Disturbance, resource supply, and food-web architecture in streams

作者: Townsend , McIntosh , Kilroy , Scarsbrook , None

DOI: 10.1046/J.1461-0248.1998.00039.X

关键词: Disturbance (geology)EcologyDetritusFood webProductivity (ecology)Standing cropSTREAMSInvertebrateEnvironmental scienceTemporal scales

摘要: We studied food webs comprising fish, macroinvertebrates, and algae (identified to species or morphospecies) in small streams using a consistent methodology at the same spatial temporal scales. Our aim was test priori hypotheses derived from dynamic-demographic energetics models concerning effects of disturbance resource availability on food-web attributes. The regime bed affecting organisms measured 10 streams. also measures supply resources for animals terms algal primary productivity detritus standing crop. Both web size number links per were significantly negatively related mean intensity disturbance. Mean chain length had significant positive relationship with but not No attribute

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