Distribution of nutrients and dissolved organic matter in a eutrophic equatorial estuary: the Johor River and the East Johor Strait (2024)

Alkhatib, M., Jennerjahn, T. C., and Samiaji, J.: Biogeochemistry of the Dumai River estuary, Sumatra, Indonesia, a tropical black-water river, Limnol. Oceanogr., 52, 2410–2417, https://doi.org/10.4319/lo.2007.52.6.2410, 2007. 

Altieri, A. H., Harrison, S. B., Seemann, J., Collin, R., Diaz, R. J., and Knowlton, N.: Tropical dead zones and mass mortalities on coral reefs, P. Natl. Acad. Sci. USA, 114, 3660–3665, https://doi.org/10.1073/pnas.1621517114, 2017. 

Asmala, E., Kaartokallio, H., Carstensen, J., and Thomas, D. N.: Variation in Riverine Inputs Affect Dissolved Organic Matter Characteristics throughout the Estuarine Gradient, Front. Mar. Sci., 2, 125, https://doi.org/10.3389/fmars.2015.00125, 2016. 

Ballagh, F. E. A., Rabouille, C., Andrieux-Loyer, F., Soetaert, K., Elkalay, K., and Khalil, K.: Spatio-temporal dynamics of sedimentary phosphorus along two temperate eutrophic estuaries: A data-modelling approach, Cont. Shelf Res., 193, 104037, https://doi.org/10.1016/j.csr.2019.104037, 2020. 

Baum, A., Rixen, T., and Samiaji, J.: Relevance of peat draining rivers in central Sumatra for the riverine input of dissolved organic carbon into the ocean, Estuar. Coast. Shelf S., 73, 563–570, https://doi.org/10.1016/j.ecss.2007.02.012, 2007. 

Battin, T. J.: Dissolved organic matter and its optical properties in a blackwater tributary of the upper Orinoco River, Venezuela, Org. Geochem., 28, 561–569, 1998. 

Bernard, R. J., Mortazavi, B., and Kleinhuizen, A. A.: Dissimilatory nitrate reduction to ammonium (DNRA) seasonally dominates NO3- reduction pathways in an anthropogenically impacted sub-tropical coastal lagoon, Biogeochemistry, 125, 47–64, https://doi.org/10.1007/s10533-015-0111-6, 2015. 

Beusen, A. H. W., Bouwman, A. F., Van Beek, L. P. H., Mogollón, J. M., and Middelburg, J. J.: Global riverine N and P transport to ocean increased during the 20th century despite increased retention along the aquatic continuum, Biogeosciences, 13, 2441–2451, https://doi.org/10.5194/bg-13-2441-2016, 2016. 

Bianchi, T. S. and Morrison, E. S.: Estuarine Chemistry, in: Estuarine Ecology, edited by: Crump, B. C., Testa, J. M., and Dunton, K. H., 3rd Edn., John Wiley & Sons, Hoboken, NJ, 36–77, 2023. 

Burford, M. A., Webster, I. T., Revill, A. T., Kenyon, R. A., Whittle, M., and Curwen, G.: Controls on phytoplankton productivity in a wet–dry tropical estuary, Estuar. Coast. Shelf S., 113, 141–151, https://doi.org/10.1016/j.ecss.2012.07.017, 2012. 

Cai, P., Shi, X., Hong, Q., Li, Q., Liu, L., Guo, X., and Dai, M.: Using 224Ra/228Th disequilibrium to quantify benthic fluxes of dissolved inorganic carbon and nutrients into the Pearl River Estuary, Geochim. Cosmochim. Ac., 170, 188–203, https://doi.org/10.1016/j.gca.2015.08.015, 2015. 

Carr, N., Davis, C. E., Blackbird, S., Daniels, L. R., Preece, C., Woodward, M., and Mahaffey, C.: Seasonal and spatial variability in the optical characteristics of DOM in a temperate shelf sea, Prog. Oceanogr., 177, 101929, https://doi.org/10.1016/j.pocean.2018.02.025, 2019. 

Chai, X., Li, X., Hii, K. S., Zhang, Q., Deng, Q., Wan, L., Zheng, L., Lim, P. T., Tan, S. N., Mohd-Din, M., Song, C., Song, L., Zhou, Y., and Cao, X.: Blooms of diatom and dinoflagellate associated with nutrient imbalance driven by cycling of nitrogen and phosphorus in anaerobic sediments in Johor Strait (Malaysia), Mar. Environ. Res., 169, 105398, https://doi.org/10.1016/j.marenvres.2021.105398, 2021. 

Chen, B., Liu, H., Landry, M., Chen, M., Sun, J., Shek, L., Chen, X., and Harrison, P.: Estuarine nutrient loading affects phytoplankton growth and microzooplankton grazing at two contrasting sites in Hong Kong coastal waters, Mar. Ecol.-Prog. Ser., 379, 77–90, https://doi.org/10.3354/meps07888, 2009. 

Chen, Y., Zhou, Y., and Martin, P. The validity of optical properties as tracers of terrigenous dissolved organic carbon during extensive remineralization in coastal waters, Earth and Space Science Open Archive [preprint], https://doi.org/10.22541/essoar.167569645.50641934/v1, 2023. 

Chénard, C., Wijaya, W., Vaulot, D., Lopes Dos Santos, A., Martin, P., Kaur, A., and Lauro, F. M.: Temporal and spatial dynamics of Bacteria, Archaea and protists in equatorial coastal waters, Sci. Rep., 9, 16390, https://doi.org/10.1038/s41598-019-52648-x, 2019. 

Clark, J. B. and Mannino, A.: Preferential loss of Yukon River delta colored dissolved organic matter under nutrient replete conditions, Limnol. Oceanogr., 66, 1613–1626, https://doi.org/10.1002/lno.11706, 2021. 

Clark, J. M., Lane, S. N., Chapman, P. J., and Adamson, J. K.: Export of dissolved organic carbon from an upland peatland during storm events: Implications for flux estimates, J. Hydrol., 347, 438–447, https://doi.org/10.1016/j.jhydrol.2007.09.030, 2007. 

Coble, P. G.: Marine Optical Biogeochemistry: The Chemistry of Ocean Color, Chem. Rev., 107, 402–418, https://doi.org/10.1021/cr050350+, 2007. 

Dai, M., Yin, Z., Meng, F., Liu, Q., and Cai, W.-J.: Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis, Curr. Opin. Env. Sust., 4, 170–178, https://doi.org/10.1016/j.cosust.2012.03.003, 2012. 

Damar, A., Colijn, F., Hesse, K.-J., Adrianto, L., Yonvitner, Fahrudin, A., Kurniawan, F., Prismayanti, A. D., Rahayu, S. M., Rudianto, B. Y., and Ramli, A.: Phytoplankton biomass dynamics in tropical coastal waters of Jakarta Bay, Indonesia in the period between 2001 and 2019, J. Mar. Sci. Eng., 8, 674, https://doi.org/10.3390/jmse8090674, 2020. 

Davidson, K., Gowen, R. J., Harrison, P. J., Fleming, L. E., Hoagland, P., and Moschonas, G.: Anthropogenic nutrients and harmful algae in coastal waters, J. Environ. Manage., 146, 206–216, https://doi.org/10.1016/j.jenvman.2014.07.002, 2014. 

Dittmar, T., Hertkorn, N., Kattner, G., and Lara, R. J.: Mangroves, a major source of dissolved organic carbon to the oceans, Global Biogeochem. Cy., 20, GB1012, https://doi.org/10.1029/2005GB002570, 2006. 

Dong, L. F., Sobey, M. N., Smith, C. J., Rusmana, I., Phillips, W., Stott, A., Osborn, A. M., and Nedwell, D. B.: Dissimilatory reduction of nitrate to ammonium, not denitrification or anammox, dominates benthic nitrate reduction in tropical estuaries, Limnol. Oceanogr., 56, 279–291, https://doi.org/10.4319/lo.2011.56.1.0279, 2011. 

Drake, T. W., Barthel, M., Mbongo, C. E., Mpambi, D. M., Baumgartner, S., Botefa, C. I., Bauters, M., Kurek, M. R., Spencer, R. G. M., McKenna, A.M., Haghipour, N., Ekamba, G. L., Wabakanghanzi, J. N., Eglinton, T. I., Oost, K. V., and Six, J.: Hydrology drives export and composition of carbon in a pristine tropical river, Limnol. Oceanogr., 68, 2476–2491, https://doi.org/10.1002/lno.12436, 2023. 

Eyre, B. and Balls, P.: A Comparative Study of Nutrient Behavior along the Salinity Gradient of Tropical and Temperate Estuaries, Estuaries, 22, 313–326, https://doi.org/10.2307/1352987, 1999. 

Fichot, C. G. and Benner, R.: A novel method to estimate DOC concentrations from CDOM absorption coefficients in coastal waters, Geophys. Res. Lett., 38, L03610, https://doi.org/10.1029/2010GL046152, 2011. 

Gin, K. Y.-H., Lin, X., and Zhang, S.: Dynamics and size structure of phytoplankton in the coastal waters of Singapore, J. Plankton Res., 22, 1465–1484, https://doi.org/10.1093/plankt/22.8.1465, 2000. 

Green, S. A. and Blough, N. V.: Optical absorption and fluorescence properties of chromophoric dissolved organic matter in natural waters, Limnol. Oceanogr., 39, 1903–1916, https://doi.org/10.4319/lo.1994.39.8.1903, 1994. 

Han, H., Hwang, J., and Kim, G.: Characterizing the origins of dissolved organic carbon in coastal seawater using stable carbon isotope and light absorption characteristics, Biogeosciences, 18, 1793–1801, https://doi.org/10.5194/bg-18-1793-2021, 2021. 

Hansen, A. M., Kraus, T. E. C., Pellerin, B. A., Fleck, J. A., Downing, B. D., and Bergamaschi, B. A.: Optical properties of dissolved organic matter (DOM): Effects of biological and photolytic degradation, Limnol. Oceanogr., 61, 1015–1032, https://doi.org/10.1002/lno.10270, 2016. 

Hansen, M. C., Potapov, P. V., Moore, R., Hancher, M., Turubanova, S. A., Tyukavina, A., Thau, D., Stehman, S. V., Goetz, S. J., Loveland, T. R., Kommareddy, A., Egorov, A., Chini, L., Justice, C. O., and Townshend, J. R. G.: High-Resolution Global Maps of 21st-Century Forest Cover Change, Science, 342, 850–853, https://doi.org/10.1126/science.1244693, 2013. 

Helms, J. R., Stubbins, A., Ritchie, J. D., Minor, E. C., Kieber, D. J., and Mopper, K.: Absorption spectral slopes and slope ratios as indicators of molecular weight, source, and photobleaching of chromophoric dissolved organic matter, Limnol. Oceanogr., 53, 955–969, https://doi.org/10.4319/lo.2008.53.3.0955, 2008. 

Helms, J. R., Mao, J., Stubbins, A., Schmidt-Rohr, K., Spencer, R. G. M., Hernes, P. J., and Mopper, K.: Loss of optical and molecular indicators of terrigenous dissolved organic matter during long-term photobleaching, Aquat. Sci., 76, 353–373, https://doi.org/10.1007/s00027-014-0340-0, 2014. 

Huang, T. H., Chen, C. T. A., Tseng, H. C., Lou, J. Y., Wang, S. L., Yang, L., Kandasamy, S., Gao, X., Wang, J. T., Aldrian, E., Jacinto, G. S., Anshari, G. Z., Sompongchaiyakul, P., and Wang, B. J.: Riverine carbon fluxes to the South China Sea, J. Geophys. Res.-Biogeo., 122, 1239–1259, https://doi.org/10.1002/2016JG003701, 2017. 

Huffman, G., Bolvin, D., Braithwaite, D., Hsu, R., Joyce, R., and Xie, P.: Integrated Multi-Satellite Retrievals for GPM (IMERG), version 4.4, NASA's Precipitation Processing Center, https://gpm.nasa.gov/data/imerg (last access: January 2023), 2014. 

Jennerjahn, T. C.: Biogeochemical response of tropical coastal systems to present and past environmental change, Earth Sci. Rev., 114, 19–41, https://doi.org/10.1016/j.earscirev.2012.04.005, 2012. 

Jennerjahn, T. C. and Ittekkot, V.: Relevance of mangroves for the production and deposition of organic matter along tropical continental margins, Naturwissenschaften, 89, 23–30, https://doi.org/10.1007/s00114-001-0283-x, 2002. 

Jennerjahn, T. C., Ittekkot, V., Klöpper, S., Adi, S., Purwo Nugroho, S., Sudiana, N., Yusmal, A., Prihartanto, and Gaye-Haake, B.: Biogeochemistry of a tropical river affected by human activities in its catchment: Brantas River estuary and coastal waters of Madura Strait, Java, Indonesia, Estuar. Coast. Shelf S., 60, 503–514, https://doi.org/10.1016/j.ecss.2004.02.008, 2004. 

Jennerjahn, T. C., Knoppers, B. A., Souza, W. F. L., Brunskill, G. J., and Silva, E. I. L.: Factors controlling dissolved silica in tropical rivers, in: The Silicon Cycle: Human Perturbations and Impacts on Aquatic Systems, edited by: Ittekkot, V., Unger, D., Humborg, C., and Tac An, N., 29–51, Island Press, ISBN 9781597261159, 2006. 

Jiang, S., Müller, M., Jin, J., Wu, Y., Zhu, K., Zhang, G., Mujahid, A., Rixen, T., Muhamad, M. F., Sia, E. S. A., Jang, F. H. A., and Zhang, J.: Dissolved inorganic nitrogen in a tropical estuary in Malaysia: transport and transformation, Biogeosciences, 16, 2821–2836, https://doi.org/10.5194/bg-16-2821-2019, 2019. 

Kang, C. S. and Kanniah, K. D.: Land use and land cover change and its impact on river morphology in Johor River Basin, Malaysia, J. Hydrol. Reg. Stud., 41, 101072, https://doi.org/10.1016/j.ejrh.2022.101072, 2022. 

Kérouel, R. and Aminot, A.: Fluorometric determination of ammonia in sea and estuarine waters by direct segmented flow analysis, Mar. Chem., 57, 265–275, https://doi.org/10.1016/S0304-4203(97)00040-6, 1997. 

Kok, J. W. K. and Leong, S. C. Y.: Nutrient conditions and the occurrence of a Karenia mikimotoi (Kareniaceae) bloom within East Johor Straits, Singapore, Reg. Stud. Mar. Sci., 27, 100514, https://doi.org/10.1016/j.rsma.2019.100514, 2019. 

Kuo, N.-W., Jien, S.-H., Hong, N.-M., Chen, Y.-T., and Lee, T.-Y.: Contribution of urban runoff in Taipei metropolitan area to dissolved inorganic nitrogen export in the Danshui River, Taiwan, Environ. Sci. Pollut. R., 24, 578–590, https://doi.org/10.1007/s11356-016-7825-4, 2017. 

Kurek, M. R., Stubbins, A., Drake, T. W., Dittmar, T., Moura, J. M. S., Holmes, R. M., Osterholz, H., Six, J., Wabakanghanzi, J. N., Dinga, B., Mitsuya, M., and Spencer, R. G. M.: Organic molecular signatures of the Congo River and comparison to the Amazon, Global Biogeochem. Cy., 36, e2022GB007301, https://doi.org/10.1029/2022GB007301, 2022. 

Le Moal, M., Gascuel-Odoux, C., Ménesguen, A., Souchon, Y., Étrillard, C., Levain, A., Moatar, F., Pannard, A., Souchu, P., Lefebvre, A., and Pinay, G.: Eutrophication: A new wine in an old bottle?, Sci. Total Environ., 651, 1–11, https://doi.org/10.1016/j.scitotenv.2018.09.139, 2019. 

Lee, M.-H., Osburn, C. L., Shin, K.-H., and Hur, J.: New insight into the applicability of spectroscopic indices for dissolved organic matter (DOM) source discrimination in aquatic systems affected by biogeochemical processes, Water Res., 147, 164–176, https://doi.org/10.1016/j.watres.2018.09.048, 2018. 

Lee, C. W., Lim, J. H., Heng, P. L., Marican, N. F., Narayanan, K., Sim, E. U. H., and Bong, C. W.: Influence of elevated river flow on hypoxia occurrence, nutrient concentration and microbial dynamics in a tropical estuary, Environ. Monit. Assess., 192, 660, https://doi.org/10.1007/s10661-020-08625-3, 2020. 

Li, X., Sardans, J., Hou, L., Gao, D., Liu, M., and Peñuelas, J.: Dissimilatory Nitrate/Nitrite Reduction Processes in River Sediments Across Climatic Gradient: Influences of Biogeochemical Controls and Climatic Temperature Regime, J. Geophys. Res.-Biogeo., 124, 2305–2320, https://doi.org/10.1029/2019JG005045, 2019. 

Liang, Y. Q., Annammala, K. V., Martín, P., Yong, E. L., Mazilamani, L. S., and Najib, M. Z. M.: Assessment of Physical-Chemical Water Quality Characteristics and Heavy Metals Content of Lower Johor River, Malaysia, J. Environ. Treat. Tech., 8, 961–966, 2020. 

Lim, J. H., Wong, Y. Y., Lee, C. W., Bong, C. W., and Kudo, I.: Long-term comparison of dissolved nitrogen species in tropical estuarine and coastal water systems, Estuar. Coast. Shelf S., 222, 103–111, https://doi.org/10.1016/j.ecss.2019.04.008, 2019. 

Lønborg, C., McKinna, L. I. W., Slivkoff, M. M., and Carreira, C.: Coloured dissolved organic matter dynamics in the Great Barrier Reef, Cont. Shelf Res., 219, 104395, https://doi.org/10.1016/j.csr.2021.104395, 2021a. 

Lønborg, C., Müller, M., Butler, E. C. V., Jiang, S., Ooi, S. K., Trinh, D. H., Wong, P. Y., Ali, S. M., Cui, C., Siong, W. B., Yando, E. S., Friess, D. A., Rosentreter, J. A., Eyre, B. D., and Martin, P.: Nutrient cycling in tropical and temperate coastal waters: Is latitude making a difference?, Estuar. Coast. Shelf S., 262, 107571, https://doi.org/10.1016/j.ecss.2021.107571, 2021b. 

Lu, C.-J., Benner, R., Fichot, C. G., f*ckuda, H., Yamash*ta, Y., and Ogawa, H.: Sources and Transformations of Dissolved Lignin Phenols and Chromophoric Dissolved Organic Matter in Otsuchi Bay, Japan, Front. Mar. Sci., 3, 85, https://doi.org/10.3389/fmars.2016.00085, 2016. 

MacDonald, R. W. and McLaughlin, F. A.: The effect of storage by freezing on dissolved inorganic phosphate, nitrate and reactive silicate for samples from coastal and estuarine waters, Water Res., 16, 95–104, https://doi.org/10.1016/0043-1354(82)90058-6, 1982. 

Martin, P.: Replication data for: Distribution of nutrients and dissolved organic matter in a eutrophic equatorial estuary, the Johor River and East Johor Strait, V3, DR-NTU [code, data set], https://doi.org/10.21979/N9/XJWPHI, 2023. 

Martin, P. and Bianchi, T. S.: Organic Carbon Cycling and Transformation, in: Treatise on Estuarine and Coastal Science, 2nd Edn., edited by: Baird, D. and Elliott, M., 164–224, Academic Press, Oxford, https://doi.org/10.1016/B978-0-323-90798-9.00061-5, 2024. 

Martin, P., Cherukuru, N., Tan, A. S. Y., Sanwlani, N., Mujahid, A., and Müller, M.: Distribution and cycling of terrigenous dissolved organic carbon in peatland-draining rivers and coastal waters of Sarawak, Borneo, Biogeosciences, 15, 6847–6865, https://doi.org/10.5194/bg-15-6847-2018, 2018. 

Martin, P., Moynihan, M. A., Chen, S., Woo, O. Y., Zhou, Y., Nichols, R. S., Chang, K. Y. W., Tan, A. S. Y., Chen, Y.-H., Ren, H., and Chen, M.: Monsoon-driven biogeochemical dynamics in an equatorial shelf sea: Time-series observations in the Singapore Strait, Estuar. Coast. Shelf S., 270, 107855, https://doi.org/10.1016/j.ecss.2022.107855, 2022. 

Massicotte, P., Asmala, E., Stedmon, C., and Markager, S.: Global distribution of dissolved organic matter along the aquatic continuum: Across rivers, lakes and oceans, Sci. Total Environ., 609, 180–191, https://doi.org/10.1016/j.scitotenv.2017.07.076, 2017. 

Mohd-Din, M., Abdul-Wahab, M. F., Mohamad, S. E., Jamaluddin, H., Shahir, S., Ibrahim, Z., Hii, K. S., Tan, S. N., Leaw, C. P., Gu, H., and Lim, P. T.: Prolonged high biomass diatom blooms induced formation of hypoxic-anoxic zones in the inner part of Johor Strait, Environ. Sci. Pollut. R., 27, 42948–42959, https://doi.org/10.1007/s11356-020-10184-6, 2020. 

Moore, S., Gauci, V., Evans, C. D., and Page, S. E.: Fluvial organic carbon losses from a Bornean blackwater river, Biogeosciences, 8, 901–909, https://doi.org/10.5194/bg-8-901-2011, 2011. 

Neumann, B., Vafeidis, A. T., Zimmermann, J., and Nicholls, R. J.: Future Coastal Population Growth and Exposure to Sea-Level Rise and Coastal Flooding – A Global Assessment, PLoS ONE, 10, e0118571, https://doi.org/10.1371/journal.pone.0118571, 2015. 

Pak, H. Y., Chuah, C. J., Yong, E. L., and Snyder, S. A.: Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: A case study of the Johor River Basin, Sci. Total Environ., 780, 146661, https://doi.org/10.1016/j.scitotenv.2021.146661, 2021. 

Pratihary, A. K., Naqvi, S. W. A., Naik, H., Thorat, B. R., Narvenkar, G., Manjunatha, B. R., and Rao, V. P.: Benthic fluxes in a tropical estuary and their role in the ecosystem, Estuar. Coast. Shelf S., 85, 387–398, https://doi.org/10.1016/j.ecss.2009.08.012, 2009. 

Osburn, C. L., Kinsey, J. D., Bianchi, T. S., and Shields, M. R.: Formation of planktonic chromophoric dissolved organic matter in the ocean, Mar. Chem., 209, 1–13, https://doi.org/10.1016/j.marchem.2018.11.010, 2019. 

Raymond, P. A. and Saiers, J. E.: Event controlled DOC export from forested watersheds, Biogeochemistry, 100, 197–209, https://doi.org/10.1007/s10533-010-9416-7, 2010. 

Regnier, P., Resplandy, L., Najjar, R. G., and Ciais, P.: The land-to-ocean loops of the global carbon cycle, Nature, 603, 401–410, https://doi.org/10.1038/s41586-021-04339-9, 2022. 

Rixen, T., Baum, A., Wit, F., and Samiaji, J.: Carbon Leaching from Tropical Peat Soils and Consequences for Carbon Balances, Front. Earth Sci., 4, 74, https://doi.org/10.3389/feart.2016.00074, 2016. 

Rixen, T., Wit, F., Hutahaean, A. A., Schlüter, A., Baum, A., Klemme, A., Müller, M., Pranowo, W. S., Samiaji, J., and Warneke, T.: 4 – Carbon cycle in tropical peatlands and coastal seas, in: Science for the protection of Indonesian coastal ecosystems (SPICE), edited by: Jennerjahn, T. C., Rixen, T., Irianto, H. E., and Samiaji, J., 83–142, Elsevier, https://doi.org/10.1016/B978-0-12-815050-4.00011-0, 2022. 

Roubeix, V., Rousseau, V., and Lancelot, C.: Diatom succession and silicon removal from freshwater in estuarine mixing zones: From experiment to modelling, Estuar. Coast. Shelf S., 78, 14–26, https://doi.org/10.1016/j.ecss.2007.11.007, 2008a. 

Roubeix, V., Becquevort, S., and Lancelot, C.: Influence of bacteria and salinity on diatom biogenic silica dissolution in estuarine systems, Biogeochemistry, 88, 47–62, https://doi.org/10.1007/s10533-008-9193-8, 2008b. 

Samsudin, M. S., Azid, A., Khalit, S. I., Saudi, A. S. M., and Zaudi, M. A.: River water quality assessment using APCS-MLR and statistical process control in Johor River Basin, Malaysia, Int. J. Adv. Appl. Sci., 4, 84–97, https://doi.org/10.21833/ijaas.2017.08.013, 2017. 

Sanwlani, N., Evans, C. D., Müller, M., Cherukuru, N., and Martin, P.: Rising dissolved organic carbon concentrations in coastal waters of northwestern Borneo related to tropical peatland conversion, Sci. Adv., 8, eabi5688, https://doi.org/10.1126/sciadv.abi5688, 2022. 

Schaefer, S. C. and Hollibaugh, J. T.: Temperature Decouples Ammonium and Nitrite Oxidation in Coastal Waters, Environ. Sci. Technol., 51, 3157–3164, https://doi.org/10.1021/acs.est.6b03483, 2017. 

Siegel, H., Gerth, M., Stottmeister, I., Baum, A., and Samiaji, J.: Remote Sensing of Coastal Discharge of SE Sumatra (Indonesia), in: Remote Sensing of the Asian Seas, edited by: Barale, V. and Gade, M., Springer International Publishing, Cham, 359–376, https://doi.org/10.1007/978-3-319-94067-0_20, 2019. 

Sinha, E., Michalak, A. M., Calvin, K. V., and Lawrence, P. J.: Societal decisions about climate mitigation will have dramatic impacts on eutrophication in the 21st century, Nat. Commun., 10, 939, https://doi.org/10.1038/s41467-019-08884-w, 2019. 

Spencer, R. G. M., Stubbins, A., Hernes, P. J., Baker, A., Mopper, K., Aufdenkampe, A. K., Dyda, R. Y., Mwamba, V. L., Mangangu, A. M., Wabakanghanzi, J. N., and Six, J.: Photochemical degradation of dissolved organic matter and dissolved lignin phenols from the Congo River, J. Geophys. Res., 114, G03010, https://doi.org/10.1029/2009JG000968, 2009. 

Stedmon, C. A. and Markager, S.: Behaviour of the optical properties of coloured dissolved organic matter under conservative mixing, Estuar. Coast. Shelf S., 57, 973–979, https://doi.org/10.1016/S0272-7714(03)00003-9, 2003. 

Stedmon, C. A. and Nelson, N. B.: The Optical Properties of DOM in the Ocean, in: Biogeochemistry of Marine Dissolved Organic Matter, 2nd Edn., edited by: Carlson, C. A., Academic Press, Boston, 481–508, https://doi.org/10.1016/B978-0-12-405940-5.00010-8, 2015. 

Stibig, H.-J., Achard, F., Carboni, S., Raši, R., and Miettinen, J.: Change in tropical forest cover of Southeast Asia from 1990 to 2010, Biogeosciences, 11, 247–258, https://doi.org/10.5194/bg-11-247-2014, 2014. 

Sulu-Gambari, F., Hagens, M., Behrends, T., Seitaj, D., Meysman, F. J. R., Middelburg, J., and Slomp, C. P.: Phosphorus Cycling and Burial in Sediments of a Seasonally Hypoxic Marine Basin, Estuar. Coast., 41, 921–939, https://doi.org/10.1007/s12237-017-0324-0, 2018. 

Suratman, S., Abdul Aziz, A., Mohd Tahir, N., and Lee, L. H.: Distribution and Behaviour of Nitrogen Compounds in the Surface Water of the Sungai Terengganu Estuary, Southern Waters of South China Sea, Malaysia, Sains Malays., 47, 651–659, https://doi.org/10.17576/jsm-2018-4704-02, 2018. 

Tanaka, Y., Minggat, E., and Roseli, W.: The impact of tropical land-use change on downstream riverine and estuarine water properties and biogeochemical cycles: a review, Ecol. Process., 10, 40, https://doi.org/10.1186/s13717-021-00315-3, 2021. 

Taillardat, P., Marchand, C., Friess, D. A., Widory, D., David, F., Ohte, N., Nakamura, T., Vinh, T. V., Thanh-Nho, N., and Ziegler, A. D.: Respective contribution of urban wastewater and mangroves on nutrient dynamics in a tropical estuary during the monsoon season, Mar. Pollut. Bull., 160, 111652, https://doi.org/10.1016/j.marpolbul.2020.111652, 2020. 

Teixeira, C., Magalhães, C., Joye, S. B., and Bordalo, A. A.: Response of anaerobic ammonium oxidation to inorganic nitrogen fluctuations in temperate estuarine sediments, J. Geophys. Res.-Biogeo., 121, 1829–1839, https://doi.org/10.1002/2015JG003287, 2016. 

Traina, S. J., Novak, J., and Smeck, N. E.: An Ultraviolet Absorbance Method of Estimating the Percent Aromatic Carbon Content of Humic Acids, J. Environ. Qual., 19, 151–153, https://doi.org/10.2134/jeq1990.00472425001900010023x, 1990. 

van der Wulp, S. A., Damar, A., Ladwig, N., and Hesse, K.-J.: Numerical simulations of river discharges, nutrient flux and nutrient dispersal in Jakarta Bay, Indonesia, Mar. Pollut. Bull., 110, 675–685, https://doi.org/10.1016/j.marpolbul.2016.05.015, 2016.  

van Maren, D. S., Liew, S. C., and Hasan, G. M. J.: The role of terrestrial sediment on turbidity near Singapore's coral reefs, Cont. Shelf Res., 76, 75–88, https://doi.org/10.1016/j.csr.2013.12.001, 2014. 

Vieillard, A. M., Newell, S. E., and Thrush, S. F.: Recovering From Bias: A Call for Further Study of Underrepresented Tropical and Low-Nutrient Estuaries, J. Geophys. Res.-Biogeo., 125, e2020JG005766, https://doi.org/10.1029/2020JG005766, 2020. 

Voss, M., Wannicke, N., Deutsch, B., Bronk, D., Sipler, R., Purvaja, R., Ramesh, R., and Rixen, T.: Internal Cycling of Nitrogen and Nitrogen Transformations, in: Treatise on Estuarine and Coastal Science, edited by: Wolanski, E. and McLusky, D., Elsevier, 231–259, https://doi.org/10.1016/B978-0-12-374711-2.00508-8, 2011. 

Weishaar, J. L., Aiken, G. R., Bergamaschi, B. A., Fram, M. S., Fujii, R., and Mopper, K.: Evaluation of Specific Ultraviolet Absorbance as an Indicator of the Chemical Composition and Reactivity of Dissolved Organic Carbon, Environ. Sci. Technol., 37, 4702–4708, https://doi.org/10.1021/es030360x, 2003. 

Wijaya, W., Suhaimi, Z., Chua, C. X., Sunil, R. S., Kolundžija, S., Rohaizat, A. M. B., Azmi, N. B. Md., Hazrin-Chong, N. H., and Lauro, F. M.: Frequent pulse disturbances shape resistance and resilience in tropical marine microbial communities, ISME Commun., 3, 55, https://doi.org/10.1038/s43705-023-00260-6, 2023. 

Wit, F., Müller, D., Baum, A., Warneke, T., Pranowo, W. S., Müller, M., and Rixen, T.: The impact of disturbed peatlands on river outgassing in Southeast Asia, Nat. Commun., 6, 10155, https://doi.org/10.1038/ncomms10155, 2015. 

Xiao, H.-M., Lo, M.-H., and Yu, J.-Y.: The increased frequency of combined El Niño and positive IOD events since 1965s and its impacts on maritime continent hydroclimates, Sci. Rep., 12, 7532, https://doi.org/10.1038/s41598-022-11663-1, 2022. 

Xu, Z. X., Takeuchi, K., and Ishidaira, H.: Correlation between El Niño–Southern Oscillation (ENSO) and precipitation in South-east Asia and the Pacific region, Hydrol. Process., 18, 107–123, https://doi.org/10.1002/hyp.1315, 2004. 

Zhou, Y., Evans, C. D., Chen, Y., Chang, K. Y. W., and Martin, P.: Extensive Remineralization of Peatland-Derived Dissolved Organic Carbon and Ocean Acidification in the Sunda Shelf Sea, Southeast Asia, J. Geophys. Res.-Oceans, 126, e2021JC017292, https://doi.org/10.1029/2021JC017292, 2021. 

Zhu, G., Wang, S., Wang, W., Wang, Y., Zhou, L., Jiang, B., Op Den Camp, H. J. M., Risgaard-Petersen, N., Schwark, L., Peng, Y., Hefting, M. M., Jetten, M. S. M., and Yin, C.: Hotspots of anaerobic ammonium oxidation at land–freshwater interfaces, Nat. Geosci., 6, 103–107, https://doi.org/10.1038/ngeo1683, 2013. 

Distribution of nutrients and dissolved organic matter in a eutrophic equatorial estuary: the Johor River and the East Johor Strait (2024)
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