BIOLOGY 2F03 Chapter Notes - Chapter 13: Interspecific Competition, Intraspecific Competition, Damselfish
20 Mar 2017
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Chapter 13 texbook notes: commensalism: no harm to one species, but a huge benefit to another, amensalisms: harming another while not receiving harm or benefit from the one harmed. Individual damselfish maintain possession of their territories through ongoing interference competition: resource limitation for them: limited supply of suitable space for their territories, engage in intra and interspecific competition interference competition: direct aggressive interactions between individuals. Field and mesocosm studies show that resource limitations and competition are widespread. 1/2 ratio of plant biomass increase to density decrease: the higher the population density you start at, the faster you need to perform self-thinning, there can be significant deviance from this rule. 3/2 self-thinning rule: average weight of individual plants plotted against density. Intrusion pressure based on age of the territorial male where oldest and youngest most likely to be intruded on. Site- and experiment- specific variation might obscure any overall patterns which are or aren"t occurring.
