TABLE 1.

Selected characteristics of the Mediterranean stations where in situ and dark incubations of Leu uptake were compared^a

Station	Location	Depth (m)	Chl a (mg m−3)	BN (cells ml−1)	Syne (cells ml−1)	Proc (cells ml−1)	PAR (μmol of photons m−2 s−1)	DIN (μM)
D	40°43.1′N, 2°50.8′E	5	0.72	5.5 × 105	4.7 × 104	2.6 × 103	588	0.69
		10	0.79	4.5 × 105	5.0 × 104	1.4 × 103	321	0.43
		20	0.80	5.1 × 105	4.6 × 104	2.7 × 103	95	0.17
		40	0.64	3.4 × 105	1.3 × 104	6.1 × 102	15	1.37
		60	0.28	3.8 × 105	9.9 × 103	5.8 × 102	4	1.99
F	41°7.7′N, 2°26.8′E	5	0.89	2.4 × 105	6.0 × 103	2.1 × 103	861	4.67
		10	0.84	2.4 × 105	4.5 × 103	2.0 × 102	611	4.67
		20	0.64	2.8 × 105	2.4 × 103	4.5 × 102	308	4.66
		40	0.18	3.0 × 105	1.0 × 103	2.1 × 102	79	3.93
		60	0.20	3.0 × 105	7.9 × 102	1.8 × 102	20	4.13
C	41°19.9′N, 2°15.3′E	5	2.27	1.9 × 105	5.4 × 102	5.4 × 102	609	2.50
		10	2.02	2.2 × 105	3.4 × 102	2.1 × 102	419	2.65
		20	2.34	2.7 × 105	—	—	199	2.61
		40	2.34	3.6 × 105	4.2 × 102	2.0 × 102	45	2.79
		60	0.47	3.2 × 105	1.0 × 103	2.9 × 102	10	4.08
Fb	41°7.7′N, 2°26.8′E	5	2.05	8.5 × 105	3.1 × 104	1.5 × 103	0	1.74
		40	0.53	3.6 × 105	6.2 × 103	2.0 × 103	0	2.81

^aThe average PAR irradiance received during in situ experiments and concentration of dissolved inorganic nitrogen (DIN) are also shown. —, not available. Abbreviations: BN, bacterial abundance; Syne, Synechococcus sp. abundance; Proc, Prochlorococcus sp. abundance. 

^bSampled at night.