Recent sedimentary history of Lake Mendota, Wis

Bortleson, Gilbert C.; Lee, G. Fred

doi:10.1021/es60068a002

Cited by 58 publications

(29 citation statements)

References 22 publications

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“…The abundance of C org in the sediments could be related to four primary factors (Bortleson and Lee 1972): (1) production of autochthonous C org ;…”

Section: Resultsmentioning

confidence: 99%

“…Both allochthonous and autochthonous inputs may increase because of anthropogenic in¯uences because of the nutrient enrichment promoted by theadvent of domestic and agricultural drainage, which may enhance biological productivity. However, the increment in C org is the result of a simultaneous increase in inorganic and organic sedimentation because increases in inorganic sedimentation alone would result in pro®les indicating a decrease in the C org content caused by mineral dilution, which probably occurs faster than the organic production (Bortleson and Lee 1972). The observed variations of the C org content in the cores may be attributed to the combined in¯uence in production rates of carbonate C, organic C, and inorganic sedimentation from the onset of extensive agricultural and urban activities in the watershed in the Culiacan valley.…”

Section: Resultsmentioning

confidence: 99%

“…A rapid sedimentation would favor the preservation of C org because the organic substance has a shorter time in contact with the oxygen-bearing bottom water before being buried. Thus, the increase in organic matter in the sediments may be the result of anaerobiosis favoring preservation of organic molecules and a more rapid rate of sediment accumulation (Bortleson and Lee 1972).…”

Section: Resultsmentioning

confidence: 99%

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Isotopic constraints (210Pb, 228Th) on the sedimentary dynamics of contaminated sediments from a subtropical coastal lagoon (NW Mexico)

Ruíz-Fernández¹,

Hillaire‐Marcel²,

Ghaleb³

et al. 2001

Env Geol

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Six sediment push-cores were collected at a coastal lagoon system affected by urban and agriculture wastes. The sediments were analyzed for 228 Th, 230 Th, 232 Th, 210 Pb, 226 Ra, and 137 Cs. 137 Cs activities were at background level for all samples. The 210 Pb tot activities found in the area varied from 0.5 to 4.5 dpm g ±1 with 210 Pb sup levels ranging between 1.2±1.8 dpm g ±1 . Cores CHI and EPC showed¯at pro®les depleted of 210 Pb xs , indicating the absence of recent sedimentation. Core CAI shows a¯at 210 Pb xs pro®le that seems to be bioturbated. Cores ERC and BRI show chaotic pro®les with layers totally depleted in 210 Pb xs , likely caused by resuspension triggered by storm conditions. High 228 Th/ 232 Th values observed at core ERC suggest that the resuspension event occurred less than 10 years ago. The contaminated sediment of the lagoon are frequently resuspended, re-oxygenated, and therefore the contaminating trace metals will continue to be easily remobilized in the food chain.

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“…The abundance of C org in the sediments could be related to four primary factors (Bortleson and Lee 1972): (1) production of autochthonous C org ;…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Isotopic constraints (210Pb, 228Th) on the sedimentary dynamics of contaminated sediments from a subtropical coastal lagoon (NW Mexico)

Ruíz-Fernández¹,

Hillaire‐Marcel²,

Ghaleb³

et al. 2001

Env Geol

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“…Bartleson & Lee (1972) stated that total Kjeldhal nitrogen is the dominant form of nitrogen in lake sediments, about 95 to 98% of total nitrogen. In our profile, deposition of total nitrogen is associated with organic matter.…”

Section: Lake Productivity Indicatorsmentioning

confidence: 99%

Paleolimnology of a small oligotrophic lake on Wolin Island, Baltic Sea, Poland

Rybak

Zadrozna

1987

Hydrobiologia

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Paleolimnologicalstudies which included analyses of diatoms, fossil pigments and physico-chemical characteristics of bottom sediments have been used to describe the limnological history of Racze Lake. The influx of terrigenous material into. the lake have been determined on the basis of stratigraphy of elements associated with mineral content. The successively eroded soils as well as process of chemical erosion caused increase leaching of metals Mg, Fe, Al into the lake basin. However the concentration of these metals finally deposited in bottom sediments was also effected by the oxygen regime at the sediment-water interface. Both ratios, chlorophyll derivatives to total carotenoids (CD : TC) and Fe: Mn indicated hypolimnetic oxygen depletion in the middle part of the profile. The development of blue-green algal population, estimated by the ratio epiphasic to hypophasic carotenoids (EC : HC) was correlated with periods of redox conditions in the lake. The pH changes ranged from 6.5 to 7.7. The most important factors effecting pH changes were inflow of mineral matter from the watershed and structural changes in the littoral biocenosis.

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“…Comparable studies on recent sediments include those by Bortleson & Lee (1972, Cairns & Dickson (1971), Davis & Larson (1976), Duthie & Sreenivasa (1972), Hargrave (1969), Pennington (1943Pennington ( , 1973, Round (1964), Stockner (1971Stockner ( , 1972, and Stockner & Benson (1967) . The diatoms in sediments of Utah Lake have been studied by Bolland (1974), Grimes (1978) and Javakul et al .…”

Section: Introductionmentioning

confidence: 99%

Diatoms of surface sediments of Utah Lake, Utah, U.S.A.

Grimes

Rushforth

1983

Hydrobiologia

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Diatoms in fifty-seven surface sediment samples from Utah Lake were examined . Three hundred and fifteen taxa in forty-three genera were identified and quantified . Statistical analyses of the data showed that distinct geographical subregions of the lake could be delineated according to population patterns of the bottom sediment diatoms . In particular, both Provo Bay and Goshen Bay were distinct from each other and from other areas of the lake .

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Recent sedimentary history of Lake Mendota, Wis

Cited by 58 publications

References 22 publications

Isotopic constraints (210Pb, 228Th) on the sedimentary dynamics of contaminated sediments from a subtropical coastal lagoon (NW Mexico)

Isotopic constraints (210Pb, 228Th) on the sedimentary dynamics of contaminated sediments from a subtropical coastal lagoon (NW Mexico)

Paleolimnology of a small oligotrophic lake on Wolin Island, Baltic Sea, Poland

Diatoms of surface sediments of Utah Lake, Utah, U.S.A.

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