Connectance, interaction strength and omnivory affect how food webs respond to perturbations.
May's (1972) work suggested large random webs are less stable, but real webs have structure: compartments, weak links and omnivory that stabilise.
Stability can mean persistence, resilience or variability. Weak links and compartments buffer shocks. Loss of highly connected species is more damaging.
Key idea: structure matters as much as size.
Connectance, interaction strength and omnivory affect how food webs respond to perturbations.
Food Web Stability is one of the 54 topics in Ecology. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Plant-Pollinator Networks, Microbial Ecology, Landscape Ecology.
Weak interactions dampen oscillations.
Work through the Beginner topics in Ecology first, such as Ecology, Ecosystem, Biotic and Abiotic Factors, then return to Food Web Stability. Advanced topics assume the Intermediate vocabulary.
The closest topics to Food Web Stability are Plant-Pollinator Networks, Microbial Ecology, Landscape Ecology, Species Diversity. Comparing them side by side is a good way to see how the ideas connect.
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Food Web Stability. To practise the whole of Ecology, use the Ecology quiz.
Food Web Stability: Connectance, interaction strength and omnivory affect how food webs respond to perturbations. Plant-Pollinator Networks: Mutualistic webs typically nested, with specialists interacting with subsets of generalists' partners. Read both side by side and note what each one explains.
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Plant-Pollinator Networks and explain the difference aloud. Finally, take the Ecology quiz and come back to this page for any question you miss.
Mutualistic webs typically nested, with specialists interacting with subsets of generalists' partners.
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