Harmful and nuisance algal blooms are becoming a greater concern to public health, riverine ecosystems, recreational uses of inland waterways. Algal bloom proliferation has increased in the Upper Clark Fork River due combination warming water temperatures, naturally high phosphorus levels, an influx nitrogen from various sources. To improve understanding dynamics how they affect quality, often ...

The rise of atmospheric oxygen during the Great Oxidation Event some 2.4 billion years ago was a defining transition in evolution global biogeochemical cycles and life on Earth. However, mild oxidative continental weathering development ocean oases occurred several hundred million before Event. thus represents tipping point, whereby primary productivity O2 production overwhelmed input reduced s...

Abstract. Hypersaline tidal flats (HTFs) are coastal ecosystems with freshwater deficits often occurring in arid or semi-arid regions near mangrove supratidal zones no major fluvial contributions. Here, we estimate that organic carbon (OC), total nitrogen (TN) and phosphorus (TP) were buried at rates averaging 21 (±6), 1.7 (±0.3) 1.4 gm-2yr-1, respectively, during the previous century three con...

If arbuscular mycorrhizal fungi (AMF) promote phosphorus partitioning of plant hosts, they could provide one mechanism for the maintenance of plant community diversity. We investigated whether AMF improved the ability of old field perennials to grow on a range of phosphorus sources and whether AMF facilitated differential performance of plant species on different phosphorus sources (phosphorus ...

Wastewater Treatment Facilities have been built to remove biological and chemical waste from water as it is used. These facilities maintain a healthy environment for organisms as well as people because it removes potentially harmful material and kills pathogens that would easily spread through cities. Phosphorus is a compound of interest because a high concentration of it at discharge will even...

The hypothesis that ethylene participates in the regulation of root hair development by phosphorus availability in Arabidopsis thaliana was tested by chemically manipulating ethylene synthesis and response and with ethylene-insensitive mutants. Low phosphorus-induced root hair development could be mimicked by adding the ethylene precursor, 1-aminocyclopropane-1-carboxylate (ACC), to high phosph...

Non-point source pollution is widely considered a serious threat to drinking water. Eutrophication in Chinese watershed is mainly due to nitrogen and phosphorus output from agricultural source. Taihu Lake is a typical eutrophic lake in China, a basin representative for the study of the temporal-spatial characteristics of pollution loading of nitrogen and phosphorus to provide scientific basis f...

A new model has been developed for assessing the effects of multiple sources of phosphorus on the water quality and aquatic ecology in heterogeneous river systems. The Integrated Catchments model for Phosphorus (INCA-P) is a process-based, mass balance model that simulates the phosphorus dynamics in both the plant/soil system and the stream. The model simulates the spatial variations in phospho...