | 0–18 | 1673 | 0–238 | 1308 | 0–179 | 97.5 | 0–13 | |
Paracartia longipatella | 0 | – | 2 | 0–2 | 10 | 0–3 | 4 | 0–2 | 1 | 0–1 | |
Euterpina acutifrons. | 1 | 0–1 | 4 | 0–2 | 7 | 0–2 | 9 | 0–3 | 9 | 0–5 | |
Cyclopoid spp. | 3 | 0–3 | 11 | 0–4 | 42 | 0–11 | 23 | 0–5 | 4 | 0–2 | |
Amphipods | |||||||||||
Grandidierella sp. | 0 | – | 0 | – | 0 | – | 1 | 0–1 | 0 | – | |
Amphipod sp. | 0 | – | 0 | – | 1 | 0–1 | 1 | – | 0 | – | |
Isopod | |||||||||||
Exosphaeroma hylecoetes | 0 | – | 1 | 0–1 | 0 | – | 1 | 0–1 | 2 | 0–2 |
Values represent overall abundance and the range (min–max) in values per taxon. Each of bacteria, diatom, dinoflagellate, blue-green algae, flagellate, and ciliate abundances are presented in numbers per mL. All other taxa abundances presented as total numbers per sample (26.43 L).