I noticed a greater population of birds and more variety of plants. Since my viewing is limited to outside the fence, I was only able to observe cottonwood, willow, Quercas labata and Lupine. I did see some nonnative shrubs, similar to those found at Putah creek. The types of birds found in this area are Black Phoebes, European Starlings and Swainsons Hawk. .
The livestock holding pens is to the greatest extremity of human modification. Deforestation of hundreds of acres is used for agricultural and farming purposes. These alien species eat all the vegetation and does not allow for new life to fully grow. At the holding pens, sheep and cow are observed. Very little wildlife habitat, except for the muskrats, surround the livestock area suitable only for domesticated animals. Vegetation, such as grasses, shrubs and trees are virtually nonexistent except for the few people have planted. It is obvious that alien species highly dominate this area. .
The University Arboretum is dominated by pavement, grass, flowers and benches. The lower portion of the arboretum water is green and murky indicating pollution caused by mallards, pied-billed grebe and human modifications. Vegetation is not plentiful because of restricted wildlife habitat. The lower region of the arboretum contain more alien species than the native (I just classified cottonwood). The gardens, which contain over 4,000 kinds of trees and plants promotes plant diversity awareness and advancement of research studies.
The obvious "alien" invaded area is the Arboretum and livestock center. The Putah Creek Reserve and Speith Reserve contain native and non-native plants regulated by the UC Research team in efforts to control invasive species. Invasive species are an economical and ecological problem. It is economical in that the governor must spend millions of dollars to restore lands damaged by invasive species. In an ecological sense, foreign species reduce biodiversity, damage habitat and challenge future generations of plants and animals.