Eurasian watennilfoil (Myriophyllum spicatum) is a submerged aquatic plant that was introduced to North America in the early 1900s (Smith and Barko, 1990). It is a troublesome weed that grows rapidly and tends to fonn a dense canopy on the surface of the water (Grace and Wetzel, 1978). Since Eurasian water-milfoil (EWM) is a problem in many freshwater lakes, safe alternative to herbicides are b...

Diazinon (O,O-diethyl O-[2-isopropyl-6-methyl-4pyrimidinyl] phosphothiate) is an organophosphate pesticide with widespread use on a variety of agricultural crops, such as fruit trees, corn, and tobacco (Burkepile et al., 2000). Approximately 6 million kg of diazinon are applied annually in the United States and, as a result, are a potential contributer to nonpoint source contamination of aquati...

The ecological impacts of invasive plants increase dramatically with time since invasion. Targeting young populations for treatment is therefore an economically and ecologically effective management approach, especially when linked to post-treatment monitoring to evaluate the efficacy of management. However, collecting detailed field-based post-treatment data is prohibitively expensive, typical...

Birch tar oil (BTO) is a by-product of processing birch wood in a pyrolysis system. Accumulating evidence suggests the suitability of BTO as a biocide or repellent in terrestrial environments for the control of weeds, insects, molluscs and rodents. Once applied as biocide, BTO may end up, either through run-off or leaching, in aquatic systems and may have adverse effects on non-target organisms...

We present here the concept of "in-plant" NMR and show that high-resolution NMR spectroscopy is suitable for the analysis of intact plants and can be used to follow the changes in the intraorganismal molecular composition over long time periods. The NMR-based analysis of the effect of different concentrations of heavy water on the aquatic plant Vesicularia dubyana revealed that due to the prese...

The continuing study of early angiosperms from the Yixian Formation (approximately 125 Ma) of northeastern China has yielded a second early angiosperm genus. This report is a detailed account of this early flowering plant and recognizes earlier reports of similar fossils from Russia and China. Entire plants, including roots, stems, and branches terminating in fruits are presented and reconstruc...

Ramie (Boehmeria nivea (L.) Gaud.) is a traditionally terrestrial fiber crop. However, hydroponic technology can enhance the quantity and quality of disease free Ramie plant seedlings for field cultivation. To date, few studies have attempted to examine the hydroponic induction of ramie roots and the molecular responses of ramie roots to aquatic environment. In this study, ramie tender stems wa...

The quality of our environment has become the predominant issue of today. In Florida, as well as other states in the country, there has been particular concern over the quality of our lakes. The United States Environmental Protection Agency has estimated that, of the 12 million lakes found in the United States, 25% are currently facing water quality problems (Nair and Graetz, 1997). Eutrophicat...

A point-intercept survey was implemented in August 2000 to determine the distribution and richness of aquatic plant species present in Waneta Lake and Lamoka Lake, NY. Myriophyllum spicatum (Eurasian watermilfoil) was the most commonly observed species in Waneta Lake (25% of entire lake, 78% of littoral zone) and Lamoka Lake (43% of entire lake, 77% of littoral zone). Eurasian watermilfoil biom...

Eutrophication and hypoxia within aquatic systems are a serious international concern. Various management practices have been proposed to help alleviate nutrient loads transported to the Gulf of Mexico and other high-profile aquatic systems. The current study examined the nutrient mitigation capacity of a vegetated (V) and non-vegetated (NV) agricultural drainage ditch of similar size and landf...