Environmental Controls of Marine Food Webs: Food Habits of Seabirds in the Eastern Chukchi Sea

摘要: Food habits of thick-billed murres (Uria lomvia), common (U. aalge), and black-legged kittiwakes (Rissa tridactyla) were examined at two breeding colonies in the eastern Chukchi Sea between 1976 1980. Cods (Gadidae), sculpins (Cottidae), sand lance (Ammodytes hexapterus), capelin (Mallotus villosus) dominant (biomass) prey murres. Cods, lance, kittiwakes. Annual changes consumption fishes by suggest that available fish biomass was low 1977, but increased each year through 1979 The average size several taxa eaten birds also most years. Invertebrates less important than all years, frequently murres, more 1976–77 1978–79. A pattern climatic cooling early 1970's followed warming second half ...