BIOLOGY 2F03 Chapter Notes - Chapter 17: Isopoda, Keystone Species, Cleaner Fish
27 Jan 2016
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Feeding relationships are some of the most visible of community interactions. A food web summarizes feeding interactions within a community, can reveal basic aspects of community structure. Food webs are one example of larger category: ecological networks description of interactions that occur among co-occurring species in a community. Approach to identifying the key mechanisms that drive community structure is to determine whether any community assembly rates are taking place. Can occur within or across trophic levels. Describe the processes that limit or promote coexistence. 17. 1 ecological networks across trophic boundaries: food webs. A food web summarizes feeding relationships in a community. Tend to overemphasize the larger organisms while ignoring important organisms like algae and microbes. Most biomass in a community is consumed after death. By lumping some species together like invertebrates (snails, insects, spiders) with similar feeding habits the web becomes more comprehensible.
