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EESC04H3 Lecture Notes - Mariana Trench, Bolete, Biogeography

Environmental Science
Course Code
Kathleen Smith

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EESC04H3 Lecture 1
Goals of Biogeography
Laws and concepts that explains the bigogeographic processes and account for biotic distributions
Provide baseline information (ecologist) talk more about landscape level and infer what’s impt. In
determining those laws and concepts spatial and temporal distribution of organisms can we make this
prediction to conserve and manage Earth’s biotic resources and heritage.
Investigation of symbioses plant and insects
Poison IVY !!!
Pants just avoid plants with leaves in groups of 3 for now.
What is biogeography?
Study of biological patterns and processes past present future occurring over broad geographic and
temporal scales
Biogeography - study og geographical distribution of organisms their habitats ecological biogeographic
Habitat how organisms survive and change their habitats
Local change continental drifts and biological change
What is biodiversity?
Variety of life forms together with abundance and distribution in time and space. Biodiversity is often
used as a measure of health of biological systems.
Biodiversity measured in variety of ways (species richness,eveness, abundance)
Modulation reduction in biodiversity
Assumption - process interconnected we believe that biodiversity is good inherently there is a general
understanding that we are changing it homogenizing it. Little more stable if diverse. Presume
biodiversity is healthy. But there is a limit to that.
Spatial distribution in diversity must be appropriate to. Making changes but don’t know the impacts of
its changes.
Species richness how many diff.species in a specific area (pool)
Eveness spread out cluster of one species or little spread out species
What organisms are found where?
Darwins theory of selection
Bolete part of mushroom that reproduce
Fungi cacti
Dark diversity missing
Unknown diversity
Mariana trench
Pacific ocean south of Japan
Black smokers
Deepest pt. no light high pressure acidic toxic hot yet there is organisms in here
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