Posted on January 8, 2015 by Bob Berwyn
A court-ordered settlement will protect marine mammals.
Seafood imports to U.S. must meet high marine mammal protection standards
FRISCO — In what conservation advocates are calling a landmark settlement, the U.S. government this week agreed to implement a long-ignored provision of the Marine Mammal Protection Act that will require foreign fisheries to meet the same standards required of U.S. fishermen or be denied import privileges. Continue reading
Filed under: biodiversity, endangered species, Environment, Marine biology, ocean conservation | Tagged: marine mammals, ocean conservation, sustainable seafood, vaquita dolphins | 2 Comments »
Posted on December 26, 2014 by Bob Berwyn
Do you know where your plastic shopping bag ends up?
‘It is alarming to find such high levels of contamination, especially when the full effect of these plastics on the delicate balance of deep sea ecosystems is unknown’
FRISCO — After researchers found plastic litter even in some of the remote reaches of the Arctic Ocean a few years ago, it’s probably not surprising to learn that the deep sea is becoming a collecting ground for plastic waste.
Floating mats of plastic have become a breeding ground for bacteria that could bring invasive pathogens to the open sea, and in another study, researchers documented how crabs are ingesting plastic through their gills.
A new study, published this week in Royal Society Open Science, shows how plastic debris breaks down into microfibers that are piling up in the deepest parts of the sea. The scientists with the Plymouth University and Natural History Museum say there could be around four billion microscopic plastic fibers could be littering each square kilometer of deep sea sediment around the world. Continue reading
Filed under: Environment, Marine biology, ocean conservation | Tagged: Environment, ocean conservation, ocean garbage patches, oceans, plastic marine debris | 1 Comment »
Posted on December 24, 2014 by Bob Berwyn
Climate change, fossil fuel exploitation seen as key threats
FRISCO — A marine sanctuary designation could help protect Alaska’s Aleutian Islands from a series of growing threats, including overfishing, oil and gas development and increasing commercial shipping.
Those threats are being aggravated by climate change, rising sea-level and ocean acidification, according to a formal nomination for sanctuary status. The conservation push is being led by Public Employees for Environmental Responsibility and several other national marine conservation organizations. Continue reading
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Posted on December 11, 2014 by Bob Berwyn
Can Mediterranean dolphins survive the rising tide of tourism? bberwyn photo.
Pollution, boat strikes contribute to decline of Balearic population
FRISCO — Growing tourism, fishing, pollution and general marine traffic is threatening a small population of bottlenose dolphins living in coastal waters off the Pityusic Islands in the Mediterranean Sea, according to a study led by University of Barcelona researchers.
The biologists said they were able for the first time to get an accurate population count of the dolphins during spring and summer, crucial seasons for the marine mammals. Continue reading
Filed under: biodiversity, Environment, Marine biology, ocean conservation | Tagged: Balearic Islands, bottlenose dolphins, Environment, marine mammals, ocean conservation | Leave a comment »
Posted on December 2, 2014 by Bob Berwyn
Atlantic bluefin tuna are in trouble. Photo courtesy NOAA.
NOAA amends rules to protect Gulf of Mexico spawning areas
Federal resource managers this week said they’ll tweak fishing regulations to try and protect Atlantic bluefin tuna to help ensure compliance with international quotas set to maintain sustainable stocks of the commercially valuable fish.
The species is categorized as endangered on the IUCN red list. By some estimates, there has been a global decline of between 29 percent and 51 percent based on summed spawning stock biomass from both the Western and Eastern stocks over the past 21–39 years. Continue reading
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Posted on September 30, 2014 by Bob Berwyn
An endangered green sea turtle swims along the sea bottom. Photo courtesy NOAA.
‘We’re drawing direct lines from human nutrient inputs to the reef ecosystem, and how it affects wildlife’
FRISCO — What goes on your lawn and garden doesn’t stay there — and that’s bad news for sea turtles in Hawaii, Duke University biologists said this week, explaining that pollution from urban areas and farms is causing often-deadly tumors in the endangered animals.
A new study, published Tuesday in the peer-reviewed open-access journal PeerJ, shows that nitrogen in the runoff ends up in algae that the turtles eat, promoting the formation of tumors on the animals’ eyes, flippers and internal organs. Continue reading
Filed under: biodiversity, endangered species, Environment | Tagged: Environment, green sea turtle tumors, nutrient pollution, ocean conservation, sea turtles | Leave a comment »
Posted on July 15, 2014 by Bob Berwyn
Scientists call for network of protected areas
The English Channel. Photo courtesy NASA.
FRISCO — The English Channel is all but fished out, leaving fishermen scraping the bottom of the barrel in their quest for a commercial haul.
Sharks, rays, cod, haddock and many other species at the head of the food chain are at historic lows with many removed from the area completely, according to UK marine biologists, who analyzed catches over the past 90 years and found significant evidence of the practice of fishing down the food web.
“It is clear from our analyses that fishing pressure has caused significant changes to food webs of the English Channel over the past 90 years,” said Plymouth University Professor Jason Hall Spencer, with the School of Marine Science and Engineering, and the Marine Institute.
The report, published in the PLOS ONE journal, used catch statistics from the International Council for the Exploration of the Seas to establish a ‘mean trophic level’ for catches – an average for how far up the food chain the fish are located. Continue reading
Filed under: biodiversity, Environment, Marine biology, ocean conservation | Tagged: commercial fishing, English Channel, Environment, ocean conservation, overfishing | Leave a comment »