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Scientists Identify Core Skin Bacterial Community in Humpback Whales

By Guest PostApril 2, 2014Naturealaska, american samoa, amy apprill, bering sea, bugs, caroline albertin, clifton ragsdale, core, eleni panagopoulou, hawaii, hox genes, Humpback whales, mammals, marathousa, michael labarbera, michael moore, nicholas thompson, north atlantic, north pacific, oceanographic institution, octopus bimaculoides, octopus genome, South Pacific, tracy mincer, two spot octopus, vangelis tourloukis, whoi, woods hole

Results Could Aid Future Efforts to Monitor Health

Bacteria are invisible to the naked eye, but they reside on nearly every surface humans encounter—including the skin. Uncovering the role these microorganisms play in human health is a major focus of research in skin microbiology, but little is known about the identity or function of skin bacteria in other mammals.

In a paper published in the open access journal PLOS ONE, researchers at Woods Hole Oceanographic Institution (WHOI) and colleagues identified a core skin bacterial community that humpback whales share across populations, which could point to a way to assess the overall health of these endangered marine mammals. (more…)

Is There Really a Giant Island of Plastic in the Pacific Ocean?

By Guest PostNovember 29, 2013Environmentfloating garbage pools, islands of debris, north pacific, pacific garbage patch, plastic garbage, plastic waste

Make no mistake about it: plastic waste is a huge problem and one that has been posing a very serious threat to our oceans for decades. What’s worse is that there hasn’t been any real strides made into solving the problem; while recycling and better waste disposal are on the up, so is our rate of plastic consumption. Around the world, we still only recycle around 1% of our unwanted plastic – an alarming amount of the remained ends up in landfill, and a depressing 10% of it ends up in the world’s oceans. (more…)

Could a Hurricane Ever Strike Southern California?

By Guest PostOctober 19, 2012Environmentalaska current, america, annual, atlantic, bill patzert, california, california current, californians, climatologist, current flow, drought, earthquake, eastern pacific, el niño, fire, flood, four seasons, fuel, gale force, godzilla, goes 9, golden state, gulf coaster, hurricane, hurricane capital, hurricane john, hurricane linda, Japan, kathleen, maximum temperature, mother nature, noaa, nora, north pacific, northern baja california, northern hemisphere, old adage, pacific decadal oscillation, pacific hurricanes, pacific ocean, pdo, quakes, rain, rainfall, rancho cucamonga, ropical storm, santa ana, satellite, southern california, southern californians, summer, thunderstorm, tropical cyclone, united states, us east, water budget, wind

There’s an old adage (with several variations) that California has four seasons: earthquake, fire, flood and drought. While Californians happily cede the title of Hurricane Capital of America to U.S. East and Gulf coasters, every once in a while, Mother Nature sends a reminder to Southern Californians that they are not completely immune to the whims of tropical cyclones. Typically, this takes the form of rainfall from the remnants of a tropical cyclone in the eastern Pacific, as happened recently when the remnants of Hurricane John brought rain and thunderstorms to parts of Southern California. But could a hurricane ever make landfall in Southern California?

The answer, as it turns out, is yes, and no. While there has never been a documented case of a hurricane making landfall in California, the Golden State has had its share of run-ins and close calls with tropical cyclones. In fact, California has been affected by at least a few tropical cyclones in every decade since 1900. Over that timeframe, three of those storms brought gale-force winds to California: an unnamed California tropical storm in 1939, Kathleen in 1976 and Nora in 1997. But the primary threat from California tropical cyclones isn’t winds or storm surge. It’s rainfall — sometimes torrential — which has led to flooding, damage and, occasionally, casualties. (more…)

Long Menopause Allows Killer Whales to Care for Adult Sons

By Guest PostSeptember 17, 2012Natureadult son, canada, center, coast, dan franks, darren croft, david ellifrit, emma foster, exeter, female, grandmother hypothesis, great mystery, killer whale, longest menopause, mother, Nature, non human, north pacific, ocean, orcinus orca, post reproductive, son, species, survival rate, university, usa, whale research

Scientists have found the answer to why female killer whales have the longest menopause of any non-human species – to care for their adult sons.

Led by the Universities of Exeter and York and published in the journal Science the research shows that, for a male over 30, the death of his mother means an almost 14-fold-increase in the likelihood of his death within the following year.

The reason for the menopause remains one of nature’s great mysteries and very few species have a prolonged period of their lifespan when they no longer reproduce, as in humans. However, female killer whales stop reproducing in their 30s-40s, but can survive into their 90s. While different theories have been put forward for the evolution of menopause in humans, including the well-established ‘grandmother’ hypothesis, there has been no definitive answer to why females of a small number of other species, including killer whales, also stop reproducing part-way through their lives. (more…)

Ocean’s Color Affects Hurricane Paths

By Guest PostAugust 14, 20101 commentEnvironmentanand gnanadesikan, biological desert, chlorophyll, color, color of ocean, color-depleted zone, ecosystem, fluid dynamics laboratory, hurricanes, noaa, north pacific, ocean, phytoplankton, phytoplankton population, subtropical gyre

WASHINGTON — A change in the color of ocean waters could have a drastic effect on the prevalence of hurricanes, new research indicates. In a simulation of such a change in one region of the North Pacific, the study finds that hurricane formation decreases by 70 percent. That would be a big drop for a region that accounts for more than half the world’s reported hurricane-force winds.

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Tag Archives: north pacific

Scientists Identify Core Skin Bacterial Community in Humpback Whales

Is There Really a Giant Island of Plastic in the Pacific Ocean?

Could a Hurricane Ever Strike Southern California?

Long Menopause Allows Killer Whales to Care for Adult Sons

Ocean’s Color Affects Hurricane Paths