Habitat preferences and movements of non-native rainbow trout
In many coldwater rivers and streams around the world, nonnative trout have altered the aquatic ecosystem. In the late 1800s, widespread trout stocking became commonplace and various trout species were […]
Spawning sea lampreys influence macroinvertebrate communities in streams
Sea lampreys (Petromyzon marinus) are a jawless species of fish native to the northern Atlantic Ocean and Mediterranean Sea. They have a complex life cycle that begins and ends in […]
Alewife spawning strategies may differ between river systems
Alewives (Alosa pseudoharengus) are small, silvery forage fish in the family Clupeidae (Figure 1). Their native range spans the eastern seaboard of North America from South Carolina to Newfoundland. Historically, […]
Effects of dam removals on riverine fish assemblages
In many rivers throughout the world, dams have greatly altered the aquatic ecosystem. These structures block migratory routes for anadromous species that live in saltwater and migrate into freshwater to […]
Dam removals improve American eel abundance
American eels (Anguilla rostrata) are slimy fish with long, snakelike bodies found along the Atlantic coast from Greenland to Brazil. Like many species of diadromous fish (species that migrate between […]
Using imaging sonar to count migrating river herring
Alewives (Alosa pseudoharengus) and blueback herring (Alosa aestivalis), collectively known as river herring, are small, silvery fish native to the east coast of North America. They are anadromous, meaning they […]
Timing of Atlantic salmon spawning migrations influenced by habitat availability
The Atlantic salmon (Salmo salar) is an anadromous fish species, which spawns in freshwater and migrates to the ocean to take advantage of marine resources for growth. As mature adults, […]
