Table 1 DFe and SSFe concentrations and annual yields for runoff and icebergs.

From: Climatically sensitive transfer of iron to maritime Antarctic ecosystems by surface runoff

 

Livingston Island (Hurd Peninsula)

Signy Island

South Georgia (East Cumberland Bay)

 

Glacial runoff

Non-glacial runoff

Icebergs

Glacial runoff

Non-glacial runoff>

Icebergs

Glacial runoff

Non-glacial runoff

Icebergs

Concentrations

 DFe (μg l−1)

75.2±62.8

32.5±14.7

1.84±1.17*

28.3±14.6

57.8±22.4

28.4±16.2

16.3±31.0

1.84±1.17*

 SSFe (μg l−1)

2,010±1,350

586±312

380 (150–970)**

148±310

165±241

13,100±7,980

127±135

380 (150–970)**

Yields

 Water (m a−1)

1.08

0.01

0.25

0.10

0.10

0.00

1.50

0.59

0.64

 DFe (kg km−2 a−1)

80.9

0.25

0.46

2.69

3.58

0.00

40.2

9.65

1.17

 SSFe (kg km−2 a−1)

2,160

4.59

94.8

10.3

16.5

0.00

18,450

74.8

241

  1. Concentration values are averages with s.d. for each site (*,** average values for DFe and SSFe, respectively, derived from other studies4,23).