BIOL 2903 Lecture Notes - Lecture 8: Spruce Grouse, Fraxinus Pennsylvanica, Hudson Bay Lowlands
15 Apr 2017
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Boreal forest continued - natural history (lecture 9) Beaver ponds are nutrient sinks, good for plant growth white water lilies and yellow pond lilies. One of their favorite foods are the rhizomes of pond lilies. The leaves are food for other animals; water lily leaf beetles. Muskrats are also found in beaver ponds also benefit from the damns. Midges (flies) live in the mud of beaver ponds as grubs. You will see swarms over the ponds when they are adults. Eclosion is the term describing the emergence of an adult insect from the nymph casing. This is standing water so fatter bodied dragonflies are found here, they are called. Beaver ponds also provide a place for american toads to court and lay their eggs. There is a higher diversity of amphibians (wood frog: freeze tolerant, leopard frog: not freeze tolerant, and the mink frog). **warmer water = more species = greater biodiversity.
