BIO120H1 Lecture Notes - Climax Community, Pioneer Species, Metapopulation
36
BIO120H1 Full Course Notes
Verified Note
36 documents
Document Summary
Fender"s blue butterfly depends on one particular plant kincaid"s lupine. Only lays eggs on these plants where caterpillars grow up feeding on it. Only exist on prairie patches or die without reproducing. Larger patches can support a population since when they disperse they"d still end up in the area within the patch. Smaller ones go extinct migration out of patch to agriculture patches without the kincaid"s lupine. Small patches near larger ones can sustain due to migration. All depends on quality, size and proximity of patches as well as dispersal. Populations are not easily driven to extinction due to non-equilibrium conditions. Certain species can manage in a certain patch. Patterns of dispersal (r and k species) R species weedy plants good at dispersal with high reproduction rate semelparous. K species - more investment in somatic growth, shade tolerant, slow growth iteroperous. Metapopulation theory if death rate = migration rate then the metapopulation will exist indefinitely.
