YCT Multi-state Assessment February 1 0, 2003 



Conservation Activities 



A listing of potential conservation activities was provided to workshop participants. If any 

 conservation activity had been applied to any stream segment of a conservation population, that 

 activity was checked and linked to the conservation population (Table 5; Appendix A). Since we 

 did not specifically address the significance or effectiveness of various conservation activities, 

 we summarized these data only by the number of conservation populations affected by each type 

 of activity. For many conservation populations, especially those that occupied larger areas of 

 habitat, conservation activities may have only affected a portion of the population. 



Land and Resource Management Impacts 



Fishery professionals were asked to judge whether various land, water, and/or fish management 

 activities affected each stream segment and therefore the designated conservation population 

 (Table 6; Appendix A). Participants were asked whether each acdvity resulted in a "known", 

 "possible", or "no" (not checked) impact to the stream segment. Similar to the conservation 

 activities, we did not specifically ask how many miles of habitat occupied by conservation 

 populations each type of management activity influenced. Thus, we also summarized these data 

 only by the number of conservation populations affected by each management activity. For 

 many conservation populations, especially those that occupied larger areas of habitat, 

 management activities (land uses) likely only affected a portion of the population. Participants 

 varied in how they rated whether a stream segment was impacted by a particular activity, 

 especially for stream segments that included relatively large areas of connected habitat and a 

 particular acdvity was occurring only on a portion of the occupied segment. Thus, ratings for 

 land management effects on larger meta-populations were inconsistently applied. 



Summaries from Database 



Data provided by the fishery professionals were summarized directly fi-om the Microsoft Access 

 database using queries within Access. Summarized data were then copied to Excel spreadsheets 

 where these data were further reduced to produce summary tables and figures. Most summaries 

 within this report are summarized over the enfire historical range of YCT. Additional summaries 

 by 4 code HUC and associated conservation populations are provided in appendices (Appendix 

 F). 



Summaries that Linked Database to GIS Layers 



To better assess exisfing regulatory mechanisms associated with land management for the 

 streams currently occupied by YCT we used Arcview to select ("clip" feature in Arcview) stream 

 segments occupied by YCT that were within designated Forest Service wilderness areas, 

 designated Forest Service "road-less" areas, and USDI National Parks. After clipping the stream 

 segments occupied by YCT using the above polygon layers we computed the length of streams 

 occupied by YCT that were within the above land management designations using a query in 

 Arcview ("[Shape]. retumlength" query). 



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