Search our collection of background (non-event) articles from news media, science journals and other sources.
In some regions, this was the first time in 37 years of water surveys that there was no cold pool.
A 2008 report by the Canadian Food Inspection Agency said there were at least 486 invasive alien plant species alone in Canada.
The catch is shifting northward as water temperatures rise, forcing crews to retool their boats and rework their businesses. Pollock is retreating from Alaska while black sea bass throng around Rhode Island.
Climate change is ravaging the natural laboratory that inspired Darwin. The creatures here are on the brink of crisis.
In 2016 and 2017 commercial fishers near Cambridge Bay in Nunavut were surprised when they pulled in sockeye salmon — because they were expecting to see only Arctic char. While these are just two fish, found far from their usual home waters, the two salmon are likely an indication that Pacific salmon will continue to
Only one, located in British Columbia's Thompson River, is considered stable.
December 3, 2018 – A new study by MBARI scientists shows that pulses of sinking debris carry large amounts of carbon to the deep seafloor, but are poorly represented in global climate models.
"Sockeye salmon harvest has been pretty constant for the last four years or so, but pink salmon has been oscillating," he said. "We were forecasting almost 70 million pink salmon harvest, and we had 40 million.
Fisheries and Oceans Canada confirms the findings of independent research that says sea lice on salmon farms are becoming resistant to SLICE, a pesticide used to kill sea lice.
Reports that the sea star population was rebounding appear to have been overly optimistic, says the Coastal Ocean Research Institute.
Sockeye salmon runs across Alaska were dismal this year. But no one is certain why.
Bad weather is bad news, also for the red-listed kittiwake. New research reveals that wind conditions combined with the availability of different prey species are determinants of chick production in this seabird.
Some Indigenous people are applauding the “precautionary” approach several nations are taking to protect the environment through a new moratorium on commercial fishing in the High Arctic.
The Alaska Department of Fish and Game is planning to apply the fish-killing chemical rotenone to eight lakes in the Tote Road area south of Soldotna next week.
A new study links rapid deoxygenation in the Gulf of St. Lawrence to two powerful currents: the Gulf Stream and the Labrador Current.
Commercial salmon fisheries in Washington, Oregon, and California are eligible for a portion of $20 million in disaster assistance after federal officials determined fishery failures occurred.
Redmap, a new and interactive website, invites the Australian community to spot, log and map marine species that are uncommon in Australia, or along particular parts of our coast.
Foraging strategies and their resulting efficiency (energy gain to cost ratio) affect animals' survival and reproductive success and can be linked to population dynamics. However, they have rarely been studied quantitatively in free-ranging animals. We investigated foraging strategies and efficiencies of wild northern fur seals Callorhinus ursinus during their breeding season to understand potential links to the observed population decline in the Bering Sea. We equipped 20 lactating females with biologgers to determine at-sea foraging behaviours. We measured energy expenditure while foraging using the doubly-labelled water method, and energy gained using (1) the types and energy densities of prey consumed, and (2) the number of prey capture attempts (from acceleration data). Our results show that seals employed 2 foraging strategies: one group (40\%) fed mostly in oceanic waters on small, high energy-density prey, while the other (60\%) stayed over the shallow continental shelf feeding mostly on larger, lower quality fish. Females foraging in oceanic waters captured 3 times more prey, and had double the foraging efficiencies of females that foraged on-shelf in neritic waters. However, neritic seals made comparatively shorter trips, and likely fed their pups similar to 20 to 25\% more frequently. The presence of these strategies which either favor foraging efficiency (energy) or frequency of nursing (time) might be maintained in the population because they have similar net fitness outcomes. However, neither strategy appears to simultaneously maximize time and energy allocated to nursing, with potential impacts on the survival of pups during their first year at sea.
PROVIDENCE, R.I. – It may be time for local eateries to explore black sea bass recipes. Warmer waters off Rhode Island have caused a spike for this species, and loosened regulations are reeli…
Salmon used to be infrequent visitors to the Mackenzie River and communities of the Arctic, but more species have begun to show up in the North more often and in greater numbers than ever before.
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