Table 3 Mean values for each species and treatment for D9 Pmax (μmols electrons m−2 s−1) and Ek (μmols photons m−2 s−1), Hsat time in minutes, DSPI (mol m−2), and 9-day growth (%). *Ulva T2.5 experienced excessive tissue sloughing as a likely reproductive response to lunar phase and was not included here.

From: Divergent responses of native and invasive macroalgae to submarine groundwater discharge

Treatment

Species

Pmax

Ek

Hsat time

DSPI

Growth

35‰/0.5 μmol N

(T0)

Ul

31.1

27.2

507

3.4

4.5

Hm

43.9

51.8

469

3.5

18.2

35‰/14 μmol N

(T1)

Ul

52.3

65.2

404

4.4

30.6

Hm

47.5

71.4

414

4.4

35.3

28‰/27 μmol N

(T2)

Ul

53.3

72.8

398

4.5

38.1

Hm

43.8

70.7

421

4.2

19.9

28‰/53 μmol N

(T2.5)

Ul*

NA

NA

NA

NA

NA

Hm

58.7

93.8

410

5.2

34.6

18‰/53 μmol N

(T3)

Ul

72.3

105.3

344

4.6

45.4

Hm

49.0

70.5

420

4.3

23.8

11‰/80 μmol N

(T4)

Ul

74.3

110.4

333

4.6

50.0

Hm

53.1

78.3

394

4.4

11.0