Madrid, Spain (SPX) Feb 21, 2011
Just when everyone thought that almost every plant species on the Iberian Peninsula had been discovered, Spanish researchers have discovered Taraxacum decastroi and Taraxacum lacianense, two dandelions from the Pyrenees and the Cordillera Cantabrica mountain range, respectively. This finding confirms Spain's privileged position as a hotbed of biodiversity.
"It's hard to find new species now in Spain. It depends on the complexity of the group of plants you study", Antonio Galan de Mera, lead author of the study and a researcher in the Department of Biology (Botany) at the San Pablo-CEU University in Madrid, tells SINC.
According to the study, which has been published in Annales Botanici Fennici, it has been no easy task to identify these two new plants. "We had to compare them with numerous examples from Europe (above all in Spain and Portugal), which were lent to us from the collections of other colleagues", says Galan de Mera.
Taraxacum decastroi and Taraxacum lacianense are plants with long leaves and little pollen, because they reproduce by means of seeds without fertilisation. They also have "fairly characteristic" fruits with little ornamentation, "which differentiates them from other species in the Peninsula", the scientist adds.
T. decastroi, which takes its name from the naturalist Emilio de Castro y Perez de Castro, is a plant from the Pyrenees fir forests of Lerida, while T. lacianense, first spotted by Jose Alfredo Vicente Orellana, grows in the birch woods of the Montes de Leon mountains, specifically in the area of Laciana. Both plants live in moist environments and face certain threats.
"Taraxacum lacianense lives in environments that are very vulnerable to becoming dried out. In addition, the bogland in which it grows is in the birch woods of the Montes de Leon, which are seriously threatened by open cast coal mining", the biologist explains.
New plants, greater biodiversity
In Spain, "it is impossible to pinpoint" the number of new plants that still remain to be discovered "although genus studies can always throw up surprises", says the researcher, who is currently studying another "probable" new species in the province of Madrid related with a forest group. The team has also found another in Portugal, Segovia and Asturias.
The two new species will be included in the chapter on the Taraxacum genus in the work Flora Iberica, which has been published by the Spanish National Research Council (CSIC) since 1986. The Botany Department of the San Pablo-CEU University collaborates on this initiative by means of its herbarium, which conserves plants from the Iberian Peninsula and South America.
Galan de Mera, Antonio; Vicente Orellana, Jose Alfredo. "Taraxacum decastroi and T-lacianense (Asteraceae), two new species from the Iberian Peninsula". Annales Botanici Fennici 47(4): 307-311, 2010.
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Washington (AFP) Feb 20, 2011
A growing, more affluent population competing for ever scarcer resources could make for an "unrecognizable" world by 2050, researchers warned at a major US science conference Sunday. The United Nations has predicted the global population will reach seven billion this year, and climb to nine billion by 2050, "with almost all of the growth occurring in poor countries, particularly Africa and S ... read more
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