Table 2. Values of the median lethal concentrations (respective 95% confidence limits) of copper (adapted from [28]) and of median, lower and upper quartile lethal concentrations of NaCl (LC_{25,48 h}, LC_{50,48 h}, LC_{75,48 h}, respectively) for the five clonal lineages of Daphnia longispina, after being exposed to this metal for 48 h.

	LC50,48h Cu	LC25,48h NaCl	LC50,48h NaCl	LC75,48h NaCl
E99	163 (156–170)	2.48 (2.43–2.53)	2.50 (2.47–2.57)	2.57 (2.53–2.62)
N91	158 (138–175)	2.64 (2.47–2.74)	2.80 (2.69–2.92)	2.99 (2.88–3.16)
N116	141 (133–148)	2.57 (2.27–2.74)	2.85 (2.65–3.00)	3.16 (3.01–3.41)
N31	51.6 (49.7–53.5)	2.27 (1.45–2.49)	2.48 (1.90–2.70)	2.72 (2.45–2.91)
E89	18.2 (13.1–21.1)	2.55 (2.24–2.72)	2.82 (2.62–2.97)	3.13 (2.97–3.38)