Questions for an Ecology assignment. These questions are based on the article: Barbosa, Pedro, et al. "Associational resistance and associational susceptibility: having right or wrong neighbors." Annual review of ecology, evolution, and systematics 40 (2009): 1-20.
1. Describe an example the authors provided for a way that competition with a neighboring plant can alter its susceptibility to herbivores. Can you think of another instance in which competition between focal plants and neighbor plants might lead to either associational resistance (AR) or associational susceptibility (AS)? Or vice-versa-- herbivory can alter competitive interactions between plants as well! Please describe one case.
2. The meta-analysis found that diet breath (an insects’ degree of specialization) had little influence over the likelihood of AR or AS on plants (Figure 2c). However, their evaluation of ‘neighbor affects’ across generalists and specialists did not consider several potentially important interacting factors, including relative plant abundance and biomass of both the neighbor and focal plant, as well as taxonomic relatedness of the neighboring plant. How might these factors interact with herbivore diet breadth to alter a plants’ susceptibility? (choose one)