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778 millions… Against Asian carp

You read that right, it's not about click-bait. This is the figure that the Corps of Engineers, or the section of the army specializing in engineering and design, estimated to address an environmental problem that has now become a plague in the US: the invasion of Asian carp. Actually, this phenomenon is not news. Over the last 10 years have been allocated several million dollars, but they were insufficient to solve the problem. Rather, carp continued their conquest of American freshwater. But why invest so much money to stem these fish? The theme of [...]

The aliens on earth: what are invasive species?

Editorial board2021-07-15T20:05:31+02:0030 December 2018|Categories: Nature|Tags: aliens, animals, bed bugs, ecology, i forgot, mammals, specie invasive|

Bedbugs between the curtains, in clothes, on the walls, it almost seems like an invasion. But where did they come from? And why there are so many? The insect that we seem to find everywhere is the marbled brown bug, Halyomorpha halys, and it is an invasive alien species. Nothing to do with spaceships and laser beams; these are insects that are not where they should be: they were imported into a new environment which they found favorable for survival and reproduction. Halyomorpha halys. Photo: Pixabay First of all, some clarity on the terms. A native species is a species present in the territory not [...]