BIO 311D Lecture Notes - Lecture 32: Tropical And Subtropical Dry Broadleaf Forests, Tropical Rainforest, 30Th Parallel North
Document Summary
Biomes major life zones characterized by vegetation type or physical environment. Disturbance (storm, fire, human activity) changes community. Equatorial and subequatorial regions (near equator and near those areas) Tropical rain forest: rainfall relatively constant, high temperature year-round little seasonal variation, vertically layers with diverse biota and competition for light, tropical dry forests have a dry season. Deserts bands near 30 degrees north or south of equator and interior of continents: low precipitation, hot or cold, biota adapted for heat and desiccation tolerance (nocturnal, burrowing, etc. ) Savanna equatorial and subequatorial regions: precipitations seasonal, seasonal temperatures (avg. Chaparral midlatitude coastal regions: precipitation seasonal (rainy winters (cool) and dry (hot) summers, dominated by shrubs, small trees, grasses, many fire and drought adapted, animals: amphibians, birds, reptiles, insects, small mammals, browsing mammals. Temperate grassland: precipitation seasonal, cold winter (dry), hot summer (wet, dominated by grasses, native mammals that are large grazers (bison and wild horses and small burrowers like prairie dogs)
