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Comprehensive Study Guide: Ecology, Evolution, and Diversity

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Introduction to Ecology

  • Levels of Ecological Study
    05:01
  • Introduction to Ecology Example 1
    02:31
  • Environment vs. Habitat vs. Niche
    01:57

Introduction to Population Ecology

  • Factors Affecting Population Size (N)
    01:48
  • Population Size & Density
    01:52
  • Introduction to Population Ecology Example 3
    01:51

Life History

  • Life History
    04:01
  • Life History: Population Reproductive Strategies
    02:51
  • Life History Example 1
    02:46

Population Demography

  • Life Tables
    03:49
  • Population Demography Example 1
    02:18
  • Survivorship Curves
    02:54

Factors Limiting Population Growth

  • Density-Dependent Factors
    02:37
  • Factors Limiting Population Growth
    00:51
  • Density-Dependent vs. Density-Independent Factors
    03:14

Introduction to Population Growth Models

  • Introduction to Population Growth Models Example 3
    02:52
  • Introduction to Population Growth Models
    01:09
  • Assumptions of Population Growth Models
    03:29

Exponential Population Growth

  • Exponential Population Growth Example 2
    07:34
  • Exponential Population Growth
    03:05
  • Exponential Population Growth Equations
    06:35

Logistic Population Growth

  • Summary of Key Features & Assumptions for Each Population Growth Model
    07:28
  • Logistic Growth in a Limited Environment
    05:00
  • Logistic Population Growth Example 1
    04:28

r/K Selection

  • r/K Selection
    04:08
  • r/K Selection Example 1
    02:01

Introduction to Community Ecology

  • Introduction to Community Ecology
    02:03

Introduction to Community Interactions

  • Overview: Types of Community Interactions
    02:55
  • Introduction to Community Interactions Example 1
    02:23
  • Introduction to Community Interactions
    01:57

Community Interactions: Competition (-/-)

  • Resource Partitioning (Partial Niche Overlap)
    03:57
  • Competitive Exclusion Principle (Complete Niche Overlap)
    04:23
  • Community Interactions: Competition (-/-) Example 1
    04:23

Community Interactions: Exploitation (+/-)

  • 1) Exploitation (+/-): Predation
    01:42
  • 3) Exploitation (+/-): Parasitism
    02:37
  • Community Interactions: Exploitation (+/–)
    00:49

Community Interactions: Mutualism (+/+) & Commensalism (+/0)

  • Positive Interactions
    02:56
  • Summary of Community Interactions
    01:52

Community Structure

  • Community Structure Example 3
    02:22
  • Community Structure Example 1
    03:37
  • Community Structure
    04:25

Community Dynamics

  • Disturbances Make Communities Dynamic
    03:37
  • Secondary Ecological Succession
    02:31
  • Effects of Early-Arriving Species on Late-Arriving Species
    01:34

Introduction to Terrestrial Biomes

  • Introduction to Terrestrial Biomes Example 2
    01:29
  • Introduction to Terrestrial Biomes
    01:55
  • Introduction to Terrestrial Biomes Example 1
    00:49

Plant Defenses

  • Herbivore Defenses
    05:37
  • Pathogen Defenses
    08:59

Overview of Animals

  • Overview of Animals - 2
    06:59
  • Overview of Animals - 5
    04:57
  • Overview of Animals - 3
    12:01

Porifera and Cnidaria

  • Porifera and Cnidaria
    10:20

Chordates

  • Chordates
    05:34
  • Bony Fish
    05:21
  • Tetrapods
    05:57

Primates and Homonids

  • Homonids
    11:30
  • Primates
    05:26

Introduction to Prokaryotes

  • Introduction to Archaea
    04:39
  • Prokaryotic & Eukaryotic Cells
    05:54
  • Features of Bacterial Cells
    03:54

Prokaryotic Cell Structure

  • Functions of Pili
    01:46
  • Pili
    01:02
  • Endospores
    05:35

Viruses

  • Virus Structure
    04:50
  • Lytic and Lysogenic Cycles
    08:04
  • Viroids and Prions
    04:22

Endosymbiotic Theory

  • Endosymbiotic Theory
    06:58

Introduction to Protists

  • What is a Protist?
    03:23
  • Introduction to Protists Example 1
    02:30
  • Introduction to Protists Example 2
    01:39

Evolution of Protists

  • Secondary Endosymbiosis Led to Several Eukaryotic Lineages
    02:37
  • Evolution of Protists Example 1
    01:43
  • Primary Endosymbiosis Gave Rise to Eukaryotes
    01:37

Land Plants

  • Land Plants - 4
    06:17
  • Land Plants - 2
    12:57
  • Land Plants - 3
    03:36

Nonvascular Plants

  • Nonvascular Plants - 2
    07:32
  • Nonvascular Plants - 1
    06:16

Seedless Vascular Plants

  • Seedless Vascular Plants
    06:08

Seed Plants

  • Seed Plants - 1
    06:26
  • Seed Plants - 3
    05:26
  • Seed Plants - 4
    10:21

Fungi

  • Fungi - 1
    08:59
  • Fungi - 2
    09:57

Fungi Reproduction

  • Fungi Reproduction - 2
    04:54
  • Fungi Reproduction - 1
    09:27
  • Fungi Reproduction - 3
    03:12

Introduction to Evolution and Natural Selection

  • Introduction to Evolution and Natual Selection Example 1
    03:22
  • Introduction to Evolution and Natual Selection Example 2
    04:28
  • Typological vs. Population Thinking
    03:56

Natural Selection and Evolution

  • Natural Selection Causes Adaptation
    07:48
  • Adaptation Improves Fitness
    02:57
  • Evolution can Occur Via Natural Selection
    04:32

History of Evolutionary Thought

  • Geological Thinking
    04:22
  • History of Evolutionary Theory Example 1
    02:45
  • Darwin and Wallace
    07:37

Natural Selection

  • Natural Selection Example 2
    05:11
  • Natural Selection: Observations and Inferences
    04:12
  • Natural Selection Example 1
    02:19

Evidence of Natural Selection

  • Natural and Artificial Selection
    03:41
  • Evidence of Natural Selection Example 1
    02:28
  • Evidence of Natural Selection
    04:25

Evidence of Evolution

  • Types of Homologies
    04:46
  • Evidence of Evolution Example 1
    02:27
  • Fossils
    06:11

Evolution of Populations

  • Evolution of Populations Example 1
    03:33
  • Introduction to Evolution of Populations
    05:14

Genetic Variation

  • Sources of Genetic Variation
    02:16
  • Sexual Reproduction and Recombination
    05:08
  • Mutations
    06:42

Genetics and Allele Frequencies

  • Allele Frequencies
    06:36
  • Mendelian and Population Genetics
    04:26
  • Genetics and Allele Frequencies Example 1
    02:56

The Hardy-Weinberg Principle

  • Predicting Allele or Genotype Frequencies Using Hardy-Weinberg
    03:31
  • Testing if a Population is in Hardy-Weinberg Equilibrium
    08:26
  • B. Calculating Allele Frequency from a Genotype Frequency
    03:20

Assumptions of the Hardy-Weinberg Principle

  • Five Assumptions of Hardy-Weinberg Equilibrium
    06:16
  • Assumptions of the Hardy-Weinberg Principle Example 1
    04:13

Non-Random Mating

  • Non-Random Mating
    04:09
  • Non-Random Mating Example 1
    04:19

Genetic Drift

  • Genetic Drift Example 1
    02:00
  • Genetic Drift Example 2
    02:37
  • Genetic Drift
    05:06

Gene Flow

  • Gene Flow Example 1
    04:34
  • Gene Flow
    01:43

Putting it All Together

  • Putting it All Together
    11:28

Introduction to Speciation

  • Introduction to Speciation
    03:03

The Biological Species Concept

  • The Biological Species Concept Example 3
    02:15
  • Prezygotic Barriers
    05:18
  • The Biological Species Concept Example 1
    01:27

Allopatric and Sympatric Speciation

  • Allopatric and Sympatric Speciation
    02:46
  • Allopatric and Sympatric Speciation Example 1
    04:25
  • Allopatric Speciation
    03:53

Hybrid Zones

  • Hybrid Zones Example 1
    02:37
  • Hybrid Zones
    04:38

Speciation Time Scales

  • Gradual Evolution vs. Punctuated Equilibrium
    03:23

Origin of Life

  • Origin of Life Example 1
    03:23
  • Events that Lead to the Formation of Cells
    06:38

The Fossil Record

  • Biases in the Fossil Record
    03:17
  • Fossils
    03:54
  • The Fossil Record Example 1
    02:59

History of Life on Earth

  • History of Life on Earth Example 1
    04:53
  • Geologic Record
    07:18

Extinctions

  • Cretaceous Extinction
    04:55
  • Extinctions
    04:48
  • Sixth Extinction
    02:29

Adaptive Radiation

  • Developmental Genes & Regulation
    06:12
  • Cambrian Explosion
    05:10
  • Adaptive Radiation Example 1
    06:17

Evolution of Complexity

  • Origin of Complex Traits
    06:15

Introduction to Phylogeny

  • Binomial Nomenclature
    02:32
  • Systematics
    06:57
  • Introduction to Phylogeny Example 1
    01:31

Phylogeny

  • Phylogeny Example 3
    04:12
  • Parts of a Phylogenetic Tree
    05:16
  • Phylogeny Example 1
    06:11

Building Phylogenetic Trees

  • Shared Derived Characters
    05:42
  • Parsimony
    06:46
  • Building Phylogenetic Trees Example 1
    04:35

Cladistics

  • Cladistics Example 1
    03:52
  • Monophyletic, Paraphyletic, & Polyphyletic Group
    06:37

Phylogenetics and Genome Evolution

  • The Molecular Clock
    05:13
  • Homologs: Orthologs & Paralogs
    05:29