Chapter 15 Notes (Week 6)
Chapter 15 Notes (Week 6) BIOL 101
Cal State Fullerton
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This page Class Notes was uploaded by Xyvil Dapal on Sunday February 28, 2016. The Class Notes belongs to BIOL 101 at California State University - Fullerton taught by in Winter 2016. Since its upload, it has received 27 views. For similar materials see Biology in Biology at California State University - Fullerton.
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Date Created: 02/28/16
CHAPTER 15 NOTES 151 1517 151 WHAT ARE ECOSYSTEMS a community of biological organisms plus the nonliving components with which the organisms interact consists of all the living organisms within an area aka COMMUNITY the physical often referred as the organisms habitat consists of o The chemical resources in soil water air 0 The physical conditions temp salinity moisture humidity energy sources Ecosystems are not just found in obvious places could be found in digestive tracts of organisms 152 BIOMES ARE LARGE ECOSYSTEMS THAT OCCUR AROUND THE WORLD EACH DETERMINED BY TEMPERATURE AND RAINFALL the major ecological communities of earth terrestrial rain forest or desert defined by plant life aquatic physical features such as salinity water movement depth Important questions average temperature Average rainfall Constant temperature or seasonal Constant rainfall or seasonal a tidal water passage linked to the sea in which salt water and fresh mix characterized by exceptionally high productivity 153 GLOBAL AIR CIRCULATION PATTERNS CREATE DESERTS AND RAIN FORESTS Global weather patterns determined by shape of earth Warmer climate on equator because sun hits there more directly The Poles are cooler Temperature gradient generates atmospheric circulation patterns heavy rain around equator and deserts 154 LOCAL TOPOGRAPHY INFLUENCES THE WEATHER the physical features of a region including those created by humans High altitudes have lower temperatures increasing elevation leads to air pressure drop decreasing pressure increasing temperature Rain shadows create deserts an area in the lee of a mountain where there is no or reduced rainfall because the air passing over the mountain falls becoming warmer and thus increasing the amount of moisture it can hold Asphalt cement and tops of buildings absorb heat raising the temperature Tall buildings channel wind downward 155 OCEAN CURRENTS AFFECT THE WEATHER Water is continuously moving and mixing due to wind earth s rotation gravitational pull of the moon temperature salt concentration a dramatic climate change driven by ocean currents ocean surface temperatures are lower than usual opposite to El Nino effects 156 ENERGY FLOWS FROM PRODUCERS TO CONSUMERS a step in the ow of energy through an ecosystem convert the sun light s energy into chemical energy through photosynthesis the of organic material produced in a biome the herbivores the animals that eat plants the carnivores animals that feed on herbivores energy captured and harnessed for movement reproduction and growth the top carnivores animals that eat animals that eat the animals that eat plants the path from producers to tertiary consumers decomposers break down the organic material harvesting energy still stored in the chemical bonds 157 ENERGY PYRAMIDS REVEAL THE INEFFICIENCY OF FOOD CHAINS a diagram that illustrates the path of energy through the organisms of an ecosystem each layer of the pyramid represents the biomass of a trophic level
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