Open AccessEnergy consumption of ducks on øvre Heimdalsvatn
Author(s) -
Lien Leif
Publication year - 1978
Publication title -
ecography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.973
H-Index - 128
eISSN - 1600-0587
pISSN - 0906-7590
DOI - 10.1111/j.1600-0587.1978.tb00964.x
Subject(s) - metabolic rate , assimilation (phonology) , juvenile , ecology , energy consumption , consumption (sociology) , environmental science , food consumption , energy (signal processing) , biology , mathematics , statistics , economics , agricultural economics , social science , linguistics , philosophy , sociology , endocrinology
The energy consumption of the ducks is based on estimates of bird density and discovery chance together with juvenile production, metabolic rate and assimilation efficiency given in the literature. The approximate values for food energy consumed were 230000, 143000 and 165000 kcal in 1970, 1971 and 1972 respectively, or in terms of lake surface between 0.2 and 0.3 kcal m −2 yr −1 .