In the study, Sander luciopercais reported for the first time in the Euphrates-Tigris Basin (Keban Dam Lake - eastern Anatolia). Local fish species throughout the entire basin, from Anatolia to the Persian Gulf, are under threat due to predatory extreme characteristic of the S. lucioperca.

Schellencandonarhodanensissp. n. is a stygobite species collected in the interstitial habitat of the Rhône River and its tributaries. It can be distinguish of S. triquetra by its morphological and ecological characteristics and can be used as an indicator of high sediments stability and groundwater upwelling zones.

Amphibious plant species successfully thrivein water and on dry land. Outstanding phenotypic plasticity at structural and functional levelsenables optimal performance in contrasting environments.They have great potential to colonise aquatic ecosystemswherethe hydrological regime isaltered by climate changes.

Changes in GPx activity emerged as the most sensitive biomarker to the trout farm's effluents, showing higher sensitivity compared to macrozoobenthos indices (SI, BMWP, and MBMWPPO). The data collected during this study provides a more detailed analysis and improved insight into the conditions of natural habitats and the organisms living there.

Fertilization and early development of coregonines were affected by sulfate in toxicity tests. The sulfate tolerance of brackish water forms of vendace and whitefish was higher than freshwater forms. The lethal concentrations of sulfate toxicity determined in this study provide valuable information for the construction of species sensitivity distributions, and further formulation the water quality guidelines for both brackish and freshwater environments.

There was no association between water level variables and the density of newly hatched whitefish larvae or egg survival. Neither was the average larval density in the regulated lakes generally lower than that in the non-regulated lake. Thus, moderate water level regulation does not drive whitefish population dynamics directly by negatively affecting the life stage from spawning to hatching.

This study assessed the effectiveness of a 3D floating structure (FLOLIZ) mimicking a littoral zone to support northern pike population in a French hydropower reservoir. Visual surveys carried out over 2019-2023 highlighted an annual recurrence of juvenile pike in FLOLIZ and a higher abundance than in the littoral control stations. The results highlighted the potential of FLOLIZ to provide refuge and nursery habitats for juvenile pike in reservoirs.

In this study, we tried to highlight the controlling factors of litter breakdown in African streams using 13 sites in the natural rainforest of South Cameroon. The goals of this study were to highlight the biological and physico-chemical determinants of leaf litter breakdown in streams and to compare those factors to other factors found in temperate and other tropical streams.

The established population of Quistadrilusmultisetosus (Smith, 1900) inhabits a sidearm of the Danube River in Slovakia. This discovery marks a new species for the Slovak fauna and is the first documented record of this species in the Danube River and its floodplain system.

Perialpine lakes face climate warming, impacting coregonine fish populations. The exposition of European whitefish embryos from perialpine populations to actual/cold and future/warm temperatures in the lab reveals strong impact on survival and incubation duration and contrasted ability of populations to cope with warming waters.