BIOL 2903 Lecture Notes - Lecture 14: Populus Tremuloides, Betula Alleghaniensis, Lycopodiopsida
15 Apr 2017
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Document Summary
Red-backed salamanders: females suspend their eggs inside rotting logs essential for reproduction. Ruffed grouse: drumming on rotten logs, benefit from old logs. Rotting logs attract insects benefiting other salamanders such as the blue-spotted. Salamanders and the spotted salamander (big yellow spots). They like moisture and feeding on soft invertebrates. Water collects in pools in the forest following winter (they leave during summer) temporary ponds they are called ephemeral ponds. They develop from melting snow in low areas. Two advantages to laying eggs in ephemeral ponds (temporary ponds); (1) no predators like fish, and (2) don"t have to travel as far (close by). Winters with little snow means the salamanders cannot reproduce in those years. If the area is wetter the red maples are dominant (males have red leaves in fall while the females turn yellow). This is the only maple that has different phenotype for the sexes. Moose make markings on the trees eat the bark of these trees.
