7925 - Laserfiche WebLink

Home Browse Search

proposed functional classification of macroinvertebrates should include indicator and keystone species; (13) a substrate index shoudl be used as long .. as it does not obscure the primary data; and (14) the present IFG Incremental Methodology should be modified to incorporate variables of stream biology and ~ the state of the stream ecosystems as criteria for fish habitat, To meet the need for understanding relationships between stream flow and recreation, the work by Anas, et al" 19791 on behavioral demand assessment was referenced by the instream recreation module. Key concepts extracted from the work includes: (1) recreation behavior is complex, voluntary, and discretionary, which suggests that it may be quite sensitive in sometimes unexpected ways to environmental change; (2) response of recreationists to stream flow may vary by activity and by market segment; (3) some impacts may be more important than others depending upon the market setments and phychological outcomes affected; (4) impact on psychological outcomes may occur without obvious changes in manifest behavior; and (5) the state-of-the-art of explaining relationships between environmental conditions and recreation behavior and benefit is primitive, While hydraulic measurement and simulation may be well developed in terms of proven theories and standard methods and measures, this is not so for prediction of recreation behavior. The workshop raised several questions and criticism of the incremental methodology. . The criticisms are: (1) the attempt to assess the impact of hydraulic characteristics of stream flow on certain instream recreation activities is, at present, too narrow in scope; (2) the methodology has been inadequate in examining the structur of recreation, i.e., the likelihood that . ..J 1 / See reference of Module IV--The Relationships Between Recreatioh and Instream Flow of this report. 21