Tag: marine conservation

Pacific bluefin tuna may get endangered species status

A rampant black market and lax regulations are quickly leading to the demise of the eastern Atlantic bluefin tuna.
Overfishing is pushing bluefin tuna toward extinction.

Unsustainable fishing is pushing the species to the brink of oblivion

Staff Report

Federal regulators are one step closer to putting Pacific bluefin tuna on the endangered species list, as humankind’s insatiable appetite for resources drives the fish to the edge of extinction. The announcement by the National Marine Fisheries Service came in response to a petition filed by conservation groups, who say bluefin tuna populations have declined by about 97 percent since the advent of industrial fishing operations. Continue reading “Pacific bluefin tuna may get endangered species status”

Feds eye better control of ocean noise pollution

A draft plan to reduce noise pollution impacts on ocean life is open for public comment. @bberwyn photo.

NOAA releases draft strategy for public comment

Staff Report

With more than enough scientific evidence showing that noise pollution is harming marine life, the National Oceanic and Atmospheric Administration this week said it wants to do more to to try and address those impacts. Citing large increases in underwater noise generated by human activity, the agency posted a draft Ocean Noise Strategy Roadmap for managing noise impacts.

Last fall, a group of leading scientists called for global standards on noise pollution, singling out the impacts of seismic blasting in the quest for oil and gas as being especially harmful. Another scientific article advocated for quiet ocean zones that could serve as sanctuaries and reference areas to learn more about how noise affects marine life. Naval warfare training is another big concern, and federal court recently spelled out how military plans have failed to account for impacts to marine mammals. European scientists have also documented how seismic blasting causes displacement of fin whales more than 150 miles from the source of the noise. Continue reading “Feds eye better control of ocean noise pollution”

Study: Sharks feeding ability impaired by ocean acidification

Some sharks may lose their edge as the world’s oceans become more acidic in the next few decades. Photo courtesy Paula Whitfield, NOAA.

‘In warmer water, sharks are hungrier but with increased CO2 they won’t be able to find their food’

Staff Report

The effects of ocean acidification on shellfish are already well understood. There’s little doubt shell-forming species like oysters will face big challenges as the water chemistry changes. In some cases, more acidic water will simply corrode there shells.

But a new study found that some top ocean predators will also be affected. Ocean acidification will impair the ability of some sharks to hunt and find food, according to researchers at the University of Adelaide (Australia). Continue reading “Study: Sharks feeding ability impaired by ocean acidification”

Scientists search for ‘acoustic wilderness’ in the oceans

A supply ship lumbers through the biodiverse waters of the Antarctic Sound. @bberwyn photo.

Staff Report

Ocean scientists are advocating for the designation of quiet zones to help gain a better understanding of how noise pollution affects marine life.

Creating areas where ship traffic is limited would help researchers find the best way to protect marine life from harmful noise, according to a new study published in the journal  Marine Pollution Bulletin. By assigning zones through which ships cannot travel, researchers can help find the best way to protect marine life from harmful noise.

Almost all marine organisms, including mammals like whales and dolphins, fish and even invertebrates, use sound to find food, avoid predators, choose mates and navigate. Chronic noise from human activities such as shipping can have a big impact on these animals, since it interferes with their acoustic signaling. Increased background noise can mean animals are unable to hear important signals, and they tend to swim away from sources of noise, disrupting their normal behavior. Continue reading “Scientists search for ‘acoustic wilderness’ in the oceans”

Chile creates largest marine preserve in the Americas

 Photo courtesy Enric Sala/National Geographic
A new marine park off the coast of Chile will help protect important ocean resources. Photo courtesy Enric Sala/National Geographic.

‘A gift to the world …’

Staff Report

The creation of the world’s largest marine park in the Americas could help rebuild fish stocks off the coast of South America, ocean experts said this week, hailing Chile’s announcement that it will protect 297,518 square kilometers as a no-take zone. With the formation of Nazca-Desventuradas, Chile will now protect 12 percent of its marine surface area

 “Chile is one of the world’s primary fishing countries,” said Alex Muñoz, vice president for Oceana in Chile. “With the creation of this large marine park, Chile also becomes a world leader in marine conservation.” Continue reading “Chile creates largest marine preserve in the Americas”

NOAA to webcast deep-sea explorations

NOAA Ship Okeanos Explorer systematically explores the deep oceans of the world. (Credit: NOAA)
NOAA Ship Okeanos Explorer systematically explores the deep oceans of the world. (Credit: NOAA)

Research voyage begins Aug. 1; scientists say they expect to find new species

Staff Report

FRISCO — Ocean enthusiasts will have a chance to do some armchair exploring the next few months as NOAA scientists deploy unmanned submarines to explore protected areas in the central Pacific Ocean.

Starting Aug. 1, anyone with an internet connection can join the expedition in real time at oceanexplorer.noaa.gov. NOAA’s research ship, the Okeanos Explorer, will visit deeper waters in and around Papahānaumokuākea Marine National Monument in the Northwestern Hawaiian Islands, Johnston Atoll in the Pacific Remote Islands Marine National Monument, and the Hawaiian Islands Humpback Whale National Marine Sanctuary. Continue reading “NOAA to webcast deep-sea explorations”

Is it time to rethink governance of high-seas fisheries?

‘We should use international waters as the world’s fish bank …’

Shrimp boats in Apalachicola, Florida. bberwyn photo.

Staff Report

FRISCO — Growing exploitation of open-ocean resources will soon require  the world to rethink the way it manages the high seas, including a potential ban on commercial fishing that would help distribute fisheries income more equitably among the world’s maritime nations, according to research from the University of British Columbia.

After studying fisheries data, the researchers concluded that maintaining or boosting fish stocks in the high seas would help boost coastal fisheries. If increased spillover of fish stocks from protected international waters were to boost coastal catches by 18 per cent, current global catches would be maintained. When the researchers modeled less conservative estimates of stock spillover, catches in coastal waters surpassed current global levels. Continue reading “Is it time to rethink governance of high-seas fisheries?”