Class Notes (836,414)
Canada (509,777)
Biology (2,437)
Kim Dej (29)
Lecture

competition (1).docx

3 Pages
121 Views
Unlock Document

Department
Biology
Course
BIOLOGY 2F03
Professor
Kim Dej
Semester
Fall

Description
October 15 , 2012 Biology 2F03: Fundamental and Applied Ecology Competition (1) Competition - resource limitations and intraspecific competition - the niche - mathematical and laboratory models produce insights - competition affects niches in ecological and evolutionary time Question - would all species have the same carrying capacity, K, when they live in the same habitat/place: no Population density, soil nitrogen, and grass size - nitrogen is a limiting nutrient for the grass S. nutans - S. nutabs was grown at high and low densities of nitrogen availability - Low densities: getting bigger as you added more nitrogen - Nitrogen liberating only if you were in low densities - Nitrogen not liberating if you grow in high densities - With N available, plants grow large when grown at low density - Okabts fail to gain size when grown at high density - Conclusion: intraspecific competition Question - if intraspecific competition matters, what would be its ecological outcome, particularly among plants? - Plants produce to many seeds to have them successfully survive, stunted, would die very easily, would not reproduce Self-thinning in plant populations - assume plants start at some density - many of the small and crowded plants die - consequence: population will move to lower density, producing healthier and stronger individuals - populations A, B, C and D all converge on a state of low density and high total biomass - start with low number: the population will move from A to large biomass - if you start at high density, plants will initially be small
More Less

Related notes for BIOLOGY 2F03

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit