Adult returns to many Atlantic salmon wild and hatchery stocks of the North Atlantic have
declined or collapsed since 1985. Enhancement, commercial fishery closures, and angling …

The timing of recurring biological and seasonal environmental events is changing on a
global scale relative to temperature and other climate drivers. This study considers the Gulf …

Ecological regime shifts are abrupt changes in the structure and function of ecosystems that
persist over time, but evidence of contemporary regime shifts are rare. Historical scale data …

A major challenge in understanding the response of populations to climate change is to
separate the effects of local drivers acting independently on specific populations, from the …

Migrations between different habitats are key events in the lives of many organisms. Such
movements involve annually recurring travel over long distances usually triggered by …

Abstract North American Atlantic salmon (Salmo salar) populations experienced substantial
declines in the early 1990s, and many populations have persisted at low abundances in …

In several groups of anadromous fishes, but especially the salmonids, some populations
migrate from the ocean to fresh water many months prior to spawning. This “premature …

The northeastern North American continental shelf from Cape Hatteras to the Scotian Shelf
is a region of globally extreme positive trends in sea surface temperature (SST). Here, a 33 …

Atlantic salmon Salmo salar is a socio-economically important anadromous fish species that
has suffered synchronous population declines around the North Atlantic over the last five …

Parasites can, in theory, have large impacts on the survival of fish populations. One method
to evaluate such impacts on anadromous species is to apply manipulative field experiments …