UB BIO 200 - Final Exam Study Guide (2 pages)

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Final Exam Study Guide

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Final Exam Study Guide


This study guide outlines the third section of Bio 200, ecology. If you combine all 3 study guides you will have the bulk of the final exam.

Study Guide
University at Buffalo, The State University of New York
Bio 200 - Evolutionary Biology
Evolutionary Biology Documents
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BIO 200 1st Edition Final Exam Study Guide Lectures 25 27 Lecture 25 November 12 Ecology and Climate Key Concepts what ecology is and how climate is controlled Ecology study of distribution and abundance of species There are 2 parts to ecology abiotic physical elements and biotic living Climate is controlled by 3 factors o Variation in light intensity Varies across globe because of Earth s tilt and our atmospheric currents Hadley circulation patterns cause wet and dry parts of Earth Circulation is repeated around the Earth warm wet air rises moisture precipitates cool dry air falls Causes forest and desert placement around the world o Angle of Earth creates seasons when combined with orbit o Variation in local conditions Rain shadows caused by coastal mountains create strong forests and deserts around a mountain Slope variation of hills mountains Increased elevation causes adiabatic cooling Local climate ex lake effect snow El Nino and La Nina trade winds pushing cold upwells along South America to warm Australia and vice versa Pacific Decadal Oscillation shift between El Nino and La Nina occurs every 20 30 yrs You can t always predict the outcome of climate weather Lecture 26 November 14 Biomes and Niche Theory Key Concepts types of biomes and how niches act Biomes are defined by temperature and rainfall Types o Tundra cold and dry Arctic and high elevations o Boreal Taiga temperate evergreen forest o Temperate deciduous forest more species than boreal less coniferous rainfall increase o Temperate Grassland dryer same rain as boreal most biomass underground as roots o Hot desert o Cold desert more rain than hot bad winter very limited growth o Tropical Savannah heavy summer rainfall o Tropical rainforest highest biomass production high species and heat poor soil from epiphytes poor root system Species range does not equal biome range Niche entire set of resources a species needs to survive o Multiple species competition or coexistence o Can be partitioned niche packing determined by resource level o Fundamental entire area species could inhabit o Realized area species actually inhabits MacArthur s warbler niche partitioning Lecture 14 October 6 Species Interactions and Competition Key Concepts types of interactions competition effects and coexistence Interaction competition predation or symbiosis o Competition 2 or more species need same resource o Predation o Symbiosis long term interaction Mutualism Commensalism 0 Parasitism Ammensalism 0 Ghost of Competition s Past MacArthur divided niches with multiple species that coexist show previous competition occurred Competition types solve with niche partitioning o Exploitation 1 species lowers other s resources o Interference 1 species prevents another from gaining access to resources Species shouldn t coexist but they do Intraspecific competition can lower interspecific competition Intermediate disturbance highest diversity Coexistence resource partitioning disturbance predation intraspecific competition and character displacement

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