Articles | Volume 14, issue 13
Research article 11 Jul 2017
Research article | 11 Jul 2017
Nitrogen transformations along a shallow subterranean estuary
Mathilde Couturier et al.
No articles found.
Philippe Massicotte, Rainer M. W. Amon, David Antoine, Philippe Archambault, Sergio Balzano, Simon Bélanger, Ronald Benner, Dominique Boeuf, Annick Bricaud, Flavienne Bruyant, Gwenaëlle Chaillou, Malik Chami, Bruno Charrière, Jing Chen, Hervé Claustre, Pierre Coupel, Nicole Delsaut, David Doxaran, Jens Ehn, Cédric Fichot, Marie-Hélène Forget, Pingqing Fu, Jonathan Gagnon, Nicole Garcia, Beat Gasser, Jean-François Ghiglione, Gaby Gorsky, Michel Gosselin, Priscillia Gourvil, Yves Gratton, Pascal Guillot, Hermann J. Heipieper, Serge Heussner, Stanford B. Hooker, Yannick Huot, Christian Jeanthon, Wade Jeffrey, Fabien Joux, Kimitaka Kawamura, Bruno Lansard, Edouard Leymarie, Heike Link, Connie Lovejoy, Claudie Marec, Dominique Marie, Johannie Martin, Jacobo Martín, Guillaume Massé, Atsushi Matsuoka, Vanessa McKague, Alexandre Mignot, William L. Miller, Juan-Carlos Miquel, Alfonso Mucci, Kaori Ono, Eva Ortega-Retuerta, Christos Panagiotopoulos, Tim Papakyriakou, Marc Picheral, Louis Prieur, Patrick Raimbault, Joséphine Ras, Rick A. Reynolds, André Rochon, Jean-François Rontani, Catherine Schmechtig, Sabine Schmidt, Richard Sempéré, Yuan Shen, Guisheng Song, Dariusz Stramski, Eri Tachibana, Alexandre Thirouard, Imma Tolosa, Jean-Éric Tremblay, Mickael Vaïtilingom, Daniel Vaulot, Frédéric Vaultier, John K. Volkman, Huixiang Xie, Guangming Zheng, and Marcel Babin
Earth Syst. Sci. Data, 13, 1561–1592,Short summary
The MALINA oceanographic expedition was conducted in the Mackenzie River and the Beaufort Sea systems. The sampling was performed across seven shelf–basin transects to capture the meridional gradient between the estuary and the open ocean. The main goal of this research program was to better understand how processes such as primary production are influencing the fate of organic matter originating from the surrounding terrestrial landscape during its transition toward the Arctic Ocean.
Feng Wang, Dominique Arseneault, Étienne Boucher, Shulong Yu, Steeven Ouellet, Gwenaëlle Chaillou, Ann Delwaide, and Lily Wang
Biogeosciences, 17, 4559–4570,Short summary
Wood stain is challenging the use of the blue intensity technique for dendroclimatic reconstructions. Using stained subfossil trees from eastern Canadian lakes, we compared chemical destaining approaches with the
delta bluemathematical correction of blue intensity data. Although no chemical treatment was completely efficient, the delta blue method is unaffected by the staining problem and thus is promising for climate reconstructions based on lake subfossil material.
P. Glaz, J.-P. Gagné, P. Archambault, P. Sirois, and C. Nozais
Biogeosciences, 12, 6999–7011,Short summary
In this study, we showed that logging activities have a short-term impact (1 year after the perturbation) on water quality in boreal Eastern Canadian Shield lakes. However, this effect seems to mitigate 2 years after the perturbation. Further, the analysis of the absorbance and fluorescence data showed that while DOC concentrations did significantly increase in perturbed lakes, the DOM quality did not measurably change.
Related subject area
Biogeochemistry: Land - Sea CouplingRain-fed streams dilute inorganic nutrients but subsidise organic-matter-associated nutrients in coastal waters of the northeast Pacific OceanIdeas and perspectives: Biogeochemistry – some key foci for the futureSpatio-temporal variations in lateral and atmospheric carbon fluxes from the Danube DeltaTechnical note: Seamless gas measurements across the land–ocean aquatic continuum – corrections and evaluation of sensor data for CO2, CH4 and O2 from field deployments in contrasting environmentsEnrichment of trace metals from acid sulfate soils in sediments of the Kvarken Archipelago, eastern Gulf of Bothnia, Baltic SeaOrganic iron complexes enhance iron transport capacity along estuarine salinity gradients of Baltic estuariesParticulate organic matter controls benthic microbial N retention and N removal in contrasting estuaries of the Baltic SeaExport fluxes of dissolved inorganic carbon to the northern Indian Ocean from the Indian monsoonal riversThe ballast effect of lithogenic matter and its influences on the carbon fluxes in the Indian OceanIntegrating multimedia models to assess nitrogen losses from the Mississippi River basin to the Gulf of MexicoReconciling drainage and receiving basin signatures of the Godavari River systemImpacts of flocculation on the distribution and diagenesis of iron in boreal estuarine sedimentsSources, fluxes, and behaviors of fluorescent dissolved organic matter (FDOM) in the Nakdong River Estuary, KoreaEffects of changes in nutrient loading and composition on hypoxia dynamics and internal nutrient cycling of a stratified coastal lagoonCarbon degradation in agricultural soils flooded with seawater after managed coastal realignmentA global hotspot for dissolved organic carbon in hypermaritime watersheds of coastal British ColumbiaModelling nutrient retention in the coastal zone of an eutrophic seaPatterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrostModelling the impact of riverine DON removal by marine bacterioplankton on primary production in the Arctic OceanSeasonal response of air–water CO2 exchange along the land–ocean aquatic continuum of the northeast North American coast.Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sourcesEffects of seabird nitrogen input on biomass and carbon accumulation after 50 years of primary succession on a young volcanic island, SurtseyImpact of river discharge, upwelling and vertical mixing on the nutrient loading and productivity of the Canadian Beaufort ShelfSeasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchmentsAntarctic ice sheet fertilises the Southern OceanNutrient dynamics in tropical rivers, lagoons, and coastal ecosystems of eastern Hainan Island, South China SeaBioavailability of riverine dissolved organic matter in three Baltic Sea estuaries and the effect of catchment land useSeasonal dissolved inorganic nitrogen and phosphorus budgets for two sub-tropical estuaries in south Florida, USAExport of 134 Cs and 137 Cs in the Fukushima river systems at heavy rains by Typhoon Roke in September 2011The fate of riverine nutrients on Arctic shelvesExternal forcings, oceanographic processes and particle flux dynamics in Cap de Creus submarine canyon, NW Mediterranean SeaRadium-based estimates of cesium isotope transport and total direct ocean discharges from the Fukushima Nuclear Power Plant accidentTracing inputs of terrestrial high molecular weight dissolved organic matter within the Baltic Sea ecosystemThe role of alkalinity generation in controlling the fluxes of CO2 during exposure and inundation on tidal flatsCoupling of fog and marine microbial content in the near-shore coastal environmentSpatialized N budgets in a large agricultural Mediterranean watershed: high loading and low transferEffects of water discharge and sediment load on evolution of modern Yellow River Delta, China, over the period from 1976 to 2009Carbon isotopes and lipid biomarker investigation of sources, transport and degradation of terrestrial organic matter in the Buor-Khaya Bay, SE Laptev SeaContribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model studyMolecular and radiocarbon constraints on sources and degradation of terrestrial organic carbon along the Kolyma paleoriver transect, East Siberian SeaImpact of changes in river fluxes of silica on the global marine silicon cycle: a model comparison
Kyra A. St. Pierre, Brian P. V. Hunt, Suzanne E. Tank, Ian Giesbrecht, Maartje C. Korver, William C. Floyd, Allison A. Oliver, and Kenneth P. Lertzman
Biogeosciences, 18, 3029–3052,Short summary
Using 4 years of paired freshwater and marine water chemistry from the Central Coast of British Columbia (Canada), we show that coastal temperate rainforest streams are sources of organic nitrogen, iron, and carbon to the Pacific Ocean but not the inorganic nutrients easily used by marine phytoplankton. This distinction may have important implications for coastal food webs and highlights the need to sample all nutrients in fresh and marine waters year-round to fully understand coastal dynamics.
Thomas S. Bianchi, Madhur Anand, Chris T. Bauch, Donald E. Canfield, Luc De Meester, Katja Fennel, Peter M. Groffman, Michael L. Pace, Mak Saito, and Myrna J. Simpson
Biogeosciences, 18, 3005–3013,Short summary
Better development of interdisciplinary ties between biology, geology, and chemistry advances biogeochemistry through (1) better integration of contemporary (or rapid) evolutionary adaptation to predict changing biogeochemical cycles and (2) universal integration of data from long-term monitoring sites in terrestrial, aquatic, and human systems that span broad geographical regions for use in modeling.
Marie-Sophie Maier, Cristian R. Teodoru, and Bernhard Wehrli
Biogeosciences, 18, 1417–1437,Short summary
Based on a 2-year monitoring study, we found that the freshwater system of the Danube Delta, Romania, releases carbon dioxide and methane to the atmosphere. The amount of carbon released depends on the freshwater feature (river branches, channels and lakes), season and hydrologic condition, affecting the exchange with the wetland. Spatial upscaling should therefore consider these factors. Furthermore, the Danube Delta increases the amount of carbon reaching the Black Sea via the Danube River.
Anna Rose Canning, Peer Fietzek, Gregor Rehder, and Arne Körtzinger
Biogeosciences, 18, 1351–1373,Short summary
The paper describes a novel, fully autonomous, multi-gas flow-through set-up for multiple gases that combines established, high-quality oceanographic sensors in a small and robust system designed for use across all salinities and all types of platforms. We describe the system and its performance in all relevant detail, including the corrections which improve the accuracy of these sensors, and illustrate how simultaneous multi-gas set-ups can provide an extremely high spatiotemporal resolution.
Joonas J. Virtasalo, Peter Österholm, Aarno T. Kotilainen, and Mats E. Åström
Biogeosciences, 17, 6097–6113,Short summary
Rivers draining the acid sulphate soils of western Finland deliver large amounts of metals (e.g. Cd, Co, Cu, La, Mn, Ni, and Zn) to the coastal sea. To better understand metal enrichment in the sea floor, we analysed metal contents and grain size distribution in nine sediment cores, which increased in the 1960s and 1970s and stayed at high levels afterwards. The enrichment is visible more than 25 km out from the river mouths. Organic aggregates are suggested as the key seaward metal carriers.
Simon David Herzog, Per Persson, Kristina Kvashnina, and Emma Sofia Kritzberg
Biogeosciences, 17, 331–344,Short summary
Fe concentrations in boreal rivers are increasing strongly in several regions in Northern Europe. This study focuses on how Fe speciation and interaction with organic matter affect stability of Fe across estuarine salinity gradients. The results confirm a positive relationship between the relative contribution of organically complexed Fe and stability. Moreover, organically complexed Fe was more prevalent at high flow conditions and more dominant further upstream in a catchment.
Ines Bartl, Dana Hellemann, Christophe Rabouille, Kirstin Schulz, Petra Tallberg, Susanna Hietanen, and Maren Voss
Biogeosciences, 16, 3543–3564,Short summary
Irrespective of variable environmental settings in estuaries, the quality of organic particles is an important factor controlling microbial processes that facilitate a reduction of land-derived nitrogen loads to the open sea. Through the interplay of biogeochemical processing, geomorphology, and hydrodynamics, organic particles may function as a carrier and temporary reservoir of nitrogen, which has a major impact on the efficiency of nitrogen load reduction.
Moturi S. Krishna, Rongali Viswanadham, Mamidala H. K. Prasad, Vuravakonda R. Kumari, and Vedula V. S. S. Sarma
Biogeosciences, 16, 505–519,Short summary
An order-of-magnitude variability in DIC was found within the Indian estuaries due to significant variability in size of rivers, precipitation pattern and lithology in the catchments. Indian monsoonal estuaries annually export ∼ 10.3 Tg of DIC to the northern Indian Ocean, of which 75 % enters into the Bay of Bengal. Our results indicated that chemical weathering of carbonate and silicate minerals by soil CO2 is the major source of DIC in the Indian monsoonal rivers.
Tim Rixen, Birgit Gaye, Kay-Christian Emeis, and Venkitasubramani Ramaswamy
Biogeosciences, 16, 485–503,Short summary
Data obtained from sediment trap experiments in the Indian Ocean indicate that lithogenic matter ballast increases organic carbon flux rates on average by 45 % and by up to 62 % at trap locations in the river-influenced regions of the Indian Ocean. Such a strong lithogenic matter ballast effect implies that land use changes and the associated enhanced transport of lithogenic matter may significantly affect the CO2 uptake of the organic carbon pump in the receiving ocean areas.
Yongping Yuan, Ruoyu Wang, Ellen Cooter, Limei Ran, Prasad Daggupati, Dongmei Yang, Raghavan Srinivasan, and Anna Jalowska
Biogeosciences, 15, 7059–7076,Short summary
Elevated levels of nutrients in surface water, which originate from deposition of atmospheric N, drainage from agricultural fields, and discharges from sewage treatment plants, cause explosive algal blooms that impair water quality. The complex cycling of nutrients through the land, air, and water requires an integrated multimedia modeling system linking air, land surface, and stream processes to assess their sources, transport, and transformation in large river basins for decision making.
Muhammed Ojoshogu Usman, Frédérique Marie Sophie Anne Kirkels, Huub Michel Zwart, Sayak Basu, Camilo Ponton, Thomas Michael Blattmann, Michael Ploetze, Negar Haghipour, Cameron McIntyre, Francien Peterse, Maarten Lupker, Liviu Giosan, and Timothy Ian Eglinton
Biogeosciences, 15, 3357–3375,
Tom Jilbert, Eero Asmala, Christian Schröder, Rosa Tiihonen, Jukka-Pekka Myllykangas, Joonas J. Virtasalo, Aarno Kotilainen, Pasi Peltola, Päivi Ekholm, and Susanna Hietanen
Biogeosciences, 15, 1243–1271,Short summary
Iron is a common dissolved element in river water, recognizable by its orange-brown colour. Here we show that when rivers reach the ocean much of this iron settles to the sediments by a process known as flocculation. The iron is then used by microbes in coastal sediments, which are important hotspots in the global carbon cycle.
Shin-Ah Lee and Guebuem Kim
Biogeosciences, 15, 1115–1122,Short summary
The fluorescent dissolved organic matter (FDOM) delivered from riverine discharges significantly affects carbon and biogeochemical cycles in coastal waters. Our results show that the terrestrial concentrations of humic-like FDOM in river water were 60–80 % higher in the summer and fall, while the in situ production of protein-like FDOM was 70–80 % higher in the spring. Our results suggest that there are large seasonal changes in riverine fluxes of FDOM components to the ocean.
Yafei Zhu, Andrew McCowan, and Perran L. M. Cook
Biogeosciences, 14, 4423–4433,Short summary
We used a 3-D coupled hydrodynamic–biogeochemical water quality model to investigate the effects of changes in catchment nutrient loading and composition on the phytoplankton dynamics, development of hypoxia and internal nutrient dynamics in a stratified coastal lagoon system. The results highlighted the need to reduce both total nitrogen and total phosphorus for water quality improvement in estuarine systems.
Kamilla S. Sjøgaard, Alexander H. Treusch, and Thomas B. Valdemarsen
Biogeosciences, 14, 4375–4389,Short summary
Permanent flooding of low-lying coastal areas is a growing threat due to climate-change-related sea-level rise. To reduce coastal damage, buffer zones can be created by managed coastal realignment where existing dykes are breached and new dykes are built further inland. We studied the impacts on organic matter degradation in soils flooded with seawater by managed coastal realignment and suggest that most of the organic carbon present in coastal soils will be permanently preserved after flooding.
Allison A. Oliver, Suzanne E. Tank, Ian Giesbrecht, Maartje C. Korver, William C. Floyd, Paul Sanborn, Chuck Bulmer, and Ken P. Lertzman
Biogeosciences, 14, 3743–3762,Short summary
Rivers draining small watersheds of the outer coastal Pacific temperate rainforest export some of the highest yields of dissolved organic carbon (DOC) in the world directly to the ocean. This DOC is largely derived from soils and terrestrial plants. Rainfall, temperature, and watershed characteristics such as wetlands and lakes are important controls on DOC export. This region may be significant for carbon export and linking terrestrial carbon to marine ecosystems.
Elin Almroth-Rosell, Moa Edman, Kari Eilola, H. E. Markus Meier, and Jörgen Sahlberg
Biogeosciences, 13, 5753–5769,Short summary
Nutrients from land have been discussed to increase eutrophication in the open sea. This model study shows that the coastal zone works as an efficient filter. Water depth and residence time regulate the retention that occurs mostly in the sediment due to processes such as burial and denitrification. On shorter timescales the retention capacity might seem less effective when the land load of nutrients decreases, but with time the coastal zone can import nutrients from the open sea.
B. W. Abbott, J. B. Jones, S. E. Godsey, J. R. Larouche, and W. B. Bowden
Biogeosciences, 12, 3725–3740,Short summary
As high latitudes warm, carbon and nitrogen stored in permafrost soil will be vulnerable to erosion and transport to Arctic streams and rivers. We sampled outflow from 83 permafrost collapse features in Alaska. Permafrost collapse caused substantial increases in dissolved organic carbon and inorganic nitrogen but decreased methane concentration by 90%. Upland thermokarst may be a dominant linkage transferring carbon and nutrients from terrestrial to aquatic ecosystems as the Arctic warms.
V. Le Fouest, M. Manizza, B. Tremblay, and M. Babin
Biogeosciences, 12, 3385–3402,
G. G. Laruelle, R. Lauerwald, J. Rotschi, P. A. Raymond, J. Hartmann, and P. Regnier
Biogeosciences, 12, 1447–1458,Short summary
This study quantifies the exchange of carbon dioxide (CO2) between the atmosphere and the land-ocean aquatic continuum (LOAC) of the northeast North American coast, which consists of rivers, estuaries, and the coastal ocean. Our analysis reveals significant variations of the flux intensity both in time and space across the study area. Ice cover, snowmelt, and the intensity of the estuarine filter are identified as important control factors of the CO2 exchange along the LOAC.
O. Arnalds, H. Olafsson, and P. Dagsson-Waldhauserova
Biogeosciences, 11, 6623–6632,Short summary
Iceland is one of the largest dust sources on Earth. Based on two separate methods, we estimate dust emissions to range between 30 and 40 million tons annually. Ocean deposition ranges between 5.5 and 13.8 million tons. Calculated iron deposition in oceans around Iceland ranges between 0.56 to 1.4 million tons, which are distributed over wide areas. Iron is a limiting nutrient for primary production in these waters, and dust is likely to affect oceanic Fe levels around Iceland.
N. I. W. Leblans, B. D. Sigurdsson, P. Roefs, R. Thuys, B. Magnússon, and I. A. Janssens
Biogeosciences, 11, 6237–6250,Short summary
We studied the influence of allochthonous N inputs on primary succession and soil development of a 50-year-old volcanic island, Surtsey. Seabirds increased the ecosystem N accumulation rate inside their colony to ~47 kg ha-1 y-1, compared to 0.7 kg ha-1 y-1 outside it. A strong relationship was found between total ecosystem N stock and both total above- and belowground biomass and SOC stock, which shows how fast external N input can boost primary succession and soil formation.
J.-É. Tremblay, P. Raimbault, N. Garcia, B. Lansard, M. Babin, and J. Gagnon
Biogeosciences, 11, 4853–4868,
H. E. Reader, C. A. Stedmon, and E. S. Kritzberg
Biogeosciences, 11, 3409–3419,
R. Death, J. L. Wadham, F. Monteiro, A. M. Le Brocq, M. Tranter, A. Ridgwell, S. Dutkiewicz, and R. Raiswell
Biogeosciences, 11, 2635–2643,
R. H. Li, S. M. Liu, Y. W. Li, G. L. Zhang, J. L. Ren, and J. Zhang
Biogeosciences, 11, 481–506,
E. Asmala, R. Autio, H. Kaartokallio, L. Pitkänen, C. A. Stedmon, and D. N. Thomas
Biogeosciences, 10, 6969–6986,
C. Buzzelli, Y. Wan, P. H. Doering, and J. N. Boyer
Biogeosciences, 10, 6721–6736,
S. Nagao, M. Kanamori, S. Ochiai, S. Tomihara, K. Fukushi, and M. Yamamoto
Biogeosciences, 10, 6215–6223,
V. Le Fouest, M. Babin, and J.-É. Tremblay
Biogeosciences, 10, 3661–3677,
A. Rumín-Caparrós, A. Sanchez-Vidal, A. Calafat, M. Canals, J. Martín, P. Puig, and R. Pedrosa-Pàmies
Biogeosciences, 10, 3493–3505,
M. A. Charette, C. F. Breier, P. B. Henderson, S. M. Pike, I. I. Rypina, S. R. Jayne, and K. O. Buesseler
Biogeosciences, 10, 2159–2167,
B. Deutsch, V. Alling, C. Humborg, F. Korth, and C. M. Mörth
Biogeosciences, 9, 4465–4475,
P. A. Faber, A. J. Kessler, J. K. Bull, I. D. McKelvie, F. J. R. Meysman, and P. L. M. Cook
Biogeosciences, 9, 4087–4097,
M. E. Dueker, G. D. O'Mullan, K. C. Weathers, A. R. Juhl, and M. Uriarte
Biogeosciences, 9, 803–813,
L. Lassaletta, E. Romero, G. Billen, J. Garnier, H. García-Gómez, and J. V. Rovira
Biogeosciences, 9, 57–70,
J. Yu, Y. Fu, Y. Li, G. Han, Y. Wang, D. Zhou, W. Sun, Y. Gao, and F. X. Meixner
Biogeosciences, 8, 2427–2435,
E. S. Karlsson, A. Charkin, O. Dudarev, I. Semiletov, J. E. Vonk, L. Sánchez-García, A. Andersson, and Ö. Gustafsson
Biogeosciences, 8, 1865–1879,
C. Y. Bernard, H. H. Dürr, C. Heinze, J. Segschneider, and E. Maier-Reimer
Biogeosciences, 8, 551–564,
J. E. Vonk, L. Sánchez-García, I. Semiletov, O. Dudarev, T. Eglinton, A. Andersson, and Ö. Gustafsson
Biogeosciences, 7, 3153–3166,
C. Y. Bernard, G. G. Laruelle, C. P. Slomp, and C. Heinze
Biogeosciences, 7, 441–453,
Abarca, E., Karam, H., Hemond, H. F., and Harvey, C. F.: Transient groundwater dynamics in a coastal aquifer: the effects of tides, the lunar cycle and the beach profile, Water Resour. Res., 49, 2473–2488, https://doi.org/10.1002/wrcr.20075, 2013.
Aller, R. C.: Bioturbation and remineralization of sedimentary organic matter: effects of redox oscillation, Chem. Geol., 114, 331–345, https://doi.org/10.1016/0009-2541(94)90062-0, 1994.
Anderson, D. M., Burkholder, J. M., Cochlan, W. P., Gobler, C. J., Heil, C. A., Kudela, R. M., Parsons, M. L., Rensel, J. E. J., Townsend, D. W., Trainer, V. L., and Vargo, G. A.: Harmful algal blooms and eutrophication: examining linkages from selected coastal regions of the United States, Harmful Algae, 8, 39–53, https://doi.org/10.1016/j.hal.2008.08.017, 2008.
Anschutz, P., Jorissen, F. J., Chaillou, G., Abu-Zied, R., and Fontanier, C.: Recent turbidite deposition in the eastern Atlantic: early diagenesis and biotic recovery, J. Mar. Res., 60, 835–854, https://doi.org/10.1357/002224002321505156, 2002.
Anschutz, P., Charbonnier, C., Deborde, J., Deirmendjian, L., Poirier, D., Mouret, A., Buquet, D., and Lecroart, P.: Terrestrial groundwater and nutrient discharge along the 240-km-long Aquitanian coast, Mar. Chem., 185, 38–47, https://doi.org/10.1016/j.marchem.2016.04.002, 2016.
Baker, M. A. and Vervier, P.: Hydrological variability, organic matter supply and denitrification in the Garonne River ecosystem, Freshwater Biol., 49, 181–190, https://doi.org/10.1046/j.1365-2426.2003.01175.x, 2004.
Beck, A. J., Tsukamoto, Y., Tovar-Sanchez, A., Huerta-Diaz, M., Bokuniewicz, H. J., and Sanudo-Wilhelmy, S. A.: Importance of geochemical transformations in determining submarine groundwater discharge-derived trace metal and nutrient fluxes, Appl. Geochem., 22, 477–490, https://doi.org/10.1016/j.apgeochem.2006.10.005, 2007.
Beck, M., Riedel, T., Graue, J., Köster, J., Kowalski, N., Wu, C. S., Wegener, G., Lipsewers, Y., Freund, H., Böttcher, M. E., Brumsack, H.-J., Cypionka, H., Rullkötter, J., and Engelen, B.: Imprint of past and present environmental conditions on microbiology and biogeochemistry of coastal Quaternary sediments, Biogeosciences, 8, 55–68, https://doi.org/10.5194/bg-8-55-2011, 2011.
Beusen, A. H. W., Slomp, C. P., and Bouwman, A. F.: Global land–ocean linkage: direct inputs of nitrogen to coastal waters via submarine groundwater discharge, Environ. Res. Lett., 8, 34035, doi:1748-9326/8/3/034035, 2013.
Blanco, A. C., Nadakoa, K., and Yamamoto, T.: Planktonic and benthic microalgal community composition as indicators of terrestrial influence on a fringing reef in Ishigaki Island, Southwest Japan, Mar. Environ. Res., 66, 520–535, https://doi.org/10.1016/j.marenvres.2008.08.005, 2008.
Burnett, W., Aggarwal, P., Aureli, A., Bokuniewicz, H., Cable, J., Charette, M. A., Kontar, E., Krupa, S., Kulkarni, K., Loveless, A., Moore, W., Oberdorfer, J., Oliveira, J., Ozyurt, N., Povinec, P., Privitera, A., Rajar, R., Ramessur, R., Scholten, J., Stieglitz, T., Taniguchi, M., and Turner, J.: Quantifying submarine groundwater discharge in the coastal zone via multiple methods, Sci. Total Environ., 367, 498–543, https://doi.org/10.1016/j.scitotenv.2006.05.009, 2006.
Chaillou, G., Anschutz, P., Dubrulle, C. and Lecroart, P.: Transient states in diagenesis following the deposition of a gravity layer: dynamics of O2, Mn, Fe and N-species in experimental units, Aquat. Geochem., 13, 157–172, https://doi.org/10.1007/s10498-007-9013-0, 2007.
Chaillou, G., Touchette, M., Rémillard, A., Buffin-Bélanger, T., St-Louis, R., Hétu, B., and Tita, G.: Synthèse de l'état des connaissances sur les eaux souterraines aux Îles-de-la-Madeleine – Impacts de l'exploration et de l'exploitation des ressources naturelles sur celles-ci, Université du Québec à Rimouski, 2012.
Chaillou, G., Couturier, M., Tommi-Morin, G., and Rao, A. M.: Total alkalinity and dissolved inorganic carbon production in groundwaters discharging through a sandy beach, Procedia Earth Planet. Sci., 10, 88–99, https://doi.org/10.1016/j.proeps.2014.08.017, 2014.
Chaillou, G., Lemay-Borduas, F., and Couturier, M.: Transport and transformations of groundwater-borne carbon discharging through a sandy beach to coastal ocean, Can. Water Resour. J., 38, 809–828, https://doi.org/10.1080/07011784.2015.1111775, 2016.
Chaillou, G., Lemay-Borduas, F., Larocque, M., Couturier, M., Biehler, A., and Tommi-Morin, G.: Flow and discharge of groundwater from a snowmelt-affected sandy beach, J. Hydrol., in revision, 2017.
Couturier, M., Nozais, C., and Chaillou, G.: Microtidal subterranean estuaries as a source of fresh terrestrial dissolved organic matter to coastal ocean, Mar. Chem., 186, 46–57, https://doi.org/10.1016/j.marchem.2016.08.001, 2016.
Erler, D. V, Santos, I. R., Zhang, Y., Tait, D. R., Befus, K. M., Hidden, A., Li, L., and Eyre, B. D.: Nitrogen transformations within a tropical subterranean estuary, Mar. Chem., 164, 38–47, https://doi.org/10.1016/j.marchem.2014.05.008, 2014.
Gao, H., Schreiber, F., Collins, G., Jensen, M. M., Kostka, J. E., Lavik, G., de Beer, D., Zhou, H., and Kuypers, M. M.: Aerobic denitrification in permeable Wadden Sea sediments, ISME J., 4, 417–426, https://doi.org/10.1038/ismej.2009.127, 2009.
Gehrels, W. R.: Determining relative sea-level change from salt-marsh foraminifera and plant zones on the coast of Maine, USA, J. Coastal Res., 10, 990–1009, 1994.
Gihring, T. M., Canion, A., Riggs, A., Huettel, M., and Kostka, J. E.: Denitrification in shallow, sublittoral Gulf of Mexico permeable sediments, Limnol. Oceanogr., 55, 43–54, https://doi.org/10.4319/lo.2010.55.1.0043, 2010.
Glibert, P. M., Icarus Allen, J., Artioli, Y., Beusen, A., Bouwman, L., Harle, J., Holmes, R., and Holt, J.: Vulnerability of coastal ecosystems to changes in harmful algal bloom distribution in response to climate change: projections based on model analysis, Glob. Change Biol., 20, 3845–3858, https://doi.org/10.1111/gcb.12662, 2014.
Gonneea, M. E. and Charette, M. A.: Hydrologic controls on nutrient cycling in an unconfined coastal aquifer, Environ. Sci. Technol., 48, 14178–14185, https://doi.org/10.1021/es503313t, 2014.
Gonneea, M. E., Mulligan, A. E., and Charette, M. A.: Climate-driven sea level anomalies modulate coastal groundwater dynamics and discharge, Geophys. Res. Lett., 40, 2701–2706, https://doi.org/10.1002/grl.50192, 2013.
Hall, P. J. and Aller, R. C.: Rapid, small-Volume, flow injection analysis for CO2 and NH4+ in marine and freshwaters, Limnol. Oceanogr., 37, 1113–1119, 1992.
Hansell, D. A. and Carlson, C. A.: Biogeochemistry of marine dissolved organic matter, Academic Press, Elsevier, San Diego, Ca, USA, 2014.
Heiss, J. W. and Michael, H. A.: Saltwater-freshwater mixing dynamics in a sandy beach aquifer over tidal, srping-neap and seasonal cycles, Water Resour. Res., 50, 6747–6766, https://doi.org/10.1002/2014WR015574, 2014.
Hinzman, L. D., Bettez, N. D., Bolton, W. R., Chapin, F. S., Dyurgerov, M. B., Fastie, C. L., Griffith, B., Hollister, R. D., Hope, A., Huntington, H. P., Jensen, A. M., Jia, G. J., Jorgenson, T., Kane, D. L., Klein, D. R., Kofinas, G., Lynch, A. H., Lloyd, A. H., Mcguire, A. D., Nelson, F. E., Oechel, W. C., Osterkamp, T. E., Racine, C. H., Romanovsky, V. E., Stone, R. S., Stow, D. A., Sturm, M., Tweedie, C. E., Vourlitis, G. L., Walker, M. D., Walker, D. A., Webber, P. J., Welker, J. M., Winker, K. S., and Yoshikawa, K.: Evidence and implications of recent climate change in northern Alaska and other Arctic regions, Clim. Change, 72, 251–298, https://doi.org/10.1007/s10584-005-5352-2, 2005.
Howarth, R. W. and Marino, R.: Nitrogen as the limiting nutrient for eutrophication in coastal marine ecosystems: evolving views over three decades, Limnol. Oceanogr., 51, 364–376, https://doi.org/10.4319/lo.2006.51.1_part_2.0364, 2006.
Hulth, S., Aller, R. C., and Gilbert, F.: Coupled anoxic nitrification/manganese reduction in marine sediments, Geochim. Cosmochim. Ac., 63, 49–66, https://doi.org/10.1016/S0016-7037(98)00285-3, 1999.
Hyacinthe, C., Anschutz, P., Carbonel, P., Jouanneau, J. M., and Jorissen, F. J.: Early diagenetic processes in the muddy sediments of the bay of biscay, Mar. Geol., 177, 111–128, https://doi.org/10.1016/S0025-3227(01)00127-X, 2001.
Jackson, N., Nordstrom, K., Smith, D., and Virginia, W.: Geomorphic – biotic interactions on beach foreshores in estuaries, J. Coastal Res., 424, 414–424, doi:0749-0208, 2002.
Janicki, A., Pribble, R., Janicki, S., and Winowitch, M.: An analysis of long-term trends in Tampa Bay water quality, Tampa Bay Estuary Program, St Petersburg, FL, USA, 2001.
Johannes, R. E.: The ecological significance of the submarine discharge of groundwater, Mar. Ecol.-Prog. Ser., 3, 365–373, 1980.
Jørgensen, L., Lechtenfeld, O. J., Benner, R., Middelboe, M., and Stedmon, C. A.: Production and transformation of dissolved neutral sugars and amino acids by bacteria in seawater, Biogeosciences, 11, 5349–5363, https://doi.org/10.5194/bg-11-5349-2014, 2014.
Juneau, M.-N.: Hausse récente du niveau marin relatif aux Îles de la Madeleine, Master's thesis, Université du Québec à Rimouski, Rimouski, Canada, 2012.
Kelaher, B. and Levinton, J.: Variation in detrital enrichment causes spatio-temporal variation in soft-sediment assemblages, Mar. Ecol.-Prog. Ser., 261, 85–97, https://doi.org/10.3354/meps261085, 2003.
Kim, T., Kwon, E., Kim, I., Lee, S., and Kim, G.: Dissolved organic matter in the subterranean estuary of a volcanic island, Jeju: importance of dissolved organic nitrogen fluxes to the ocean, J. Sea Res., 78, 18–24, https://doi.org/10.1016/j.seares.2012.12.009, 2013.
Knee, K. L. and Jordan, T. E.: Spatial distribution of dissolved radon in the Choptank river and its tributaries: implications for groundwater discharge and nitrate inputs, Estuar. Coast., 36, 1237–1252, 2013.
Korom, S. F.: Natural denitrification in the saturated zone: a review, Water Resour. Res., 28, 1657–1668, https://doi.org/10.1029/92WR00252, 1992.
Kroeger, K. D. and Charette, M.: Nitrogen biogeochemistry of submarine groundwater discharge, Limnol. Oceanogr., 53, 1025–1039, 2008.
Kroeger, K. D., Cole, M. L., and Valiela, I.: Groundwater-transported dissolved organic nitrogen exports from coastal watersheds, Limnol. Oceanogr., 51, 2248–2261, https://doi.org/10.4319/lo.2006.51.5.2248, 2006.
Kroeger, K. D., Swarzenski, P. W., Greenwood, W. J., and Reich, C.: Submarine groundwater discharge to Tampa Bay: nutrient fluxes and biogeochemistry of the coastal aquifer, Mar. Chem., 104, 85–97, https://doi.org/10.1016/j.marchem.2006.10.012, 2007.
Loveless, A. M. and Oldham, C. E.: Natural attenuation of nitrogen in groundwater discharging through a sandy beach, Biogeochemistry, 98, 75–87, https://doi.org/10.1007/s10533-009-9377-x, 2010.
Madelin'Eau: Gestion des eaux souterraines aux Îles-de-la-Madeleine Un défi de développement durable Rapport final, 2004.
Madelin'Eau: Secteur sud-est de l'île de grande entrée – Rapport hydrologique, 2007.
Madelin'Eau: Secteur de grande-entrée – flanc nord alimentation en eau potable, 2009.
Madelin'Eau: Projet de réalisation d'un forage gazier vertical et conventionel d'une profondeur de 2500 m, municipalité des îles de la Madeleine – Rapport d'étape 1, expertise hydrogéologique, 2011.
Martin, J. B., Hartl, K. M., Corbett, D. R., Swarzenski, P. W., and Cable, J. E.: A multi-level pore-water sampler for permeable sediments, J. Sediment. Res., 73, 128–132, https://doi.org/10.1306/070802730128, 2003.
Masselink, G. and Short, A.: The effect on tide range on beach morphodynamics and morphology: a conceptual beach model, J. Coastal Res., 9, 785–800, 1993.
McCoy, C. and Corbett, D. R.: Review of submarine groundwater discharge (SGD) in coastal zones of the Southeast and Gulf Coast regions of the United States with management implications, J. Environ. Manage., 90, 644–51, https://doi.org/10.1016/j.jenvman.2008.03.002, 2009.
Miller, D. C. and Ullman, W. J.: Ecological consequences of ground water discharge to Delaware Bay, United States, Groundwater, 42(, 959–970, https://doi.org/10.1111/j.1745-6584.2004.tb02635.x, 2004.
Moore, W. S.: The subterranean estuary: a reaction zone of ground water and sea water, Mar. Chem., 65, 111–125, https://doi.org/10.1016/S0304-4203(99)00014-6, 1999.
Moore, W. S.: The effect of submarine groundwater discharge on the ocean., Ann. Rev. Mar. Sci., 2, 59–88, https://doi.org/10.1146/annurev-marine-120308-081019, 2010.
Null, K. A., Dimova, N. T., Knee, K. L., Esser, B. K., Swarzenski, P. W., Singleton, M. J., Stacey, M., and Paytan, A.: Submarine groundwater discharge-derived nutrient loads to San Francisco bay: implications to future ecosystem changes, Estuar. Coast., 35, 1299–1315, https://doi.org/10.1007/s12237-012-9526-7, 2012.
Postma, D.: Kinetics of nitrate reduction by detrital Fe (II)-silicates, Geochim. Cosmochim. Ac., 54, 903–908, 1990.
Postma, D., Boesen, C., Kristiansen, H., and Larsen, F.: Nitrate reduction in an unconfined sandy aquifer: water chemistry, reduction processes and geochemical modeling, Water Resour. Res., 27, 2027–2045, https://doi.org/10.1029/91WR00989, 1991.
Rao, A. M. F. and Charette, M. A.: Benthic nitrogen fixation in an eutrophic estuary affected by groundwater discharge, J. Coastal Res., 280, 477–485, https://doi.org/10.2112/JCOASTRES-D-11-00057.1, 2012.
Rao, A. M. F., McCarthy, M. J., Gardner, W. S., and Jahnke, R. A.: Respiration and denitrification in permeable continental shelf deposits on the South Atlantic Bight: N2: Ar and isotope pairing measurements in sediment column experiments, Cont. Shelf Res., 28, 602–613, 2008.
Rivett, M. O., Buss, S. R., Morgan, P., Smith, J. W. N., and Bemment, C. D.: Nitrate attenuation in groundwater: A review of biogeochemical controlling processes, Water Res., 42, 4215–4232, https://doi.org/10.1016/j.watres.2008.07.020, 2008.
Robinson, C., Li, L., and Barry, D. A.: Effect of tidal forcing on a subterranean estuary, Adv. Water Resour., 30, 851–865, https://doi.org/10.1016/j.advwatres.2006.07.006, 2007a.
Robinson, C., Xin, P., Li, L., and Barry, D. A.: Groundwater flow and salt transport in a subterranean estuary driven by intensified wave conditions, Water Resour. Res., 50, 165–181, https://doi.org/10.1002/2013WR013813, 2014.
Rocha, C., Ibanhez, J., and Leote, C.: Benthic nitrate biogeochemistry affected by tidal modulation of Submarine Groundwater Discharge (SGD) through a sandy beach face, Ria Formosa, Southwestern Iberia, Mar. Chem., 115, 43–58, https://doi.org/10.1016/j.marchem.2009.06.003, 2009.
Rocha, C., Wilson, J., Scholten, J., and Schubert, M.: Retention and fate of groundwater-borne nitrogen in a coastal bay (Kinvara Bay, Western Ireland) during summer, Biogeochemistry, 125, 275–299, https://doi.org/10.1007/s10533-015-0116-1, 2015.
Rossi, F., Incera, M., Callier, M., and Olabarria, C.: Effects of detrital non-native and native macroalgae on the nitrogen and carbon cycling in intertidal sediments, Mar. Biol., 158, 2705–2715, https://doi.org/10.1007/s00227-011-1768-6, 2011.
Sáenz, J. P., Hopmans, E. C., Rogers, D., Henderson, P. B., Charette, M. A., Schouten, S., Casciotti, K. L., Sinninghe Damsté, J. S., and Eglinton, T. I.: Distribution of anaerobic ammonia-oxidizing bacteria in a subterranean estuary, Mar. Chem., 136, 7–13, https://doi.org/10.1016/j.marchem.2012.04.004, 2012.
Santoro, A. E.: Microbial nitrogen cycling at the saltwater-freshwater interface, Hydrogeol. J., 18, 187–202, https://doi.org/10.1007/s10040-009-0526-z, 2010.
Santos, I., Burnett, W. C., Dittmar, T., Suryaputra, I. G. N., and Chanton, J.: Tidal pumping drives nutrient and dissolved organic matter dynamics in a Gulf of Mexico subterranean estuary, Geochim. Cosmochim. Ac., 73, 1325–1339, https://doi.org/10.1016/j.gca.2008.11.029, 2009.
Santos, I., Eyre, B. D., and Huettel, M.: The driving forces of porewater and groundwater flow in permeable coastal sediments: A review, Estuar. Coast. Shelf S., 98, 1–15, https://doi.org/10.1016/j.ecss.2011.10.024, 2012.
Santos, I. R., Burnett, W. C., Chanton, J., Mwashote, B., Suryaputra, I. G. N. A., and Dittmar, T.: Nutrient biogeochemistry in a Gulf of Mexico subterranean estuary and groundwater-derived fluxes to the coastal ocean, Limnol. Oceanogr., 53, 705–718, https://doi.org/10.4319/lo.2008.53.2.0705, 2008.
Santos, I. R., Bryan, K. R., Pilditch, C. A., and Tait, D. R.: Influence of porewater exchange on nutrient dynamics in two New Zealand estuarine intertidal flats, Mar. Chem., 167, 57–70, https://doi.org/10.1016/j.marchem.2014.04.006, 2014.
Sawyer, A. H.: Enhanced removal of groundwater-borne nitrate in heterogeneous aquatic sediments, Geophys. Res. Lett., 42, 403–410, https://doi.org/10.1002/2014GL062234, 2015.
Schlacher, T. A. and Connolly, R. M.: Land–ocean coupling of carbon and nitrogen fluxes on sandy beaches, Ecosystems, 12, 311–321, https://doi.org/10.1007/s10021-008-9224-2, 2009.
Schnetger, B. and Lehners, C.: Determination of nitrate plus nitrite in small volume marine water samples using vanadium(III)chloride as a reduction agent, Mar. Chem., 160, 91–98, https://doi.org/10.1016/j.marchem.2014.01.010, 2014.
Scott, D. B., Brown, K., Collins, E. S., and Medioli, F. S.: A new sea-level curve from Nova Scotia: evidence for a rapid acceleration of sea-level rise in the late mid-Holocene, Can. J. Earth Sci., 32, 2071–2080, https://doi.org/10.1139/e95-160, 1995a.
Scott, D. B., Gayes, P. T., and Collins, E. S.: Mid-holocene precedent for a future rise in sea-level along the Atlantic coast of North America, J. Coastal Res., 11, 615–622, 1995b.
Seitzinger, S. P., Sanders, R. W., and Styles, R.: Bioavailability of DON from natural and anthropogenic sources to estuarine plankton, Limnol. Oceanogr., 47, 353–366, https://doi.org/10.4319/lo.2002.47.2.0353, 2002.
Seitzinger, S. P., Harrison, J. A., Dumont, E., Beusen, A. H. W., and Bouwman, A. F.: Sources and delivery of carbon, nitrogen and phosphorus to the coastal zone: an overview of global Nutrient Export from Watersheds (NEWS) models and their application, Global Biogeochem. Cy., 19, GB4S01, https://doi.org/10.1029/2005GB002606, 2005.
Sipler, R. E. and Bronk, D. A.: Dynamics of dissolved organic nitrogen, in: Biogeochemistry of marine dissolved organic matter, edited by: Hansell, D. A. and Carlson, C. A., 127–184, Academic Press, San Diego, Ca, USA, 2014.
Slomp, C. P. and Van Cappellen, P.: Nutrient inputs to the coastal ocean through submarine groundwater discharge: controls and potential impact, J. Hydrol., 295, 64–86, 2004.
Sundby, B.: Transient state diagenesis in continental margin muds, Mar. Chem., 102, 2–12, https://doi.org/10.1016/j.marchem.2005.09.016, 2006.
Talbot, J. M., Kroeger, K. D., Rago, A., Allen, M. C., and Charette, M. A.: Nitrogen flux and speciation through the subterranean estuary of Waquoit Bay, Massachusetts, Biol. Bull., 205, 244–245, https://doi.org/10.2307/1543276, 2003.
Valiela, I., Costa, J., Foreman, K., Teal, J. M., Howes, B., and Aubrey, D.: Transport of groundwater-borne nutrients from watersheds and their effects on coastal waters, Biogeochemistry, 10, 177–197, 1990.
Voss, M., Bange, H. W., Dippner, J. W., Middelburg, J. J., Montoya, J. P., and Ward, B.: The marine nitrogen cycle: recent discoveries, uncertainties and the potential relevance of climate change, Philos. T. R. Soc., 368, https://doi.org/10.1098/rstb.2013.0121, 2013.
Weinstein, Y., Yechieli, Y., Shalem, Y., Burnett, W., Swarzenski, P. W., and Herut, B.: What is the role of fresh groundwater and recirculated seawater in conveying nutrients to the coastal ocean?, Environ. Sci. Technol., 45, 5195–5200, https://doi.org/10.1021/es104394r, 2011.
Welti, N., Gale, D., Hayes, M., Kumar, A., Gasparon, M., Gibbes, B. and Lockington, D.: Intertidal diatom communities reflect patchiness in groundwater discharge, Estuar. Coast. Shelf S., https://doi.org/10.1016/j.ecss.2015.06.006, 2015.
At the land–ocean interface, subterranean estuaries (STEs) are a critical transition pathway of nitrogen. Environmental conditions in the groundwater lead to nitrogen transformation, altering the nitrogen species and concentrations exported to the coastal ocean. This study highlights the role of a STE in processing groundwater-derived N in a shallow boreal STE, far from anthropogenic pressures. Biogeochemical transformations provide new N species from terrestrial origin to the coastal ocean.
At the land–ocean interface, subterranean estuaries (STEs) are a critical transition pathway of...