Class Notes (834,353)
Canada (508,492)
Biology (2,156)
BIO205H5 (180)
Lecture 19

BIO205 Lecture 19 (Nov 12, 2012) - EDIT.docx

2 Pages
Unlock Document

Christoph Richter

BIO205 Lecture 19 - Previously from lecture 18 o We can hypothesize how communities change based on the disturbance frequency  Every arrow represents a disturbance  Every colour curve represents a different species  With frequent disturbances, very few species survive o There is a problem with intermediate disturbances  Some species can deal with it and some can’t o Caribous don’t like any of these  Survey lines  Open cuts for power lines  Mining stations - Lecture 19: communities over large scales - Communities form landscapes o Different communities are not isolated o Ex. Pelee Island - Communities are patchy o Continuous even distribution - Glaciers left their marks o Esker o Made by rivers flowing in or under glaciers - Past influences can be human-made o Paired forested areas compared in Northern France o One of the pairs had higher pH, phosphorus and plant richness o Each pair had one area that had been used for agriculture o Agricultural areas usually have higher pH  Some fields have been abandoned for hundreds of years but even now, you can still see the differences in the soil in terms of pH level and composition - There are also current influences o American alligator o Dig holes to collect water for dry season o Ecosystem engineer - Humans have also current influences o Patches on mountains - Landscapes are made up of patches of communities and ecosystems
More Less

Related notes for BIO205H5

Log In


Join OneClass

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

Sign up

Join to view


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.