Physico-biogeochemical controls on benthic-pelagic coupling of nutrient fluxes and recycling in a coastal upwelling system
نویسندگان
چکیده
منابع مشابه
Strong and Dynamic Benthic-Pelagic Coupling and Feedbacks in a Coastal Upwelling System (Peruvian Shelf)
Monthly time-series data (1998–2009) of bottom water oxygen, nitrate and nitrite concentrations from the outer shelf (150m water depth) in the oxygen minimum zone offshore Peru were coupled to a layered biogeochemical sediment model to investigate benthic-pelagic coupling over multi-annual time scales. The model includes the mineralization of four reactive pools of particulate organic carbon (P...
متن کاملInter-annual variability of the Pelagic-Benthic coupling in the upwelling system off central Chile
The coastal region of central Chile (36 S) is one of the most productive coastal systems, characterized by a marked seasonality in the upwelling regime, that brings subsurface waters rich in nutrient and poor in oxygen (ESSW) into the euphotic zone. This oceanographic condition depends basically on the equatorward wind strength and is modified on different time scales, with the El Niño-Southern...
متن کاملEffects of macroalgal mats on sediment nutrient release and benthic-pelagic coupling
Nutrient loading, one of the most severe human impacts on coastal bays, leads to a range of ecological effects including the decline of seagrass beds and proliferation of macroalgal mats as well as other changes in nutrient cycling, oxygen levels and habitat quality. Here, I examined the effects of the presence of macroalgal mats on fine-scale nutrient and oxygen dynamics and benthic-pelagic co...
متن کاملMass balance models of Ekman transport and nutrient fluxes in coastal upwelling zones
The nutrient cycles of coastal upwelling zones are studied with simple mass balance models of Ekman transport, longshore transport, surface productivity, and dissolved phosphorous. The models are constrained with data from the Peru, northwest Africa, and Oregon upwelling systems. The onshore-offshore mass balance model agrees with published Ekman transport, surface productivity, and nutrient da...
متن کاملPartitioning of physical and biogeochemical contributions to short-term variability of pCO2 in a coastal upwelling system: a quantitative approach
A considerable body of literature has addressed the role that coastal upwelling systems may play in global processes, especially in the ocean carbon cycle. It is often difficult to separate the effects of physical and biogeochemical processes on the partial pressure of carbon dioxide (pCO2) in coastal upwelling systems due to the tight coupling between these processes. In this work we propose a...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2002
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps235015