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Posts Tagged ‘Yorktown

“Sharks. I never saw that coming.”*…

While many land-based predators (like wolves) avoid cities, scientists tracking sharks in Florida’s Biscayne Bay found the fish spent just as much time near Miami as away from it. Warren Cornwall explains…

Certain kinds of wildlife are notorious for thriving in urban settings. Think rats, rock pigeons and even the occasional coyote. Now, Florida scientists have added another creature to the list: sharks.

While many large predators show little appetite for city living, an intriguing project tracking the movements of sharks as fearsome as hammerheads revealed the fish are unexpectedly tolerant of life up close to the 6 million humans of greater Miami.

“We were surprised to find that the sharks we tracked spent so much time near the lights and sounds of the busy city, often close to shore, no matter the time of day,” said Neil Hammerschlag, director of the University of Miami’s Shark Research and Conservation Program.

Ecologists group animals into two main categories when it comes to their tolerance for human development. Some, like raccoons or rats, have figured out how to capitalize on the trash we make and the nooks and crannies we build. They are “urban exploiters.” Then there are the animals like mountain lions, lynxes and wolves that generally give human infrastructure a wide berth, often abandoning habitat where roads or buildings encroach. These are the “urban avoiders.”

As that list suggests, on land, big, toothy predators generally keep their distance from the din of the city. But less is known about their aquatic counterparts. So, a group of researchers set out to see if the sharks of Miami’s Biscayne Bay might shed some light on the matter…

The new wildlife in town: Sharks,” from @WarrenCornwall in @AnthropoceneMag.

Sharknado

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As we hug the shore, we might send deep birthday greetings to Robert Ballard; he was born on this date in 1942. An oceanographer, explorer, retired naval officer, and professor, he noted for his work in underwater archaeology: maritime archaeology and archaeology of shipwrecks. He is probably best known for his discoveries of the wrecks of the RMS Titanic in 1985, the battleship Bismarck in 1989, the aircraft carrier USS Yorktown in 1998, and the wreck of John F. Kennedy’s PT-109 in 2002. But he believes that his most important discovery was the existence of hydrothermal vents.

Ballard at TED, 2008

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“If you think you are too small to make a difference, try sleeping with a mosquito”*…

 

mosquito

 

A month after the opening salvos of the American Revolution at Lexington and Concord in April 1775, the newly appointed commander in chief of the Continental Army, George Wash­ington, had a request for his political masters in the Continental Con­gress. He urged them to buy up as much cinchona bark and quinine powder as possible. Given the dire financial pressures of the squabbling colonial government, and the dearth of pretty much everything needed to fight a war, his total allotment was a paltry 300 pounds. General Washington was a frequent visitor to the quinine chest as he suffered from recurrent bouts (and reinfection) of malaria since first contracting the disease in 1749 at the age of seventeen.

Luckily for the Americans, the British were also drastically short of Peruvian Spanish-supplied quinine throughout the war. In 1778, shortly before they entered the fray in support of the American cause, the Spanish cut off this supply completely. Any available stores were sent to British troops in India and the Caribbean. At the same time, the mosquito’s mer­ciless, unrelenting strikes on unseasoned British troops lacking quinine during the final British southern campaign — launched in 1780 with the capture of Charleston, the strategic port city and mosquito sanctuary­ — determined the fate of the United States of America.

As J. R. McNeill colorfully contours, ‘The argument here is straight­forward: In the American Revolution the British southern campaigns ultimately led to defeat at Yorktown in October 1781 in part because their forces were much more susceptible to malaria than were the American. . . . [T]he balance tipped because Britain’s grand strategy committed a larger proportion of the army to malarial (and yellow fever) zones.’ A full 70% of the British Army that marched into this southern mosquito maelstrom in 1780 was recruited from the poorer, famished regions of Scotland and the northern counties of England, outside the malaria belt of Pip’s Fenland marshes. Those who had already served some time in the colonies had done so in the northern zone of infection and had not yet been seasoned to American malaria.

General Washington and the Continental Congress, on the other hand, had the advantage of commanding acclimated, malaria-seasoned colonial troops. American militiamen had been hardened to their sur­roundings during the Seven Years’ War and the turbulent decades head­ing toward open hostilities against their king. Washington personally recognized, albeit short of scientific affirmation or medical endorsement, that with his recurrent malarial seasonings, ‘I have been protected be­yond all human probability or expectation.’ While they did not know it at the time, this might well have been the Americans’ only advantage over the British when, after twelve years of seething resentment and discontent since the passing of the Royal Proclamation [of 1763 that prohibited land sales to colonists], war suddenly and unexpectedly came.

The Americans’ secret weapon– an excerpt from Timothy C. Winegard’s Mosquito: A Human History of of our Deadliest Predator: “George Washington, Mosquitoes, and the American Revolution.”

[via the ever-illuminating Delanceyplace.com]

* Dalia Lama XIV

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As we douse ourselves in DEET, we might recall that it was on this date in 1781– before the fall of Yorktown, but after a decisive week of fighting– that General George Washington wrote to the President of the Continental Congress to give an account of the recent action.  Three days later the Siege of Yorktown (as it became known) ended with the surrender of British forces under General Cornwallis.  It was the final major land battle of the Revolutionary War; the capture of Cornwallis and his army prompted the British government to negotiate an end to the conflict.

300px-Surrender_of_Lord_Cornwallis

Surrender of Lord Cornwallis, by John Trumbull

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Written by (Roughly) Daily

October 16, 2019 at 1:01 am