This work presents ongoing efforts and preliminary results for building a dataset that represents the first and most comprehensive bio-optical information available on Brazilian inland waters to support the development of remote sensing algorithms for monitoring aquatic systems. From 2012 to 2014 optical and limnological data was gathered along thirteen field campaigns in five Brazilian reservo...

The water quality of rivers, lakes or reservoirs changes in both short and long term. For a given catchment with known pollution sources, different combinations of hydrologic and pollutants discharges scenarios may result in different impacts in the water quality. The objectives of the present work were to analyze the methodologies currently used for assessment of pollution impacts in lakes and...

This study involves a phytoplankton summer/autumn survey in 46 Virginia lakes and reservoirs during 2010-2012. A total of 307 taxa were identified which included several filamentous and colonial cyanabacteria in bloom concentrations.With the exception of one natural lake, the other sites sampled represent impoundments created decades ago, with the majority presently classified as mesoor eutroph...

There are many examples of how human activities alter species’ habitats, including the damming lakes or rivers to create reservoirs. We build dams reservoirs that provide water and generate electricity for needs. Scientists have learned building new creating on changes local habitat, making it unsuitable species once lived there. Through processes known as environmental flows, can be operated r...

Due to the great climatic variety and the peculiar north-south orographic distribution, Argentinean lake systems include a wide diversity of aquatic environments. The deepest lakes are situated in the Patagonian Andes and Tierra del Fuego, and range from ultraoligotrophic to oligotrophic. Patagonian Plateau lakes are shallower than Andean lakes and usually range from mesotrophic to eutrophic. A...

To study the relationships between the biomass of reservoir communities and to examine the differences between reservoirs with different fish assemblages, we used limnological and fish data for 31 Argentinean reservoirs. Despite conspicuous systemic differences with lakes, reservoirs dominated by visual zooplanktivorous fishes have had phytoplankton biomass drastically higher than reservoirs wi...

GOAL, SCOPE AND BACKGROUND Humans now strongly influence almost every major aquatic ecosystem, and their activities have dramatically altered the fluxes of growth-limiting nutrients from the landscape to receiving waters. Unfortunately, these nutrient inputs have had profound negative effects upon the quality of surface waters worldwide. This review examines how eutrophication influences the bi...

[1] The role of aquatic ecosystems in regional and global carbon cycles is becoming increasingly apparent, and lakes and reservoirs may be particularly important to the retention and processing of organic carbon. If this is the case, then lakes and reservoirs may act as control points that decrease OC concentrations and fluxes in downstream aquatic ecosystems. We tested this hypothesis at a reg...

Index words: Hemimysis Invasive species Great Lakes Ecological impact Food webs Risk assessment The bloody redmysid shrimp Hemimysis anomala is the most recent Ponto-Caspian invader of the Great Lakes. At present, there is a paucity of data that can be used to forecast its ecological impacts in North America; however, published studies of other invasive freshwater mysids (i.e. Mysis diluviana i...

TRAYKOV, I., A. TOSHEVA and E. UZUNOVA, 2010. Physicochemical characteristics of dam lakes in Southwestern Bulgaria. Bulg. J. Agric. Sci., 16: 350-357 The validity of the defined water body types in Bulgaria and the relationships between the nutrient concentration and the response variables to eutrophication was tested in eight reservoirs in the Struma River Basin. The applicability of differen...