Salmon are spawning in Arctic rivers, researchers confirm

Researchers have confirmed that salmon are spawning in an Arctic Ocean watershed, suggesting that at least some salmon species could be expanding to new territory as climate change reshapes their habitat.

River ice can shape watershed ecology

River ice cover not only affects rivers during the winter but can also influence both physical and biological processes throughout the year, including the timing and duration of ecological productivity, under-ice light availability, ...

Dams exacerbate the consequences of climate change on river fish

A potential response of river fish to environmental changes is to colonize new habitats. But what happens when dams and weirs restrict their movement? And are native and alien species similarly affected? Researchers from ...

Asian carp roundup in Kentucky opens new front in battle

Like a slow-motion, underwater cattle drive, wildlife officials in a half-dozen aluminum boats used pulses of electricity and sound on a recent gray morning to herd schools of Asian carp toward 1,000-foot-long (305 meters) ...

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