Journal ArticleDOI
Variability and transport of suspended sediment, particulate and dissolved organic carbon in the tidal freshwater Hudson River
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In this article, the authors measured suspended matter, particulate organic carbon and dissolved organic carbon in the Hudson River during a three year period at stations spanning 150 km of the tidal freshwater Hudson River.Abstract:
Measurements of suspended matter, particulate organic carbon and dissolved organic carbon were made over a three year period at stations spanning 150 km of the tidal freshwater Hudson River. Suspended matter concentrations varied from year-to-year and were not related to freshwater discharge. The increase in suspended matter with depth in vertical profiles suggests that, during medium to low flow conditions, resuspension of bottom sediments was as important a source of sediment as loadings from tributaries. Particulate organic carbon showed significant variability among stations, and both autochthonous primary production and detrital organic matter are contributing to POC standing stocks. Dissolved organic carbon represented over half of the total organic carbon in the water column and showed little variation among stations.read more
Citations
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Zebra mussel invasion in a large, turbid river: phytoplankton response to increased grazing
Nina F. Caraco,Jonathan J. Cole,Peter A. Raymond,David L. Strayer,Michael L. Pace,Stuart E. G. Findlay,David T. Fischer +6 more
TL;DR: A mechanistic model is developed that reproduces the spatial and temporal dynamics of phytoplankton prior to the invasion of the zebra mussel and suggests that the fate of light- scattering inorganic particles (turbidity) is a key feature determining the impact of benthic grazers in aquatic systems.
Journal ArticleDOI
Transformation of Freshwater Ecosystems by Bivalves A case study of zebra mussels in the Hudson River
TL;DR: It is shown that bivalves are in fact dominant filterfeeders in many shallow-water ecosystems, and human activities often radically alter the density and composition of bivalve communities, in so doing inadvertently transforming ecosystem structure and function.
Journal ArticleDOI
Isotopic analysis of three food web theories in constricted and floodplain regions of a large river
TL;DR: The RPM, which emphasizes the primary role of autotrophic production in large rivers, is the most viable of the remaining two ecosystem models for the constricted-channel region of the Ohio based on stable isotope linkage between sources and consumers of organic matter in the food web.
Journal ArticleDOI
Terrestrial inputs of organic matter to coastal ecosystems : An intercomparison of chemical characteristics and bioavailability
Charles S. Hopkinson,Ishi Buffam,John E. Hobbie,Joseph J. Vallino,Michael Perdue,Bruce Eversmeyer,Fredrick G. Prahl,Joseph S. Covert,Robert E. Hodson,Mary Ann Moran,Erik M. Smith,John A. Baross,Byron C. Crump,Stuart E. G. Findlay,Kenneth H. Foreman +14 more
TL;DR: In this article, a variety of biogeochemical techniques and related to bioavailability to estuarine microbes were used to characterize dissolved and particulate organic matter (DOM and POM) collected from rivers or groundwater feeding five estuaries along the east and west coasts of the USA.
Journal ArticleDOI
Metabolism and organic carbon fluxes in the tidal freshwater Hudson River
TL;DR: In this article, rates of metabolism and major sources and sinks of organic carbon in the 148-k long, tidally influenced, freshwater Hudson River were summarized and the authors suggested that the continuum model needs to more clearly distinguish between GPP and NPP and should include the importance of autotrophic respiration by phytoplankton that are advected along a river.
References
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Journal ArticleDOI
World-Wide Delivery of River Sediment to the Oceans
John D. Milliman,Robert H. Meade +1 more
TL;DR: The authors showed that rivers with large sediment loads (annual discharges greater than about $15 \times 10^{6}$ tons) contribute about $7 −times 10 −9$ tons of suspended sediment to the ocean yearly.
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Biological oceanographic processes
TL;DR: In this paper, the authors proposed a method for the detection of biological oceanographic processes using biological oceanography processes, which they called Biological Oceanographic processes (BOP). But this method is not suitable for outdoor applications.
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Rivers: Form and Process in Alluvial Channels
TL;DR: In this article, a detailed review of alluvial river form and process is presented, focusing on the environmental catchment factors that control the development of channel equilibrium, and a detailed analysis of the channel equilibrium process is provided.
Journal ArticleDOI
Storage and remobilization of suspended sediment in the lower amazon river of Brazil
TL;DR: In the lower Amazon River, suspended sediment is stored during rising stages of the river and resuspended during falling river stages; the pattern of storage and res Suspension damps out the extreme values of high and low sediment discharge and tends to keep them near the mean value.