Abstract The aim of the current study was to determine monthly total soluble sugar concentration in stem and root Wichita Western walnut ( Carya illinoinensis ) varieties during a productive cycle northern Mexico. Vegetable samples were obtained using systematic sampling method, processed by means spectrophotometric assay sugars (TSS) trees. Data analysis performed 2-way ANOVA. results TSS had ...

Without periodic fire, historically open-canopied, oak-dominated upland woodlands of the central and eastern United States are shifting to closed-canopied forests with increased abundance shade-tolerant typically fire-sensitive species. Once established, these encroaching species (i.e., mesophytes) hypothesized initiate a positive feedback termed mesophication where mesophytes perpetuate condit...

The ages of fluvial deposits at the head of Chesapeake Bay, thought to be the updip, chronostratigraphic equivalents of a well-dated late Oligocene to Quatemary marine sequence in the Salisbury Embayment, are poorly known. We present data regarding a new occurrence of a palynoflora recovered from the Bryn Mawr Formation in Cecil County, Maryland. The floral assemblage for the Bryn Mawr Formatio...