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Description
This 1s a 200+ Exam for UCSB EEMB 2 Midterm 1. It covers introductory ecology, focusing
on population dynamics, community structure, and foundational ecological theories. Key
topics include population growth models (exponential/logistic), species interactions
(competition, predation, mutualism), metapopulations, trophic levels, and biodiversity, often
requiring calculations for transfer efficiency and density.
Key Topics for Midterm 1
Fundamental Ecology Concepts: Definitions of ecology, biosphere components, and the
distinction between abiotic and biotic factors.
Population Ecology:
Growth Models: Understanding and calculating exponential and logistic growth, including
parameters like
(intrinsic rate of increase) and
(carrying capacity).
Regulation: Density-dependent vs. density-independent factors.
Demography: Natality, mortality, immigration, and emigration.
Metapopulations: Basic modeling of population patches.
Community Ecology:
Species Interactions: Competition (intra/inter-specific), predation, and mutualism.
Structure & Diversity: Species richness, evenness, and the Shannon-Weaver Diversity Index.
Trophic Structure: Trophic levels, energy acquisition, and top-down vs. bottom-up effects.
Succession: Primary, secondary, and
1
, -selection strategies.
Quiz_________________?
What is ecology? -
Answer
The distribution and abundance of organisms and WHY (what
factors, interactions, etc.)
Quiz_________________?
What book did Aristotle write that contributed to ecology?
What did he contribute? -
Answer
Historia Animalium; he was able to explain 'divine' events with
natural processes
Quiz_________________?
What book triggered the environmental movement of the 60's,
and the first time ecology was seen as rigorous and serious? -
Answer
Silent Spring by Rachel Carson
2
, Quiz_________________?
Any environment is made up of its ________________ and
________________ components. -
Answer
Biotic and abiotic
Quiz_________________?
What are abiotic components? Give examples. -
Answer
Nonliving components of an environment, e.g. temperature, soil
composition, etc.
Quiz_________________?
What are biotic components? Give examples. -
Answer
Living components of an environment, e.g. competition,
predation, etc.
3
, Quiz_________________?
We learn less and less as we move (lower/higher) on the
biological scales. -
Answer
Higher
Quiz_________________?
What is a population? -
Answer
Two or more individuals of the same species in a defined
geographical location
Quiz_________________?
What is a community? -
Answer
Two or more populations of two or more different species
living in a defined geographical location
4