Center for Spatial Studies, University of Redlands 20020101 vector digital data https://wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/300_399/ds393.zip This data set shows all the on-water or very nearshore avian resources used for nesting and roosting by specific bird species of interest around the Salton Sea. Initial data capture was by Ken Sturm, but later supplemented by other workers, including Kathy Molina. GPS readings, text descriptions and imagery were used to generate polygons of interest. In some cases, the features were essentially points (specific duck blinds, or a partially submerged barge), but were converted into polygons by buffering. Other features were encompassed by GPS readings, and still others were interpreted from aerial imagery. All sites were attributed according to whether the site was used historically for nesting or roosting by any of a suite of specific bird species, and particularly to indicate if the site was used in 1999, when the surveys were made. These features also constitute on-water hazards for navigational purposes. Disclaimer: DFG received this dataset from the University of Redlands please contact them directly with any questions. This data was assembled to provide an overview of on-water or nearshore avian resources used by the birds around the Salton Sea, with special focus on roosting and nesting sites, especially snag fields, but also including duck blinds, submerged houses and barges, telephone polls, etc. These features also constitute hazards to navigation on the Salton Sea. Several different methods of data handling and normalization were used in the construction of this layer. Some snags were nearly too small to be seen, and their location can be considered approximated. In some cases, specific GPS points were captured for a given snag, but snags were generally aggregated into "fields", and studied collectively. Complete None planned -116.103454 -115.480193 33.530077 33.002112 ISO 19115 Topic Category biota location None Caspian Tern California Gull Snowy Egret Laughing Gull Cattle Egret Gull-billed Tern Brown Pelican Great Blue Heron avian resources Great Egret Black Skimmer snags population count rookeries bird survey Double-crested Cormorant Black-crowned Night Heron None Salton Sink Salton Sea Riverside County Salton Trough Imperial County California Salton Basin None Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data. Center for Spatial Studies, University of Redlands Lisa Benvenuti unknown US 909-748-8372 lisa_benvenuti@redlands.edu Redlands Institute, University of Redlands None Unclassified None Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333 The data set has been reviewed and is considered to be 99% accurate. Polygon and chain-node topology present. The data set has no generalization, and no data was intentionally omitted. Estimated to be +/- 40 feet 24 None This data was started by GPS readings, text descriptions and maps generated during field work by Ken Sturm of USFWS. This work was turned over to the Redlands Institute for automation. Some features, being point in nature, were buffered to provide a polygon area. Others snag fields were encompassed by Sturm in a boat. Other features were taken from text descriptions, and the features were then photo-interpreted from DOQQ imagery. All features were attributed according to historical usage of the site by various species of interest, and in particular, if the site was used by a given species in 1999. Other attributes indicate rookery name, alternate labels, and other information. Redlands Institute, University of Redlands Ken Althiser 909-335-5268 909-307-6952 Vector GT-polygon composed of chains 62 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds393 Polygon Attribute Table OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. SS_SNAGS_ SS_SNAGS_I ROOKERYNAM ROOKERYTEX FEATURENAM DOQQ_NAME Digitial Orthophoto Quadrangle upon which interpretation was done. Image interpretor (Ken Althiser) SOURCE Indicates which person/process is responsible for configuration of feature. GPS, photointerpretation, field work LABEL Indicates which features should be labeled for cartographic purposes. Map producer (Ken Althiser) GREATBLUEH GREATEGRET Indicates whether Great Egrets have utilized the site historically. Ken Sturm and Kathy Molina DCCORMORAN CASPIANTER BLACKSKIMM BROWNPELIC CATTLEEGRE GULLBILLED SNOWYEGRET Indicates whether the site has been used historically by the Snowy Egret. Ken Sturm and Kathy Molina BCNIGHTHER CALIFORNIA GBH1999 Indicates whether the site was used by Great Blue Herons in 1999. Ken Sturm and Kathy Molina GE1999 Indicates whether the site was used by Great Egret in 1999. Ken Sturm and Kathy Molina DCC1999 Indicates whether the site was used by Double-crested Cormorants in 1999. Ken Sturm and Kathy Molina CT1999 Indicates whether the site was used by Caspian Terns in 1999. Ken Sturm and Kathy Molina BS1999 Indicates whether the site was used by Black Skimmers in 1999. Ken Sturm and Kathy Molina BP1999 Indicates whether the site was used by Brwon Pelicans in 1999. Ken Sturm and Kathy Molina CE1999 Indicates whether the site was used by Cattle Egrets in 1999. Ken Sturm and Kathy Molina GBT1999 Indicates whether the site was used by Gull-billed Terns in 1999. Ken Sturm and Kathy Molina SE1999 Indicates whether the site was used by Snowy Egrets in 1999. Ken Sturm and Kathy Molina BCNH1999 Indicates whether the site was used by Black-crowned Night Herons in 1999. Ken Sturm and Kathy Molina LG1999 Indicates whether the site was used by Laughing Gulls in 1999. Ken Sturm and Kathy Molina CG1999 Indicates whether the site was used by California Gulls in 1999. Ken Sturm and Kathy Molina MASSEYLABE MASSEYNAME Indicates alternate names by which Barbara Massey wants features labeled. Barbara Massey Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. 20220114 Center for Spatial Studies, University of Redlands Lisa Benvenuti unknown US 909-748-8372 lisa_benvenuti@redlands.edu FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time None Unclassified None