HYDRAULIC NOISES. “Bark beetles may pick up the air bubble pops inside a plant, a hint that trees are experiencing drought stress.”
http://www.livescience.com/27802-plants-trees-talk-with-sound.html
HYDRAULIC NOISES. “Bark beetles may pick up the air bubble pops inside a plant, a hint that trees are experiencing drought stress.”
http://www.livescience.com/27802-plants-trees-talk-with-sound.html