Topics for this lecture: 2) Equilibrium vs. non-equilibrium paradigms 3) Anthropogenic environmental change: Ecological dynamics: basic concepts Succession: change in community composition over time (e.g., following a disturbance) Ecological disturbance: major perturbation (in species composition, ecosystem function, etc.) – Disturbance agents = fire, wind, volcanism, etc. (see below for more) – Disturbances vary in magnitude and frequency – Intermediate-level disturbance regime continually "resets" the succession cycle in small areas ("patches") – This results in a shifting “patch mosaic” at the landscape scale Patch mosaic = set of habitat patches differing in species composition, age since disturbance, etc. – Mosaics classified by patch size & degree of heterogeneity (“coarse-grained,
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 11/22/2011 for the course ANT ANT2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.