. Bulletin. Natural history; Natural history. 36 Illinois Natural History Survey Bulletin Vol. 32, Art. I plants and the secondary importance of marsh plants in the diet of this species. Green-winged teal numbers were in- fluenced by the relative abundance of all wetland plants (Fig. 17) rather than CO CQ 3 UJ a. oo >- <c I. -I r I „^ AQUATIC PLANTS PER HECTARE OF LAKE BASIN Fig. 18.—The linear relationship between the yearly abundance of American wigeons and that of aquatic plants in the Illinois River Please note that these images a
. Bulletin. Natural history; Natural history. 36 Illinois Natural History Survey Bulletin Vol. 32, Art. I plants and the secondary importance of marsh plants in the diet of this species. Green-winged teal numbers were in- fluenced by the relative abundance of all wetland plants (Fig. 17) rather than CO CQ 3 UJ a. oo >- <c I. -I r I „^ AQUATIC PLANTS PER HECTARE OF LAKE BASIN Fig. 18.—The linear relationship between the yearly abundance of American wigeons and that of aquatic plants in the Illinois River 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. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
Size: 1540px × 1622px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
