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Table III. Evaluation of Program Effects on the Piping Plover <br />19 <br />Potential Sources of Current and <br />Possible Analysis <br />Future Data <br />Methods' <br />Time Frame <br />b) Vegetation Encroachment <br />0 Pre- and post - land <br />Data Needs- vegetation: <br />Transects at selected areas affected <br />Sediment /vegetation model <br />management <br />Plant class composition (grass, forbs, <br />by land management activities <br />0 Trend analyses <br />activity; post- land <br />woody) <br />Permanent transects <br />management <br />Height <br />repeated annually for <br />Density <br />8 years <br />Data Needs: <br />Records from USGS gaging stations <br />0 Aerial photographs <br />Monitoring on a <br />Discharge <br />Records of timing and magnitude of <br />0 Videography <br />continuing basis <br />Quantity, distribution of bare sandbars <br />EA releases <br />0 Sediment/vegetation model <br />Occurrence of pack ice on river <br />c) Project level land management <br />pre- and post- land <br />Data Needs- channel morphology: <br />Transects across selected areas <br />Trend analyses <br />management <br />Water Depth <br />affected by land management <br />Sediment/ vegetation <br />activity; post- land <br />Active channel width <br />activities- upstream, through and <br />model <br />management <br />Wetted width <br />downstream of treatment area <br />repeated annually <br />Height of sandbar (cleared) <br />Volume of sediment added (island <br />leveling, channel widening) <br />Data Needs- sandbar /shoreline vegetation: <br />Transects across selected areas <br />Trend analyses <br />pre -post land <br />Plant class composition (grass, forbs, <br />affected by land management <br />Sediment/ vegetation <br />management <br />woody) <br />activities- upstream, through and <br />model <br />activity; post - land <br />Height <br />downstream of treatment area <br />management <br />Density <br />repeated annually <br />Data Needs: <br />0 USGS gaging station (nearest to <br />concurrent with <br />Discharge <br />treatment) <br />above measurements <br />• Along permanent transects <br />B. Program effects on Piping Plover (Species Response) <br />1) Land and water management/ breeding bird <br />distribution and abundance <br />19 <br />