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Populations and Ecosystems (The Structure of Population (Age Distribution:…
Populations and Ecosystems
Concepts
Biotic componets of the habitat
Abiotic components of the habitat
Plants in relation to their habitats
The Structure of Population
Age Distribution: Demography
also called Age Composition, in population studies, the proportionate numbers of persons in successive age categories in a given population.
r- selection
tends to favor individuals that reproduce early, quickly, and in large numbers
Geographic Distribution
the natural arrangement and apportionment of the various forms of animals and plants in the different regions and localities of the earth.
K- selection
tends to favor individuals that successfully compete for resources and produce few, slowly developing young, and results in a stable population of long-lived individuals.
The Structure of Ecosystems
Species Composition
refers to the contribution of each plant species to the vegetation.
Trophic Levels
The trophic level of an organism is the position it occupies in a food web
Temporal Structure
the sequence in which the exploiter and the mutualist interact with their common, shared partner while it is offering mutualistic commodities
Physiognomic Structure
Physiognomy is a combination of the external appearance of vegetation, its vertical structure, and the growth forms of the dominant taxa. Physiognomy is an emergent trait of the community.
https://www.youtube.com/watch?v=RBOsqmBQBQk
https://www.youtube.com/watch?v=E8dkWQVFAoA
https://www.youtube.com/watch?v=LVJ5BKcAhAg
https://www.youtube.com/watch?v=kuEe4376il8
