The grassland ecosystem of Montana is being studied for its resilience as the population of its keystone species, the prairie dog, has declined in recent years. Four plots are established, two that still contain populations of prairie dogs and two that no longer have prairie dogs due to outbreaks of plague. A survey is done measuring the total number of producers (number of plants) and the diversity of producers (number of species) of each plot. The data are summarized in the table.

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Conservation Biology

The study of how to prevent the loss of biological diversity on the planet is called conservation. Biological diversity, also termed biodiversity, consists of various life forms found in a specific location or across the entire planet, including ecosystems, species, populations, and genes. Conservation thus aims to protect the diversity of life at all levels of biological organization.