Table 4. Phytoplankton, cyanobacteria and microcystin parameters.
Site | CB fraction | H’Phyto | H’Zoo | Daphnia/cal. cop. | Intracell. MC | Bioaccum. MC |
1 | 44.0ab | 1.15ab | 0.72ab | 0.78 | 0.68ab | 105.3 |
(12.2–82.8) | (0.56–1.24) | (0.24–1.06) | (0.00–2.42) | (0.13–6.63) | (10.1–139.2) | |
2 | 39.7ab | 1.19ab | 0.80ab | 0.91 | 1.15ab | 34. 5 (4) |
(10.2–88.5) | (0.48–1.31) | (0.16–1.19) | (0.00–1.77) | (0.26–5.74) | (11.1–131.6) | |
3 | 46.4ab | 1.15ab | 0.59a | 0.61 | 0.30a) | 12.2 |
(22.0–86.8) | (0.53–1.26) | (0.24–0.86) | (0.00–3.11) | (0.00–7.59) | (0.0–104.8) | |
4 | 51.4ab | 1.11ab | 0.68a | 0.54 | 2.07ab | 57.0 |
(12.5–89.3) | (0.44–1.21) | (0.44–0.74) | (0.00–4.44) | (0.20–5.69) | (1.1–124.4) | |
5 | 67.8b | 0.72a | 0.73a | 0.72 | 9.59a | 70.19 (3) |
(21.0–90.09) | (0.37–1.15) | (0.22–0.89) | (0.00–1.86) | (0.40–557.57) | (0.0–72.8) | |
6 | 30.8a | 1.13ab | 0.99b | 1.23 | 0.23ab | 28.8 (4) |
(7.3–80.2) | (0.71–1.28) | (0.68–1.14) | (0.26–13.91) | (0.00–2.52) | (0.0–40.8) | |
7 | 28.6a | 1.23b | 1.06b | 1.04 | 0.15b | 63.01 |
(9.5–74.7) | (0.82–1.30) | (0.77–1.34) | (0.44–3.03) | (0.00–0.90) | (16.9–187.0) |
Median and range (minimum – maximum) for phytoplankton, cyanobacteria, microcystin, and zooplankton parameters measured between August and December 2010 for each site at Lake Yangebup. CB fraction = cyanobacterial biomass as % of total phytoplankton biomass, H’Phyto = Shannon-Wiener Index based on phytoplankton biomass, H’Zoo = Shannon-Wiener Index based on zooplankton biomass, Daphnia/cal. cop. = ratio of Daphnia to calanoid copepoda, Intracell. MC = intracellular microcystin concentration (µg L−1), Bioaccum. MC = bioaccumulated microcystin concentration in zooplankton (µg MC g−1 dry mass). N = 5 unless stated otherwise in superscript brackets. Superscript letters indicate results of post-hoc tests for differences between sites for each parameter with sites having identical letters being not significantly different.