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Tag: "marine" at biology news

Marine 'dead zone' off Oregon is spreading

...suffocating a wide range of fish, crabs, and other marine life. "There is a huge pool of low-oxygen water o...as 0.46 milliliters per liter," said Francis Chan, marine ecologist in the OSU Department of Zoology and with the Partnership for Interdisciplinary Studies of...

Iron critical to ocean productivity, carbon uptake

...zation of phytoplankton is also a key to a healthy marine food chain. Both Behrenfeld and Peter Strutton, an assistant professor of oceanography at OSU and a co-author on the Nature paper, have been involved in experiments in which iron is introduced into the ocean in an attempt to boost productivity. Thos...

Antarctic Treaty Meeting moves to protect frozen continent from non-native species

...k of non-native species being introduced into both marine and terrestrial ecosystems in Antarctica. To protect the marine environment, the meeting adopted new practical guidelines for ballast water exchange by ships operat...

Scientists find Antarctic ozone hole to recover later than expected

... cancer, genetic damage, eye damage and can impact marine life. "My job is to track ozone-depleting chlorofluorocarbons around the globe on a weekly basis," said Steven Montzka, a research chemist in the Global Monitoring Division at NOAA's Earth Systems Research Laboratory in Boulder, and co-author of the...

Ocean acidification threatens cold-water coral ecosystems

... in another way. Lead researcher John Guinotte, a marine biogeographer at Marine Conservation Biology Insti...te ion concentration in seawater. Corals and other marine organisms (e.g. some species of plankton and mollusks) use carbonate ions to build their skeletons o...

Even fish don't swim well when they're young!

...arvae are the most critical life history stage. In marine fish more than 99% of the mortality occurs in the larval stage so anything that might explain what holds them back is useful". Müller will present her research on Monday 3rd April, at the Society for Experimental Biology's Annual Main Meeting in Cant...

Record bonefish

...alez," said Dr. Jerry Ault, associate professor of marine biology and fisheries at the UM Rosenstiel School....rofit organization composed of sport fishermen and marine researchers with a worldwide mission of working together to learn how to best enhance their namesake...

The critical importance of mangroves to ocean life

...al cycles it is crucial to quantify the sources of marine dissolved organic carbon," Dittmar writes. "Here we show that mangroves play an unexpected role in the global carbon cycle." Dittmar reports that the mangrove root system slows carbon-rich leaf litter running from continental land and allows it to s...

Alaska seal pup diet may hold key to decline of population

...ld tie the declining population of seals and other marine mammals with the change in availability of seal pr...rger effort to find out why harbor seals and other marine mammals are disappearing from the chilly waters off the Alaskan coast. The population decline, which...

Salmon go veggie to save wild fish stocks

...shmeal and oil derived from processing wild-caught marine fish is unsustainable in the long term. This is du... cost effective too". Using canola oil instead of marine fish oil (e.g. anchovy oil) in fish feed will also reduce the accumulation of contaminants in salmon...

Vegetables inhibit growth of prostate cancer in mice with human tumors

As long-lived predators at the top of the marine food chain, albatrosses accumulate toxic contamina...d these compounds continue to be released into the marine environment. "The increases we saw compared with ten years ago probably reflect the ongoing use of...

Albatross study shows regional differences in ocean contamination

As long-lived predators at the top of the marine food chain, albatrosses accumulate toxic contamina...d these compounds continue to be released into the marine environment. "The increases we saw compared with ten years ago probably reflect the ongoing use of...

Fish on acid: Hagfish cope with high levels of CO2

...reater capacity for rapid pH compensation than any marine or fresh water fish studied to date", explains Baker. Just as cold-blooded animals have an equal body temperature to their surrounding environment, the Hagfish has the same concentration of salt in its blood as the surrounding seawater. This trait p...

Underwater listening devices yield discoveries about endangered large whales

...dge of the movements and calling behavior of these marine mammals. The findings have been particularly important in parts of the world, such as the seas near Alaska, where standard visual surveys are often hampered by darkness and bad weather. The article, by Sue E. Moore of the National Oceanic and Atmosp...

Research tracks whales by listening to sounds

... OSU researchers begin picking up sounds of ships, marine landslides ?and whales. An engineer at the center, Haru Matsumoto, then developed an autonomous hydrophone that can be deployed independently and Mellinger's colleagues placed seven of these instruments in the Gulf of Alaska about five years ago. The...

'Biobullets' fight harmful mussels

...ne, "biobullets" pose little or no threat to other marine animals, the researchers say, because they rapidly degrade and disperse in water. Since their accidental introduction from Eastern Europe into the Great Lakes in the late 1980s, zebra mussels have become notorious aquatic pests, fouling water intake...

Vital ocean prey play active role in environment

...t because they are vital prey for fish, birds, and marine mammals, yet they are vulnerable to fishing pressure and environmental change. In the February 2006 issue of BioScience, the monthly journal of the American Institute of Biological Sciences, Stephen Nicol of the Australian Antarctic Division presents...

Scientist warns of threat to last stronghold of endangered turtle

...acking work will feed directly into strategies for marine protected areas in Gabon and farther afield and more sustainable fisheries. We are just beginning to understand the importance of the leatherbacks of West Africa as a global stronghold but we need to know where they live to protect them." The track...

Yale researchers find environmental toxins disruptive to hearing in mammals

...ence."These data also indicate that the hearing in marine and other mammals could be affected by environment...known to damage the immune and hormonal systems of marine mammals. In this study on guinea pigs, Santos-Sacchi tested whether TBT or salicylate, which is a ...

'Dead zone' summer killed billions of ocean state mussels

... Altieri conducted the surveys with Jon Witman, a marine ecologist and an associate professor in the Department of Ecology and Evolutionary Biology. In a report on their research, published in Ecology, Altieri and Witman show that mussel die-off had a lasting effect. In fall 2002, one year after the die-o...

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