Temporal Variability in Antarctic Marine Ecosystems: Periodic Fluctuations in the Phocid Seals

• Published in: Canadian Journal of Fisheries and Aquatic Sciences
• Main Authors: Testa, J. Ward, Oehlert, Gary, Ainley, David G., Bengtson, John L., Siniff, Donald B., Laws, Richard M., Rounsevell, David
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1991
• Subjects: Aquatic Science; Ecology, Evolution, Behavior and Systematics; Antarctic; The Antarctic; Antarctic Peninsula; McMurdo Sound; Weddell; Soi; Hydrurga; Antarc*; Antarctica; Crabeater Seals; Hydrurga leptonyx; Leopard Seal; Leopard Seals; Lobodon carcinophagus; Macquarie Island; Weddell Seals
• Online Access: http://dx.doi.org/10.1139/f91-081; http://www.nrcresearchpress.com/doi/pdf/10.1139/f91-081

Three species of seals around Antarctica have shown quasi-cyclic patterns in some aspect of their biology: the age structure of crabeater seals (Lobodon carcinophagus) around the Antarctic Peninsula has shown strong cohorts separated by 4- to 5-yr intervals; juvenile leopard seals (Hydrurga leptonyx...