Reaction of an estuarine food web to disturbance: Lindeman's perspective
作者： N Niquil , A Baeta , JC Marques , A Chaalali , J Lobry
DOI: 10.3354/MEPS10885
关键词: Food chain 、 Food web 、 Ecosystem health 、 Ecosystem 、 Zostera 、 Trophic level 、 Ecology 、 Ecological pyramid 、 Ecological indicator 、 Environmental science
摘要: Currently, a central demand of coastal and marine food web researchers is the search for holistic functional ecosystem health indicators. Based on concepts directly derived from R. L. Lindeman's work (Lindeman 1942; Ecology 23:399-418), 6 estuarine models were analysed to assess potential impact multiple disturbances trophic state webs. The described Zostera noltii meadow bare sediment site in Mondego estuary, Portugal, during 3 distinct time periods corresponding (1) nutrient enrichment, (2) imple- mentation mitigation measures, (3) after centenary flood. We tested 4 candidate metrics, trophic-dynamic proposed by Lindeman (1942): chain length, detritivory/herbivory ratio, efficiency per level mean effi- ciency. this case study, none metrics are yet ready be used se as operational quantify interpret ecosystem's state. Trophic appeared sensitive external pressures. However, ciency system might not sufficient draw conclusions about ecosystem: should observed at order better understand cascading effects within
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