Showing posts with label ecology. Show all posts
Showing posts with label ecology. Show all posts

Monday, March 10, 2008

Ancient Ecoscience of the Mediterranean Basin

A good summary article about the ecological damage incurred in the Mediterranean Basin in ancient times:

"...The ancient Greeks took an essentially scientific view of their environment, and some Grecian writers saw that their land was deteriorating under human stewardship. Four centuries before Christ, Plato described Attica (the region around Athens), saying: "What now remains compared with what then existed is like the skeleton of a sick man, all the fat and soft earth having wasted away, and only the bare framework of the land being left." The description is even more apt today.

The Romans, in contrast, took a strictly utilitarian view of their environment: The land was there to be exploited by Homo Sapiens . The trend toward deforestation started in Greece and spread—during the Roman Empire—from the hills of Galilee in Palestine and the Taurus Mountains of Turkey in the east, to the mountains of Spain in the west. Various features of the Roman agricultural economy greatly encouraged this process . . . and their society had no counterbalancing conservation ethic.

Both the Egyptians and Greeks were determined hunters. They forced many larger animals (such as the lions in upper Egypt and in Greece) to extinction. But the Roman Empire had a far greater destructive impact on the fauna of the ancient world than did its predecessors. Not only were animals hunted for skins, feathers, and ivory . . . but multitudes were captured for use in "games".

Huge numbers of beasts were pitted against each other (and against human beings) in lethal combats. Titus, for example, had some 9,000 wild animals slaughtered during the three months' dedication of the Colosseum, and Trajan's conquest of Dacia (modern Romania) was celebrated by games in which 11,000 beasts were killed. When one considers that tens or even hundreds of lions, leopards, rhinos, buffalos, and so on must have died—or been killed—in transport or captivity for every one that lived to entertain the citizens, the probable scale of the Roman impact on wildlife staggers the imagination.

The Romans hit hard at their environment . . . but it struck back! Deforestation, the depletion of soils, and the exhaustion of mines were all factors in the fall of Rome's Empire. The Romans didn't finish the job, however. The last great plundering of Mediterranean forest resources occurred in the late Middle Ages, when the demand for timber for fuel and shipbuilding was very great. As a result, there's very little first-growth sclerophyllous forest left in the Mediterranean basin today . . . the best examples being in the Camargue of southern France and on the peninsula of Mt. Athos in Greece (protected by the famous monastery there)..."
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Friday, August 17, 2007

Ecological disaster being reconsidered as cause of Angkor's collapse

"Excavations are planned at Angkor to scour for more clues about ecological problems which led to the demise of Cambodia's great ancient city, an Australian archaeologist said Thursday.

"We have clear evidence now that Angkor was big enough to have caused environmental problems," Damian Evans said.

"But we need finer-grained detail to determine for sure how severe those problems were, and whether or not the local population was able to deal with them or not," said Evans, deputy director of the Greater Angkor Project at the University of Sydney.

His group published its findings in this week's online edition of Proceedings of the National Academy of Sciences.

They reveal that Angkor, during its zenith between the 9th and 14th centuries, was "the world's most extensive preindustrial low-density complex" and far larger than previously thought. It included an elaborate water management network encompassing nearly 1,000 square kilometers (390 square miles).

Extending rice fields to support a population of more than 1 million resulted in serious ecological problems, including deforestation, topsoil degradation and erosion.

The study's conclusions supported a theory in the early 1950s by Bernard-Philippe Groslier, a prominent French archaeologist, that the collapse of Angkor stemmed from over-exploitation of the environment.

The study produced a comprehensive digital mapping database detailing tens of thousands of individual features across nearly 3,000 square kilometers (1,160 square miles).

Previously, there were around 800 known temple sites in the mapped area, Evans said in an e-mail, adding that the number will likely be between 950 and 1,000 once results from the excavations have been verified on the ground."

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