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Monday in Nature, 2 July 2018


Leslie Reid

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This is Corallorhiza maculata, the spotted coral-root orchid. They’re unusual for reasons other than contortionism (which isn’t characteristic of the genus; I can think of no plausible explanation for this one’s irrationally exuberant growth form): they are mycoheterotrophs. This one is taking nutrients from the mycelium of Russula fungi, which are themselves getting those nutrients from the surrounding Sitka spruce trees through a more balanced mycorrhizal relationship. The fungus latches onto and effectively extends the tree’s roots, increasing the tree’s supply of moisture and minerals, while the tree funnels sugars to the fungus in exchange. The orchid evidently just goes along for the free ride.

 

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This cute Arctic Fox was not found in the planet's polar regions. It has a more comfortable life living in Montreal's Parc Omega. I was fortunate to see it as it probably saw a delicious vole and sneakily ventured out to "let me" take its portrait.ArcticFox2.thumb.jpg.3b4ca135c20c838048b5a6f4b2937952.jpg

Niion D800 with Nikon 80-400mm lens @400mm. 1/320s f/8 ISO 1250

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