Functional diversity refers to the variety of traits that species possess, which can influence their roles and interactions within an ecosystem.

Functional diversity contributes to ecosystem functioning by increasing the efficiency of resource use, reducing the risk of species loss, and increasing the stability of ecosystems.

Food production is not an ecosystem service, as it is a direct product of human activity rather than a natural process.

Functional diversity can be used to manage ecosystems by identifying key species for conservation, developing strategies to restore degraded ecosystems, and designing agricultural systems that mimic natural ecosystems.

Climate is not a factor that can influence functional diversity, as it is a global phenomenon that affects all ecosystems equally.

Functional diversity is a prerequisite for ecosystem services, as the variety of traits that species possess enables them to perform a wide range of functions that contribute to ecosystem functioning.

Habitat preference is not a functional trait, as it does not directly influence the role or interactions of a species within an ecosystem.

Functional diversity can be measured by calculating the diversity of functional traits in an ecosystem, as this provides a quantitative assessment of the variety of roles that species play.

Food production is not an ecosystem service provided by forests, as it is a direct product of human activity rather than a natural process.

Functional diversity can be used to predict the impacts of environmental change by identifying species that are most vulnerable to environmental change, developing models that predict how ecosystems will respond to environmental change, and designing strategies to mitigate the impacts of environmental change.

Pollution is not a factor that can affect the functional diversity of an ecosystem, as it is a human-made phenomenon that does not directly influence the variety of traits that species possess.

Functional diversity can be used to restore degraded ecosystems by identifying key species for reintroduction, developing strategies to improve habitat structure, and designing management practices that promote functional diversity.

Producers are not a functional group, as they do not share a common function or role within an ecosystem.

Functional diversity can be used to design sustainable agricultural systems by selecting crop varieties that have a wide range of functional traits, designing cropping systems that mimic natural ecosystems, and managing agricultural landscapes to promote functional diversity.

Species richness is not a functional diversity metric, as it does not take into account the variety of traits that species possess.