GEOG1710 1st Edition Lecture 15 Outline of Previous Lecture I Biogeography Outline of Current Lecture I II III Biomes Tropical Rainforest How deforestation affect carbon and climate Current Lecture Biomes Collection of ecosystems Climate is a major influence on ecosystem structure and processes at a global scale Vegetation Structure I II III Vegetation height Fine root distribution Total above ground biomass Ecosystem Processes I II III Annual NPP Actual evapotranspiration Annual nitrogen uptake Controls over Ecosystems I II III IV V Time Vegetation Topography Parent Material Climate Tropical Rainforest These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Most productive and most diverse on Earth Cover 7 of Earth have about 50 of worlds species NPP amount organization matter production in grams of carbon in a year perfect climate constant high temps day and night is a bigger difference than the changes in season winterless always wet 50 of tropical forest soils are old Nutrient poor and acidic High rainfall washing away of nutrients Rainforest trees are super cyclers nutrient cyclers Nutrients in plant biomes much of which is above ground Released then quickly absorbed Stable system lot of specialized niches Amazon basin Land use change plantation forestry to grazing Land cover physical state of the land such as vegetation type water Land cover changes How deforestation affect carbon and climate Mid latitude grasslands Largely modified by humans Climate strong temps seasonally moderate precipitation lower evapotranspiration than forest Biomass is underground Good soil Used for agriculture
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