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27f93ca3dea46c112baf65d4661649eb
2010-02-08 16:22:54

Around 30 to 40 million years ago, grasses on Earth underwent an epic evolutionary upheaval. An assemblage capitalized on falling levels of atmospheric carbon dioxide by engineering an internal mechanism to concentrate the dwindling CO2 supply that, like a fuel-injection system in a car, could more efficiently convert sunlight and nutrients into energy. The rise of C4 grasses is not disputed. They dominate in hot, tropical climes and now make up to 20 percent of our planet's vegetational...

2009-12-18 11:35:00

SAVANNA, Ill., Dec. 18 /PRNewswire/ -- The Tri-County Economic Development Alliance (TCEDA) is encouraging supporters to attend the official state hearing on the proposed sale of the Thomson Correctional Center to the federal government. The event, scheduled for Tuesday, Dec. 22 at 2 p.m. in Centennial Auditorium at Sterling High School, is expected to draw national attention and protests from several groups. "I know there are a lot of reports out there saying this proposal is a 'done...

d3bfdfdcc715abda3bc7926c5708123c1
2009-10-29 08:30:00

Fire is often thought of something that trees should be protected from, but a new study suggests that some trees may themselves contribute to the likelihood of wildfires in order to promote their own abundance at the expense of their competitors. The study, which appears in the December 2009 issue of the journal The American Naturalist, says that positive feedback loops between fire and trees associated with savannas can make fires more likely in these ecosystems. "We used a mathematical...

4606a439f2bb3eb6e2b0d2fd081d44c8
2009-10-09 08:00:00

Among the many surprises associated with the discovery of the oldest known, nearly complete skeleton of a hominid is the finding that this species took its first steps toward bipedalism not on the open, grassy savanna, as generations of scientists "“ going back to Charles Darwin "“ hypothesized, but in a wooded landscape. "This species was not a savanna species like Darwin proposed," said University of Illinois anthropology professor Stanley Ambrose, a co-author of two of 11...

27a1ebe5fc549efb96f1117cd49896c91
2009-06-24 11:05:00

A team of scientists that reviewed the size and locations of more than 7000 species of plants have determined a global pattern of plant height, BBC News reported. They've found that tropical plants like to grow tall, while temperate zone plants are much smaller in comparison. And plant species growing at the equator are around 30 times taller on average than those at higher latitudes. Rainfall seems to have a bigger influence on plant height than temperature or soil fertility and the...

0810193ed2dccd77892644518091eee21
2009-01-19 15:32:04

Geographers from the University of Leicester are to use state-of-the-art technology to investigate how climate change is affecting the world famous Kruger National Park in South Africa. It is part of a wider project examining the impact of climate change of African savannas. The academics in the Department of Geography at the University of Leicester have been awarded Royal Society funding to establish a Science Network with South Africa. Professor Heiko Balzter and colleagues are going to...

2008-08-20 03:00:25

By Nicolai, Nancy Smeins, Fred E; Cook, Jerry L ABSTRACT. - Vegetation composition is often dictated by grazing intensity in semiarid savannas; recovery following drought may depend on pre drought species composition. Nests of the red harvester ant, Pogonomyrmex barbatus, affect the dynamics, composition and recovery of post drought communities due to their larger size, greater seed production and higher perennial grass richness. We hypothesized that vegetation at ant nests would survive...

2008-07-12 00:00:16

The Fish and Wildlife Service has announced that the Potter's Marsh (Mississippi River Pool 13) drawing for duck blinds will be held on Saturday, July 26, at the House of Events in Savanna Ill. The House of Events is located in downtown Savanna at 108 Main Street, across from City Hall. Applications will be accepted from 10 a.m. to 2 p.m., with the drawing to be held at 2 p.m. You must apply in person and must be present at the drawing. When your ticket is drawn in the lottery, you will...

b9763cb6118d7873cd66e8ec91ab95bb1
2008-06-19 14:00:00

A team of scientists may have solved the riddle of why plants that work with bacteria to convert atmospheric nitrogen gas into an essential biological nutrient (ammonia) tend to prevail in the world's tropical regions rather than higher latitudes. In a paper published this week in Nature, the authors "“ including Dr Ying Ping Wang from The Centre for Australian Weather and Climate Research "“ say that nitrogen fixation has long been recognized as an important process in...

2008-02-20 03:00:34

By Archer, Jessica K Miller, Deborah L; Tanner, George W ARCHER, J. K. (Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL 32611), D. L. MILLER (Department of Wildlife Ecology and Conservation, University of Florida West Florida Research and Education Center, 5988 Hwy 90, Bldg 4900, Milton, FL 32583), AND G. W. TANNER (Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL 32611). Changes in understory vegetation and soil...


Latest Savanna Reference Libraries

Kazakh Uplands
2013-04-18 23:02:25

The Kazakh Uplands, known also as the Kazakh Hummocks, is a large peneplain formation that stretches throughout the central and eastern regions of Kazakhstan. It’s made up of low mountain oases and elevated plains, and contains large deposits of coal within the north and copper within the south. Rare species, such as the Asiatic Cheetah, may still reside in this region. Several notable cities, including the country’s capital, Astana, are located there. A portion of the Kazakh Uplands...

Mongolian-Manchurian Grassland
2013-04-18 22:58:55

The Mongolian-Manchurian grassland ecoregion, known also as the Mongolian-Manchurian Steppe, located in the temperate grassland Biome, is found in Mongolia, the Chinese Autonomous region of Inner Mongolia and northeastern China. The grassland covers an area of 342,600 square miles. This Palearctic temperate grasslands, savannas, and shrublands ecoregion of the Temperate grasslands, savannas, and shrublands Biome, creates a large crescent around the Gobi Desert, stretching across central...

28_b9d8ff979b4cdc359c0db142d7c64e3d
2009-07-02 23:05:06

The Cerrado (English: "inaccessible") is an immense tropical savanna ecoregion located in Brazil. It is distinguished by its wide variety of plant and animal biodiversity. According to the World Wildlife Fund, it is the richest savanna in the world, known for its flora and fauna. The climate of the Cerrado is mostly hot to semi-humid in the summer with a dry winter season which lasts from May to October. The annual precipitation for this region is between 31 - 63 inches. The soils are old,...

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Word of the Day
vermicular
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.
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