What happens to terrestrial organic matter in the ocean?

Hedges, John I.; Keil, Richard G.; Benner, Ronald

doi:10.1016/s0146-6380(97)00066-1

Cited by 1,373 publications

(845 citation statements)

References 142 publications

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“…Terrestrial plants tend to be richer in carbon (C/N 20-500) in comparison to plankton (C/N ≈7) (Hedges et al, 1997) and, in consequence, C/N ratio values higher than 15 are considered to indicate organic matter of terrestrial origin.…”

Section: Geochemical and Sedimentological Analysesmentioning

confidence: 99%

Living deep-sea benthic foraminifera from the Cap de Creus Canyon (western Mediterranean): Faunal–geochemical interactions

Contreras-Rosales

Koho

Duijnstee

et al. 2012

Deep Sea Research Part I: Oceanographic Research Papers

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Section: Geochemical and Sedimentological Analysesmentioning

confidence: 99%

Living deep-sea benthic foraminifera from the Cap de Creus Canyon (western Mediterranean): Faunal–geochemical interactions

Contreras-Rosales

Koho

Duijnstee

et al. 2012

Deep Sea Research Part I: Oceanographic Research Papers

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“…They also represent an important component in the global carbon cycle [1] but are still poorly understood [2]. An operational monitoring of suspended particulate matter (SPM) concentrations in estuaries and river plumes is thus necessary to improve sediment transport and ecosystem modeling, with a final goal to prevent long-term damage to coastal waters.…”

Section: Introductionmentioning

confidence: 99%

Potential of High Spatial and Temporal Ocean Color Satellite Data to Study the Dynamics of Suspended Particles in a Micro-Tidal River Plume

et al. 2016

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Ocean color satellite sensors are powerful tools to study and monitor the dynamics of suspended particulate matter (SPM) discharged by rivers in coastal waters. In this study, we test the capabilities of Landsat-8/Operational Land Imager (OLI), AQUA&TERRA/Moderate Resolution Imaging Spectroradiometer (MODIS) and MSG-3/Spinning Enhanced Visible and Infrared Imager (SEVIRI) sensors in terms of spectral, spatial and temporal resolutions to (i) estimate the seawater reflectance signal and then SPM concentrations and (ii) monitor the dynamics of SPM in the Rhône River plume characterized by moderately turbid surface waters in a micro-tidal sea. Consistent remote-sensing reflectance (Rrs) values are retrieved in the red spectral bands of these four satellite sensors (median relative difference less than~16% in turbid waters). By applying a regional algorithm developed from in situ data, these Rrs are used to estimate SPM concentrations in the Rhône river plume. The spatial resolution of OLI provides a detailed mapping of the SPM concentration from the downstream part of the river itself to the plume offshore limits with well defined small-scale turbidity features. Despite the low temporal resolution of OLI, this should allow to better understand the transport of terrestrial particles from rivers to the coastal ocean. These details are partly lost using MODIS coarser resolutions data but SPM concentration estimations are consistent, with an accuracy of about 1 to 3 g¨m´3 in the river mouth and plume for spatial resolutions from 250 m to 1 km. The MODIS temporal resolution (2 images per day) allows to capture the daily to monthly dynamics of the river plume. However, despite its micro-tidal environment, the Rhône River plume shows significant short-term (hourly) variations, mainly controlled by wind and regional circulation, that MODIS temporal resolution failed to capture. On the contrary, the high temporal resolution of SEVIRI makes it a powerful tool to study this hourly river plume dynamics. However, its coarse resolution prevents the monitoring of SPM concentration variations in the river mouth where SPM concentration variability can reach 20 g¨m´3 inside the SEVIRI pixel. Its spatial resolution is nevertheless sufficient to reproduce the plume shape and retrieve SPM concentrations in a valid range, taking into account an underestimation of about 15%-20% based on comparisons with other sensors and in situ data. Finally, the capabilities, advantages and limits of these satellite sensors are discussed in the light of the spatial and temporal resolution improvements provided by the new and future generation

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“…The environmental process of biomass burning injects the monomer nuclei of the biopolymers into smoke as breakdown products such as acid, aldehyde, ketone, and alkyl derivatives of the methoxyphenol moieties from lignin [10,98], and as mono-, di-, and trisaccharide derivatives from cellulose and hemicellulose [99,100]. Lignin structural units carry "embedded" information about the types of plants and tissues where they were formed, i. e., gymnosperm versus angiosperm and woody versus non-woody [96,101] …”

Section: Biopolymersmentioning

confidence: 99%

“…The fate of terrestrial organic matter (TOM) in the ocean has intrigued scientists for decades [101] and, consequently, it is a major field for the application of biomarkers. Discriminating TOM in complex water and sedimentary mixtures usually encompasses identification of biochemicals and isotopic signatures characteristic of vascular plants.…”

Section: Natural Productsmentioning

confidence: 99%

Gas chromatography coupled to mass spectrometry for analyses of organic compounds and biomarkers as tracers for geological, environmental, and forensic research

Medeiros

Simoneit

2007

J of Separation Science

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ReviewGas chromatography coupled to mass spectrometry for analyses of organic compounds and biomarkers as tracers for geological, environmental, and forensic research Gas chromatography, especially when coupled with mass spectrometry, is the analytical method of choice for elucidation of biomarker compounds present in organic mixtures extracted from geological, environmental, and biological samples. This review describes the biomarker concept, i. e., the precursor natural products to the geological/environmental derivatives, and their application as multi-tracers in the geosphere and ambient environment. The mass spectrometric methods currently utilized for such analyses are reviewed with a general key to the literature, and typical examples of applications using GC -MS are also described.

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What happens to terrestrial organic matter in the ocean?

Cited by 1,373 publications

References 142 publications

Living deep-sea benthic foraminifera from the Cap de Creus Canyon (western Mediterranean): Faunal–geochemical interactions

Living deep-sea benthic foraminifera from the Cap de Creus Canyon (western Mediterranean): Faunal–geochemical interactions

Potential of High Spatial and Temporal Ocean Color Satellite Data to Study the Dynamics of Suspended Particles in a Micro-Tidal River Plume

Gas chromatography coupled to mass spectrometry for analyses of organic compounds and biomarkers as tracers for geological, environmental, and forensic research

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