Tag Archives: desert

‘Zeitarbeitsfirma’ (temporary employment agency): The ‘other side’ of Germany’s labour market

By Guest PostOctober 20, 2013Economy, General, Jobs, Media, Politicsaaron, anonymous, central storage facility, construction works, der Spiegel, desert, euro, European Union, everyday life, exploitation, fictional, german authorities, german government, Germany, international labor organisation, justice, kuendigung machen, labour market, landsberg, leased worker, leipzig, leipzig airport, lieharbeiter, lost, manuel, mariam, nightshift, poland, polish colleagues, rail lines, rossmann, temporary employment agency, the mirror, zeitarbeiter, zeitarbeitsfirma, zentrallager

There are hundreds of ‘Zeitarbeitsfirma’ or ‘temporary employment agency’ dominating the current German labour market. These agencies lease workers mostly on short-term basis to different industries, supermarkets and other business enterprises. Leased workers (In German: Lieharbeiter or Zeitarbeiter) are normally low-paid and forced to do the heaviest works at their work places. Often they have to accept or bow down to inhuman demands of the ‘Zeitarbeitsfirma’.

Summarized here are few cases from different sources who experienced the hardship under the so-called ‘Zeitarbeitsfirma’: (more…)

Invasion in the Desert: Why Some Plant Species are Survivors

By Guest PostSeptember 25, 2013Environment, Natureblooming chaenactis stevioides, brassica tournefortii, changing environment, desert, desert plants, doctoral student, dry environments, dune, environmental policy, environmental variation, field ecologist, fitness density covariance, habitat, invasion, invasive species, max li, mohawk valley, native desert plants, peter chesson, plant species, research, sahara mustard, sand, sonoran desert, southern arizona, Space, survivors, time, university of arizona, winter rainfall

Max Li’s research could inform policies to promote sustainable native environments and curb the invasion of alien plant species.

Max Li, a University of Arizona doctoral student in the Department of Ecology and Evolutionary Biology, is studying mechanisms that determine how competing desert plants can coexist with each other and what factors can cause the destruction of this stable coexistence.

His research could help inform policies to curb the spread of invasive species. (more…)

Roots of Deadly 2010 India Flood Identified; Findings Could Improve Warnings

By Guest PostNovember 14, 2012Environmentarabian sea, bay, bengal, big thompson canyon, black hills, clouds, colorado, desert, dramatic rain, flash flood, himalayas, indian town, kristen rasmussen, leh, moisture, mountain, natural disaster, plains, reanalysis data, remote region, robert houze, satellite images, south dakota, storms, tibetan plateau, torrential downpour, total rainfall, university, valley, warning, Washington, weather forecaster

On the night of Aug. 5, 2010, as residents slept, water began rushing through Leh, an Indian town in a high desert valley in the Himalayas.

Average total rainfall in the area for August is about a half-inch. During this 24-hour period more than 8 inches fell, causing severe damage and leaving 193 dead, hundreds missing and thousands homeless.

“Flash flooding events don’t happen often but when they do they are some of the scariest, most dangerous and quickest natural disasters that can happen,” said Kristen Rasmussen, a University of Washington graduate student in atmospheric sciences. “But now that we know what types of conditions to look out for, flash flood warnings in remote regions of India might be possible.” (more…)

Native Plants in Urban Yards Offer Birds “Mini-Refuges”

By Guest PostAugust 24, 2012Environment, Natureaberts towhee, arizona birds, behavior, biodiversity, bird, coral reef, curve billed thrasher, desert, doug levey, ecosystem, eyal shochat, forest, grassland, gud, hilary gan, house sparrow, lter, mini refuges, native plant, paige warren, residential landscape, sonoran desert, susannah lerman, urban yard, xeric

Landscaping with native vegetation helps local bird species

Yards with plants that mimic native vegetation offer birds “mini-refuges” and help to offset losses of biodiversity in cities, according to results of a study published on August 22, 2012 in the journal PLOS ONE.

“Native” yards support birds better than those with traditional grass lawns and non-native plantings.

Researchers conducted the study through the National Science Foundation’s (NSF) Central Arizona-Phoenix Long-Term Ecological Research (LTER) site, one of 26 such sites around the globe in ecosystems from coral reefs to deserts, from forests to grasslands. (more…)

CU-Boulder-led Team Finds Microbes in Extreme Environment on South American Volcanoes

By Guest PostJune 13, 2012Scienceandrew king, archaea, atacama mountain, atacama region, bacteria, carbon monoxide, chemical reaction, chile argentina border, desert, dimethylsulfide, dna analysis, extreme environment, fluorescent techniques, fungal ecosystems, fungi, glacier retreats, high altitude, maria farias, martian like landscape, metabolism, microbes, mountain area, organisms, peruvian andes, photosynthesis, rocky soils, ryan lynch, south america, steve schmidt, temperature fluctuation, ultraviolet radiation, university of colorado, volcan llullaillaco, volcan socompa, volcanoes

A team led by the University of Colorado Boulder looking for organisms that eke out a living in some of the most inhospitable soils on Earth has found a hardy few.

A new DNA analysis of rocky soils in the Martian-like landscape on some volcanoes in South America has revealed a handful of bacteria, fungi and other rudimentary organisms called archaea, which seem to have a different way of converting energy than their cousins elsewhere in the world.

“We haven’t formally identified or characterized the species,” said Ryan Lynch, a CU-Boulder doctoral student involved in the study. “But these are very different than anything else that has been cultured. Genetically, they’re at least 5 percent different than anything else in the DNA database of 2.5 million sequences.” (more…)

Mesquite Trees Displacing Southwestern Grasslands

By Guest PostMarch 21, 2012Environment, Natureatmosphere, biochemical pathway, bouteloua eriopoda, carbon dioxide, catalina mountains, changing climate, climate, climate data, desert, ecohydrology, ecosystems, eddy covariance tower, grama grass, grassland, greg barron gafford, groundwater, groundwater pool, mesquite tree, muhlenbergia porter, muhly, photosynthesis, predictions, prosopis velutina, rainfall, root system, san pedro river riparian area, santa rita mountains, seasonal precipitation, southeastern arizona, southwest, southwestern climate, sugars, temperature, university of arizona, warming climate, water resource, woody shrub

Mesquite trees and woody shrubs are better adapted than grasslands to a Southwestern climate predicted to shift toward higher temperatures and greater variability in rainfall, UA ecologists have discovered.

As the desert Southwest becomes hotter and drier, semi-arid grasslands are slowly being replaced by a landscape dominated by mesquite trees, such as Prosopis velutina, and other woody shrubs, a team of University of Arizona researchers has found.

In a “leaf-to-landscape” approach, the team combined physiological experiments on individual plants and measurements across entire ecosystems to quantify how well grasslands, compared to mesquite trees and woody shrubs, cope with heat and water stress across seasonal precipitation periods. (more…)

NASA: Climate Change May Bring Big Ecosystem Changes

By Guest PostDecember 15, 2011Environmentbiodiversity, biome changes, biosphere, boreal forests, caltech, carbon, climate, climate change, climate model projections, computer modeling, desert, duane waliser, earth, eastern equatorial africa, ecological consequences, ecological sensitivity, ecosystem, element cycles, energy, environmental changes, forest, global climate simulations, grassland, great lakes, great plains, greenhouse gases, himalayas, hotspots, ice, jon bergengren, last glacial maximum, Madagascar, major ecological community type, mediterranean region, melting glaciers, migrate, model projections, modern climate changes, multiple generations, NASA, North America, northern hemisphere, plant communities, rising sea levels, southern south america, tibetan plateau, tundra, water

PASADENA, Calif. – By 2100, global climate change will modify plant communities covering almost half of Earth’s land surface and will drive the conversion of nearly 40 percent of land-based ecosystems from one major ecological community type – such as forest, grassland or tundra – toward another, according to a new NASA and university computer modeling study.

Researchers from NASA’s Jet Propulsion Laboratory and the California Institute of Technology in Pasadena, Calif., investigated how Earth’s plant life is likely to react over the next three centuries as Earth’s climate changes in response to rising levels of human-produced greenhouse gases. Study results are published in the journal Climatic Change. (more…)

Radar for Mars Gets Flight Tests at NASA Dryden

By Guest PostJune 22, 2011Sciencedesert, dryden flight research center, edwards, environmental conditions, fa 18 aircraft, florida, jet propulsion laboratory, kennedy space center, mars, mars landing radar software, mars radar, mars science laboratory mission, martian atmosphere, microbial life, NASA, nasa technology, pasadena, southern california

Southern California’s high desert has been a stand-in for Mars for NASA technology testing many times over the years. And so it is again, in a series of flights by an F/A-18 aircraft to test the landing radar for NASA’s Mars Science Laboratory mission.

The flight profile is designed to have the F/A-18 climb to 40,000 feet (about 12,000 meters). From there, it makes a series of subsonic, stair-step dives at angles of 40 to 90 degrees to simulate what the Mars radar will see while the spacecraft is on a parachute descending through the Martian atmosphere. The F/A-18 pulls out of each dive at 5,000 feet (about 1,500 meters. Data collected by these flights will be used to finesse the Mars landing radar software, to help ensure that it is calibrated as accurately as possible. (more…)