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Table II. Evaluation of Program Effects on Interior Least Tern <br />Potential Sources of Current I Possible Analysis <br />and Future Data Methods' Time Frame <br />Data Needs: <br />USGS gaging station (nearest to <br />pre -post land <br />Discharge <br />treatment) <br />management <br />• Permanent transects <br />activity; post- land <br />management <br />repeated annually <br />3) Sufficient habitat for self - sustaining, self - <br />maintaining population <br />B. Program effects on Least Terns (Species <br />Response) <br />1) Land and water management/ breeding bird <br />distribution and abundance <br />Data Needs: <br />Breeding bird surveys in the central <br />Trend analyses <br />Annually, 10 -13 <br />Number of breeding pairs <br />Platte (riverine and sandpit) <br />years <br />Distribution of breeding pairs <br />2) Program effects of changes in land and flow <br />management on tem reproductive rate <br />Estimate of frequency of nest inundation: <br />• USGS gaging stations <br />Videography <br />3 or more time per <br />Discharge <br />0 Breeding bird surveys in the central <br />summer; 10 -13 years <br />Timing of nest initiation <br />Platte (riverine and sandpit) <br />Estimate of: <br />Breeding bird surveys in the central <br />Annually <br />Nest success <br />Platte (riverine and sandpit) <br />Fledge success <br />' Data analysis will be developed in conjunction with R2 -1 study protocols <br />2 Location and type of all permanent transects (sediment, vegetation, channel morphology) will be chosen /coordinated for efficiency of data collection and to take best advantage <br />of historical data <br />17 <br />