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robertogreco : hybridization   3

Superwolves, new butterflies, and all the hybrid species evolving before our eyes - Quartz
"Some scientists and conservationists see the coywolf as a nightmare of the Anthropocene—a poster child of mongrelization as plants and animals reshuffle in response to habitat loss, climate change and invasive species. Golden-winged warblers increasingly cross with blue-winged warblers in the U.S. Northeast and eastern Canada. Southern flying squirrels hybridize with northern flying squirrels as the southern species presses northward in Ontario. Polar bears mate with grizzlies in the Canadian Arctic along the Beaufort Sea to produce “pizzly bears.”

All of this interbreeding upsets the conventional notion of species as discrete, inviolable entities. Moreover, some scientists and conservationists warn that hybridization will degrade biodiversity as unusual species are lost to genetic homogenization.
Partly scientists fear hybrids will be less fit than organisms that have evolved in place over eons. And often that is true, but the problem solves itself over time as hybrids lose out in the competitive race for survival.

Sometimes, however, the hybrids are more fit. Gradually they outcompete distinctive strains and species, wiping out biological diversity that has evolved over millennia. Often it is a common generalist species that swamps and essentially obliterates a rare, specialized and localized species. Many biologists view such occurrences as a net loss of biodiversity."



"“Hybridization is one of the overlooked but clearly very, very important causes of species’ going extinct,” says Stuart Pimm, professor of conservation ecology at Duke University. “Hybridization is a major problem. It comes from our moving species around, it comes from our changing habitat.”"



"Scientists who view hybridization as a driver of evolution and biodiversity say it even has a role to play in future conservation. Rather than try to protect rare species, such as the red wolf, from hybridization at all costs, biologists should consider the advantages of “the potential adaptive benefits from genomic transfers,” Arnold says.

Opponents of hybridization “might argue it’s less fit if it’s a hybrid,” says Arnold. “My argument would be, well, maybe it’s more fit. They would argue that hybridization is destroying biodiversity. And I would argue that maybe it’s not. Maybe it’s adding to it.”
The coywolf is as good an example as any—a combination of coyote stealth and wolf robustness that has helped it adapt to a rapidly changing landscape.

This more tolerant view of hybridization has already scored one huge conservation success story. Faced with an isolated and severely inbred population of Florida panthers, wildlife managers in the state reinvigorated the population by releasing eight female cougars of a different subspecies captured in Texas. Opponents of the move were concerned that hybridization between subspecies would destroy what was unique about the Florida panther. But the infusion of new genes saved the population.

Scientists and conservationists shouldn’t reflexively try to enforce distinctions between species and subspecies, says Arnold. “I really don’t like this idea of purity, because if we really push that to its nth degree, we are a hybrid. So we need to get rid of us.”"
2015  evolution  nature  climatechange  hybrids  gregbreining  interbreeding  coywolf  anthropocene  hybridization  animals 
june 2015 by robertogreco
SpeEdChange: If you say "scale up," you don't understand humanity
"The trick to sharing "best practices" is to stop doing that. Instead, share "our practices" and let ideas meet, collide, mix, and take root differently in each place. The trick to "scaling up" is the same - stop trying. If BMW has to "Americanize" their cars in order to sell them in the United States (adding cup holders, etc), what makes people like Intel or the KIPP or TFA foundations so arrogant as to imagine that they can replicate themselves among vastly different communities?

Instead we imagine, attempt, describe, converse. We pass along concepts, not plans. We share observations, not blueprints. We accept that whether it is a child or a school, we can not evaluate anything with a checklist or a score, but only with very human description.

That's a less rational world which requires more humane effort, and it contains troubling mountains and deep valleys because it is not flat. But it is the world in which we actually live."
heartofdarkness  wine  diversity  differences  norming  norms  standardization  rttt  nclb  arneduncan  benjamindistraeli  williamgladstone  cottonmather  hybridization  worldisflat  universaldesign  scalingup  scalingacross  germany  france  uk  us  americanization  localism  local  teaching  learning  unschooling  deschooling  comparativeeducation  blueprints  society  americanexceptionalism  exceptionalism  reform  britisshemprire  thomasfriedman  assimiliation  cooexistence  frenchcolonialism  terroir  deborahfrieze  margaretwheatley  anglocentrism  decolonization  colonization  humanscale  human  scaling  scale  education  schools  2012  irasocol 
february 2012 by robertogreco
alex dodge: generative
"the interests of new york-based artist alex dodge extends into the relationships between humanity, technology, art and design, in which he has designed a collection of garments of concept prototypes developed in collaboration with brooklyn-based tech start-up generative. each of the works address the notion of passive interfacing; engaging the human body through acquiescent means. some of the pieces seem to be influenced by science fiction while others are more accessibly clear-cut. the prototypes developed by dodge himself, range in their levels of functionality, but are presented here as art objects and design objects on equal standing. while dodge may focus on creating mass-manufacturable products, envisioning that they bring people one step closer to a utopian ideal, dodge's objects fetishize the technological imperative, or the inevitable hybridization of man and machine, as something worthy of appreciation in itself."
alexdodge  art  design  dreams  sleep  hybridization  technology  technologicalimperative  glvo  embedded  wearable  humanity  generative  wearables 
july 2010 by robertogreco

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