elsewhere “. Illustration of Kongonaphon kely, the ‘little insect killer’ relative of dinosaurs and pterosaurs discovered in Madagascar. / Alex Boersma / PNASThe increase in the average temperature of the air and the acidification of the oceans, as well as the frequency and intensity of extreme events such as torrential rains, droughts or hurricanes are examples of environmental changes caused by global change, which includes climate change. Likewise, the increase in salinity in freshwater masses in many areas of the planet is another of the irreversible changes that are taking place in the biosphere, with direct consequences on the survival of microorganisms that are essential for its functioning, since they are the in charge of primary

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production, the first step in the production of organic matter. Malta Phone Number List Researchers from the Department of Botany and Plant Physiology of the University of Malaga, within their line of R + D + i on experimental evolution, have studied the evolutionary behavior of a type of algae in the face of increased salinity in freshwater ecosystems, detecting that the speed at which these environmental alterations increase determines that their resistance is higher or lower. Specifically, the UMA scientific team has analyzed the limits of the resistance to salinity of the freshwater cyanobacterium Microcystis aeruginosa, a species present all over the planet that, at times, causes problems in the supply of drinking water, in livestock and wildlife, because it produces a hepatotoxic toxin.

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“We have observed that the resistance of this cyanobacterium is greater when the rate of increase in salinity is slow,” says Antonio Flores, a researcher from the Department of Botany and Plant Physiology, who affirms that it is a key scientific finding, since the Increased salinization on the planet, albeit rapidly, would therefore be associated with the expansion of these toxin producers, which survive and proliferate in this scenario, compared to other phytoplanktonic organisms. Likewise, the scientific team has shown that the survival of M. aeruginosa at high salinity levels is a consequence of the selection of new genetic variants that appear by mutation in populations. This study has recently been published in the scientific journal ‘Ecology

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