ENVI 101 Lecture Notes - Lecture 5: Tropical Rainforest, Hydrosphere, Geosphere
7 Sep 2016
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Old growth forests: trees that have not been disturbed for many years. Second growth forests: trees that have regenerated after being cut by humans, destroyed by fires, etc. Evergreen vs deciduous trees - located both in temperate lands because of nutrient-rich soil. Hemlock woolly adelgid: invasive insect from asia, sucks sap of hemlocks (invasive species) White pine (pinus strobus) are important because they are used for lumber. Sugar maple (acer saccharum) have leaves that have palmate shape (hand-like) and oppositely arranged (phyllotaxy - study of the number of leaves that are produced at each node) Big toothed aspen (populus grandidentata) tend to be shade intolerant; can be recognized by the shaking of the leaves. Red oak (quercus rubra) have pinnately lobed leaves; are important ecologically because animals feed on them. Chestnut oak (quercus prinus) is the one oak that doesn"t have pinnately lobed leaves. American beech (fagus grandifolia) have alternately arranged leaves.
