Biology 2483A- Final Exam Guide - Comprehensive Notes for the exam ( 130 pages long!)

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Published on 29 Mar 2018
Department
Professor
Western
Biology 2483A
Final EXAM
STUDY GUIDE
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Ecology 2483A Introduction
Exams only test of the material that was either covered or assigned in lecture.
Case Study = double checking if you know the information.
Ability to plot and interpret data is tested on exams (practice by doing analyzing data sections).
Do the assigned sections prior to the tutorial, quizzes after each tutorial (5% each).
Midterm 30% (Saturday October 28th 2017)
Tutorials ad Quizzes 20%
Final 50%
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Unit 1: Organisms and the Environment Chapter 1: The Web of Life (Sept. 7th 2017)
Key Concepts:
1. What is Ecology?
The scientific study of interactions between organisms and their environment that
determine the distribution and abundance of those organisms.
NOT environmental science.
Define (Fig. 1.8):
o Organism
o Population
o Community
o Ecosystem
o Biosphere
o Landscape: an area that includes patches of multiple ecosystems.
o Biotic vs. Abiotic
Biotic is living where as abiotic is non-living.
o Adaptation: a charateristi that iproves a orgais’s aility to survive or
reproduce.
o Natural Selection: the process by which individuals with particular characteristics
tend to survive and reproduce at a higher rate.
If the characteristic is heritable then the frequency of it in the population
should increase over time.
o Producers vs. Consumers (Fig. 1.11)
Producers produce their own food where as consumers eat other organisms
to obtain energy.
o Nutrient Cycle: consumption, decomposition, root uptake.
Organisms and their environment are interconnected through diet and energy flow.
o Abiotic and biotic changes can send a big ripple throughout their ecosystem.
Everything goes somewhere.
o Our waste has to go somewhere and that can affect ecosystems.
No population can increase in size forever.
o Predation, disease, no more space, antibiotic resistance.
Finite energy and resources lead to trade-offs.
o Trade-off between growth and recreation.
o More into growth, less into reproduction and vice versa.
Organisms evolve.
o Mice immune to warfarin (new species).
o Green lizard got pushed from the bottom of the tree to the tops and produces
bigger toe pads and stickier scales.
Communities and ecosystems change over time.
o Natural disasters (fires, hurricanes, etc.)
Organisms are affected at varying scales.
o Climate change, landscape change, personal change, etc.
Organisms require interactions for energy.
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