Individual-based energetic model suggests bottom up mechanisms for the impact of coastal hypoxia on Pacific harbor seal (Phoca vitulina richardii) foraging behavior

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• 作者：Sheanna Steingass^a ; ^{steingas@oregonstate.edu} ; Markus Horning^a ; ^b
• 关键词：Foraging success ; Upwelling ; California Current System ; Conceptual model ; Oregon
• 刊名：Journal of Theoretical Biology
• 出版年：2017
• 出版时间：7 March 2017
• 年：2017
• 卷：416
• 期：Complete
• 页码：190-198
• 全文大小：1074 K
• 卷排序：416

文摘

An individual, conceptual model of Pacific harbor seal foraging energetics was created in STELLA modeling software (© iSeeSystems). Efficiency of foraging on three species of prey was tested during varying levels of upwelling-driven coastal hypoxia. Increased hypoxia led to differentiation of prey benefits, suggesting switches in foraging tactics may occur during coastal hypoxia to maintain optimal foraging. This model suggests a mechanism by which coastal hypoxia may result in increased foraging efficiency for Pacific harbor seals due to prey habitat compression.