Our planet is being subjected to unprecedented climate change, with far-reaching social and
ecological repercussions. Below the waterline, aquatic ecosystems are being affected by …

The ice‐cover period in lakes is increasingly recognized for its distinct combination of
physical and biological phenomena and ecological relevance. Knowledge gaps exist where …

Thermal preference and performance provide the physiological frame within which fish
species seek strategies to cope with the challenges raised by the low temperatures and low …

Anthropogenic modifications to aquatic ecosystems have altered connecting pathways
within, and in some cases, between watersheds. Human structures, such as hydroelectric …

Coastal habitats, such as seagrasses, mangroves, rocky and coral reefs, salt marshes, and
kelp forests, sustain many key fish and invertebrate populations around the globe. Our …

Yawning is a phylogenetically old behaviour that can be observed in most vertebrate
species from foetal stages to old age. The origin and function of this conspicuous …

It is thought that some elasmobranchs use shallow temperate estuaries during warmer
months because these habitats may provide thermal physiological advantages. However …

Millions of lakes inversely stratify during winter. Seemingly subtle variations in the duration
of winter stratification can have major ecological effects by, for example, altering the vertical …

The hydrosphere is a repository for all of our waste and mistakes, be they sewage, garbage,
process-affected waters, runoff, and gases. For fish living in environments receiving …

Oxygen is a critical factor for most organisms and this is especially true for aquatic animals.
Unfortunately, high-density aquaculture farming practices and environmental degradation …