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I I I I I I I I I I I I I I I I I I I Endangered Fish Survey 13 Beliefs about the Decline of the Endangered Fish Beliefs about the decline of the endangered fish were measured through a series of statements, Nearly four-fifths (79%) of all respondents attributed the decline of these fish to water pollution (Table 2), About two-thirds believed that dams have either blocked the migration routes of the fish (62%) or reduced the river flows the fish need to survive (61 %). Fifl:y- five percent felt that the endangered fish could not compete with the non-native stocked fish or that other fish had eaten the native fish. Only 30% believed events in nature had contributed more to the decline than human activities, Table 2. Beliefs about the decline of endangered fish Beliefs about the Decline of Endangered Fish Agree Neutral Disagree Water pollution has contributed to the decline of endangered fish 79 4 17 Dams have blocked the migration routes of the endangered fish 62 16 21 Dams have reduced the river flows the endangered fish need to reproduce 61 14 24 Endangered fish cannot compete with non-native fish that have been stocked into the Colorado River Basin 55 20 25 Other fish have eaten the endangered fish 55 22 24 Events in nature have contributed more to the decline of the endangered fish than human activities 30 11 58 Cell entries are percentages For the six reasons given for the decline of the fish, agreement among the four groups was highest for water pollution as the probable cause (Table 3). A higher percentage of the environmental group members considered dams to be a contributing factor than the other three groups, Only 8% of the environmental group members believed that events in nature contributed more to the decline than human activities, compared to about a third of the respondents in the other three sampling strata, Table 3. Beliefs about the decline of endangered fish by group Elected General Beliefs about the Decline of Endangered Fish Officials Public Water pollution has contributed to the decline of endangered fish Dams have reduced the river flows the endangered fish need to reproduce Dams have blocked the migration routes of the endangered fish Other fish have eaten the endangered fish Endangered fish cannot compete with non-native fish that have been stocked into the Colorado River Basin 66 87 61 62 56 52 62 56 49 56 Events in nature have contributed more to the decline of the endangered fish than human activities 32 32 Cell entries are the percentage of each group "agreeing" with the statement Environmental Anglers Groups 73 93 55 78 61 79 55 56 54 65 36 8