. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. Carp Buffalo Drum Cattish Other Sturgeon/Paddlefish. Figure 22. Catch (top) and 1990 dollar value of catch (bottom) for the dominant fish groups exploited by commercial fishermen in Mississippi River from 1971 through 1991. Carp and buffalo make up the bulk of the fishery, with carp being the predominant species taken before 1978 and buffalo predominating in the late 1980s. Catfish and d
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. Carp Buffalo Drum Cattish Other Sturgeon/Paddlefish. Figure 22. Catch (top) and 1990 dollar value of catch (bottom) for the dominant fish groups exploited by commercial fishermen in Mississippi River from 1971 through 1991. Carp and buffalo make up the bulk of the fishery, with carp being the predominant species taken before 1978 and buffalo predominating in the late 1980s. Catfish and drum are the next most important groups with catfish increasing steadily in importance since 1980. Catfish are also an important gamefish species in many rivers, and the potential for conflicts between sport and commercial fisheries is perhaps highest with this group. Sturgeon, paddlefish, and a variety of other species (carpsuckers, bullheads, mooneye, etc.) contribute small but consistent catches to the fishery. Although catfish are caught in smaller quantities than carp or buffalo, they consistently contribute the most value to the fishery, followed by buffalo and then carp. The value of carp and drum to the fishery appears to be declining, whereas the value of sturgeon, paddlefish, and other species appears to have remained relatively stable over the past 20 years. Figure 23. Catch (top) and 1990 dollar value of catch (bottom) for the dominant fish species exploited by commercial fishermen in Illinois Riverfront 1971 through 1991. Buffalo is the predominant group caught in the Illinois River since the mid-1970s, and catches of this group increased dramatically in the 1980s declining after 1987. Carp were the second most abundant species in the fishery, although catfish (which have been steadily increasing in abundance) appear to be eclipsing carp in importance after 1988. Paddlefish and sturgeons do not represent a significant fishery in the Illinois River. Drum and other sp
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Keywords: ., bookcentury1900, booksubjecte, booksubjectecology, booksubjectman
