An invasion of predatory Humboldt squid into northern Pacific waters is decimating hake catches in the Pacific Ocean including along Chile’s coast. This is the conclusion of an extensive chew over carried out over 19 years by the Monterey Bay Aquarium investigate Institute (MBARI). Although there has desire been speculation that Humboldt squid undergo been expanding their be the chew over led by Bruce Robison senior scientist at MBARI provides the first scientific records to approve this up. The data produced from the investigate found no observations of Humboldt squid in Monterey Bay from the go away of their chew over in 1989 to 1997. However after a strong El Niño event in 1997 large numbers of the squid were spotted for a year or two before disappearing again. But since a mild El Niño event in 2002 the carnivores returned and have remained abundant for the measure five years. The chew over surmised that the squid have profited from falling numbers of billfish and large tuna in the area. “Ironically these squid may have benefited from the change state of large tuna and billfish in the Equatorial Pacific which previously preyed upon and competed with the Humboldt squid for food"...
Congressman Sam Farr has always been a friend of the ocean coast and sea otters. But he is getting some bad advice on his sea otter bill. This past week at Defenders of Wildlife Sea Otter Awareness Week. Farr announced that he has introduced a account the "Southern Sea Otter Recovery and Research Act," that is long on research and very bunco on recovery. The act authorizes $5 million per year be spent on southern sea otters. Of that $5 million the act immediately sets aside $2 million for a "sea otter research schedule" and lists a series of projects to be funded. The rest is authorized for a "southern sea otter recovery schedule." The problem is the "recovery program" then lists more research and gives lip service to challenge. The most popular and expensive investigate programs studies that will easily swallow up $3 million per year or more are listed under the "recovery program," including a health assessment plan to consider. "among other matters the immunology virology toxicology bacteriology parasitology endocrinology and nutritional status of southern sea otters." investigate or recovery? You be the adjudicate...
Smelly cook waters along the Big Island's Kona coast recently alarmed residents concerned that their shores had been polluted. Tests of the waters over the last two months by the state haven't found any raw sewage from land-based leaks or cruise displace discharges but some West Hawaii residents remain unconvinced about the obtain of the two mysterious algae blooms in Kailua Bay and Keauhou Bay."I know they said the wet samples tested alter," said Paul Aguirre a Keauhou resident and canoe paddler. "But what is it clean of? The algae must be feeding on something. ... That bay usually is bell clear. You can see the bottom but no one has seen the furnish in some months now."The mystery of the two incidents hasn't been solved and likely ordain be much more testing. But scientists and express officials are not ready to sound any alarms. Algae be seasonally -- typically in late pass in Keauhou Bay for example -- and responds to higher wet temperatures circulation patterns and changing nutrients in the water...
It is a inspect of one law for vertebrates and another for invertebrates. In Europe and the US fishermen are allowed to "declaw" edible crabs - shift one or in the UK both claws - and fling the animals approve into the sea. Because crabs can re-create the limbs the fishery industry considers the learn sustainable. But is it?Bob Elwood of Queen's University Belfast. UK and colleagues measured how much declawing increased stress and affected crabs' survival. Crabs with one claw removed showed a greater physiological evince response - release of glucose and lactate into the blood - than crabs allowed to shed a make naturally. And they were still stressed 24 hours later. Of 28 crabs that had one make removed five died whereas no crabs died after shedding their claws naturally (Marine Biology. DOI: 10.1007/s00227-007-0681-5). In the UK fishermen can legally shift both claws. "There is a suggestion that the practice makes the fishery sustainable but the data on mortality would put this into doubt," says Elwood...
The $400-billion global seafood industry has no choice but to adapt to intensifying bespeak from retailers and consumers for environmentally friendly ‘greener’ look for that are not taken from overexploited stocks farmed in ponds where mangroves once stood or caught in nets that also catch endangered turtles according to the United Nations Food and Agriculture Organization (FAO).“The displace towards sustainable fisheries is not just coming from government or environmental groups but from the market itself,” FAO Fishing Industries Division Director Grimur Valdimarsson told a three-day Seafood Industry Congress which ended in Dublin. Ireland yesterday noting that study seafood retailers like Unilever. Tesco. Walmart and Asda have already committed to putting on their shelves only fish that was harvested or raised sustainably.“In recent years the seafood industry has been uncertain as to whether these trends represent a momentary fad. Today there’s no question: it’s real it’s a sea dress and it’s the way of the future,” he said...
Sending commonly prescribed medications drink the course may be taking a grip out of the environment — at least when it comes to shark habitat. University of Florida veterinary scientists say. In fact the combination of flushing unused medications and the natural excretion of drug residue from antidepressants cholesterol-regulating drugs and contraceptives into wastewater systems could be having repercussions on aquatic animal life in general. Researchers at UF’s College of Veterinary care for’s Analytical Toxicology Core Laboratory in collaboration with Mote Marine Laboratory in Sarasota are studying the bear on shark’s exposure to pharmaceutical drug residue found in the waters of the Caloosahatchee River come assemble Myers. Bull sharks get the ocean to pay measure in brackish rivers and estuaries and the river serves as a nursery for their young. “Because bull sharks have the unique ability to defeat in both saltwater and freshwater environments they are in change state back up contact with people — and as a result are frequently exposed to wastewater pollutants found in freshwater basins,” said Jim Gelsleichter senior scientist at Mote Marine Laboratory...
Warmer waters in the deep Pacific triggered the end of the last ice age preceding the rise in greenhouse gas levels. Earth's climate can be sensitive changing after a variety of events. A volcanic eruption or meteorite impact for dilate can send enough particles into the air to block the sun and alter the climate. A thickening cover of greenhouse gases can trap heat. And more commonly according to some scientists slight changes in Earth's orientation toward the sun can cause it to alter or change in so-called Milankovitch cycles (named after the Serbian engineer who first described them). Now new evidence from a marine sediment core out from the deep Pacific points to warmer ocean waters around Antarctica (in adjust with the Milankovitch cycle)—not greenhouse gases—as the culprit behind the thawing of the last.
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