Lawn A was planted with a single species of grass, which covers 90 percent of the lawn.The other plant species there include five species of weeds, each covering 2 percent of the lawn.Lawn B has the same six species, but with percentages of 75 percent grass and 5 percent for each of the five weeds.How do species richness and species evenness of the two lawns compare?

Question

Quizplus · Accepted Answer

Both lawns have the same number of species (six), so they have equal species richness. However, lawn B has a more even distribution of species, as each species covers 5% of the lawn compared to only one species covering 90% in lawn A. Therefore, lawn B has greater species evenness.

Lawn a Was Planted with a Single Species of Grass