Table 1 Estimated total and labile forms of excreted N and P arranged by seabird order

From: Seabird colonies as important global drivers in the nitrogen and phosphorus cycles

Order

Breeding birds and chicks (millions)

Number of species

Total N (Gg N y−1)

Labile N (Gg N y−1)

Total P (Gg P y−1)

Labile P (Gg P y−1)

Charadriiformes

291

127

116

9.8

19

5.1

Pelecaniformes

30

53

51

6.5

9

1.5

Procellariiformes

424

123

117

21.2

20

4.3

Sphenisciformes

59

17

307

35.0

51

10.9

TOTAL

804

320

591

72.5

99

21.8