Oceans: USGS study helps inform rigs-to-reef plans

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A school of fish gather around the base of an offshore drill rig. Photo courtesy BSEE.

Few contaminants found in fish living around offshore drilling rigs

By Summit Voice

SUMMIT COUNTY — The idea of turning old offshore drilling rigs into artificial reefs has been floating around for a while, and USGS scientists recently reported that there’s no sign that fish living near the rigs are contaminated by oil from the drilling operations.

To help provide some baseline data for “rigs-to-reef” proposals in California, the agency compared contaminant levels in fish living around oil platforms with fish from nearby natural sites off the coast of California in the Santa Barbara Channel and the San Pedro Basin. The new and recent USGS reports are available online.

“As part of this study, we developed methods capable of detecting the extremely low levels of contaminants that we anticipated in these ocean fishes, especially since they avoid natural oil seeps,” said USGS scientist Robert Gale. “These results will assist decision-makers in helping to protect the environment off the coast of California.” (more…)

Study: comprehensive ocean monitoring network needed

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Scientists say managing ocean resources requires better monitoring. Bob Berwyn photo.

‘To date, there have been few attempts to track biodiversity broadly in the ocean’

By Summit Voice

SUMMIT COUNTY — With the world’s oceans facing serious global warming threats, U.S. researchers say it’s high time to establish a national effort to monitor marine biodiversity.

Humans depend on the ocean for food, medicine, transportation and recreation, yet little is known about how these vast ecosystems spanning 70 percent of the Earth’s surface are functioning and changing. (more…)

Circle of life: Marauding deep-sea monkfish prey on shallow-diving dovekies when the timing is right

Shallow-diving dovekies are opportunistically eaten by deep-sea dwelling monkfish.

Shallow-diving dovekies are opportunistically eaten by deep-sea dwelling monkfish. Photo courtesy Chris Melrose, NEFSC/NOAA.

Research aims to learn more about bird-eating fish

By Summit Voice

SUMMIT COUNTY — Everybody knows it’s a dog-eat-dog world out there, but when cute little seabirds start showing up in the stomachs of bottom-dwelling, deep-sea fish, biologists get curious.

So when USGS biologist Matthew Perry heard that New England fishermen were finding tiny dovekies inside monkfish, he decided to investigate how this previously unknown link in the ocean foodchain works.

“I was studying long-tailed ducks and thought, to avoid being eaten, these birds fly 30 to 50 miles to Nantucket Sound each night and return to the ocean in the morning,” said Perry, a research wildlife biologist at the USGS Patuxtent Wildlife Research Center in Maryland. “People ask why don’t dovekies fly to Nantucket Sound at night like the long-tailed ducks to avoid goosefish?  My explanation is that dovekies have small wings and can’t make the routine flight.” (more…)

Environment: Is the Gulf of Mexico resilient to oil spills?

Research suggests role of bacteria has been underestimated

One of the impacted corals with attached brittle starfish. Although the orange tips on some branches of the coral is the color of living tissue, it is unlikely that any living tissue remains on this animal. PHOTO COURTESY Lophelia II 2010, NOAA OER and BOEMR.

Some of oil from the Deepwater Horizon oil disaster coated and killed deep-sea corals in the Gulf of Mexico, but a large quantity may have been consumed by oil-eating bacteria.  Photo courtesy Lophelia II 2010, NOAA OER and BOEMR.

By Summit Voice

FRISCO — Nearly three years after the Deepwater Horizon drill rig exploded and the busted Macondo Well spewed millions of gallons of crude into the Gulf of Mexico, scientists are still trying to figure out to what happened to all the oil.

Only a tiny amount was captured or burned at the surface, and vast quantity — nobody knows exactly how much — was “dispersed” with chemicals injected directly into the stream of oil streaming out of the broken pipes, but a surprisingly large percentage of the oil may have been broken down by microbes. (more…)

Interpol launches major push to curb pirate fishing

Better monitoring and enforcement needed, conservation groups say

Illegal fishing threatens the viability of legal fleets. Bob Berwyn photo.

Illegal fishing threatens the viability of legal fleets. Bob Berwyn photo.

By Summit Voice

SUMMIT COUNTY — With pirate fishing continuing to decimate global fish stocks, Interpol’s Environmental Crime Programme, with support from The Pew Charitable Trusts, the Norwegian Ministry of Foreign Affairs and the Norwegian Agency for Development Cooperation, is launching a major investigation aimed at curbing illegal fishing.

Illegal, unregulated and unreported fishing costs the global economy up to $23 billion a year, according to a study published in 2009 in the peer-reviewed journal PLoS One. Coastal communities, legal commercial fishing interests and the marine environment pay the price when illegal fishers exploit weak laws, poor information-sharing across jurisdictions and a shortage of monitoring and enforcement resources, particularly in developing countries. (more…)

Report highlights problems of unreported commercial fishing

Chinese fleet takes 12 times more fish than it reports

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A new analysis shows where China catches its fish.

By Summit Voice

SUMMIT COUNTY — Illegal fishing is a persistent problem, but it appears that China has elevated it to a new level, catching about 12 times more fish than it formally reports to the United Nation’s Food and Agriculture Organization, an international agency that keeps track of global fisheries catches.

Overall, Chinese fishing boats catch about US$11.5 billion worth of fish from beyond their country’s own waters each year according to a new study led by fisheries scientists at the University of British Columbia.

“China hasn’t been forthcoming about its fisheries catches,” said Dirk Zeller, a senior research fellow with UBC’s Sea Around Us Project and the study’s co-author. “While not reporting catches doesn’t necessarily mean the fishing is illegal … we simply don’t know for sure as this information just isn’t available,” Zeller said, explaining that there could be agreements between China and other countries that allow unreported fishing. (more…)

Biodiversity: Rare sea slug poised for a comeback

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A rare sea slug may be poised to return to California coastal waters. Photo courtesy Kenneth Kopp.

Marine researchers in California tracking colorful ocean critter

By Summit Voice

SUMMIT COUNTY — Four decades after pollution and over-collecting all but wiped out a colorful sea slug in California coastal water, marine researchers at UC Santa Barbara say the species could be staging a comeback.

The vivid blue and gold nudibranch Felimare californiensis was discovered by UC zoologists in 1901, making it a favorite of of UC marine scientists and students. But while it held a special place in their hearts, it lost its place in local waters, which once included La Jolla, Corona del Mar, Malibu, and Santa Barbara, as well as all but the two westernmost Channel Islands. (more…)

Biodiversity: More protection for manta rays?

CITES considering new regulations on international trade

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A manta ray at a coral “cleaning station.” Photo via Wikimedia and the Creative Commons.

By Summit Voice

FRISCO — With many hark and ray species threatened with extinction as a result of directed fishing and unintentional fisheries bycatch, the United States, Brazil, Ecuador, and more than 30 other countries have proposed to list several shark and ray species under the Convention on International Trade in Endangered Species.

CITES is meeting this week in Bangkok to consider global conservation policy and will consider regulations on international trade for the oceanic whitetip shark, porbeagle shark, three species of hammerhead shark, and two species of manta ray. Another species, the freshwater sawfish, is proposed for up-listing to a status that prohibits commercial international trade completely.

Pressure on the species is driven by the high demand for their fins, meat and gill rakers — used in shark fin soup and other dishes.

Conservation groups acknowledged U.S. leadership on the issue, explaining that many sharks and rays need more protection to survive.

“We commend the leadership of the United States and other government sponsors in requesting these essential measures to control and monitor international trade in these shark and ray species, and we implore other governments to vote in their favor,” said Dr. Cristián Samper, president and CEO of the Wildlife Conservation Society. “These taxa have suffered alarming declines from unregulated or insufficiently regulated fisheries and are in high demand for international commercial markets. There is a desperate need for trade controls to manage that demand and its impact on these vulnerable fishes.”

The proposals under consideration will significantly increase the number of sharks and rays that are regulated under CITES: currently, only a few of shark and ray species—the whale shark, basking shark, great white shark, and seven sawfishes—are listed. In order to be adopted, the proposals need approval from two-thirds of the governments voting.

“CITES listings for these species would help put controls on an international trade that threatens many shark species and the livelihoods that depend on them,” said Dr. Elizabeth Bennett, vice president of WCS’s Species Program and leader of the WCS CITES delegation.

Unlike many bony fish species, most cartilaginous fishes are long-lived, late-to-mature, and produce few young, making them vulnerable to over-fishing and their populations slow to recover once depleted.

“Demand for shark fins—the prime ingredient in shark fin soup— and gill rakers from manta rays is driving legal and illegal shark and ray fishing beyond what is sustainable, with estimates of tens of millions of animals killed annually to supply these trades, “said Dr. Rachel Graham, director of WCS’s Gulf and Caribbean Sharks and Rays Program. “Listing under CITES will provide a much-needed framework to monitor and regulate these heavily traded and highly sought-after species.”

WCS is committed to saving sharks and rays as part of a global commitment to promote recovery of depleted and threatened populations of marine species, halt the decline of fragile marine ecosystems, and improve the livelihoods and resilience of coastal communities throughout the world’s oceans.

 

California Coastal Commission not thrilled with navy plans

Impacts to marine mammals at issue in continued tussle over naval training exercises and use of sonar

Naval training exercises off the coast of California could pose a threat to endangered marine mammals.

Naval training exercises off the coast of California could pose a threat to endangered marine mammals. Photo courtesy NOAA.

By Summit Voice

FRISCO — A battle over the impacts of military training exercises to marine life took another turn this week as the California Coastal Commission rejected a U.S. Navy proposal for sonar and explosives training.

According to conservation advocates, the military maneuvers would threaten marine animals in Southern California, including endangered blue whales. The war training exercises would have killed 130 marine mammals and caused hearing loss in about 1,600 animals, according to Navy estimates. (more…)

New species found in threatened New Guinea lagoon

Crinoid on the reef of Batu Moncho Island, Indonesia.

Crinoid on the reef of Batu Moncho Island, Indonesia. Photo courtesy Alexander Vasenin via Wikipedia and the Creative Commons.

Science team explores little-known reef ecosystem

By Summit Voice

SUMMIT COUNTY — An idyllic tropical lagoon threatened by pollution from a tuna cannery is a Pacific Ocean biodiversity hotspot, according to researchers from Nova Southeastern University, who recently surveyed the ocean off Papua New Guinea.

The study found numerous new species of marine life, including sea slugs, feather stars  and amphipods. There was more variety of these indicator species found than there is along the entire length of Australia’s 1,600-mile Great Barrier Reef, said Jim Thomas, a researcher at Nova Southeastern University’s National Coral Reef Institute in Hollywood, Florida.

“In the Madang Lagoon, we went a half mile out off the leading edge of the active Australian Plate and were in 6,000 meters of water,” said Thomas, Ph.D., a researcher at Nova Southeastern University’s National Coral Reef Institute in Hollywood, Fla.

“It was once believed there were no reefs on the north coast of Papua New Guinea since there were no shallow bays and lagoons typical of most coral reef environments. But there was lots of biodiversity to be found.” (more…)

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