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This investigation focused on large-scale vegetation patterns related to the physical formation of delta-backwater landforms and their dynamic response to short- and long-term fluctuations in reservoir pool elevations. Hybrid plant communities have established, expanding available habitat at the reservoirs we examined. Some of this new habitat appears to be of high quality with an abundance of native species, whereas other reservoirs appear to support primarily non-native species. Further, sustained, climate-driven declines in pool elevations at Lake Powell, Lake Mead, and Elephant Butte Reservoir are initiating new vegetation establishment processes and subjecting established vegetation to stress and mortality. Given the expanding presence of invasive, non-native species across ecosystems world-wide, water management actions are needed that would favor the establishment and persistence of native species and improve plant community responses to projected climate warming. 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The processing included fiducial mark placement, alignment, bundle adjustment, and error reduction. The mosaic was then geo-referenced in ArcPro using a spline transformation to ensure the finest referencing. The purpose/scope of the imagery data is to determine, by visual interpretation; large-scale vegetation patterns and physical formation of delta-backwater landforms. QAQC of this dataset included an internal visual inspection of the imagery for geometric anomalies during the alignment and spot checks of georeferencing by comparing landmarks and other features to imagery datasets in the area. The quality of the georeferencing is considered a use limitation due to the natural relief in the study area and changes to the landscape since 1953. The accuracy of feature locations will begin to decline in locations away from the river channel. The margin of error in geo-referencing is +/- 40 feet.", "itemRecordStatusId":1, "isModeled":false, "hasProfile":false, "disclaimer":"The findings and conclusions of this work are those of the author(s) and do not necessarily represent the views of the Bureau of Reclamation.", "sourceCode":null, "locationSourceCode":null, "externalDataUrl":null, "parameterSourceCode":null, "modelNameSourceCode":null, "temporalStartDate":null, "temporalEndDate":null, "spatialShortDescription":"Fort Peck Reservoir 1953, Northeast Montana", "publicationAuthor":null, "publicationEditor":null, "publicationPublisher":null, "publicationPublisherLocation":null, "publicationFirstPublicationDate":null, "publicationPeriodicalName":null, "publicationSerialNumber":null, "publicationDoi":null, "publicationVolume":null, "publicationIssue":null, "publicationSection":null, "publicationStartPage":null, "publicationEndPage":null, "createDate":"2023-11-15T18:56:14+00:00", "itemType":{ "_id":"MAP", "definition":"Map", "createDate":"2018-11-28T14:19:59+00:00" }, "matrix":{ "_id":26, "matrix":"Vegetation", "definition":"An assemblage of plant species and the ground cover they provide; the plant life of a region, taken as a whole.", "createDate":"2021-01-25T21:12:12+00:00" }, "spatialGeometry":{ "_id":3, "spatialGeometry":"raster", "definition":"a continuous coverage across an area", "createDate":"2018-06-22T12:47:44+00:00" }, "spatialResolution":{ "id":10, "spatialResolution":"other", "definition":"Dataset has a spatial resolution not listed elsewhere", "__initializer__":null, "__cloner__":null, "__isInitialized__":true }, "spatialTransformation":{ "_id":1, "spatialTransformation":"none", "definition":"a single observation or model output occurs for each spatial unit", "createDate":"2018-11-20T09:09:45+00:00" }, "spatialOpenDataURL":"https://rise-usbr.opendata.arcgis.com/maps/3d2234f8f1fd4d7c9529464e0f561be2", "metadataFilePath":null, "binaryFilePath":null, "updateFrequency":{ "_id":12, "updatefrequency":"as needed", "definition":"resource is updated as deemed necessary", "createDate":"2018-11-14T15:17:58+00:00" }, "updateDate":"2023-12-18T23:02:20+00:00", "verticalDatum":null, "dataStructure":"Geospatial", "itemStructureId":2, "parameterGroup":null, "parameterId":null, "parameterName":null, "parameterUnit":null, "parameterTimestep":null, "parameterTransformation":null }, "type":"CatalogItem", "relationships":{ "catalogRecord":{ "data":[ { "id":"/rise/api/catalog-record/7994", "type":"CatalogRecord" } ] }, "parameter":{ "data":[] } } }, { "id":"/rise/api/catalog-item/128565", "attributes":{ "_id":128565, "itemTitle":"S&T Project 20052 Geospatial Data: Fort Peck Reservoir 1977, Northeast Montana", "itemDescription":"Black and white aerial photos of the Missouri and Musselshell rivers collected August 18 1977, September 25 1977, and October 11&12 1977 at a scale of 1/84,000\r\n\r\nThese individual aerial photographs have been processed into a mosaic using Agisoft's Metashape photogrammetry software. 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