Sampling Ocean Waters for Species’ DNA Shows Promise in Ecosystem…

PEW Charitable Trusts — Effectively managing marine ecosystems—by preserving biodiversity, protecting ocean-based livelihoods, and ensuring sustainable fisheries—requires a lot of information about threats, and about species location, abundance, and food and habitat needs. Regularly collecting this data as part of a monitoring program allows for informed and adaptive decision making on Read More…

Movement of plankton between tropical marine ecosystems drives…

PhysOrg — A new analysis suggests that the movement of plankton and plankton-eating fish play a central role in driving local spikes of extreme biological productivity in tropical coral reefs, creating "sweet spots" of abundant fish. Renato Morais of James Cook University in Townsville, Australia, and colleagues present these findings in a study publishing November 2nd in the open-access Read More…

The ebb and flow of fish biomass over the decades

The McGill Tribune — The oceans once held what humans considered to be a limitless supplyof fish—populations were so abundant that it was nearly inconceivable that the waters would ever run out. That viewpoint was challenged in the ‘80s and ‘90s as overfishing caused fish stocks in the North Atlantic to rapidly collapse. According to a recent study published in Science Advances led Read More…

Ancestors of Whale Sharks in Panama May Come From Distant Waters…

SciTechDaily — The world’s largest fish, the whale shark (Rhincodon typus), is a plankton-loving giant that can be found alone or in groups in all tropical oceans. However, despite being a highly migratory species, little is known about how the different populations worldwide interact with each other. This lack of knowledge hinders conservation efforts aimed at protecting this endangered Read More…

DNA left behind by solo beluga whale helps unravel mystery of its…

KNKX — Federal scientists have a few more clues about the lone beluga whale that was seen at various points around Puget Sound and the Salish Sea last month. For starters, they think the bright white whale is probably not part of an endangered population. The flash of white seen by whale enthusiasts — and heard on underwater mics called hydrophones — surprised pretty much everyone who Read More…

Oregon Lawmakers Warn: Drought Has Cut the Salmon Haul in Half

Willamette Week — Much of Oregon’s congressional delegation is asking the federal government to declare the effects of three consecutive years of drought a disaster for Chinook salmon fishing. The lawmakers, led by U.S. Sen. Jeff Merkley, asked Oct. 21 that the U.S. Department of Commerce approve Gov. Kate Brown’s request that the feds greenlight a “catastrophic regional fishery Read More…

Sitka Advisory Committee urges a swift end to halibut, salmon bycatch…

KCAW — The Sitka Fish & Game Advisory Committee has gone on record urging the federal government to cap the excessive bycatch of halibut, salmon, and other valuable species in the Bering Sea trawl fisheries, which primarily target pollock. The group penned a letter as part of its increased work schedule, as the December deadline to make recommendations for state-managed fisheries also Read More…

NOAA pledges $15.2 million to tackle harmful algal blooms

The Fish Site — “New projects will begin in Florida, Louisiana, Ohio and Washington to investigate the effectiveness of clay dispersal as a technology to control Karenia brevis blooms in the coastal environment of Southwest Florida; enhance the freshwater HAB toxin detection capabilities of autonomous underwater vehicles; and optimize an early warning system to support the mitigation of Read More…

New dataset calculates 24 trillion pieces of microplastics in the…

PhysOrg — In the Age of Exploration, scientists sailed across the oceans to discover indigenous flora and fauna in faraway lands. Today, scientists are sailing the world's open seas equipped with a tow net and flowmeter to sample microplastics. Now, a global team of oceanographers led by Kyushu University researchers has calibrated and processed data from these expeditions to build a publicly Read More…

Boost in Hatchery Salmon to Feed Endangered Southern Resident Orcas…

Fisherman's News — A new report from NOAA Fisheries says that federal, state and tribal salmon hatcheries in Washington and Oregon have boosted production of juvenile Chinook salmon over the past two years to help endangered southern resident orca whales recover. The southern resident orcas prey on salmon and other fish, rather than other sea mammals, and have a preference for king Read More…