Harlequinmania

Toxic contamination from pesticides, the burning of fossil fuels, agriculture, industrial operations and other sources are a continuing concern in US national parks of the West, two new studies confirm. View the full article

Discoveries about tropical coral reefs are expected to be invaluable in efforts to restore the corals, which are succumbing to bleaching and other diseases at an unprecedented rate as ocean temperatures rise worldwide. View the full article

People who fish for a living pursue top profits, not necessarily top predators, according to global catch and economic data from the last 55 years. View the full article

People who fish for a living pursue top profits, not necessarily top predators, according to global catch and economic data from the last 55 years. View the full article

Even in the dark abyss of the deep ocean animal communities can undergo rapid, widespread and radical changes. Scientists are monitoring these changes and understanding the mechanisms responsible. View the full article

A critical minimum for Arctic sea ice can also be expected for late summer 2010, according to new projections by researchers in Germany. View the full article

Even in the dark abyss of the deep ocean animal communities can undergo rapid, widespread and radical changes. Scientists are monitoring these changes and understanding the mechanisms responsible. View the full article

For almost three decades, oceanographers have been puzzled by the ability of microscopic algae to grow in mid-ocean areas where there is very little nitrate, an essential algal nutrient. In a new study, researchers show that mid-ocean algae obtain nitrate from deep water, as much as 250 meters below the surface. This finding will help scientists predict how open-ocean ecosystems could respond to global warming. View the full article

Until recently, the disastrous scale of the threat posed by salmon farms to the fauna and National Park of the Aysén region of southern Chile was entirely unknown. The unexpected discovery was made by researchers who were studying acoustic communication among the native whales in the region. The researchers not only discovered that the salmon industry is rapidly spreading to the hitherto largely unspoiled south of the region; they also documented the previously unknown threat to the region's native sea lions. View the full article

Until recently, the disastrous scale of the threat posed by salmon farms to the fauna and National Park of the Aysén region of southern Chile was entirely unknown. The unexpected discovery was made by researchers who were studying acoustic communication among the native whales in the region. The researchers not only discovered that the salmon industry is rapidly spreading to the hitherto largely unspoiled south of the region; they also documented the previously unknown threat to the region's native sea lions. View the full article

The limited immune response in the eyes of freshwater fishes has created a great home for parasites, according to new research. The study provides a lens into the evolutionary world of the larval flukes that parasitize Canadian fish. View the full article

The limited immune response in the eyes of freshwater fishes has created a great home for parasites, according to new research. The study provides a lens into the evolutionary world of the larval flukes that parasitize Canadian fish. View the full article

Tracking fish across Alaska's vast continental shelves can present a challenge to any scientist studying Alaska's seas. Researchers have successfully tested a possible solution in the form of underwater gliders. View the full article

Tracking fish across Alaska's vast continental shelves can present a challenge to any scientist studying Alaska's seas. Researchers have successfully tested a possible solution in the form of underwater gliders. View the full article

Male fish are taking longer to be "feminized" by chemical contaminants that act as hormone disrupters in Colorado's Boulder Creek following the upgrade of a wastewater treatment plant in Boulder in 2008, according to a new study. View the full article

Computer simulations show how oceanic stirring and mixing influence the formation and dynamics of plankton patches in the upper ocean. Researchers applied the methods of synchronization theory -- previously used to explain such phenomena as the coordinated flashing of fireflies along whole riverbanks. Initially they studied the balance between localized increases in phytoplankton populations and small-scale mixing, such as that due to breaking waves, in creating patches. Patchiness was found to persist despite the mixing which might be expected to smooth out the patches by blending them together. View the full article

The heart and lungs of the planet, the world's oceans, shows worrying signs of ill health, concludes the first comprehensive synthesis of recent research into the effects of climate change on oceans. View the full article

The heart and lungs of the planet, the world's oceans, shows worrying signs of ill health, concludes the first comprehensive synthesis of recent research into the effects of climate change on oceans. View the full article

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Your skin tone and the amount of sunshine you receive -- in addition to what foods you eat -- all can influence the amount of vitamin D that your body has on hand for optimum health. Scientists have now developed a preliminary model that predicts an individual's vitamin D requirements. View the full article

A species of damselfish, Stegastes nigricans, selectively weed the algal gardens on which they feed in order to encourage the growth of their preferred algal species of Polysiphonia and suppress the growth of less palatable algae. In a new study, researchers investigate the feeding preferences of damselfish and explore their diverse gardening systems across the Indo-West Pacific region. View the full article

A species of damselfish, Stegastes nigricans, selectively weed the algal gardens on which they feed in order to encourage the growth of their preferred algal species of Polysiphonia and suppress the growth of less palatable algae. In a new study, researchers investigate the feeding preferences of damselfish and explore their diverse gardening systems across the Indo-West Pacific region. View the full article

Conservation efforts aimed at protecting endangered Caribbean corals may be overlooking regions where corals are best equipped to evolve in response to global warming and other climate challenges. View the full article

Numerous studies are documenting the growing effects of climate change, carbon dioxide, pollution and other human-related phenomena on the world's oceans. But most of those have studied single, isolated sources of pollution and other influences. Now, a marine geochemist has published a report that evaluates the total impact of such factors on the ocean and considers what the future might hold. View the full article

A team of oceanographers has outlined a polar ocean observation strategy they say will revolutionize scientists' understanding of marine ecosystem response to climate change. The approach, which calls for the use of a suite of automated technologies that complement traditional data collection, could serve as a model for marine ecosystems worldwide and help form the foundation for a comprehensive polar ocean observation system. View the full article