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World’s Largest Dam Removal Unleashes U.S. River After Century of Electric Production

World’s Largest Dam Removal Unleashes U.S. River After Century of Electric Production | NGOs in Human Rights, Peace and Development | Scoop.it
The last section of dam is being blasted from the Elwha River on Washington's Olympic Peninsula on Tuesday.


For almost half a century, the two dams were widely applauded for powering the growth of the peninsula and its primary industry. But the dams blocked salmon migration up the Elwha, devastating its fish and shellfish—and the livelihood of the Lower Elwha Klallam tribe. As the tribe slowly gained political power—it won federal recognition in 1968—it and other tribes began to protest the loss of the fishing rights promised to them by federal treaty in the mid-1800s. In 1979, the U.S. Supreme Court ruled that Washington tribes, including the Elwha Klallam, were entitled to half the salmon catch in the state.


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Seth Dixon's curator insight, September 9, 1:16 PM

See also this video to see the rapid changes on the nearby White Salmon River when they removed the dam. 


Tags: biogeography, environment, land use, sustainability, environment adapt.

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The world's oldest living tree

The world's oldest living tree | NGOs in Human Rights, Peace and Development | Scoop.it
At 4,841 years old, this ancient bristlecone pine is the oldest known non-clonal organism on Earth. Located in the White Mountains of California, in Inyo National Forest, Methuselah's exact location is kept a close secret in order to protect it from the public. (An older specimen named Prometheus, which was about 4,900 years old, was cut down by a researcher in 1964 with the U.S. Forest Service's permission.) Today you can visit the grove where Methuselah hides, but you'll have to guess at which tree it is. Could this one be it?

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Seth Dixon's curator insight, January 31, 2:44 PM

I freely admit that I have a strange fascination with the twists and turns in a majestic tree; I find that they are great reminders of the wonders and beauty to be found on Earth. 


Tags: biogeography, environmentecology, historical, California.

Beatrice Do's curator insight, January 31, 3:40 PM

the exact location is kept a close secret O_O

Joseph Thacker 's curator insight, February 5, 7:17 PM

After reading this article, I am pleased to know that the world oldest non-clonal organism is located in California. It is amazing that a tree could still stand after almost 5,000 years. Hopefully, people do not destroy this tree, as it is fascinating. 

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Colombia's Herd of Hungry Hippos

Colombia's Herd of Hungry Hippos | NGOs in Human Rights, Peace and Development | Scoop.it

"A herd of hippopotamuses once owned by the late Colombian drug baron Pablo Escobar has been taking over the countryside near his former ranch - and no-one quite knows what to do with them."


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Seth Dixon's curator insight, June 26, 10:33 PM

An important idea in biogeography is the concept of invasive species. An invasive species is an organism that is not indigenous to an area but causes great economic or environmental harm to the new area as it quickly adapts and alters the ecosystem.   Colombia's hippopotamus herd certainly qualifies as an interesting example to share with students of unintended ecological consequences that occur through human and environmental interactions.  For further explorations into invasive species, see this National Geographic lesson plan.   

 

Tags: biogeography, environmentecology, Colombia, National Geographic.

Lorraine Chaffer's curator insight, August 1, 6:30 PM

Ecosystem imbalance