Rapid sediment accumulation and microbial mineralization in forests of the mangrove Kandelia candel in the Jiulongjiang Estuary, China

Alongi, Daniel M.; Pfitzner, J.; Trott, Lindsay; Tirendi, Frank; Dixon, Paul; Klumpp, David

doi:10.1016/j.ecss.2005.01.004

Cited by 232 publications

(118 citation statements)

References 21 publications

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“…High rates of sediment accumulation and thus accretion have been observed in various tidally influenced systems like mangrove forests, estuarines, or barrier islands (Alongi et al, 2005;Lopez-Cadavid, 2007). Reported vertical deposition rates range within the order of one to several cm yr −1 , reaching values of 20 cm yr −1 or more (Wilber et al, 1990;Yang et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

Organic matter accumulation and degradation in subsurface coastal sediments: a model-based comparison of rapid sedimentation and aquifer transport

Holstein

Wirtz²

2010

Biogeosciences

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Abstract. The redox succession in shallow marine sediments generally exhibits a predictable pattern. Pore water profiles from a back barrier tidal flat in the German Wadden Sea depart from the expected redox zoning. Instead, a sulfate minimum zone associated with a sulfate-methane-sulfate double interface and a distinct ammonium peak at 1.5 m below sea floor (mbsf) is displayed. Such evidence for significant degradation of organic matter (OM) in subsurface layers is challenging our understanding of tidal flat biogeochemistry as little is known about processes that relocate reactive OM into layers far distant from the sediment-water interface. The objectives of our model study were to identify possible mechanisms for the rapid transport of organic matter to subsurface layers that cause the reversed redox succession and to constrain several important biogeochemical control parameters. We compared two scenarios for OM transfer: rapid sedimentation and burial of OM as well as lateral advection of suspended POM. Using a diagenetic model, uncertain process parameters, in particular those connected to OM degradation and (vertical or lateral) transport, are systematically calibrated using field data.We found that both scenarios, advection and sedimentation, had solutions consistent with the observed pore water profiles. For this specific site, however, advective transport of particulate material had to be rejected since the reconstructed boundary conditions were rather improbable. In the alternative deposition set-up, model simulations suggested the deposition of the source OM about 60 yrs before cores Correspondence to: J. M. Holstein (j.holstein@icbm.de) were taken. A mean sedimentation rate of approximately 2 cmyr −1 indicates substantial changes in near coast tidal flat morphology, since sea level rise is at a much lower pace. High sedimentation rates most probably reflect the progradation of flats within the study area. These or similar morphodynamic features also occur in other coastal areas so that inverted redox succession by horizontal or vertical transport may be more common than previously thought. Consequently, regional values for OM remineralization rates may be higher than predicted from surface biogeochemistry.

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Section: Discussionmentioning

confidence: 99%

Organic matter accumulation and degradation in subsurface coastal sediments: a model-based comparison of rapid sedimentation and aquifer transport

Holstein

Wirtz²

2010

Biogeosciences

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“…Despite brackish to marine salinities, methane fluxes comparable to those measured in freshwater wetlands have been reported for coastal mangrove-dominated lagoon systems in several places around the world, including Florida (Barber P.-C. Chuang et al: Methane and sulfate dynamics et al., 1988), Puerto Rico (Sotomayor et al, 1994), India (Biswas et al, 2004(Biswas et al, , 2007Ramesh, 2000, 2001;Ramesh et al, 1997Ramesh et al, , 2007Verma et al, 1999), Tanzania (Kristensen et al, 2008), Thailand (Lekphet et al, 2005), China (Alongi et al, 2005), the Andaman Islands (Linto et al, 2014) and Australia (Call et al, 2015). The anaerobic and organic-rich sediments found in these systems provide a suitable environment for methanogenesis, yet the extensive supply of sulfate from seawater should favor sulfate reducers over methanogens in the shallow sections of the sediments (Kristensen et al, 2008;Lee et al, 2008).…”

Section: Introductionmentioning

confidence: 83%

Methane and sulfate dynamics in sediments from mangrove-dominated tropical coastal lagoons, Yucatán, Mexico

et al. 2016

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Abstract. Porewater profiles in sediment cores from mangrove-dominated coastal lagoons (Celestún and Chelem) on the Yucatán Peninsula, Mexico, reveal the widespread coexistence of dissolved methane and sulfate. This observation is interesting since dissolved methane in porewaters is typically oxidized anaerobically by sulfate. To explain the observations we used a numerical transport-reaction model that was constrained by the field observations. The model suggests that methane in the upper sediments is produced in the sulfate reduction zone at rates ranging between 0.012 and 31 mmol m −2 d −1 , concurrent with sulfate reduction rates between 1.1 and 24 mmol SO 2− 4 m −2 d −1 . These processes are supported by high organic matter content in the sediment and the use of non-competitive substrates by methanogenic microorganisms. Indeed sediment slurry incubation experiments show that non-competitive substrates such as trimethylamine (TMA) and methanol can be utilized for microbial methanogenesis at the study sites. The model also indicates that a significant fraction of methane is transported to the sulfate reduction zone from deeper zones within the sedimentary column by rising bubbles and gas dissolution. The shallow depths of methane production and the fast rising methane gas bubbles reduce the likelihood for oxidation, thereby allowing a large fraction of the methane formed in the sediments to escape to the overlying water column.

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“…Sedimen Tambak Pendugaan tingkat konsumsi oksigen sedimen tambak dilakukan berdasarkan metode Boyd (1995), Alongi et al (2005) dan Almadi (2006) dengan menggunakan 3 buah alat bantu chamber/bentik jar yakni alat yang terbuat dari kaca volume 1 L. Sebanyak ± 200 gram sampel sedimen dasar tambak diambil dan dimasukkan ke dalam jar tersebut, sedangkan chamber/jar yang lain tanpa sedimen, kemudian keseluruhan chamber /bentik jar diinkubasikan selama 1 jam dalam wadah yang menggunakan air tambak. Oksigen terlarut diukur dengan alat pengukur O 2 (TPS TM Model WP-82 DO meters).…”

Section: Pengukuran Konsumsi Oksigenunclassified

DOMINANT FACTORS AFFECTING SEDIMENT OXYGEN CONSUMPTION LEVEL IN INTENSIVE WHITE SHRIMP (Litopenaeus vannamei) POND

Suwoyo

Nirmala

Djokosetiyanto

et al. 2016

J. Ilmu dan Teknologi Kelautan Tropis

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Sediment oxygen consumption level is an indicator of mineralization procces intensity and indicator ofKeywords: sediment oxygen consumption, sediment quality, pond, Litopenaeus vannamei ABSTRAK Tingkat konsumsi oksigen sedimen merupakan indikator tingkat intensitas proses mineralisasi dan petunjuk adanya kegiatan mikroorganisme di dalam substrat serta gambaran kebutuhan oksigen yang dapat diketahui melalui konsumsi atau proses penggunaan oksigen terlarut di dalam tambak atau badan air. Tujuan penelitian adalah untuk menentukan faktor-faktor yang dominan berpengaruh terhadap tingkat konsumsi oksigen sedimen dasar tambak. Penelitian dilaksanakan di Instalasi Tambak Percobaan, Balai Penelitian dan Pengembangan Budidaya Air Payau (BPPBAP), Desa Punaga, Kabupaten Takalar, Sulawesi Selatan, menggunakan 2 petak tambak intensif dengan dasar tanah masing-masing berukuran 4000 m 2 dengan padat tebar 50 ekor/m 2 . Lama pemeliharaan kurang lebih 4 bulan. Kegiatan pengelolaan tambak dilakukan sesuai dengan prosedur operasional baku. Kehomogenan antara satuan percobaan didekati dengan penyeragaman pengelolaan meliputi persiapan tambak, pengelolaan benih udang, pengelolaan pakan serta pengelolaan air. Variabel kualitas sedimen yang diukur meliputi profil potensial redoks, pH, bahan organik total, tekstur, konsumsi oksigen sedimen, total bakteri, dan aspek produksi. Hasil analisis regresi menunjukkan bahwa faktor yang dominan berperan dalam menentukan tingkat konsumsi oksigen sedimen yakni bahan organik, total bakteri, dan potensial redoks. Model untuk memprediksi konsumsi oksigen sedimen dalam tambak udang vaname digambarkan dalam persamaan regresi Y= 0,0000496 + 0,00025 bahan organik + 0,00037 total bakteri -0,00000948 potensial redok dengan nilai R 2 = 0,847.

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Rapid sediment accumulation and microbial mineralization in forests of the mangrove Kandelia candel in the Jiulongjiang Estuary, China

Cited by 232 publications

References 21 publications

Organic matter accumulation and degradation in subsurface coastal sediments: a model-based comparison of rapid sedimentation and aquifer transport

Organic matter accumulation and degradation in subsurface coastal sediments: a model-based comparison of rapid sedimentation and aquifer transport

Methane and sulfate dynamics in sediments from mangrove-dominated tropical coastal lagoons, Yucatán, Mexico

DOMINANT FACTORS AFFECTING SEDIMENT OXYGEN CONSUMPTION LEVEL IN INTENSIVE WHITE SHRIMP (Litopenaeus vannamei) POND

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