Animals
; Biological materials
; Biomass
; Dredges
; Dredging
; Ecology
; Bay of Seine
; Dredged material disposal
; Ecological network analysis
; Ecopath
; Trophic models
; Ecosystems
; biomass
; dredge spoil
; ecological modeling
; ecosystem response
; fish
; food web
; invertebrate
; trophic interaction
; biomass
; deposit feeder
; dumping
; estuary
; experimental study
; filter feeder
; food web
; habitat
; invertebrate
; model
; nonhuman
; omnivore
; predator
; recycling
; animal
; bay
; environmental monitoring
; fish
; food chain
; France
; pollution
; sediment
; waste disposal
; Bay of Seine
; English Channel
; France
; Seine Estuary
; Invertebrata
; Animals
; Bays
; Biomass
; Environmental Monitoring
; Environmental Pollution
; Estuaries
; Fishes
; Food Chain
; France
; Geologic Sediments
; Invertebrates
; Refuse Disposal
Scopus学科分类:
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
An experimental study was conducted to assess the physical and biological impacts of muddy fine sand dredged material dumped on a medium sand site Machu offshore the Seine Estuary. Complementary trophic web modelling tools were applied to the Machu ecosystem to analyse the effects of dumping operations. Results show that, after the dumping operations, the biomass of fish increased while invertebrate biomass remained relatively stable through time. Nevertheless, the biomasses of benthic invertebrates, omnivores/scavengers and predators showed some increases, while non-selective deposit feeders and filter feeders decreased. At the ecosystem level, results show that the total ecosystem activity, the ascendency and the overall omnivorous character of the food-web structure increased after dumping operations, whereas recycling subsequently decreased. Finally, the fine and medium sand habitat offshore from the Seine estuary, which undergoes regular natural physical perturbations, shows a high resilience after a short dumping phase. � 2017 Elsevier Ltd
Normandie Univ., UNICAEN, UNIROUEN, CNRS UMR 6143 M2C, Laboratoire Morphodynamique Continentale et C�ti�re, 24 rue des Tilleuls, Caen, France; Normandie Univ., UNICAEN, UMR BOREA (MNHN, UPMC, CNRS-7208, IRD-207), Esplanade de la Paix, Caen Cedex, France; Cellule de Suivi du Littoral Normand, CSLN, 53 Rue de Prony, Le Havre, France
Recommended Citation:
Pezy J.-P.,Raoux A.,Marmin S.,et al. Before-After analysis of the trophic network of an experimental dumping site in the eastern part of the Bay of Seine (English Channel)[J]. Marine Pollution Bulletin,2017-01-01,118(2018-01-02)