. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 1927 1932 1937 1942 1947 1952 1957 1962 1967 1972 1977 1982 1987 1992 Census Year Numbers of Species Breeding Allerton Park ⢠600 ha. 0 I | I | I I T I I I I I I I I I I I I I I I I I I I I I I I I 1 I I I I I I 1 I I I I 1949 1955 1961 1967 1973 1979 1965 1991 Census Year -â¢- All Species -«â â Migrants Figure 25. Number of bird species breeding in two woodland units from 1927 to 1992. Relative A
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 1927 1932 1937 1942 1947 1952 1957 1962 1967 1972 1977 1982 1987 1992 Census Year Numbers of Species Breeding Allerton Park ⢠600 ha. 0 I | I | I I T I I I I I I I I I I I I I I I I I I I I I I I I 1 I I I I I I 1 I I I I 1949 1955 1961 1967 1973 1979 1965 1991 Census Year -â¢- All Species -«â â Migrants Figure 25. Number of bird species breeding in two woodland units from 1927 to 1992. Relative Abundances of Migrants Allerton Park - 600 ha. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Dept. of Energy and Natural Resources; Critical Trends Assessment Project. Springfield, Ill. : Ill. Dept. of Energy and Natural Resources
Size: 2585px × 967px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjecte, booksubjectecology, booksubjectman
