As demand on freshwater resources increases, managers are increasingly tasked with identifying water withdrawal, storage, and management strategies that minimize impacts on aquatic species. Identifying critical features of the flow regime that sustain particular ecological processes can be difficult due to site and speciesspecific characteristics. Our goal was to simulate tradeoffs between diff...

INTRODUCTION Planorbis planorbis (Ram's Horn Snail) is a species of air-breathing freshwater snail, an aquatic gastropod mollusk in the family Planorbidae. It is one of the most common freshwater snails in Europe, occurs in numerous water body types with a preference for standing water such as ponds, swamps or lakes with slow moving or stagnant waters. As typical freshwater invertebrate it is c...

Department of Natural Resources, Isfahan University of Technology, 84156 Isfahan, Iran b Eawag, Swiss Federal Institute of Aquatic Science and Technology, P.O. Box 611, 8600 Dübendorf, Switzerland Department of Civil & Environmental Engineering, Amirkabir University of Technology, Tehran, Iran Alberta Water Research Institute (AWRI), Edmonton, AB T5N 1M9, Canada Nanyang Technological University...

Aquatic nematode-trapping hyphomycetes have rarely been studied. The current study examined 1000 waterlogged soil samples in order to systematically investigate resources of aquatic nematode-trapping hyphomycetes and to compare species diversity and community similarities in polluted and unpolluted aquatic environments. Many nematode-trapping hyphomycetes live in shallow freshwater (at a water ...

Functioning ecosystems offer multiple services for human well-being (e.g., food, freshwater, fiber). Agriculture provides several of these services but also can cause negative impacts. Thus, it is essential to derive up-to-date information about agricultural land use and its change. This paper describes the multi-temporal classification of agricultural land use based on high resolution spotligh...

A mixed-model moving-average approach to geostatistical modeling in stream networks. Ecology 91:644–651. South East Queensland (SEQ) is located on the eastern coast of Australia and is approximately 22,999 square km in size. It is a subtropical region with mean annual maximum temperatures ranging between 21 and 29 °C (EHMP, 2001) and total annual rainfall ranges between 900 and 1800 mm (Pusey e...

In order to investigate the factors controlling viral abundance, 22 lakes In Quebec were surveyed. We measured viral and bacterial abundance, bacterial production, chlorophyll a, total phosphorus and DOC (dissolved organic carbon) concentrations. Regression models built with these data were compared to models based on literature data, which to date have been collected largely from marine sites ...

Shifts in the timing and magnitude of the spring plankton bloom in response to climate change have been observed across a wide range of aquatic systems. We used meta-analysis to investigate phenological responses of marine and freshwater plankton communities in mesocosms subjected to experimental manipulations of temperature and light intensity. Systems differed with respect to the dominant mes...

In this report we describe different combinations of physical separation and antibiotic treatment to remove associated bacteria from freshwater diatoms. Diatoms were purified either from natural epilithic biofilms or from uni-algal cultures. We found that for most strains different purification procedures have to be combined individually. In a new approach we show that for some diatom strains t...

We examined patterns of habitat function (plant species richness), productivity (plant aboveground biomass and total C), and nutrient stocks (N and P in aboveground plant biomass and soil) in tidal marshes of the Satilla, Altamaha, and Ogeechee Estuaries in Georgia, USA. We worked at two sites within each salinity zone (fresh, brackish, and saline) in each estuary, sampling a transect from the ...