Annelid Earthworm

Based on these data, how has the collapse of cod affected the trophic position of gray seals? Calculate the Shannon index (H’) and Chao’s estimator for Species Richness for each of these three samples.

ASSIGNMENT Schmitz (1998) found that trait-mediated indirect interactions (TMII) were stronger than density-mediated indirect interactions (DMII) in a spider-grasshopper-grass system. Rinehart et al. (2017) ran a similar experiment with ladybeetles (predator) – scale insects  – cordgrass . The plot shows the density of the prey  over time. Does it show evidence for a trait-mediated effect […]

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