DOI: 10.1016/j.marenvres.2020.104882
论文题名: Bioturbation may not always enhance the metabolic capacity of organic polluted sediments
作者: Casado-Coy N. ; Sánchez-Jerez P. ; Holmer M. ; Sanz-Lazaro C.
刊名: Marine Environmental Research
ISSN: 1411136
出版年: 2020
卷: 155 语种: 英语
英文关键词: Aquaculture
; Bioirrigation
; Bioturbation
; Metabolic capacity
; Organic matter
Scopus关键词: Anoxic water
; Aquaculture
; Biogeochemistry
; Biological materials
; Marine engineering
; Metabolism
; Organic compounds
; Pollution
; Submarine geology
; Bio-irrigation
; Biogeochemical fluxes
; Bioturbation
; Ecological functions
; Metabolic capacities
; Metabolic pathways
; Microcosm experiments
; Polluted sediments
; Oxic sediments
; organic matter
; aquaculture
; bioturbation
; marine sediment
; metabolism
; organic matter
; organic pollutant
; polychaete
; sediment pollution
; Article
; bioaccumulation
; biogeochemistry
; bioturbation
; controlled study
; ion exchange chromatography
; limit of quantitation
; Lumbrineris latreilli
; metabolic capacity
; microcosm
; nonhuman
; pH
; Polychaeta
; sediment
; Lumbrineris latreilli
; Polychaeta
英文摘要: Marine sediments are a major sink of organic matter, playing a crucial role in the global cycling of major elements. Macrofauna, through the reworking of particles and movement of solutes (bioturbation), enhances oxic conditions and the sediment metabolic capacity. Increases in the inputs of organic matter can lead to profound changes in the seabed and impact benthic ecological functions. Through a microcosm experiment, the effect of bioturbation of the polychaete Lumbrineris latreilli on biogeochemical fluxes under scenarios of increasing loads of organic matter was quantified. We found that bioturbation can buffer the negative consequences of anoxic conditions produced by organic enrichment, preventing the build-up of toxic by-products derived from anaerobic metabolic pathways by maintaining oxic conditions. However, the maintenance of oxic conditions by bioturbation is at the expense of limiting the sediment metabolic capacity. The maintenance of oxic conditions may limit anaerobic metabolic pathways, and consequently, the metabolic capacity of sediment. Thus, under organic matter pollution conditions, bioturbation may lessen the metabolic capacity of the sediment. © 2020Bioturbation can promote oxic conditions while diminishing the metabolic capacity of sediment under a certain level of organic pollution. © 2020 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159115
Appears in Collections: 气候变化与战略
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作者单位: Department of Marine Science and Applied Biology, University of Alicante, PO Box 99, Alicante, E-03080, Spain; Multidisciplinary Institute for Environmental Studies (MIES), University of Alicante, P.O. Box 99, Alicante, E-03080, Spain; Institute of Biology, University of Southern Denmark, Campusvej 55, Odense, 5230, Denmark; Department of Ecology, University of Alicante, PO Box 99, Alicante, E-03080, Spain
Recommended Citation:
Casado-Coy N.,Sánchez-Jerez P.,Holmer M.,et al. Bioturbation may not always enhance the metabolic capacity of organic polluted sediments[J]. Marine Environmental Research,2020-01-01,155