Nutrient and grazing levels were manipulated in a 10 wk field experiment at 2 sites in a subtropical lagoon in Bermuda to evaluate their relative effects on the abundance and growth of the dominant seagrass and macroalgae. One site was eutrophic, the other mesotrophic to oligotrophc. Nutrients were added to the sediment-water interface using slow-release fertilizer, and the dominant herbivores ...

Long-term observations are necessary to analyze and predict changes occurring in biological communities under global regional climatic changes. The data on seasonal long-term dynamics of chlorophyll plankton the Rybinsk Reservoir (Upper Volga, Russia) obtained May – October 2009–2019 at six standard stations using fluorescence method presented. In years with contrasting hydroclimatic conditions...

As taste-and-odor outbreaks are common in surface waters worldwide, extensive studies have focused on the identification of microorganisms involved production 2-methylisoborneol (MIB) and geosmin (GSM). However, fewer tried to identify potential degraders natural environments. Eagle Creek Reservoir, a temperate eutrophic water body, experienced two major seasonal odorous 2013 with maximal conce...

Abstract The quality of surface waters in the territory Poland, despite implemented remedial measures, is mostly classified as bad. This article presents results research on composition water macroelements 24 artificial reservoirs located Opole province (southern Poland), searching for reasons behind their pollution. Concentrations anions F − , Cl Br NO 2 3 PO 4 3− and SO 2− cations Na + NH K M...

Abstract Background and purpose: Eutrophication is one of the major environmental problems in waterways causing substantial adverse impact on domestic, livestock and recreational use of water resources. Aras Dam, Iran which provides Arasful city with drinking water, has chronic algal blooms since 1990. Levels of up to 900,000 cells/mL of toxic cyanobacteria (mainly Anabaena and Microcystis) hav...

Post-depositional degradation of organic matter (OM) in freshwater sediments is crucial for driving the biogeochemical dynamics and influencing carbon burial. This process also often causes diagenetic alteration on paleoenvironmental proxies. Yet, mechanisms behind sedimentary OM depth-related variations stable isotope ratios can so far only be explained part. Degradation two drinking water res...

The Çaygören Reservoir was sampled monthly from February 2007 to January 2009 at three stations to determine the relationships between the chlorophyll-a (Chl-a) dynamics and soluble reactive phosphorus (SRP), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), water discharge, water transparency, water temperature (T), specific conductance (SC) and pH. Thermal stratification occurred in the re...

The Çaygören Reservoir was sampled monthly from February 2007 to January 2009 at three stations to determine the relationships between the chlorophyll-a (Chl-a) dynamics and soluble reactive phosphorus (SRP), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), water discharge, water transparency, water temperature (T), specific conductance (SC) and pH. Thermal stratification occurred in the re...