is algae have Participate in Dinosaur Extinction?

A recent study says, there is the possibility that the growth of algae contribute to the dinosaur extinction.
At approximately 540 million years ago, occurred the destruction of five types of organisms in large numbers. In this case, 50 to 90 percent of these extinct organisms are species of animals.
The results of studies conducted James Castle and John Rodgers of Clemson University says, toxic algae play an important role in the extinction of five organisms of Earth, including the best known species of loss of animal populations dinosaurs approximately 65 million years ago.
"We did not find any fossils gangang during extinction of the dinosaurs. But we suspect, other forms of algae have a role in the extinction process," Castle said as quoted by LiveScience, Tuesday (3/11/2009).
Algae are very simple organisms that obtain energy from sunlight. Some species of algae produce toxins that harm other aquatic organisms and humans.
For example, one group of algae called dinoflagellates can release neurotoxin or nerve poison that attacks the nerve cells.
Algae and other microorganisms can grow rapidly and can collect a dense population when he got an abundance of nutrients. This situation is usually called the 'algae blooms'.
At this time, toxic algae will spread and have effects that can destroy entire ecosystems, such as fish, marine mammals, birds and even humans.
But Castle and Rodgers mentioned, this hypothesis does not mention that the algae is the only factor of extinction of the dinosaurs and other prehistoric organisms.
Both are considered gangang as part of "kill mechanism" in the process of natural selection.

source : http://techno.okezone.com