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pierredv : ecology   24

Biodiversity thrives in Ethiopia’s church forests - Nature, Jan 2019
"Ecologists are working with the nation’s Tewahedo churches to preserve these pockets of lush, wild habitat. "

Lovely full-screen photos
NatureJournal  Ethiopia  forestry  ecology  conservation  photography  religion  churches 
january 2019 by pierredv
Niche construction: the forgotten force of evolution | New Scientist, Nov 2003
By Kevin Laland and John Odling-Smee

"Our studies have convinced us that niche construction should be recognised as a significant cause of evolution, on a par with natural selection."

"Put another way, the only relevant evolutionary feedback from extended phenotypes is to the genes that express them. So when beavers build dams, they ensure the propagation of “genes for” dam building, but that is all. Yet by constructing their own niche, beavers radically alter their environment in many ways. "

"Across the globe, earthworms have dramatically changed the structure and chemistry of soil by burrowing, dragging plant material into the soil, mixing it up with inorganic material such as sand, and mulching the lot by ingesting and excreting it as worm casts. The scale of these earthworks is vast. What’s more, because earthworm activities result in cumulative improvements in soil over long periods of time, it follows that today’s earthworms inhabit environments that have been radically altered by their ancestors. In other words, some extended phenotypes can be inherited. "
NewScientist  biology  evolution  *  ecology 
september 2018 by pierredv
A Twisted Path to Equation-Free Prediction - Quanta magazine Dec 2015
"Complex natural systems defy standard mathematical analysis, so one ecologist is throwing out the equations." "Sugihara’s team has developed an approach based on chaos theory that they call “empirical dynamic modeling,” which makes no assumptions about salmon biology and uses only raw data as input."
chaos  complexity  ecology 
january 2016 by pierredv
Scared to death: How intimidation changes ecosystems - life - 04 June 2013 - New Scientist
"Fear and intimidation are far more common in nature than we realised, with surprising consequences not just for animals but for the entire landscape" Impact of wolf reintroduction in Yellowstone Park: elk numbers down, cottonwood trees up, beavers up. Also use behavior of blue sheep and tahr in the Himalayas to track/count snow leopards
predator  Yellowstone  Park  elk  complexity  predation  wolves  ecology  NewScientist  tahr  landscape  snow  leopard  fear 
july 2013 by pierredv
Terrestrial ecology: NEON light | The Economist Aug 2012
Big Science comes to ecology: building 60 highly instrumented sites with 15,000 sensors across US
BigScience  BigData  ecology  research  TheEconomist 
september 2012 by pierredv
Saving US grasslands: a bid to turn back the clock on desertification -
"As grasslands diminish on prairies and savannas around the world, an innovative ranching technique that reverses the environmental damage of desertification makes its way to the US." "moving his cattle around the land in a way that mimics the movement of buffalo centuries before. The idea is called Holistic Management"
farming  agriculture  csmonitor  environment  ecology 
november 2011 by pierredv
DAS In Action: 'Green' buildings at odds with RF propagation - RCR Wireless News
"Green building designs are good for the environment and benefit society, but they can wreak havoc on cellular signals, panelists agreed during an educational session that was part of PCIA's DAS Forum “DAS In Action: Capital View” event here earlier this week."
rcrwireless  wireless  propagation  ecology 
june 2011 by pierredv
The Malpai Borderlands Project: A Stewardship Approach to Rangeland ...
First found via story in Smithsonian magazine, Jun 1997 "Finding common ground in the range war" - quote "the importance of keeping rural people on the land in order to preserve it"
See also,
One of the premises that led to the group's formation was that "the exclusion of wildfire from the borderlands was contributing to a decline in herbaceous plant cover with resulting loss of watershed stability, wildlife habitat, and livestock forage"
See also "the concept of a "grassbank". If a member rancher suffers a bad season (perhaps due to prolonged drought), he can move his cattle onto Gray Ranch until his own ranchland is able to recover. The rancher turns an amount of land of equal value over to the Malpai Borderlands Group, which puts the land into easement, prohibiting future subdivision. The Group then uses money from its contributing members and donors to pay back the "bank"."
ecology  conservation 
february 2010 by pierredv
Common ecology quantifies human insurgency : Nature
From abstract: the sizes and timing of violent events within different insurgent conflicts exhibit remarkable similarities. We propose a unified model of human insurgency that reproduces these commonalities, and explains conflict-specific variations quantitatively in terms of underlying rules of engagement. Our model treats each insurgent population as an ecology of dynamically evolving, self-organized groups following common decision-making processes
ecology  power-law  war  conflict  NatureJournal 
december 2009 by pierredv
On the Origin of Ecological Structure -- Stokstad 326 (5949): 33 -- Science
Abstract: Ecologists have wrestled with understanding what dictates the kinds and proportions of organisms in communities ranging from meadows to montane forests. Competition, predation, disturbance, and other factors have a heavy hand, and new research is showing the influential role of evolution as well. But there is still no consensus on the relative importance of the various forces. Darwin and many later ecologists emphasized competition among species, but proponents of a controversial theory of biodiversity that assumes competition has no impact argue that immigration and other random demographic events can account for much of the apparent makeup of communities. As a result, ecologists have a long way to go to come up with formulas that predict how communities might arise and change. Yet the ability to make predictions is important for the restoration and management of ecosystems impacted by invasive species or climate change.
ecology  evolution  ScienceMag  complexity  toget 
october 2009 by pierredv
A ‘miracle tree’ that could feed sub-Saharan Africa |
"The moringa’s leaves and seedpods deliver extraordinary nutrition, advocates say, but aid groups await a formal study."
diet  biology  ecology  development-assistance  CSMonitor 
september 2008 by pierredv
Science Historians Ponder Naming 'Enemies' In Science Literature
Matthew Chew and Manfred Laubichler discuss a fundamental problem in the science of ecology – its use of metaphorical language.
metaphor  science  ecology  ** 
july 2008 by pierredv
Nature 2.0: Redefining conservation - earth - 07 July 2008 - New Scientist Environment
mountain pine beetle story hybrid species - endangered? rebuilding ecosystems, not just trying to protect status quo
ecology  NewScientist 
july 2008 by pierredv
How overfishing can alter an ocean’s entire ecosystem |
good survey of how taking out top predators changes entire ecosystem
ecology  policy  complexity  ** 
june 2008 by pierredv
Forestry | Protected by bars |
computerised forest-protection system in Liberia - tries to minimize corruption possibilities by limiting information humans have to deal with - inspectors just scan barcode, data is separately compared to d/b (now corruption will be of d/b admins)
ecology  software  corruption  via:economist 
march 2008 by pierredv
Vavilovian mimicry - Wikipedia, the free encyclopedia
a form of mimicry in plants where a weed comes to share one or more characteristics with a domesticated plant through generations of artificial selection
ecology  biology 
january 2008 by pierredv
Attempt to Turn Terns from Columbia River Mouth - KUOW
attracting them to a place where they can keep down invasive fish, and not eat a salmon run
january 2008 by pierredv

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