Influence of climatic conditions and soil type on 99TcO4– uptake by rye grass

Echevarria, Guillaume; Morel, Jean-Louis; Florentin, Louis; Leclerc-Cessac, E.

doi:10.1016/s0265-931x(03)00128-0

Cited by 9 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is in great contrast to figures published by other workers for Tc as pertechnetate (IAEA, 1994;Echevarria et al, 1997;Denys et al, 2003;Echevarria et al, 2003). Once again, this highlights the importance of the speciation of the element in determining its environmental behaviour.…”

Section: Ryegrass 95m Tc Uptakecontrasting

confidence: 76%

Soil migration and plant uptake of technetium from a fluctuating water table

Ashworth

Shaw

2005

Journal of Environmental Radioactivity

View full text Add to dashboard Cite

Section: Ryegrass 95m Tc Uptakecontrasting

confidence: 76%

Soil migration and plant uptake of technetium from a fluctuating water table

Ashworth

Shaw

2005

Journal of Environmental Radioactivity

View full text Add to dashboard Cite

“…This could be attributed to the soil properties, the types of weed species and a better water use efficiency of individual weed families (Bolandnazar et al, 2007). Soil types influencing the abundance of plant communities are in conformity with most earlier research (Koizumi et al, 1999;Echevarria et al, 2003;Mako et al, 2008;Bestland et al, 2009;Clark et al, 2011; Figure 5 Mycorrhization of field pea roots at different soil types (gleyic phaeozem -F -soils , sandy calcaric phaeozem -S -soils and calcic chernozem -T -soils ), under current and prognosticated rainfall patterns. Means ± SD, n = 3.…”

Section: Effects Of Soil Typessupporting

confidence: 79%

“…In a lysimeter experiment with seven different crops including field pea, it was shown that the straw yield responded positively to moisture with a 21% increase for pea straw biomass under irrigation (Gan et al, 2009). The positive correlation between NPP and the LAI showed a stronger effect of the climate on the vegetative growth and confirms findings that induced drought being responsible also for the reduction in crop cover rate (Cui & Nobel, 1992;Augé, 2001;Echevarria et al, 2003;Porcel et al, 2003;Matias et al, 2011). Decrease in harvest index under progn.…”

Section: Effects Of Rainfall Patternssupporting

confidence: 53%

“…S -soils are highly sandy, with very low profile water and evaporation; F -soils have very high clay content, highly mottled subsoils, with high profile water and evaporation; while T -soils are highly silty with the highest profile water content (Table 1). Soil types and its characteristics have been demonstrated to affect several processes in agroecosystems, such as the availability and supply of water to plants (Passioura, 1991), respiration and soil temperature (Koizumi et al, 1999), plant growth, vegetation cover and yield (Mako et al, 2008;Bestland et al, 2009;Genxu et al, 2009), the transfer and interaction of mineral nutrients (Echevarria et al, 2003;Matias et al, 2011), and the physical, chemical and biochemical properties of soils (Rhoton et al, 1993;Paz-Ferreiro et al, 2011), while higher soil sand content has been shown to improve AMF colonisation (Zaller et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soil types will alter the response of arable agroecosystems to future rainfall patterns

et al. 2013

View full text Add to dashboard Cite

Climate change scenarios for central Europe predict fewer but heavier rains during the vegetation period without substantial changes in the total amount of annual rainfall. To investigate the impact of rainfall patterns derived from regionalised IPCC scenarios on agroecosystems in Austria, we conducted an experiment using 3 m 2 lysimeters where prognosticated (progn.) rainfall patterns were compared with long-term current rainfall patterns on three agriculturally important soil types (sandy calcaric phaeozem, gleyic phaeozem and calcic chernozem). Lysimeters were cultivated with field peas (Pisum sativum) according to good farming practice. Prognosticated rainfall patterns decreased crop cover, net primary production (NPP) and crop yields, but increased root production and tended to decrease mycorrhization. Soil types affected the NPP, crop density and yields, weed biomass and composition, as well as the root production with lowest values commonly found in sandy soils, while other soil types showed almost similar effects. Significant interactions between rainfall patterns and soil types were observed for the harvest index (ratio crop yield versus straw), yield per crop plant, weed density and weed community composition. Abundance of the insect pest pea moth (Cydia nigricana) tended to be higher under progn. rainfall, but was unaffected by soil types. These results show that (a) future rainfall patterns will substantially affect various agroecosystem processes and crop production in the studied region, and (b) the influence of different soil types in altering ecosystem responses to climate change should be considered when attempting to scale-up experimental results derived at the plot level to the landscape level.

show abstract

“…Fission of 235 U is an expanding global energy source and there is great pressure to begin long-term storage of increasing amounts of nuclear waste in terrestrial repositories. Predicting the behaviour of 99 Tc in terrestrial environments is part of assessments of nuclear waste repositories (Echevarria et al, 2003) and also important to the capacity to react to any accidental releases of 99 Tc from an expanding global nuclear industry. Here we analyse interspecies differences in 99 Tc transfer from soil-to-plants to aid assessments of 99 Tc behaviour in the environment.…”

Section: Introductionmentioning

confidence: 99%