One problem is that fisheries often target what scientists call BOFFFFs: big, old, fat, fecund, female fish. Their large bodies are prized by fishers, but BOFFFFs are a vital source of new baby fish. Take these away and the size spectrum quickly veers out of kilter. One way to manage this is to encourage the fishing industry to target medium-size fish, allowing mature ones to replenish depleted populations.
Research
Is There Hope for Coral Reefs?
Finding Bright Spots in the Global Coral Reef Catastrophe The first-ever report on the world’s coral reefs presents a grim picture, as losses mount due to global warming. But there are signs of hope — some regions are having coral… Read More ›
Atlantic Ocean Currents Weakening
Vincent Saba, a fisheries researcher with the National Oceanic and Atmospheric Administration’s Northeast Fisheries Science Center, said he’s worked on related studies showing that weakening of the Gulf Stream system leads to regional warming of the waters along the continental shelf of Northeastern North America, prime grounds for commercial and recreational fishing.
New Zealand Ocean Waters’ “Signs of structural collapse…”
“We’re getting vision of this landscape scale collapse for the first time … arguably it’s a little bit worse than we expected because of the extent of the barreness and the distribution so far out to sea,” Frankham told Breakfast.
High Concentrations of Microplastics in Deep Sea Sediment.
It’s been calculated that something in the order of four to 12 million tonnes of plastic waste enter the oceans every year, mostly through rivers.
Dungeness Crab Impacted by Acidification
“This is the first study that demonstrates that larval crabs are already affected by ocean acidification in the natural environment, and builds on previous understanding of ocean acidification impacts on pteropods,” said lead author Nina Bednarsek, senior scientist with the Southern California Coastal Water Research Project. “If the crabs are affected already, we really need to make sure we start to pay much more attention to various components of the food chain before it is too late.”
New report connects ocean changes with human activities on land.
The report makes clear that to protect the ocean, we must first reduce our dependence on fossil fuels. But we must also reduce ocean stress, caused by overfishing and pollution, so the ocean is healthy enough to weather the changes already underway.
“The bottom line is that we need the ocean. And right now, the ocean needs us,” said Julie Packard, executive director of the Aquarium. “It’s not too late to take courageous climate action and safeguard the ocean from further damage.”
From Visible Plastics to Nanoplastics in the Ocean
What we commonly see accumulating at the sea surface is “less than the tip of the iceberg, maybe a half of 1% of the total,” says Erik Van Sebille, an oceanographer at Utrecht University in the Netherlands.
The Ocean Gasps for Air
This loss of oxygen in the ocean is significant enough to affect the planetary cycling of elements such as nitrogen and phosphorous which are, “essential for life on Earth,” Dr. Laffoley said.
Recent Data on Plastics in the Ocean
Where does our plastic accumulate in the ocean and what does that mean for the future? September 24, 2019 by Hannah Ritchie Our World in Data presents the empirical evidence on global development in entries dedicated to specific topics. … Read More ›
Neptune 911! 