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Rescooped by Gwyneth Midgley from BIODIVERSITY IS LIFE –
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Why Are Grizzlies Important To The Ecosystem

Why Are Grizzlies Important To The Ecosystem | grizzly bears | Scoop.it
So why are Grizzlies important to the ecosystem? The scientific community uses the Grizzly Bear to determine the health of an ecosystem. (Why Are Grizzlies Important To The Ecosystem - Grizzly Bears are an American icon.

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Rescooped by Gwyneth Midgley from Geography Education
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Bridges For Animals - Wildlife Overpasses

Bridges For Animals - Wildlife Overpasses | grizzly bears | Scoop.it

Our modern society depends on greater connectivity between places.  Regionalized economies, politics and transportation networks are increasingly integrated with far-flung places now more than ever before.  Our biosphere and natural environments are exceptions to this pattern.  Wilderness areas are 'islands' in an ocean of human controlled environments.   We create transportation linkages that unite people economies and cities, but separate herds from there extended habitat. 

 

We've all seen road kill on major highways.  Species like deer, elk, and grizzly bears and other large-bodied animals need a wide range for numerous ecological reasons.  These bridges are an attempt to ameliorate some of the problems that our roads pose for the non-human species that still call Earth home.  From a purely economic standpoint, many argue that these bridges save society money given the accidents and property damage that can be avoided. 

 

UPDATE: This is a hilarious/painful video of a woman who clearly doesn't understand these principles.

 

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


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Carly Schaus's comment, October 3, 2013 9:48 PM
I think this would be a great idea! it would keep the animals, nature and people safe. They have protection from motor vehicles where they crash on.
Courtney Gritman's comment, October 4, 2013 3:22 PM
I think this would be a wonderful solution from innocent animals from being killed and thousands of car accidents being prevented.
Jerod Garland's comment, October 15, 2013 8:55 PM
This is very interesting! Good scoop!
Rescooped by Gwyneth Midgley from Motorhome Madness
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Grizzly Bear Research Resuming In Glacier, Yellowstone National Parks - National Parks Traveler

Grizzly Bear Research Resuming In Glacier, Yellowstone National Parks - National Parks Traveler | grizzly bears | Scoop.it
Grizzly Bear Research Resuming In Glacier, Yellowstone National Parks National Parks Traveler Glacier National Park wildlife biologists attempt to maintain a sample of up to 10 radio-collared female grizzly bears out of an estimated population of...

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Rescooped by Gwyneth Midgley from Inuit Nunangat Stories
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Polar bears had Irish grizzly ancestor - Technology & Science - CBC News

Polar bears had Irish grizzly ancestor - Technology & Science - CBC News | grizzly bears | Scoop.it

Based on the genetic sequences analyzed, modern polar bears were more closely related to Irish brown bears than ancient polar bears. (Canadian Press) [excerpt]

A female grizzly bear who lived in Ireland less than 50,000 years ago was an ancestor of all modern polar bears, suggesting grolar hybrids were an important part of polar bear history.

The unexpected DNA evidence suggests that interbreeding between polar bears and brown bears — usually known as grizzly bears in North America — is not unusual at times when climate change caused the range of the two species to overlap, such as around the beginning of the last ice age


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