Growth and mineral nutrition of cattails inhabiting a thermally‐graded south carolina reservoir: II. The micronutrients 1 |
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| Authors: | D C Adriano R R Sharitz T G Ciravolo J C Luvall S A Harding |
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| Institution: | 1. Senior Research Ecologist and Associate Professor of Agronomy , Savannah River Ecology Laboratory , Drawer E, Aiken, SC, 29802;2. Associate Research Ecologist and Associate Professor of Botany , Savannah River Ecology Laboratory , Drawer E, Aiken, SC, 29802;3. Soil Technician, Savannah River Ecology Laboratory , Drawer E, Aiken, SC, 29802;4. Former Plant Technicians, Savannah River Ecology Laboratory , Drawer E, Aiken, SC, 29802;5. Savannah River Ecology Laboratory , Drawer E, Aiken, SC, 29802 |
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| Abstract: | Micronutrient uptake by two species of cattail, Typha latifolia and T. domingensis, in a thermally‐stressed South Carolina lake was determined throughout a growing season. Plants of the same age class were sampled from shoot emergence in early spring to shoot senescence in late fall. The uptake pattern varied according to the element, season, and for some elements, thermal regime. In addition, interspecific differences in uptake were observed, with higher elemental concentrations usually occurring in T. latifolia shoots. In both species, Zn and Fe tended to accumulate in the rhizomes, whereas Mn and B accumulated in shoots. Copper concentrations were equivalent in both shoots and rhizomes. Zinc was the only micronutrient to demonstrate a consistent decrease in shoot concentration in bothspecies early in the growing season followed by a gradual decline or leveling off in concentration over the rest of the season. The other micronutrients exhibited inconsistent uptake patterns. Iron was the only micronutrient to exhibit consistent enhanced effects due to temperature elevation throughout the growing season. In general, larger variabilities were observed in micronutrient uptake than in macronutrient uptake. |
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| Keywords: | nuclear technology thermal stress thermal ecology trace elements |
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