TY - BOOK AU - Jørgensen,Sven Erik TI - Ecosystem ecology SN - 9780444534668 (hardback) AV - QH541 ECO PY - 2009/// KW - Biotic communities KW - Ecology KW - Ecological zones N1 - "A derivative of Encyclopedia of ecology"--Cover; Includes bibliographical references and index; Ecosystems as systems -- Ecosystem properties -- Ecosystems ER -