Alternative stable states in shallow lakes are typically characterized by submerged macrophyte (clear-water state) or phytoplankton (turbid state) dominance. However, a clear-water state may occur in eutrophic lakes even when macrophytes are absent. To test whether sediment algae could cause a regime shift in the absence of macrophytes, we developed a model of benthic (periphyton) and planktoni...

Global warming, eutrophication, fisheries overexploitation, species invasions, and habitat loss are the major threats to freshwater biodiversity. The aim of this study was determine richness diversity fish in 535 Polish lakes different morphometry (area more than 50 ha a maximum depth ranging from 0.4 108.5 m) trophic status (from oligotrophy hypereutrophy). A total 39 were found studied lakes,...

Lakes and ponds are dominant components of Arctic landscapes provide food water for northern communities. In the Greiner Lake watershed, in Cambridge Bay (Nunavut, Canada), bodies small (84% <5 ha) shallow (99% <4 m deep). Such characteristics make them vulnerable to eutrophication as temperatures rise nutrient concentrations from greening landscape increase. Here, we investigated compare...

The relationship between biodiversity and ecosystem functioning is a central issue in ecology. Previous studies have shown that producer diversity can impact the consumer community via predator-prey interactions. However, direct observations of this relationship remain rare, in particular for aquatic ecosystems. In this research, the relationship between phytoplankton diversity (species richnes...

Nutrient criteria provide the numeric basis for lake eutrophication management. However, there are two obstacles that can hinder effective application of nutrient criteria, including 1) although total phosphorus (TP) and nitrogen (TN) might co-limit phytoplankton biomass in eutrophic lakes, their often developed independently; 2) linkage between percentile-based compliance assessment method chl...

Cycling of water quality constituents in lakes is affected by thermal stratification and homo-thermal conditions other factors such as oligotrophication, eutrophication, microbial activities. In addition, hydrological variability can cause greater differences residence time cycling man-made (reservoirs) than natural lakes. Thus, investigations are needed on vertical mixing new impounded reservo...

Abstract Many populations of water fleas ( Daphnia ) are exposed to algal blooms dominated by microcystin‐producing cyanobacteria. However, the severity these effects on fitness remain poorly understood in natural populations. We investigated seasonal changes body size, reproduction and survival D . longispina individuals from five eutrophic lakes southern Sweden. tested whether collected befor...