An exclosure is used in deer studies primarily to allow comparison of forest regeneration by excluding deer. Which is the best description?

• A. An area fenced to exclude deer for regeneration comparisons.
• B. An area open to deer for increased grazing.
• C. A trap for capturing deer for studies.
• D. A barrier to protect from weather.

Answer: (A)

An exclosure is a fenced area that deer cannot enter so researchers can separate the effect of browsing on forest regeneration from other factors. By placing an exclosure next to a similar area where deer can browse, you can directly compare seedling survival, growth, and species composition with and without deer pressure. This setup isolates the impact of deer on regeneration, showing which species are most affected and how regeneration rates change when browsing is removed. It’s not meant to trap deer or to shelter plants from weather; those are different ideas, and it’s not an area left open for grazing.