Rate of sedimentation in Lake Kinneret, Israel: spatial and temporal variations

Koren, Nir; Klein, Micha

doi:10.1002/1096-9837(200008)25:8<895::aid-esp109>3.0.co;2-9

Cited by 35 publications

(10 citation statements)

References 2 publications

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“…This remains speculative in the absence of additional observations. Although the sediment trap method is useful for determining bulk sedimentation rates (Håkanson and Jansson, 1983;Koren and Klein, 2000;Gilbert and Butler, 2004) with the limitation that the timing of deposition is not identified (Lamoureux, 2005). Here, the combined use of in situ profiling of the water column and varved sediment permits linkages to be drawn between the particle size distribution and concentration of sediment in suspension, the size distribution of bottom sediment, and the timing of deposition.…”

Section: Interpretation and Discussionmentioning

confidence: 99%

Flocculation: a key process in the sediment flux of a large, glacier‐fed lake

Hodder

2009

Earth Surf Processes Landf

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This study investigates the consequences of flocculation for sediment flux in glacier-fed Lillooet Lake, British Columbia based on density, fractal dimension, in situ profiles of sediment concentration and size distribution, and settling velocity equations presented in the literature. Sediment flux attributed to macroflocs during the late spring and summer accounts for a significant portion of sediment flux in the lake, equivalent to at least one-quarter of the average annual sediment flux. Fine sediment is reaching the lake floor faster in flocs than occurs if settling as individual grains. This flux varies both spatially and temporally over the observation period, suggesting a link between deposition via flocculation and the properties of bottom sediments. Macrofloc flux increased through June, reached a peak during July, and then declined into August. Macrofloc flux was greatest in the distal end of the first basin, approximately 10 km from the point of inflow. Relatively high excess densities (~0·1 g cm -3 at 500 μm) for flocs in situ are consistent with a composition dominated by inorganic primary particles. Microlaminations within Lillooet Lake varves have been linked by earlier workers to discharge events, and the action of turbidity currents, emanating from the Lillooet River. While turbidity currents undoubtedly occur in Lillooet Lake, these results demonstrate flocculation as an adjunct process linking discharge, lake level, macrofloc flux, bulk density and microlaminations. In situ measurements of sediment settling velocity in glacier-fed lakes are required to better constrain flux rates, and permit comparison between flocculation in lacustrine environments with existing studies of estuarine, marine and fluvial flocculation. Figure 6. (a) Lillooet Lake level (black; Station 08MG020) and discharge (grey; Station 08MG005) of Lillooet River at Pemberton (Figure 2c) between 1 June and 15 August 2004. (b) Average concentration of epilimnic particles of all diameters (black) at Station 3 (Figure 2a) and average concentration of all epilimnic particles (A); curve A plus average concentration of macroflocs in the hypolimnion (B); curve B as a percentage of curve A (C). (c) The equivalent mass flux rate of macroflocs particles (black curve) calculated using density and the intermediate settling velocity equation (curve M; Figure 1) and range maximum and minimum defined by curve I and curve A (Figure 1), respectively. (d) Daily percentage of average annual mass flux of curves in (c) derived from varve thickness (1999-2003; Figure 5c) where the cumulative percentage of average annual mass flux is shown in boxes at selected intervals. The curve in (d) is based on linear interpolation of mass flux rates from curve (c).

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Section: Interpretation and Discussionmentioning

confidence: 99%

Flocculation: a key process in the sediment flux of a large, glacier‐fed lake

Hodder

2009

Earth Surf Processes Landf

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“…We believe that this event does not represent the long‐term deposition rate. Assuming an accumulation rate of 1–4 mm/yr (Koren and Klein, ), construction may have taken place between two and 12 millennia ago.…”

Section: Discussionmentioning

confidence: 99%

A Submerged Monumental Structure in the Sea of Galilee, Israel

Paz

Reshef

Ben‐Avraham

et al. 2013

International Journal of Nautical Archaeology

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“…The trap consisted of four PVC tubes, 10 cm in diameter and 60 cm long. A bottle was screwed to the bottom of each tube to collect the settling sediment (Koren & Klein, ). Sediment traps were replaced every 21–30 days by a diver.…”

Section: Methodsmentioning

confidence: 99%

A CARD-FISH protocol for the identification and enumeration of cyanobacterial akinetes in lake sediments

Ramm

Lupu

Hadas

et al. 2012

FEMS Microbiol Ecol

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Akinetes are the dormant cells of Nostocales (cyanobacteria) that enable the organisms to survive harsh environmental conditions while resting in bottom sediments. The germination of akinetes assists the dispersal and persistence of the species. The assessment of the akinete pool in lake sediments is essential to predict the bloom formation of the Nostocales population. We present here the implementation of an improved catalysed reporter deposition (CARD)-fluorescence in situ hybridization (FISH) protocol to assist the identification and quantification of akinetes in sediment samples. Several 16S rRNA gene oligonucleotide probes were evaluated for labelling akinetes of various species of Anabaena, Aphanizomenon and Cylindrospermopsis. Akinetes of all the taxa studied were successfully labelled and could be easily detected by their bright fluorescence signal. The probes' specificity was tested with 32 strains of different taxa. All six Cylindrospermopsis raciborskii strains were labelled with a specific probe for its 16S rRNA gene. A more general probe labelled 73% of the Anabaena and Aphanizomenon strains. The counting data of field samples obtained with CARD-FISH and the regular light microscopy approach did not differ significantly, confirming the suitability of both methods. The CARD-FISH approach was found to be less time-consuming because of better visibility of akinetes.

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Rate of sedimentation in Lake Kinneret, Israel: spatial and temporal variations

Cited by 35 publications

References 2 publications

Flocculation: a key process in the sediment flux of a large, glacier‐fed lake

Flocculation: a key process in the sediment flux of a large, glacier‐fed lake

A Submerged Monumental Structure in the Sea of Galilee, Israel

A CARD-FISH protocol for the identification and enumeration of cyanobacterial akinetes in lake sediments

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