Thil deterioration of the plant cover of the ci ty water catchment in the upper Tiritea V,alley is causing some concern to the Palmiorston North City Council. Many areas form,'rly in forest have been reduced to scrub', tussock and turf. Although most of the catchment has a "burnt-over" appearance IIthere is no definite record of fires. The, :,Iegetation of the Tararuas has been 'descrIbed by Zo...

In proximity of shelters, grazing by sea urchins plays a fundamental role in establishing and maintaining areas dominated by encrusting corallines. Much attention has been given to the effects of urchins on algal assemblages in shallow subtidal reefs, but few studies attempted to clarify the role played by encrusting coralline algae in this system. It has been shown that encrusting corallines a...

The potential energy surfaces for the reaction between H2O and the protonated alcohols MeOH2+, EtOH2+, PriOH2+, and Bu(t)OH2+ have been explored by means of high level ab initio theoretical methods. Both nucleophilic substitution (SN2) and elimination (E2) pathways have been investigated. Front side (SNF) and the familiar back side (SNB) Walden inversion attack of the nucleophile have been foun...

The relative contributions to N leaching in turfgrass systems from over irrigation, fertilization, form, and soil texture, require characterization. In this study, water transport parameters were calibrated using an inverse simulation with a Kentucky bluegrass landscape. Subsequently those applied simulate use by tall fescue buffalograss turfgrasses numerical modeling. Using the hydraulic obtai...

Industrial development has created a serious problem by emitting waste water containing many different kinds of pollutants including heavy metals. There are several chemical and physical processes for heavy metals removal but bioremediation technology has also good prospect. As the waste water from different industries is deposited in the rivers nearby so aquatic flora are needed to be studied ...