Biology 2483A Study Guide - Midterm Guide: Cyperaceae, Carbon Cycle, Permafrost
9 Nov 2017
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Climate conditions exert selection pressure either main peaks to grow tall over other plants or adjust to low. High stems, drought- deciduous shrubs and temperatures, high evapotranspiration grasses rates. Seasonal rainfall, during dry season, lots of grass and shrubs. Short stature, lower tree densities, leaves drop annual precipitation: 1. 5 m. Long-term droughts and unsustainable grazing = loss of plant cover and soil erosion. + soils are nutrient- poor, forest regrowth is slow. Open canopy of short trees, evergreen trees and shrubs. Mainly canopy trees, but also shorter trees, forests shrubs and forbs. High enough to support of trees and maintains grass dominance manage grasslands forests. Rain-shadow effect, nutrient-poor soils have limited agricultural + pastoral development. Soils are fertile enough to supply the nutrients introduction of climate. 0. 5-2. 5 m lost when leaves are shed in the fall invasive species = loss of some species. Warm coastal zones to cool continental and maritime climates.
