Oysters & Fortunetellers


Where the gringa lives in the gulf coast of Texas, oyster farming is big business. The gringa’s farming experience is limited to my father’s cattle ranch and my own egg farming. Is that how oyster farming works? Do you just leave the little guys alone most of the time to do what oysters do? Toss them a bit of feed, protect them from predators, stuff like that? Well, actually oyster farming has gone hi-tech. For young people who are interested in a beach bum lifestyle with the edge of technology, oyster farming or working with the technology related to the industry may be your thing if you love science as much as beach bumming.

Oysters don’t need their human overseers to bring them a bale of hay or toss out some nutrient enriched scratch. They are living filters that live on the bottom of a bay. Oyster farmers really don’t have that much to do, it would seem, unless it is harvest time. Sounds like the perfect beach bum job.

However, there is one thing that can happen that can interrupt an oyster farmer’s hiatus between harvests. If storm clouds gather, oyster farmers have to get out of their hammocks, put away the surfboard and forego the margaritas and head out for some serious relocating work in the estuaries.

You see, as bottom feeding filters, rain in this polluted day and age can be deadly for oysters. And even if contaminants in run off don’t kill the slimy, little buggers they could, in turn, kill a human if eaten. A local thunderstorm with a heavy downpour means one of two things:

  • Completely relocate their stock, or,
  • Quarantine the area and delay harvest until it is safe.

Now, even if an oyster farmer was willing to relocate their oysters, often weather conditions can change rapidly and unexpectedly in coastal regions.  Usually an oyster farmer simply doesn’t have enough time to respond. So, the oysters bide the storm and everyone hopes for the best. But considering how heavily polluted most of the soil is in populated areas around the world, it’s usually not good news when it’s all over.

The gringa doesn’t have the numbers for industry loss or farm closures in the Gulf of Mexico area I call home. However, I can tell you about what’s been going on in Tasmania. Since 2013 industry research has recorded a loss of over $4.3 million (Australian currency!) for Tasmanian oyster farmers due to contamination related farm closures, caused by pollutants in rainfall water runoff that entered estuaries.  This sounds awful, right? Well, take heart, dear readers. There is good news for Tasmanians as well as oyster farmers everywhere thanks to an agriculture technology start-up company, The Yield.

The Yield has designed a system of sensors that were tested in 14 Tasmanian oyster farm estuaries. This comprised about 80% of the entire oyster industry for the state. The technology measured:

  • Water depth
  • Salinity
  • Temperature
  • Barometric pressure

Oyster farmers use their smartphone, or other device, to access the handy little app that is updated every five minutes with new data about their squishy, little, hard-shelled babies. Access is also available to food safety regulators so everybody that matters is in the loop.

But the gringa wants to know if this has made oyster farming better. I mean, it’s always fun to have new gadgets but where business is concerned, is there a point to the expense? Here are the benefits of this new technology:

  • Reduces paperwork between farmers & food service regulators.
  • Food quality and safety has improved.
  • Accurate measurements has resulted in fewer farm closures.
  • Fewer farm closures has resulted in higher production, yields and profits.

Well, it looks like this technology is worth the investment for oyster farmers. It also looks like the investment of time and effort of scientists and meteorologists for more than a century was also a worthy investment. That is the backbone of the information that went into designing this system. If you have a habit or hobby of recording weather related “stuff”, who knows, one day what you may consider a hobby or pre-occupation could change the world! More than a hundred years worth of weather and tidal related data helped developers understand weather and tidal patterns, how they changed with the seasons, and how this would affect the performance of the technology to predict weather events. So, basically, Tasmania’s oyster farmers are more successful because of digital fortunetellers.

Sources:

www.techrepublic.com

www.theyield.com

oysterstasmania.org

Image Credit: oysterstasmania.org

 

 

Jason & the Argonauts… and NASA, Too


Who remembers the story of Jason and the Argonauts? You know, that ancient Greek myth of seafaring Jason and his crew, the Argonauts, who embarked upon the high seas in search of the Golden Fleece. Well, Jason is back! And this time he is orbiting Earth’s high seas and measuring their levels.

SpaceX may have had a bitter disappointment a couple of days ago, but the gringa prefers to focus on their accomplishment that went unnoticed. Sunday, a SpaceX Falcon 9 rocket launched Jason into outerspace, well, the Jason-3 spacecraft, that is. Jason-3 is the product of NASA collaboration with France’s CNES and Europe’s Organisation for the Exploitation of Meteorological Satellites. Jason-3 is on a mission to track the rise of sea levels all around the world.

The goal of this intelligence gathering is to improve forecasting of Earth’s weather, climate and oceans. The data will also help scientists expand their knowledge on the ocean’s role in the world’s climate. Jason-3 will be working in tandem with Jason-2 that is already in a locked in orbit. Jason-2 has been in operation since 2008. Jason-3 will officially clock in and report for duty after a six-month phase of calibration and system checks. Once on duty, every ten days Jason-3 will report precise measurements of the height of 95% of Earth’s ice free oceans, this is called ocean-surface topography.

The Jason duo measurements will provide information about coastal tides, shallow seas, open ocean tides, currents and eddies. This type of topography also tells scientists how much energy from the sun is stored within the ocean which is the key to understanding how sea level rise affects climate change.

Jason’s official mission began in 1992 along with Topex/Poseidon. Since then scientists have discovered that the world’s seas are rising, on average, about 3 millimeters every year. As humans continue to make industry and lifestyle decisions that cause global warming, mankind is actually reshaping the surface of our home planet.

The gringa wants to know exactly what kind of shape we are getting ourselves into. What the heck is going to happen if sea levels keep rising?  But first, the gringa needs to know how this happens. What I’ve found out is:

  • Climate Change Causes Thermal Expansion: Water heats up, it expands, therefore it occupies more space
  • Glacial & Polar Ice Cap Melts: These natural ice formations experience a natural summer cycle of ice melt that is usually replaced in winter by evaporated seawater that creates snow. Climate change creates consistently warmer temperatures. This creates warmer Summers where more ice than usual melts. Summer usually lasts longer, Spring arrives earlier, thus winter is shorter and unable to keep up with replacing all the extra ice that is lost. Thus, all of this extra melt runoff causes sea levels to rise.
  • Greenland & West Antarctica: Climate change creates warmer temperatures that is causing the accelerated melt of massive ice sheets in these critical regions. Meltwater & seawater may also be seeping beneath these ice sheets which is causing them to slip out to sea quicker. Warmer sea temperatures are compromising the stability of underwater ice shelves causing them to weaken and break. All this contributes to rising sea levels.

Here are some of the things that happen as sea levels rise and the geography and coastlines of Earth transform:

  • Coastal habitat erosion
  • Coastal wetlands flooding
  • Contamination of coastal aquifers and agricultural land
  • Habitat loss for coastal fish, birds and plants
  • Larger, more powerful storms
  • Vulnerability to flooding for coastal dwelling people
  • Eventual mass migration of island and coastal dwelling people

The gringa wants to know, “What can we do?” Scientists seem to think that it’s a done deal with a relatively slow timeline (depending on how you look at it). So, mankind has until about the year 2100 to relocate folks from the future swamplands of the world’s coastlines. That’s the year they predict the world’s oceans could be about six feet higher than they are now, or possibly even 20 feet higher if the Greenland ice sheet bites the dust.

The gringa, however, has a plan. I’m near enough the Texas Gulf Coast that, by the time I’m in my golden years, my low rent apartment could be prime ocean front property. Sweet. My one hour drive to the beach could become a ten minute stroll when I’m too darn old to drive. So, over the next couple of decades I’ll be stocking up on fishing supplies and sunblock. I tell ya, timing is everything!

If you want to know more about Jason’s mission and follow along with the tracking of the seas, visit www.nesdis.noaa.gov/jason-3.

Source & Photo Credit: http://www.nasa.gov