International Journal of Limnology

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.

Our paper reviews the restoration and conservation strategies applied towards coregonines (e.g., whitefishes, ciscoes) across Europe, Asia, and North America. The highlighted strategies included 1) stocking of hatchery-reared fish, 2) controlling invasive species, 3) translocating fish, 4) restoring habitat, and 5) eliminating harvest or creating protected areas.

In our study of the spawning behaviour of lake whitefish, we observed fish using a variety of habitat types during the spawning season, including a rocky spawning shoal, sandy substrates, and steeper slopes. Both sexes moved shallower at night and deeper during the day, with males moving more at night and females more during the day. This study could help inform stewardship efforts aimed at lake whitefish spawning habitat restoration and protection.

We exploredpotential drivers of larval coregoninedistributions in Lake Geneva, France and Lake Superior, USA. Depth and wind were important drivers in both lakes, date was important in Lake Geneva, and available preydensity was not important. Understanding the importance of these factors can help elucidate mechanisms regulating larval survival.

The Detroit River once supported a substantial lake whitefish (Coregonus clupeaformis) fishery until the early 1900s. As a result of almost 50 years of efforts to improve water and habitat quality, lake whitefish have begun to spawn in the river and viable eggs were collected. Genetic analysis of larval fish hatched from eggs collected in the field between 2005 and 2018 found thatover 80% of the hatched larvae had parents originating from Lake Erie. The estimated number of lake whitefish parents at Fighting Island decreased in the most recent collections possibly due to loss of habitat on spawning reefs due to sedimentation or a change in sample design. Our results provide additional evidence that restored spawning habitat in the Detroit River is again being used by lake whitefish and continued reproduction at these sites may improve the Great Lakes portfolio of ecological and genetic diversity.

In our study of the spawning behaviour of lake whitefish, we observed fish using a variety of habitat types during the spawning season, including a rocky spawning shoal, sandy substrates, and steeper slopes. Both sexes moved shallower at night and deeper during the day, with males moving more at night and females more during the day. This study could help inform stewardship efforts aimed at lake whitefish spawning habitat restoration and protection.

Our paper reviews the restoration and conservation strategies applied towards coregonines (e.g., whitefishes, ciscoes) across Europe, Asia, and North America. The highlighted strategies included 1) stocking of hatchery-reared fish, 2) controlling invasive species, 3) translocating fish, 4) restoring habitat, and 5) eliminating harvest or creating protected areas.

We exploredpotential drivers of larval coregoninedistributions in Lake Geneva, France and Lake Superior, USA. Depth and wind were important drivers in both lakes, date was important in Lake Geneva, and available preydensity was not important. Understanding the importance of these factors can help elucidate mechanisms regulating larval survival.

From the beginning of the 1980s, professional fishermen and recreational anglers, together with state services and researchers from INRA, developed an applied research program focusing on the improvement and optimisation of salmonid stocking in the Lakes Geneva and Bourget. The aim of thispaperis to retrospectively retrace the key stages of this program and its main impacts on society.

Our study introduces the first Bayesian Delay-Difference model adapted to whitefish fisheries in peri-alpine lakes. By analyzing various data, the model accurately estimates annual biomass, recruitment, stage structure of landings, and fishing mortality. These insights are invaluable for comprehending the historical trends and impacts of fishing activities on these stocks.

We found that the phytoplankton's carotenoids in a small shallow lake correlate with nitrate-nitrogen. We also show that primary production and the nitrate content can be in stoichiometric relation. The results of the present study provide some materials on nitrogen limitation of freshwater aquatic systems.

In our study of the spawning behaviour of lake whitefish, we observed fish using a variety of habitat types during the spawning season, including a rocky spawning shoal, sandy substrates, and steeper slopes. Both sexes moved shallower at night and deeper during the day, with males moving more at night and females more during the day. This study could help inform stewardship efforts aimed at lake whitefish spawning habitat restoration and protection.

Our study introduces the first Bayesian Delay-Difference model adapted to whitefish fisheries in peri-alpine lakes. By analyzing various data, the model accurately estimates annual biomass, recruitment, stage structure of landings, and fishing mortality. These insights are invaluable for comprehending the historical trends and impacts of fishing activities on these stocks.

Amphibians are major members of aquatic and terrestrial ecosystems. They serve as both predator and prey in both ecosystems. Therefore, they provide the transfer of energy between these systems. However, there are few studies on the gametogenesis of amphibian. Therefore, histological characteristics of Pelophylax bedriagae testes were studied.

We exploredpotential drivers of larval coregoninedistributions in Lake Geneva, France and Lake Superior, USA. Depth and wind were important drivers in both lakes, date was important in Lake Geneva, and available preydensity was not important. Understanding the importance of these factors can help elucidate mechanisms regulating larval survival.