BIO120H1 Chapter 18: Bio Chapter 18.doc
36
BIO120H1 Full Course Notes
Verified Note
36 documents
Document Summary
Chapter 18 community structure (369-376, a; 377, b; 378-387, c; 388-389, a) His work focused mainly on vegetation and his theory offered that communities are discrete entities which are very strongly interdependent. His theory was held in very high regard for a while. Gleason contested this with the individualistic concept, defining a community as merely being a fortunate coming together of organisms which are able to coexist and tolerate similar environmental ranges. Ultimately, gleason"s theory was proven correct over many elements of clements". Community: the links between organisms as determined by feeding patterns, nutrient, cycling, energy flow, etc. It is complex interactions, both direct and indirect, with define communities. To visualize the geographic organization of a community, one can use a gradient of environmental conditions and plot the abundances of species across it. A set of species with overlapping distribution on the gradient is said to be a closed community.
