By Liliana Usvat
Blog 268 -365
Most everyone is familiar with the enigmatic stone heads of Easter Island, the massive carved rocks that sit on stone platforms on the coast and lie scattered across the landscape.
A chilling story of resource exploitation and destruction on Easter Island is beginning to come to light. The first westerners to discover the island wondered how any one could have survived on such a desolate, treeless place. Indeed, this was a mystery until recent core samples taken from the crater lakes showed that the island was heavily forested with a giant now-extinct palm while the Easter Island culture was active.
Easter Island is the prototypical example illustrating the serious consequences of the overexploitation of natural resources by man. According to this thesis, the deforestation of the island, noted by the first explorers, was due to the negligence of the Pascuenses themselves. This latter group, applying no forethought, were said to have cut down all the trees essential to their survival for domestic purposes or even more foolishly, for constructing, transporting and setting up their famous Moai. The disappearance of the trees thus ineluctably led to the decline of their civilization and the near disappearance of the Pascuenses.
When Easter Island was "discovered" by Europeans in 1722, it was a barren landscape with no trees over ten feet in height. The small number of inhabitants, around 2000, lived in a state of civil disorder and were thin and emaciated. Virtually no animals besides rats inhabited the island and the natives lacked sea-worthy boats.
The Easter Island of ancient times supported a sub-tropical forest complete with the tall Easter Island Palm, a tree suitable for building homes, canoes, and latticing necessary for the construction of such statues. With the vegetation of the island, natives had fuelwood and the resources to make rope. With their sea-worthy canoes, Easter Islanders lived off a steady diet of porpoise. A complex social structure developed complete with a centralized government and religious priests.
It was this Easter Island society that built the famous statues and hauled them around the island using wooden platforms and rope constructed from the forest. The construction of these statues peaked from 1200 to 1500 AD, probably when the civilization was at its greatest level. However, pollen analysis shows that at this time the tree population of the island was rapidly declining as deforestation took its toll.
A spooky cave (right) at the southwest corner of the island, Ana Kai Tangata, is translated to "cave where men are eaten." Inside are pictographs painted in ochre and white of ghost like birds flying upwards. With no wood left to build boats, all the Rapa Nui people could do was look enviously at the birds that sail effortless through the sky. The Rapa Nui culture and community, which had developed over the past 300 years, collapsed.
Around 1400 the Easter Island palm became extinct due to overharvesting. Its capability to reproduce has become severely limited by the proliferation of rats, introduced by the islanders when they first arrived, which ate its seeds. In the years after the disappearance of the palm, ancient garbage piles reveal that porpoise bones declined sharply.
The islanders, no longer with the palm wood needed for canoe building, could no longer make journeys out to sea. Consequently, the consumption of land birds, migratory birds, and mollusks increased. Soon land birds went extinct and migratory bird numbers were severely reduced, thus spelling an end for Easter Island's forests. Already under intense pressure by the human population for firewood and building material, the forests lost their animal pollinators and seed dispersers with the disappearance of the birds. Today, only one of the original 22 species of seabird still nests on Easter Island.
With the loss of their forest, the quality of life for Islanders plummeted. Streams and drinking water supplies dried up. Crop yields declined as wind, rain, and sunlight eroded topsoils. Fires became a luxury since no wood could be found on the island, and grasses had to be used for fuel. No longer could rope by manufactured to move the stone statues and they were abandoned. The Easter Islanders began to starve, lacking their access to porpoise meat and having depleted the island of birds. As life worsened, the orderly society disappeared and chaos and disarray prevailed.
Links
https://www.youtube.com/watch?v=jYliCfzOkDE
Blog 268 -365
Most everyone is familiar with the enigmatic stone heads of Easter Island, the massive carved rocks that sit on stone platforms on the coast and lie scattered across the landscape.
The heads, called moai, and a small native population are virtually all that is left of the Polynesian civilization that once flourished on the island. The once-lush forests that covered the 63-square-mile island, known to its inhabitants as Rapa Nui, have all been lost and the fertile soil that once supported a vital farming community has been blown away by tradewinds.
A chilling story of resource exploitation and destruction on Easter Island is beginning to come to light. The first westerners to discover the island wondered how any one could have survived on such a desolate, treeless place. Indeed, this was a mystery until recent core samples taken from the crater lakes showed that the island was heavily forested with a giant now-extinct palm while the Easter Island culture was active.
Easter Island is the prototypical example illustrating the serious consequences of the overexploitation of natural resources by man. According to this thesis, the deforestation of the island, noted by the first explorers, was due to the negligence of the Pascuenses themselves. This latter group, applying no forethought, were said to have cut down all the trees essential to their survival for domestic purposes or even more foolishly, for constructing, transporting and setting up their famous Moai. The disappearance of the trees thus ineluctably led to the decline of their civilization and the near disappearance of the Pascuenses.
When Easter Island was "discovered" by Europeans in 1722, it was a barren landscape with no trees over ten feet in height. The small number of inhabitants, around 2000, lived in a state of civil disorder and were thin and emaciated. Virtually no animals besides rats inhabited the island and the natives lacked sea-worthy boats.
The Easter Island of ancient times supported a sub-tropical forest complete with the tall Easter Island Palm, a tree suitable for building homes, canoes, and latticing necessary for the construction of such statues. With the vegetation of the island, natives had fuelwood and the resources to make rope. With their sea-worthy canoes, Easter Islanders lived off a steady diet of porpoise. A complex social structure developed complete with a centralized government and religious priests.
It was this Easter Island society that built the famous statues and hauled them around the island using wooden platforms and rope constructed from the forest. The construction of these statues peaked from 1200 to 1500 AD, probably when the civilization was at its greatest level. However, pollen analysis shows that at this time the tree population of the island was rapidly declining as deforestation took its toll.
A spooky cave (right) at the southwest corner of the island, Ana Kai Tangata, is translated to "cave where men are eaten." Inside are pictographs painted in ochre and white of ghost like birds flying upwards. With no wood left to build boats, all the Rapa Nui people could do was look enviously at the birds that sail effortless through the sky. The Rapa Nui culture and community, which had developed over the past 300 years, collapsed.
Around 1400 the Easter Island palm became extinct due to overharvesting. Its capability to reproduce has become severely limited by the proliferation of rats, introduced by the islanders when they first arrived, which ate its seeds. In the years after the disappearance of the palm, ancient garbage piles reveal that porpoise bones declined sharply.
The islanders, no longer with the palm wood needed for canoe building, could no longer make journeys out to sea. Consequently, the consumption of land birds, migratory birds, and mollusks increased. Soon land birds went extinct and migratory bird numbers were severely reduced, thus spelling an end for Easter Island's forests. Already under intense pressure by the human population for firewood and building material, the forests lost their animal pollinators and seed dispersers with the disappearance of the birds. Today, only one of the original 22 species of seabird still nests on Easter Island.
With the loss of their forest, the quality of life for Islanders plummeted. Streams and drinking water supplies dried up. Crop yields declined as wind, rain, and sunlight eroded topsoils. Fires became a luxury since no wood could be found on the island, and grasses had to be used for fuel. No longer could rope by manufactured to move the stone statues and they were abandoned. The Easter Islanders began to starve, lacking their access to porpoise meat and having depleted the island of birds. As life worsened, the orderly society disappeared and chaos and disarray prevailed.
Links
https://www.youtube.com/watch?v=jYliCfzOkDE
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