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Lecture

Lecture #1 Notes

7 Pages
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Department
Biology
Course Code
BIO205H5
Professor
Maria Arts

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Lecture #1: Intro to Ecology
Pg 1
Slide 3
-Ecology: the study of relationships between organisms and their environment
Slide 4:
-More specifically: ecology is the scientific study of interactions that determine
the distribution and abundance of organisms
Slide 5:
-To determine the causes of distribution and abundance of organisms
Slide 6:
-Many fundamental questions addressed in terms of abundance and
distribution
Pg 2
Slide 2:
-Multidisciplinary; biological disciplines related to ecology
Physiology, genetics, behaviour and evolution
Slide 3:
-Adaptation to environmental change is the result of evolution by natural
selection
-Evolution: change in genetic structure over time
For evolution to occur, there must be variation
-Individuals express their genome in their phenotype
Phenotypic plasticity: a variation/ variable expression of the phenotype in
response to variability in environmental conditions
Genetic information is the same
Environment causes variation in phenotypic nature/expression
Slide 4:
-Environmentalism is a concern
-Environmental science: the analysis of human impact on the natural
environment
-Environmentalism: a social movement attempting to minimize human
impact on our planet
Slide 5:
-We had this belief that we could do anything to our planet, and nothing
would happen WRONG
Pg 3
Slide 2:
www.notesolution.com
-Outbreaks of pests , such as locusts in North America, fall into the realm of
applied ecology
Slide 3:
-Hippocrates and Aristotle (800-400 BC)
-Rabbits made an absolute dessert because the population exploded, therefore
this shows this shows that we need predators in order to keep some species
under control
Slide 5:
1. Individual organism
2.Population
3.Community
4.Ecosystem
5.Landscape
6.Biome
7.Biosphere
Slide 6:
-Organismal ecology : concerned with evolutionary adaptations ( anatomy,
physiology, etc) that enable individual organisms to meet the challenges
posed by their environments
-Birth to death process of organism
-Organismal ecology focuses on individual organisms
Pg 4
Slide 1:
-Population ecology:
Concerned with populations
Populations: groups of individuals of the same species living in the same
area
-Population ecology concentrates primarily on factors that affect population
density and growth; rates of birth and death, and distribution of individuals
Populations interact with one another (e.g. predation and competition)
Slide 2:
-Community ecology: concerned with communities; assemblages of populations
of different species
-Focuses on how interactions between species affect community structure and
organization
-Factors that influence the relative abundance of a species
Slide 3:
-Ecosystem ecology:
Concerned with ecosystems
www.notesolution.com

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Description
Lecture #1: Intro to Ecology Pg 1 Slide 3 - Ecology: the study of relationships between organisms and their environment Slide 4: - More specifically: ecology is the scientific study of interactions that determine the distribution and abundance of organisms Slide 5: - To determine the causes of distribution and abundance of organisms Slide 6: - Many fundamental questions addressed in terms of abundance and distribution Pg 2 Slide 2: - Multidisciplinary; biological disciplines related to ecology Physiology, genetics, behaviour and evolution Slide 3: - Adaptation to environmental change is the result of evolution by natural selection - Evolution: change in genetic structure over time For evolution to occur, there must be variation - Individuals express their genome in their phenotype Phenotypic plasticity: a variation variable expression of the phenotype in response to variability in environmental conditions Genetic information is the same Environment causes variation in phenotypic natureexpression Slide 4: - Environmentalism is a concern - Environmental science: the analysis of human impact on the natural environment - Environmentalism: a social movement attempting to minimize human impact on our planet Slide 5: - We had this belief that we could do anything to our planet, and nothing would happen WRONG Pg 3 Slide 2: www.notesolution.com
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