Using pikeperch ( Sander lucioperca ) as a model species, we investigated the factors influencing fluctuations in the abundance of piscivorous intra‐annual cohorts and assessed the role of three distinct cohorts: extremely small (ES), ordinary (or mid‐sized) fingerlings, and piscivorous in shaping year‐class strength. Our analysis was based on 13 years of data (2003–2024) collected in the Lipno Reservoir, Czechia. Using LASSO...

Dairy wastewater (DWW) contains very high levels of fats and oils (FAO), organic compounds, and other nutrients. These components pose a danger to the biological processes of wastewater treatment plant (WWTP) and may also affect the effluent's quality. This study focuses on the combined approach of conventional Failure Mode and Effects Analysis (FMEA) and monitoring of a WWTP treating mainly DWW. After some actions were implem...

Predator species of fish play crucial roles in ecosystem balance through top‐down control, a mechanism frequently exploited in biomanipulation to stock predator species. Juvenile pikeperch ( Sander lucioperca ) were stocked ( n = 52,887) in spring 2023 and 2024 and autumn 2023 to compare stocking efficiency between Recirculation Aquaculture Systems (RAS) and pond culture systems. Post‐stocking mortality was high and differed a...

Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown. So too does the set of characteristics that distinguishes such species from other threatened species. For vascular plant species, we combined information from databases...