NASA Finds Vegetation Essential for Limiting City Warming Effects

[Demeter]

1. NO, DUH!

Detroit lost all its magnificent elm trees, and its natural air conditioning, thanks to global trade....I still remember the golden cathedrals of autumn, the black lace of winter branches, the tenderest, purest green of spring and the welcome shade of summer...


The causative agents of DED (Dutch Elm Disease) are ascomycete microfungi. Three species are now recognized:

Ophiostoma ulmi, which afflicted Europe from 1910, reaching North America on imported timber in 1928.
Ophiostoma himal-ulmi, a species endemic to the western Himalaya.
Ophiostoma novo-ulmi, an extremely virulent species from Japan which was first described in Europe and North America in the 1940s and has devastated elms in both continents since the late 1960s


And global trade continues to spread diseases and predators...invasive species is the polite term.