|
Table 1. Isotopic values for estuarine and terrestrial invertebrate samples of Dunlin prey species.
| | | |
| Location |
Species sampled |
N |
δ15N(‰)
|
δ13C(‰)
|
| Mean | SD |
Mean | SD |
| |
|
| |
| Estuarine |
Clam (Macoma sp., Mya sp.) |
4† |
9.75 |
(2.73) |
-17.21 |
(3.53) |
|
|
Snails (Bittium sp.) |
8 |
9.90 |
(1.50) |
-11.00 |
(1.67) |
|
|
Polychaete annelids |
9‡ |
12.38 |
(0.79) |
-15.19 |
(1.88) |
|
|
Total |
21 |
10.94 |
(1.95) |
-13.98 |
(3.25) |
| |
| Terrestrial |
Earthworm (Lumbricus sp.) |
13 |
6.12 |
1.36 |
-24.94 |
(1.01) |
|
|
Insects (Coleoptera: Carabidae;
Diptera: Cyclorrhapha and Tipulidae) |
3§ |
5.76 |
(0.81) |
-27.18 |
(0.89) |
|
|
Total |
16 |
6.05 |
(1.26) |
-25.36 |
(1.31) |
|
| | |
†Each sample contained three individuals (i.e., 12 in total).
‡
Each sample contained >50 individuals, with exact total not counted.
§Each sample contained five individuals.
|