Invasive riparian plants are a significant threat to riverine environments and are thought to alter the structure and function of stream ecosystems. Salix spp. are a genus of highly invasive northern hemisphere trees and shrubs that have invaded substantial areas of southern hemisphere riparian...

Florida springs are relatively unique, stable systems that have experienced increasing and synergistic threats from reductions in water flow, nutrient additions, and invasions of exotic species. The purpose of this study was to evaluate the effects of the egesta of one common exotic loricariid...

Woody nitrogen (N) fixers are known to fix atmospheric N at very high rates. However, N leached from woody N fixers is rarely accounted for in catchment nutrient budgets. We conducted a scoping study to determine the potential impact of the invasive N fixer gorse (Ulex europaeus) on water quality...

Purpose: Effective vermicomposting of Salvinia natans is a good alternative for protecting wetlands damaged by the weed due to the vast potential for use of the product vermicompost in agriculture, but the presence of toxic metals in the weeds may deter the usage. Methods: Research was carried out...

Surface and ground water runoff is controlled by impermeable substrates exposed by mining at two abandoned historic placer gold mines. The arid climate at these sites ensures that much of the mine water evaporates on these impermeable substrates to leave saline residues that include halite and...

The Sheyenne National Grassland (SNG) is a native tall grass and mixed grass prairie located in southeastern North Dakota. Approximately half of the SNG has been invaded by leafy spurge (Euphorbia esula L.) and control methods have been limited. Many herbicides cannot be utilized at the SNG due to...

Alkali and alkaline earth metallic (AAEM) species water leaching and Cu(II) sorption by biochar prepared from two invasive plants, Spartina alterniflora (SA) and water hyacinth (WH), were explored in this work. Significant amounts of Na and K can be released (maximum leaching for Na 59.0 mg g^-1 and ...

Hydraulic lift, water movement from deep to upper soil layers by roots, is a widespread process in temperate and semi-arid environments. It can contribute 17-81% of total water transpired and favour the uptake of nutrients available mainly from soil organic matter decomposition (e.g. N). Downward...

Effects of arbuscular mycorrhizal (AM) fungi on plant growth and soil nutrient depletion are well known, but their roles as nutrient interceptor in riparian areas are less clear. The effects of AM fungi on growth, soil nutrient depletion and nutrient leaching were investigated in columns with two...

Afforestation is a recommended practice to mitigate global warming. However, their implementation may generate undesirable impacts, mostly if exotic species are used. Plantations of Pinus radiata D Don in Ventania (Bs. As., Argentina) soils showed notorious increments of extractable P (Pe), which...