Ecosystems are impacted by living organisms like plants, animals, and people but also by nonliving physical and chemical factors such water and soil chemistry, climate, and the weather. These nonliving, or abiotic, components of an ecosystem help to shape what habitats will dominate an area and also what plant and animal species will live there. Throughout the park, monitoring of these abiotic features is an important part in protecting the natural integrity of the area.
Did You Know?
Frederick Law Olmsted Sr. wrote to George Perkins Marsh in 1857, asking his advice on promoting "free soil" settlement in Texas to challenge the westward expansion of slavery. Strongly anti-slavery, both men would also champion land stewardship and public access to places like Yosemite Valley.