Population Dynamics Current Events | Population Dynamics News | 2
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DNA analysis reveals rapid population shift among Pleistocene cave bears
Studying DNA obtained from teeth of ancient cave bears, researchers have been able to identify a shift in a particular population of the bears inhabiting a European valley in the late Pleistocene era. view more (2007-02-20)
Cold Spring Harbor Protocols features methods for visualizing protein dynamics
This month's release of Cold Spring Harbor Protocols highlights methods that permit scientists to observe protein dynamics in chromosomes and embryos. view more (2008-01-03)
Renaturation of waterbodies does not have to be expensive
The water landscape in many countries has many deficiencies. The ecological consequences of this are poor water quality as well as a deterioration and a shift of the naturally occurring species spectrum. The Fraunhofer Institute for Systems and Innovation Research ISI, Germany, has examined the existing morphological water structure deficiencies... view more... (2002-08-20)
UCSB researchers discover that the cell's endosomes use a surprising transportation system
Cells have developed a surprising transportation system for their endosomes, according to research published today in Physical Review Letters, "Dynamics and Spatial Organization of Endosomes in Mammalian Cells." view more (2005-10-06)
Novel living system recreates predator-prey interaction
The hunter-versus-hunted phenomenon exemplified by a pack of lionesses chasing down a lonely gazelle has been recreated in a Petri dish with lowly bacteria. view more (2008-04-14)
New Director for the Proudman Oceanographic Laboratory in Liverpool
Professor Andrew Willmott has been appointed the next Director of the Proudman Oceanographic Laboratory in Liverpool. view more (2005-03-11)
Australia's climate: Drought and flooding in annual rings of tropical trees
Annual rings are acclaimed in representing natural climate archives. For the temperate latitudes it is known that the growth of these annual rings depend mainly on temperature and precipitation. view more (2009-06-12)
Models Simulate Nitrate Dynamics in Garonne, Southwest France
The over-enrichment of fresh, transitional, and marine waters with nitrogen (N) can lead to problems associated with eutrophication, such as a change in species composition of aquatic plants and nuisance algal blooms. In this context, dynamic models of flow and water quality are required to aid the implementation of the Water Framework Directive... view more... (2009-01-06)
Researchers measure field strength and density of ICF implosions
Scientists have identified for the first time two distinctly different types of electromagnetic configurations in inertial confinement fusion implosions that have substantial effects on implosion dynamics and diagnosis. view more (2008-02-29)
Living Metals
Using synchrotron x-ray microbeams, a research team from the Max Planck Institute for Metals Research in Stuttgart and the ESRF has been able to observe for the first time that the microscopic structure of a crystalline material fluctuates in time. The results are published today in Science Express with the title: Scaling in the Time Domain:... view more... (2005-04-22)
Nitrogen retained through loss
The nitrogen cycle plays a major role in seagrass fields. Dutch researcher Arie Vonk studied the nitrogen dynamics of seagrasses in Indonesia. He discovered that the interaction between seagrasses, animals and microorganisms results in an efficient nitrogen cycle in tropical seagrass fields. Consequently the nitrogen lost from seagrasses is still... view more... (2008-05-23)
Modelling disease spread in a novel host: rabies in the European badger Meles meles
A recently published article in the December issue of Journal of Applied Ecology deals with the potential spread of classical (fox) rabies if it were to get into the badger population in Britain. Smith and Wilkinson's paper, and its findings, are not relevant to bat rabies, as bat rabies has only been recorded in terrestrial animals on three... view more... (2002-12-04)
Study shows male homosexuality can be explained through a specific model of Darwinian evolution
Reporting in this week's PLoS ONE, an Italian research team, consisting of Andrea Camperio Ciani and Giovanni Zanzotto at the University of Padova and Paolo Cermelli at the University of Torino, found that the evolutionary origin and maintenance of male homosexuality in human populations could be explained by a model based around the idea of... view more... (2008-06-18)
Improved estimates of population extinction risk (Harding and McNamara)
An important application of theoretical ecology is in estimation of species extinction risk. Extinction models guide the selection of management regimes for endangered species. Two vital parameters in these models are the mean population growth rate and its variance. However, empirical data on population growth are rarely perfect, but are... view more... (2003-12-10)
Visualizing atomic-scale acoustic wavesin nanostructures
Acoustic waves play many everyday roles - from communication between people to ultrasound imaging. Now the highest frequency acoustic waves in materials, with nearly atomic-scale wavelengths, promise to be useful probes of nanostructures such as LED lights. view more (2008-07-07)
Slang evolves, says new research
New research suggests that slang evolves to give its users the edge over their competitors. And, as slang is understood and adopted by the establishment, groups develop new codes to keep them ahead of the game. Possible examples include cockney rhyming slang and verlan. Common Language or Tower of Babel: The Evolutionary Dynamics of Signals and... view more... (2002-11-08)
UC San Diego Bioengineers Fill Holes in Science of Cellular Self-Organization
The chemical and biological aspects of cellular self-organization are well-studied; less well understood is how cell populations order themselves biomechanically - how their behavior and communication are affected by high density and physical proximity. view more (2008-10-07)
MIT researcher sees big impact of little cracks
An MIT researcher's atom-by-atom simulation of cracks forming and spreading may help explain how materials fail in nanoscale devices, airplanes and even in the Earth itself during a quake. view more (2006-01-19)
Nuclear weapons: Predicting the unthinkable
If a nuclear weapon were detonated in a metropolitan area, how large would the affected area be? Where should first responders first go? According to physicist Fernando Grinstein, we have some initial understanding to address these questions, but fundamental issues remain unresolved. view more (2009-11-23)
Mean Population Size Increases with Diversity
A long-standing debate in ecology has been the effect of diversity on the temporal stability of biological systems. Ecological theory predicts that the stability of populations should decline as community diversity increases, in part, because population size is assumed to decline with community richness. In the February issue of Ecology Letters,... view more... (2003-01-28)
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