What is the theme in A Sand County Almanac by Aldo Leopold?

Appreciation is another theme in this story. People don't appreciate what they don't know or understand. While a person from the city can enjoy wild flowers, he or she doesn't understand how they got there or what the life cycle of the plant is unless they take measures into their own hands and learn about the plants. There are so many different plants in the world that the smallest usually goes unnoticed because it isn't spectacular. People love beautiful flowers with spectacular blooms. The less extraordinary the bloom, the more ordinary the plant and the less people will care if it becomes extinct.