Science and Collaboration for Connected Wildlands 20130401 vector digital data http://bios.dfg.ca.gov/ ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/800_899/ds857.zip Critical Linkages: Bay Area and Beyond (Critical Linkages) was designed to preserve functional landscape linkages to maintain ecological and evolutionary processes among large wildlands and ensure the integrity of our existing and future conservation investments. The 14 priority linkages were designed based on 66 focal species, including 15 plants, 2 insects, 4 fish, 6 amphibians, 5 reptiles, 13 birds and 21 mammals. These focal species cover a broad range of habitat and movement requirements such that planning adequate linkages for their needs is expected to cover connectivity needs for the ecosystems they represent. The Critical Linkages Network is comprised of Linkage Designs, Large Landscape Blocks, Key Riparian Corridors, Riparian Buffer Zones and Important Baylands that together are expected to to accommodate potential live-in and move-through habitat for the focal species. The patch size analysis classified potential breeding habitat into two size classes. A potential core was defined as a continuous area of suitable habitat large enough to sustain at least 50 individuals. Potential cores are probably capable of supporting the species for several generations (although with erosion of genetic material if isolated). A breeding patch was defined as an area of suitable habitat large enough to support successful reproduction by a pair (perhaps more if home ranges overlap greatly), but smaller than a potential core area. Patches are useful to the species if the patches are linked via dispersal to other patches and core areas. The patch configuration analysis assessed if the potential cores and patches of breeding habitat are within the species’ dispersal distance.For more information about the creation of the data including species specific model parameters please see Chapter 5 and Appendix D in the report at http://www.scwildlands.org/reports/Default.asp The primary objective of Critical Linkages: Bay Area & Beyond was to identify lands essential to maintain or restore functional connectivity among targeted wildlands for all species or ecological processes of interest in the study area. Complete None planned -123.844961 -119.659033 39.819417 35.638907 None patch size Critical Linkages: Bay Area & Beyond least-cost corridor California patch configuration habitat suitability linkage design None See access and use constraints information. Science & Collaboration for Connected Wildlands Kristeen Penrod Conservation Director (209)285-1916 kristeen@scwildlands Produced by Science and Collaboration for Connected Wildlands, Fair Oaks, CA, www.scwildlands.org Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959 Vector GT-polygon composed of chains 68934 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.000000003754707655900803 0.000000003754707655900803 meter D North American 1983 GRS 1980 6378137.0 298.257222101 VAT_ds857 Bobcat Connectivity Modeling for the California Bay Area Linkage Network [ds857] OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Value The habitat suitability score, which is calculated as a function of pixel attributes such as land cover, road density, topographic position, and elevation. Count Habitat The potential breeding area, defined as a cluster of pixels that are good enough and big enough (i.e., larger than minimum sizes specified by the species expert) to support breeding by the focal species. patch An area of suitable habitat large enough to support successful reproduction by a pair or individuals (perhaps more if home ranges overlap greatly), but smaller than a potential core area. Patches are useful to the species if the patches are linked via dispersal to other patches and core areas. < patch (less than patch) Areas of suitable habitat that are smaller than a breeding patch. core A contiguous area of suitable habitat large enough to sustain at least 50 individuals. Potential cores are probably capable of supporting the species for several generations (although with erosion of genetic material if isolated). See access and use constraints information. File Geodatabase Feature Class 20160329 Science & Collaboration for Connected Wildlands Kristeen Penrod Conservation Director (209)285-1916 kristeen@scwildlands FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time