Ecology & Zoology
While many are aware of the destruction of coral reefs, not many are actually aware of the extent of this destruction. The coral reefs of the world particularly in Floridian waters and the south Caribbean Sea are in desperate need of management if it is to survive for the coming years. Already, global warming has created coral graveyards in countries, most recently in the Buccoo Reef near the island of Tobago. While coral bleaching is the result of global warming, a phenomenon that is as broad in its dimensions as the policies that are debated to curb it, the real danger to coral reefs in…
A new study indicates that a popular type of genetically engineered corn--called Bt corn--may damage the ecology of streams draining Bt corn fields in ways that have not been previously considered by regulators. The study appears in the Oct. 8 edition of The Proceedings of the National Academy of Sciences.
This study provides the first evidence that toxins from Bt corn may travel long distances in streams and may harm stream insects that serve as food for fish. These results compound concerns about the ecological impacts of Bt corn raised by previous studies showing that corn-grown toxins…
Cornell researchers and Sathguru Management Consultants of India have successfully led an international consortium through the first phase of developing a pest-resistant eggplant. By about 2009 this eggplant is expected to be the first genetically engineered food crop in South Asia. Farmers have grown genetically altered cotton in India since 2002.
The engineered eggplant expresses a natural insecticide derived from the bacteria Bacillus thuringiensis (Bt), making it resistant to the fruit and shoot borer (FSB), a highly destructive pest. The tiny larvae account for up to 40 percent of…
In public imagination, the sabre-toothed cat Smilodon ranks alongside Tyrannosaurus rex as the ultimate killing machine. Powerfully built, with upper canines like knives, Smilodon was a fearsome predator of Ice-Age America's lost giants.
For more than 150 years, scientists have debated how this iconic predator used its ferocious fangs to kill its prey. Now a new Australian study, published today in the US Proceedings of the National Academy of Science, hopes to lay the arguments to rest. And the results will put in dent in Smilodon's reputation.
Scientists from the University of New South…
Despite the fact that many scientists have resorted to chemicals and non-biological means of controlling invasive species, none have truly worked especially when using it against those plant species such as the Japanese Knotweed that have become so established here in the United States. One method that can be used which few scientists have explored is Allelopathy.
Simply speaking, allelopathy is when plants produce compounds that can inhibit growth of other plants. This is a problem in places where invasive species can destroy many native plants by producing bio-molecules that are able…
World Wildlife Fund scientists said today that the discovery of 11 new animal and plant species in a remote area in central Vietnam underscores the importance of conservation efforts in the ancient tropical forests of the region.
Within the ancient tropical forests of a region known as Vietnam's "Green Corridor," scientists found a snake, five orchids, and two butterflies as well as three other plants new to science and exclusive to the Annamites Mountain Range. Ten other plant species, including four orchids, are still under examination but also appear to be new species.
Acanthosaurus…
Recent research from Vidi researcher Josef Stuefer at the Radboud University Nijmegen reveals that plants have their own chat systems that they can use to warn each other. Therefore plants are not boring and passive organisms that just stand there waiting to be cut off or eaten up. Many plants form internal communications networks and are able to exchange information efficiently.
Many herbal plants such as strawberry, clover, reed and ground elder naturally form networks. Individual plants remain connected with each other for a certain period of time by means of runners. These connections…
Scientists have proved for the first time that vitamin C is essential for plant growth. Vitamin C is already known to be an antioxidant, which helps plants deal with stresses from drought to ozone and UV radiation, but until now it was not known that plants could not grow without it.
The study in The Plant Journal describes a newly-identified enzyme, GDP-L-galactose phosphorylase, which produces ascorbate ( vitamin C ) in plants. This discovery could have implications for agriculture and for the production of vitamin C dietary supplements.
Professor Nicholas Smirnoff of the University of…
Accepted global climate models had predicted the Amazon forest would begin to "brown down" after just a month of drought and eventually collapse as the drought progressed. Instead, drought-stricken regions of the Amazon forest grew particularly vigorously during the 2005 drought, according to new research.
“Instead of ‘hunkering down’ during a drought as you might expect, the forest responded positively to drought, at least in the short term," said study author Scott R. Saleska of The University of Arizona. "It's a very interesting and surprising response."
UA co-author Kamel Didan added, "…
A new study of finger-sized Australian lizards sheds light on one of the most striking yet largely unexplained patterns in nature: Why is it that some groups of animals have evolved into hundreds, even thousands of species, while other groups include only a few?
The study takes a look at Australia's most diverse group of vertebrates -- more than 252 species of lizards called skinks. Researchers at the Cornell Lab of Ornithology have found evidence that the "drying up" of Australia over the past 20 million years triggered this explosive diversification.
Skinks have incredible species…