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Grizzly bears, black bears, wolves, coyotes, cougars/ mountain lions,bobcats, wolverines, lynx, foxes, fishers and martens are the suite of carnivores that originally inhabited North America after the Pleistocene extinctions. This site invites research, commentary, point/counterpoint on that suite of native animals (predator and prey) that inhabited The Americas circa 1500-at the initial point of European exploration and subsequent colonization. Landscape ecology, journal accounts of explorers and frontiersmen, genetic evaluations of museum animals, peer reviewed 20th and 21st century research on various aspects of our "Wild America" as well as subjective commentary from expert and layman alike. All of the above being revealed and discussed with the underlying goal of one day seeing our Continent rewilded.....Where big enough swaths of open space exist with connective corridors to other large forest, meadow, mountain, valley, prairie, desert and chaparral wildlands.....Thereby enabling all of our historic fauna, including man, to live in a sustainable and healthy environment. - Blogger Rick

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Thursday, March 1, 2018

A team of American, French, Spanish and Swedish scientists have published a Paper revealing that "meta-analysis of 400 studies worldwide that document recovery from large-scale disturbances, such as oil spills, agriculture and logging, suggests that though ecosystems are progressing towards recovery following disturbances, they rarely recover completely".............Don't be fooled by the TV and Print commercials that polluting Firms put forward claiming that all is recovered after extraction and accident occurrences in and around their Operations...............Even well-intentioned and well funded restoration efforts of damaged sites fall short of a return to prior biodiversity levels............."Recovery rates slowed down with time since the disturbance ended, suggesting that the final stages of recovery are the most challenging to achieve"............The bottom line is large, core reserves of intact systems with connective bio-rich corridors to other large, core reserves of instact ecosystems are a must if we are to protect and optimize biodiversity both at home and around the world

Study suggests active restoration of damaged ecosystems not always better than nature

February 28, 2018 by Bob Yirka,

An international team of researchers has found evidence that suggests human efforts to restore damaged ecosystems are not always better than simply letting nature take its course. In their paper published in Proceedings of the Royal Society B, the group describes analyzing over 400 studies documenting ecosystem recovery efforts and reports their findings.

While we have to extract minerals to live a modern life,
Mining extraction sites are hard to fully reclaim

To balnce our impact on the land due to our need for minerals, 
timber and energy, large core reserves of natural areas interconnected
 by additional natural corridors are needed to optimize biodiversity

As humans have realized that  on the planet are a limited resource, attempts have be made to repair the damage. Forests are replanted, for example, or dams are demolished—such efforts often include the reintroduction of plants and animals threatened by . But the researchers with this effort wanted to know, whether or not such efforts are better than simply allowing nature to take its course. To find out, they pored over papers and other documentation materials created by others who studied individual ecosystem recovery efforts.
The researchers conclude that ecosystem recovery efforts are a mixed bag—some do appear to restore areas to their natural states in a relatively short amount of time. But others seemed to do no better than nature—and some did not seem to succeed at all. Planting trees in areas where they have been cut down is clearly faster, they note, than letting seedlings find their way across vast stretches of barren land. But simply removing a dam may not be enough to return a river system to its prior state—in some cases, animals may have gone extinct, for example.

More examples of difficult to reclaim extraction sites as well
as a Rocky Mtn paradigm for optimizing biodiversity

The team also used data from the documentation to produce statistics on ecosystem recovery, such as the speed at which different types of systems recover. They found, for example, that on average,  recovery rates ran from 1 to 10 percent per year, and that marine systems and wetlands tended to recover faster than lakes and forests. They also noted multiple instances in which ecosystems never recovered completely.
The researchers conclude their analysis by suggesting that rather than dash in with a plan for ecosystem restoration, planners should take more time to study the unique areas they are dealing with and then decide if their efforts will reap the desired rewards.

More information: Holly P. Jones et al. Restoration and repair of Earth's damaged ecosystems, Proceedings of the Royal Society B: Biological Sciences (2018). 

Restoration and repair of Earth's damaged ecosystems

Holly P. JonesPeter C. JonesEdward B. BarbierRyan C. BlackburnJose M. Rey BenayasKaren D. HollMichelle McCrackinPaula MeliDaniel MontoyaDavid Moreno Mateos

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