Publication Type: | Journal Article |
Year of Publication: | 1968 |
Authors: | Bengtson, S-A, Svensson, B |
Journal: | Oikos |
Volume: | 19 |
Issue: | 1 |
Date Published: | 1968 |
ISBN Number: | 00301299 |
Keywords: | Calidris, Calidris alpina, Scolopacidae |
Abstract: | The marine invertebrate fauna of a sand bank in south Sweden was surveyed and migrating Calidris alpina (23 specimens) and C. minuta (6 specimens) were collected and their stomach contents analysed. The two species were found to exploit different food sources. C. alpina fed predominantly on Nereis diversicolor while C. minuta was insectivorous. The former foraged near the water's edge and in shallow water by boring with its bill in the sand. The latter confined itself to a narrow strip above the water's edge where it collected food items on the surface using sight to detect the prey. Corophium volutator and Bathyporeia pilosa, although occurring in great numbers, were not found to be exploited. The predation by the waders cannot appreciably have reduced the invertebrate fauna on the bank. |
URL: | http://www.jstor.org/stable/3564742 |
Short Title: | Oikos |
Taxonomic name: