Relevant bibliographies by topics / Carbon flux attenuation

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Carbon flux attenuation'

Author: Grafiati
Published: 31 May 2025
Last updated: 31 July 2025

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Journal articles on the topic "Carbon flux attenuation"

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Engel, Anja, Hannes Wagner, Frédéric A. C. Le Moigne, and Samuel T. Wilson. "Particle export fluxes to the oxygen minimum zone of the eastern tropical North Atlantic." Biogeosciences 14, no. 7 (2017): 1825–38. http://dx.doi.org/10.5194/bg-14-1825-2017.

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Abstract. In the ocean, sinking of particulate organic matter (POM) drives carbon export from the euphotic zone and supplies nutrition to mesopelagic communities, the feeding and degradation activities of which in turn lead to export flux attenuation. Oxygen (O2) minimum zones (OMZs) with suboxic water layers (< 5 µmol O2 kg−1) show a lower carbon flux attenuation compared to well-oxygenated waters (> 100 µmol O2 kg−1), supposedly due to reduced heterotrophic activity. This study focuses on sinking particle fluxes through hypoxic mesopelagic waters (< 60 µmol O2 kg−1); these represent
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Estapa, M. L., K. Buesseler, E. Boss, and G. Gerbi. "Autonomous, high-resolution observations of particle flux in the oligotrophic ocean." Biogeosciences 10, no. 8 (2013): 5517–31. http://dx.doi.org/10.5194/bg-10-5517-2013.

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Abstract. Observational gaps limit our understanding of particle flux attenuation through the upper mesopelagic because available measurements (sediment traps and radiochemical tracers) have limited temporal resolution, are labor-intensive, and require ship support. Here, we conceptually evaluate an autonomous, optical proxy-based method for high-resolution observations of particle flux. We present four continuous records of particle flux collected with autonomous profiling floats in the western Sargasso Sea and the subtropical North Pacific, as well as one shorter record of depth-resolved par
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Estapa, M. L., K. Buesseler, E. Boss, and G. Gerbi. "Autonomous, high-resolution observations of particle flux in the oligotrophic ocean." Biogeosciences Discussions 10, no. 1 (2013): 1229–65. http://dx.doi.org/10.5194/bgd-10-1229-2013.

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Abstract. Observational gaps limit our understanding of particle flux attenuation through the upper mesopelagic because available measurements (sediment traps and radiochemical tracers) have limited temporal resolution, are labor-intensive, and require ship support. Here, we conceptually evaluate an autonomous, optical proxy-based method for high-resolution observations of particle flux. We present four continuous records of particle flux collected with autonomous, profiling floats in the western Sargasso Sea and the subtropical North Pacific, as well as one shorter record of depth-resolved pa
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Boese, Sven, Martin Jung, Nuno Carvalhais, Adriaan J. Teuling, and Markus Reichstein. "Carbon–water flux coupling under progressive drought." Biogeosciences 16, no. 13 (2019): 2557–72. http://dx.doi.org/10.5194/bg-16-2557-2019.

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Abstract. Water-use efficiency (WUE), defined as the ratio of carbon assimilation over evapotranspiration (ET), is a key metric to assess ecosystem functioning in response to environmental conditions. It remains unclear which factors control this ratio during periods of extended water limitation. Here, we used dry-down events occurring at eddy-covariance flux tower sites in the FLUXNET database as natural experiments to assess if and how decreasing soil-water availability modifies WUE at ecosystem scale. WUE models were evaluated by their performance to predict ET from both the gross primary p
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Marsay, Chris M., Richard J. Sanders, Stephanie A. Henson, Katsiaryna Pabortsava, Eric P. Achterberg, and Richard S. Lampitt. "Attenuation of sinking particulate organic carbon flux through the mesopelagic ocean." Proceedings of the National Academy of Sciences 112, no. 4 (2015): 1089–94. http://dx.doi.org/10.1073/pnas.1415311112.

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The biological carbon pump, which transports particulate organic carbon (POC) from the surface to the deep ocean, plays an important role in regulating atmospheric carbon dioxide (CO2) concentrations. We know very little about geographical variability in the remineralization depth of this sinking material and less about what controls such variability. Here we present previously unpublished profiles of mesopelagic POC flux derived from neutrally buoyant sediment traps deployed in the North Atlantic, from which we calculate the remineralization length scale for each site. Combining these results
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Jónasdóttir, Sigrún Huld, André W. Visser, Katherine Richardson, and Michael R. Heath. "Seasonal copepod lipid pump promotes carbon sequestration in the deep North Atlantic." Proceedings of the National Academy of Sciences 112, no. 39 (2015): 12122–26. http://dx.doi.org/10.1073/pnas.1512110112.

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Estimates of carbon flux to the deep oceans are essential for our understanding of global carbon budgets. Sinking of detrital material (“biological pump”) is usually thought to be the main biological component of this flux. Here, we identify an additional biological mechanism, the seasonal “lipid pump,” which is highly efficient at sequestering carbon into the deep ocean. It involves the vertical transport and metabolism of carbon rich lipids by overwintering zooplankton. We show that one species, the copepod Calanus finmarchicus overwintering in the North Atlantic, sequesters an amount of car
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Fischer, Gerhard, Oscar E. Romero, Johannes Karstensen, et al. "Seasonal flux patterns and carbon transport from low-oxygen eddies at the Cape Verde Ocean Observatory: lessons learned from a time series sediment trap study (2009–2016)." Biogeosciences 18, no. 24 (2021): 6479–500. http://dx.doi.org/10.5194/bg-18-6479-2021.

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Abstract. Mesoscale eddies are abundant in the eastern tropical North Atlantic and act as oases for phytoplankton growth due to local enrichment of nutrients in otherwise oligotrophic waters. It is not clear whether these eddies can efficiently transfer organic carbon and other flux components to depth and if they are important for the marine carbon budget. Due to their transient and regionally restricted nature, measurements of eddies' contribution to bathypelagic particle flux are difficult to obtain. Rare observations of export flux associated with low-oxygen eddies have suggested efficient
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Belcher, Anna, Morten Iversen, Sarah Giering, et al. "Depth-resolved particle-associated microbial respiration in the northeast Atlantic." Biogeosciences 13, no. 17 (2016): 4927–43. http://dx.doi.org/10.5194/bg-13-4927-2016.

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Abstract. Atmospheric levels of carbon dioxide are tightly linked to the depth at which sinking particulate organic carbon (POC) is remineralised in the ocean. Rapid attenuation of downward POC flux typically occurs in the upper mesopelagic (top few hundred metres of the water column), with much slower loss rates deeper in the ocean. Currently, we lack understanding of the processes that drive POC attenuation, resulting in large uncertainties in the mesopelagic carbon budget. Attempts to balance the POC supply to the mesopelagic with respiration by zooplankton and microbes rarely succeed. Wher
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Roullier, F., L. Berline, L. Guidi, et al. "Particle size distribution and estimated carbon flux across the Arabian Sea oxygen minimum zone." Biogeosciences 11, no. 16 (2014): 4541–57. http://dx.doi.org/10.5194/bg-11-4541-2014.

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Abstract. The goal of the Arabian Sea section of the TARA oceans expedition was to study large particulate matter (LPM > 100 μm) distributions and possible impact of associated midwater biological processes on vertical carbon export through the oxygen minimum zone (OMZ) of this region. We propose that observed spatial patterns in LPM distribution resulted from the timing and location of surface phytoplankton bloom, lateral transport, microbial processes in the core of the OMZ, and enhanced biological processes mediated by bacteria and zooplankton at the lower oxycline. Indeed, satellite-der
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Suessle, Philipp, Jan Taucher, Silvan Urs Goldenberg, et al. "Particle fluxes by subtropical pelagic communities under ocean alkalinity enhancement." Biogeosciences 22, no. 1 (2025): 71–86. https://doi.org/10.5194/bg-22-71-2025.

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Abstract. Ocean alkalinity enhancement (OAE) has been proposed as a carbon dioxide removal technology (CDR), allowing for long-term storage of carbon dioxide in the ocean. By changing the carbonate speciation in seawater, OAE may potentially alter marine ecosystems with implications for the biological carbon pump. Using mesocosms in the subtropical North Atlantic, we provide first empirical insights into impacts of carbonate-based OAE on the vertical flux and attenuation of sinking particles in an oligotrophic plankton community. We enhanced total alkalinity (TA) in increments of 300 µmol kg−1
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Dissertations / Theses on the topic "Carbon flux attenuation"

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Gesson, Maéva. "Mécanismes de fragmentation de la neige marine dans la zone mésopélagique de l'océan : implication sur la séquestration de CO2 par la pompe biologique de carbone." Electronic Thesis or Diss., Brest, 2025. http://www.theses.fr/2025BRES0006.

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La pompe à carbone biologique océanique joue un rôle crucial dans le cycle du carbone sur Terre. Elle consiste en une fixation du CO₂ en surface par le phytoplancton, qui l’incorpore alors dans sa matière organique. Lorsque ces organismes meurent, ils s'agrègent en particules qui coulent. Ces particules transportent alors avec elles le carbone organique vers les profondeurs, où il peut être stocké pendant des milliers d’années. Cependant, ce flux descendant de particules s'atténue massivement lorsqu'il traverse la zone mésopélagique (100-1000m). Plusieurs mécanismes semblent impliqués, mais de
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Conference papers on the topic "Carbon flux attenuation"

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Sánchez-Murillo, Ricardo. "DOC transport and export in a dynamic tropical catchment." In I Congreso Internacional de Ciencias Exactas y Naturales. Universidad Nacional, 2019. http://dx.doi.org/10.15359/cicen.1.35.

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Dissolved organic carbon (DOC) transport and export from headwater forests into freshwaters in highly dynamic tropical catchments are still understudied. Here, we present a DOC analysis (2017) in a pristine and small (~2.6 km2) tropical catchment of Costa Rica. Storm flows governed a rapid surface and lateral allochthonous DOC transport (62.2% of the annual DOC export). Cross-correlation analysis of rainfall and stream discharge indicated that DOC transport occurred on average ~1.25 hours after the rainfall maxima, with large contributions of event water, ranging from 42.4±0.3% up to 98.2±0.3%
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Journal articles
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