DOI: 10.1016/j.marpolbul.2015.03.026
Scopus记录号: 2-s2.0-84933675848
论文题名: Microplankton dynamics under heavy anthropogenic pressure. The case of the Bahía Blanca Estuary, southwestern Atlantic Ocean
作者: López Abbate M.C. ; Molinero J.C. ; Guinder V.A. ; Dutto M.S. ; Barría de Cao M.S. ; Ruiz Etcheverry L.A. ; Pettigrosso R.E. ; Carcedo M.C. ; Hoffmeyer M.S.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2015
卷: 95, 期: 1 起始页码: 305
结束页码: 314
语种: 英语
英文关键词: Climate
; Estuaries
; Eutrophication
; Microplankton
; Nutrient stoichiometry
; Path analysis
Scopus关键词: Ecology
; Ecosystems
; Estuaries
; Nutrients
; Phytoplankton
; Plankton
; Pollution
; Regression analysis
; Sewage
; Social networking (online)
; Stoichiometry
; Anthropogenic eutrophication
; Climate
; Ecological stoichiometry
; Microplankton communities
; Microplanktons
; Path analysis
; Phytoplankton abundances
; Southwestern Atlantic Ocean
; Eutrophication
; phosphorus
; sewage
; abundance
; environmental conditions
; eutrophication
; food web
; human activity
; microplankton
; nutrient dynamics
; path analysis
; phytoplankton
; stoichiometry
; algal growth
; anthropogenic pressure
; Article
; Atlantic Ocean
; biogeochemistry
; biomass
; controlled study
; estuary
; eutrophication
; food web
; microplankton
; nonhuman
; path analysis
; pelagic zone
; population abundance
; population dynamics
; sewage
; stoichiometry
; Argentina
; climate
; ecosystem
; estuary
; eutrophication
; food chain
; growth, development and aging
; phytoplankton
; plankton
; sewage
; water pollution
; Argentina
; Atlantic Ocean
; Atlantic Ocean (Southwest)
; Bahia Blanca Estuary
; Buenos Aires [Argentina]
; Argentina
; Atlantic Ocean
; Biomass
; Climate
; Ecosystem
; Estuaries
; Eutrophication
; Food Chain
; Phosphorus
; Phytoplankton
; Plankton
; Sewage
; Water Pollution
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Quantifying biotic feedbacks in response to environmental signals is fundamental to assess ecosystem perturbation. We analyzed the joint effects of eutrophication, derived from sewage pollution, and climate at the base of the pelagic food web in the Bahía Blanca Estuary (SW Atlantic Ocean). A two-year survey of environmental conditions and microplankton communities was conducted in two sites affected by contrasting anthropogenic eutrophication conditions. Under severe eutrophication, we found higher phytoplankton abundance consistently dominated by smaller sized, non siliceous species, while microzooplankton abundance remained lower and nutrient stoichiometry showed conspicuous deviations from the Redfield ratio. Phytoplankton growth in such conditions appeared controlled by phosphorous. In turn, microplankton biomass and phytoplankton size ratio (<20. μm:>20. μm) displayed a saturation relationship with nutrients in the highly eutrophic area, although mean phytoplankton growth was similar in both eutrophic systems. The strength of links within the estuarine network, quantified through path analysis, showed enhanced relationships under larger anthropogenic eutrophication, which fostered the climate influence on microplankton communities. Our results show conspicuous effects of severe sewage pollution on the ecological stoichiometry, i.e., N and P excess with respect to Si, altering nutrient ratios for microplankton communities. This warns on wide consequences on food web dynamics and ultimately in ecosystem assets of coastal pelagic environments. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86099
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Instituto Argentino de Oceanografía, IADO CONICET, Camino La Carrindanga km 7.5, Bahía Blanca, Argentina; GEOMAR Helmholtz Centre for Ocean Research Kiel, Marine Ecology/Food Webs, Düsternbrooker Weg 20, Kiel, Germany; Departamento de Ciencias de la Atmósfera y los Océanos, FCEN UBA, Ciudad Universitaria, Buenos Aires, Argentina; Universidad Nacional del Sur, Laboratorio de Ecología Acuática, San Juan 670, Bahía Blanca, Argentina; Universidad Tecnológica Nacional, Facultad Regional Bahía Blanca, 11 de Abril 461, Bahía Blanca, Argentina
Recommended Citation:
López Abbate M.C.,Molinero J.C.,Guinder V.A.,et al. Microplankton dynamics under heavy anthropogenic pressure. The case of the Bahía Blanca Estuary, southwestern Atlantic Ocean[J]. Marine Pollution Bulletin,2015-01-01,95(1)