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Latest Incremental dating Stories

ab83c92b9079ce516d7b77a62096599b1
2010-06-18 09:40:33

Findings released during the annual Goldschmidt Conference at the University of Tennessee, Knoxville By examining 800,000-year-old polar ice, scientists increasingly are learning how the climate has changed since the last ice melt and that carbon dioxide has become more abundant in the Earth's atmosphere. For two decades, French scientist J©rôme Chappellaz has been examining ice cores collected from deep inside the polar ice caps of Greenland and Antarctica. His...

83cea68164c21f7a801590ec4134064d1
2010-05-26 09:42:42

Droughts in the late 20th century rival some of North Africa's major droughts of centuries past, reveals new research that peers back in time to the year 1179. The first multi-century drought reconstruction that includes Morocco, Algeria and Tunisia shows frequent and severe droughts during the 13th and 16th centuries and the latter part of the 20th century. An international research team figured out northwest Africa's climate history by using the information recorded in tree rings. The...

1b7bdc43d0a9c89d109b0cec0b93b62d1
2010-05-05 07:50:58

An international team of marine biologists has found that existing diversity in some coral populations may significantly influence their response to extreme temperature disturbances "” such as those predicted from climate warming. The team demonstrated that natural selection acting on the species of algae living within corals may determine which partnerships will survive when confronted with extreme temperatures changes. The results will be published online in the May 5 issue of the...

e58edc1ff65fb2107ef2e9f50ccd49c11
2010-02-16 06:39:55

Scientists may use fossilized coral reefs in the Great Barrier Reefs to understand how sea levels have changed over the past 20,000 years. An international team of researchers plan to spend 45 days at sea, gathering core samples from about 40 sites. Coral, which is described as the "tree of the sea", have growth rings that show seasonal variations. Researchers say that samples taken of the coral will also help show past sea temperatures, as well as other changes to the reef. Alan...

78af923dc2ae1e6605eddd8b9bbd86a21
2010-01-21 10:09:10

Ice Age climate records from an Arizona stalagmite link the Southwest's winter precipitation to temperatures in the North Atlantic, according to new research. The finding is the first to document that the abrupt changes in Ice Age climate known from Greenland also occurred in the southwestern U.S., said co-author Julia E. Cole of the University of Arizona in Tucson. "It's a new picture of the climate in the Southwest during the last Ice Age," said Cole, a UA professor of geosciences. "When it...

e9f22c880e44bd0589c6aace7109744a
2009-11-02 14:37:09

Researchers spent two months this summer high in the Peruvian Andes and brought back two cores, the longest ever drilled from ice fields in the tropics. Ohio State glaciologist Lonnie Thompson said that this latest expedition focused on a yet-to-be-named ice field 5,364 meters (17,598 feet) above sea level in the Cordillera Blanca mountain range. The researchers hiked to a col, or saddle, between two adjacent peaks "“ Hualcán and Copa "“ set up camp and used a ground sensing...

8342ef8d9751f25468546419772546321
2009-10-20 07:55:00

An analysis of sediment cores indicates that biological and chemical changes occurring at a remote Arctic lake are unprecedented over the past 200,000 years and likely are the result of human-caused climate change, according to a new study led by the University of Colorado at Boulder. While environmental changes at the lake over the past millennia have been shown to be tightly linked with natural causes of climate change -- like periodic, well-understood wobbles in Earth's orbit -- changes...

2009-09-10 12:53:00

A U.S.-led scientific team has found a rare photosynthetic alga might be able to save certain colonies of coral from the damaging effects of global warming. The team, led by Pennsylvania State University Assistant Professor Todd LaJeunesse, evaluated corals -- and the photosynthetic algae that live inside their cells -- before, during and after a period in 2005 when global warming caused Caribbean Ocean sea-surface temperatures to rise. Symbiodinium trenchi is normally a rare species of...

b2e6d7f94e9bbe173558de2e5879e6fb1
2009-09-10 08:20:00

Scientists take advantage of 'experiment of nature' to discover new insights into coral bleaching A rare opportunity has allowed a team of scientists to evaluate corals--and the essential, photosynthetic algae that live inside their cells--before, during, and after a period in 2005 when global warming caused sea-surface temperatures in the Caribbean to rise. The team, led by Penn State biologist Todd LaJeunesse, found that a rare species of algae that's tolerant of stressful environmental...

2009-08-07 14:51:27

Oil companies and biologists have teamed to protect coral communities from the expansion of drilling platforms in the Gulf of Mexico, U.S. researchers said. Erik Cordes, a Temple University biologist, and a team of researchers later this month are to map out new coral sites with the aid of the Jason II, a remotely operated vehicle on loan from the Woods Hole Oceanographic Institute in Massachusetts. Funded by U.S. federal grants, the researchers are to set up so-called mitigation sites around...


Latest Incremental dating Reference Libraries

800px-Capnella_sp
2012-04-03 17:35:45

Nephtheidae is a family of soft corals known as carnation corals, tree corals or colt soft corals. These corals are very striking and show a wide range of rich colors including red, pink, yellow and purple. These corals are mainly tree-like in that they branch out and have little knobs on the end of their rubbery branches. Another name given these animals are broccoli corals, due to the fact that their polyps retract in the daytime, giving them the resemblance of the vegetable. The polyps...

800px-Fungia_scutaria_1
2012-04-03 16:17:43

Fungia scutaria is a species of mushroom coral in the family Fungiidae. It is found in the Indo-Pacific oceanic region. It occurs on upper reef slopes especially where there is considerable water movement. It is typically found on sand beds or coral fragments. It lives as a single individual rather than as a colony and is detached from the seabed. It has an elongated shape and can grow quite large. The polyp can be up to 6.7 inches long and is embedded in a cup-shaped hollow known as a...

Stephanosoenia_michelinii_1
2012-04-03 14:18:34

Astrocoeniidae is a family of stony corals endemic to the waters around Papua New Guinea and northern Australia. Their habitats are steep slopes where strong currents rise from below, in crevices and below overhangs. These are reef-building colonial corals containing an algae known as zooxanthallae. These algae typically encrust corals up to 20 inches in diameter. On reef slopes, where water is more turbid (cloudy/murky), they are much smaller, only reaching 2 inches across. The World...

720px-Folded_Coral_Flynn_Reef
2012-04-03 14:15:16

Alcyoniidae is a family of leathery corals that occur globally in temperate and tropical seas. These reef dwellers are often found in wave-exposed areas of reef crests, less turbid waters in lagoons, on steep slopes, under overhangs, and at depths of 100 feet and deeper. A colony of leathery coral is stiff, hard, and inflexible. It is composed of tiny polyps projecting from a shared leathery tissue. There are two kinds of polyps seen in Alcyoniidae corals: autozooids have long trunks and...

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Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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