BIO E121 Lecture Notes - Lecture 23: Life Zone, Biome, Ecotone
Document Summary
Fall 2019: microclimate, can be influenced by features of local environment, example: a tree. Evidence of previous changes in fossils tree distribution. Similar changes projected now (and not just for trees: climate affects nature and location of biomes, biome: major life zone characterized by vegetation (terrestrial) or physical environment (aquatic, differentiated on basis of just a few variables, temperature, precipitation. Terrestrial biomes: climate affects distribution of plant species > affects biome distribution, climograph. Plot of annual mean temp and precipitation in a region: method of correlating climate and biomes, general features of terrestrial biomes, most names for major features or vegetation. Example: temperate grasslands: also characterized by , microorganisms, animals. Fungi: ecotone, area of intergradation between adjacent biomes, vertical layering of vegetation. Example: forests: canopy, low-tree layer, shrub understory, herbaceous layer, forest floor litter layer, root layer. Aquatic biomes: 2 major types, freshwater (aquatic) 0. 1% salt: closely linked to surrounding terrestrial biome.
