Exemples d'impact radioécologique de centrales nucléaires
sur des cours d'eau français

Foulquier, L.; Garnier‐Laplace, Jacqueline; Descamps, Benoît; Lambrechts, A.; Pally, M.

doi:10.1051/hydro:1991201

Cited by 11 publications

(2 citation statements)

References 1 publication

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“…Ritchie et al, 1975;Walling and Bradley, 1990). This is confirmed for the present study area by the observation of two peaks of Cs in 1986, as a result of the Chernobyl accident, the study site is believed to have been unaffected as it is located in a catchment where very little 137 Cs from the Chernobyl accident was deposited (Foulquier et al, 1991).…”

supporting

confidence: 76%

Sedimentation in the riparian zone of an incising river

Steiger

Gurnell

Ergenzinger

et al. 2001

Earth Surf. Process. Landforms

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This paper focuses on one aspect of riparian zone change associated with channel incision. It presents information on sedimentation within the riparian zone of the River Garonne, France, derived from both historical and contemporary sources. The riparian zone investigated is morphologically complex, containing a remnant island and cut-off channel. Information drawn from historical and contemporary sources permits the reconstruction of channel planform and crossprofile change, as well as an assessment of changes in riparian zone sedimentation rates and patterns. Very significant changes are identified over the last 50 years: a change from a multiple thread to single thread channel planform; high rates of riparian zone sedimentation of the order of 0Á5 to 2Á5 cm a À1; clear spatial patterns in over-bank sedimentation, reflecting topographic and vegetational variations and flood event magnitude; and a reduction in morphological and vegetational diversity through the period, which is expected to continue as the zone is transformed into an increasingly homogeneous sediment sink.

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supporting

confidence: 76%

Sedimentation in the riparian zone of an incising river

Steiger

Gurnell

Ergenzinger

et al. 2001

Earth Surf. Process. Landforms

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“…For several years radioecological field studies have detected ll~ resulting from radioactive low level liquid effluents released into the natural environment from pressurized water reactors under normal operationing conditions (Picat et al, 1986;Foulquier et al, 1991). For instance, in the Rhone river, 11~ has been measured in fish living downstream from such nuclear facilities (Lambrechts et al, 1988).…”

Section: Introductionmentioning

confidence: 97%

Uptake from water, depuration and tissue distribution of110mAg in a freshwater fish,Cyprinus carpio L.

Baudin

Garnier‐Laplace

Lambrechts

1994

Water Air Soil Pollut

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Abstract. Radionuclide accumulation was studied on a group of 20 fish maintained at 20 • 1 ~ in spring water containing 30 Bq mL -1 of 110mAg. Because of a very significant radionuclide adsorption onto available surfaces and in order to simulate chronic exposure, the water was completely renewed three times a week. Accumulation of 110mAg was slow, with an estimated time to maximum contamination level of 180 days. The concentration factor, calculated from the ratio of the integrals of the curves representing the radionuclide concentration in filtered water and in whole fish reached a maximum value of 106 (w.w.). After 41 days exposure, 10 fish were placed in non-labelled water, renewed daily, to follow 110mAg deputation. A two-compartment exponential model was fitted to the depuration data. The corresponding radionuclide half-lives were relatively short, 0.8 (Tbl) and 30 days (Tb2), and after 6 weeks the fish retained about 30% of their initial 110mAg content. The liver and digestive tract retained most ll0mAg. Although they only represented respectively about 4 and 10% of the total body mass, these two organs accounted for 30-40% of the total radionuclide body burden.

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Using ?-emitting artificial radionuclides, released by nuclear plants, as markers of restricted movements by chub,Leuciscus cephalus, in a large river, the Lower Rh�ne

Nicolas¹,

Pont²,

Lambrechts³

1994

Environ Biol Fish

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SynopsisOn the basis that y-emitting artificial radionuclides, present in nuclear plant radioactive wastes, can be considered as 'natural' collective markers of fish living downstream from a radioactive discharge, we studied the restricted movements of chub in a reservoir on the Lower RhBne river where the Marcoule nuclear plant is located. A qualitative determination, based on the detection of specific radioelements in our samples originating from radioactive waste, and a quantitative determination of the cesium-137 concentration in the samples, were used to identify fish radioactively marked by the effluent. Individual measurements of y-radioactivity in 49 adult chub captured at two stations, each 2 km long and 6 km apart, divided the fish into two distinct sub-units: one living downstream of the discharge pipe, in which 73% were marked, and the other upstream, in which 79% were not marked. Similar results were found in two neighbouring stations when we analysed previous radioecological measurements of y-radioactivity in groups of chub. After combining all the data concerning chub, detailed information was obtained on the spatial stability of the chub population in the reservoir. Two spatially different stocks were found and each stock can be divided in two components: a sedentary component that remains in a restricted zone (its home range), and a mobile component that undertakes movements between the two zones.

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Exemples d'impact radioécologique de centrales nucléaires sur des cours d'eau français

Cited by 11 publications

References 1 publication

Sedimentation in the riparian zone of an incising river

Sedimentation in the riparian zone of an incising river

Uptake from water, depuration and tissue distribution of110mAg in a freshwater fish,Cyprinus carpio L.

Using ?-emitting artificial radionuclides, released by nuclear plants, as markers of restricted movements by chub,Leuciscus cephalus, in a large river, the Lower Rh�ne

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