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Scientific Reports,
. . . describe how organic waste from the foxes, and their kills,
. . . make the area surrounding their dens,
. . . more fertile, leading to almost
. . . 3 times as many:
. . . . . . dune grasses,
. . . . . . willows, and
. . . . . . wildflowers,
. . . to sprout up, compared to the rest of the tundra.

This blush of greenery around the fox dens,
. . . then lure other plant-eating animals like:
. . . . . . caribou,
. . . . . . lemmings, and
. . . . . . hares.
. . . Scavenging creatures such as:
. . . . . . polar bears,
. . . . . . wolves,
. . . . . . gulls, and
. . . . . . ravens,
. . . are drawn by the carcasses of prey,
. . . left by foxes as well,
. . . meaning that there's even more extra nutrients from the feces, and urine,
. . . left by all these visitors,
. . . creating even more verdant fox dens.

Almost 100 fox dens in the broader region around Hudson Bay,
. . . some of which may be hundreds of years old.
This is because foxes will often opt
. . . to reuse the same dens over many generations.

12-19-2017 Source: Arctic foxes grow beautiful #gardens