Distribution of Cs 134 in Andropogon Scoparius Michx. Clones in Two Native Habitats

Dodd, J.; Amburg, G. L. Van

doi:10.2307/1934049

Cited by 8 publications

(3 citation statements)

References 14 publications

(17 reference statements)

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“…When radiophos phorus techniques were compared to the soil-block technique it was 32 found they both gave comparable results, however, the P was far less laborious (Pettit and Jaynes 1971). 14 Neilson ( 1964) used C and other radioactive materials for determining root activity_ Dodd and Van Amburg (1970) It was found that groups of tillers acted as individual plants and most of the 134Cs was concentrated in the upper 5 cm of roots.…”

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confidence: 99%

Root Dynamics of a Shortgrass Ecosystem

Bartos¹,

Sims²

1974

Journal of Range Management

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OF DISSERTATION ROOT DYNAMICS OF A SHOR TGRASS ECOSYSTEMSeasonal dynamics of roots of a shortgrass system were deter mined by samples collected at two week intervals for two growing seasons (1969)(1970) with a fall and winter sampling period in between.Soil cores were taken to a depth of either 10 cm or 80 cm; the deep cores were used to determine the entire profile distributions of roots.The cores were washed free of soil particles and then the root mass was dried, weighed, ashed and reweighed. All values were expressed on an ash-free basis.Sixty percent of the root weight was in the 0-10 cm segment and 75% was found in the upper 20 cm of the soil profile. The upper 10 em increment had significant variations between dates, but the lower levels remained quite constant.Four grazing treatments (none, light, moderate, heavy) were used to determine if grazing had an effect on the root mas s. No significant differences were found among the four treatments.The usual concept of substrate storage in roots and subsequent

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confidence: 99%

Root Dynamics of a Shortgrass Ecosystem

Bartos¹,

Sims²

1974

Journal of Range Management

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“…Isotopic tracers incorporated into individual ramets are not distributed throughout all ramets within the clone (Dodd andVan Amburg 1970, Colvill andMarshall 1981). Both tracer and severing experiments demonstrate that physiological integration in the caespitose graminoid S. scoparium is restricted to individual ramet sequences consisting of three connected ramet generations (Welker et al 1991b, Williams andBriske 1991, Fig.…”

Section: Discussionmentioning

confidence: 99%

Clonal Biology of the Temperate, Caespitose, Graminoid Schizachyrium scoparium: A Synthesis with Reference to Climate Change

Welker¹,

Briske²

1992

Oikos

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“…The radionuclide 137 Cs tends to attach very strongly to many materials, especially clay minerals and organic detritus (Davis, 1963;Dodd and Van Amburg, 1970), as do many other nuclides. Radionuclides such as 3 H and 8S Kr are noteworthy exceptions in that they generally do not attach to solid objects or surfaces.…”

Section: General Conceptsmentioning

confidence: 99%