Vertical Sediment Fluxes and Wave-Induced Sediment Resuspension in a Shallow-Water Coastal Lagoon

Lund-Hansen, Lars Chresten; Petersson, Mona; Nurjaya, Wayan

doi:10.2307/1352925

Cited by 39 publications

(10 citation statements)

References 22 publications

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“…Maximum values, recorded in June, were about 7 ash-free dry g m À2 d À1 , lower than other sediment trap studies performed in lakes (Evans, 1994;Weyhenmeyer et al, 1997;No˜ges et al, 1999;Douglas and Rippey, 2000) and similar to average values observed in a shallow coastal lagoon with low current and no wave shear stresses (Lund-Hansen et al, 1999). Differences of CPOM amounts between monthly and 6-monthly deposition traps, as estimates of the semiannual CPOM mass loss along the longitudinal axis of the lake, pointed out an imbalance between the supply of organic matter and its decomposition rate.…”

Section: Discussionsupporting

confidence: 72%

Detritus accumulation and decomposition in a coastal lake (Acquatina–southern Italy)

Costantini

Rossi

Fazi

et al. 2008

Aquatic Conservation

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1. Knowledge about processes and dynamics underlying organic matter accumulation in transitional waters is crucial for the protection of these ecologically important coastal habitats. This study investigated the relationship between large particle accumulation and decomposition in a coastal lake included in a Site of Community Interest (SCI) using sediment trap and litterbag techniques. 2. Two sets of sediment traps were deployed at five sites along the longitudinal axis of the lake. One set was emptied once a month for 12 months, and the other twice a year. The contents of the monthly and the 6-monthly traps and the superficial sediments were then compared to estimate the organic matter accumulation and loss. To determine the mass loss rate of the three major allochthonous sources of detritus (the reed Phragmites australis, the cordgrass Spartina juncea, and the seagrass Posidonia oceanica), litterbags were placed near the sediment traps at three out of the five sites at the beginning of each 6-month period and retrieved monthly. 3. The amount of annual particulate organic matter (POM) deposition in the traps was 1320.2 +/- 58.5 g m(-2) y(-1) and consisted of 25% large particles (CPOM). Allochthonous litter comprised an important fraction of CPOM, and its breakdown rate changed with the plant species, site and season. Loss rate of CPOM accumulated at the lake bottom was significantly related with the mass loss rate of reed and cordgrass litter, but not with that of seagrass. 4. Due to slow litter breakdown and tidal landward advection, the lake acted as a sediment trap for allochthonous matter, especially from Posidonia. The important role of marine-derived litter in organic matter sedimentation suggests addressing conservation strategies of the lake functioning towards the selective control of allochthonous CPOM inputs, in particular at the mouth where the incoming tide brings suspended material and salinity decelerates matter flow to the sea and decomposition. This study supports the hypothesis that sedimentation and decomposition dynamics are important factors for coastal lake evolution, and shows litterbag and sediment trap techniques as simple useful investigation tools in management strategies aiming at conserving transitional waters

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Section: Discussionsupporting

confidence: 72%

Detritus accumulation and decomposition in a coastal lake (Acquatina–southern Italy)

Costantini

Rossi

Fazi

et al. 2008

Aquatic Conservation

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“…For example, the critical Shields parameter, θ c , for medium grain sand (0.2 mm) is 0.055 and for fine grain sand (0.06 mm) is 0.122. Field investigations by (Luettich et al 1990, Hawley and Lesht 1992, Lund-Hansen and Petersson 1999, Hawley 2000 have shown a relationship between bottom stress induced by free surface gravity waves and sediment resuspension. In each case, observed levels of suspended sediment concentration was correlated to bottom stress parameterized with nearbed flow measurements.…”

Section: Methodsmentioning

confidence: 99%

The effect of Lake Erie water level variations on sediment resuspension

Dusini

Foster

Shore

et al. 2009

Journal of Great Lakes Research

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“…Turbidity in shallow-waters is driven by benthic resuspension, which in turn is driven by winds and tides (Carper and Bachmann, 1984;Gabrielson and Lukatelich, 1985;Ward, 1985;Pejrup, 1986;Demers et al, 1987;Litaker et al, 1987;Berg and Newell, 1989;Cloern et al, 1989;Sanford et al, 1991;Arfi et al, 1993;Lund-Hansen et al, 1999). 2.…”

Section: A Conceptual Model Of Benthic-pelagic Couplingmentioning

confidence: 99%

Mediation of benthic–pelagic coupling by microphytobenthos: an energy- and material-based model for initiation of blooms of Aureococcus anophagefferens

et al. 2004

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Vertical Sediment Fluxes and Wave-Induced Sediment Resuspension in a Shallow-Water Coastal Lagoon

Cited by 39 publications

References 22 publications

Detritus accumulation and decomposition in a coastal lake (Acquatina–southern Italy)

Detritus accumulation and decomposition in a coastal lake (Acquatina–southern Italy)

The effect of Lake Erie water level variations on sediment resuspension

Mediation of benthic–pelagic coupling by microphytobenthos: an energy- and material-based model for initiation of blooms of Aureococcus anophagefferens

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