Layer: Terrestrial Habitat Connectivity normalized (ID: 74)

Parent Layer: Community Integrity

Name: Terrestrial Habitat Connectivity normalized

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Description: The Terrestrial Connectivity dataset is one of the four key components of the California Department of Fish and Wildlife’s (CDFW) Areas of Conservation Emphasis (ACE) suite of terrestrial conservation information. The dataset summarizes the relative ability of a species to move across the landscape between patches of suitable habitat. It shows a compilation of linkages, corridors, and natural landscape blocks identified in statewide and regional connectivity studies. Each hexagon (2.5 mi2) is ranked into one of the following categories based on the identification of corridors and linkages in statewide, regional, and species-movement studies:--------5: Irreplicable and Essential Corridors - The Nature Conservancy’s (TNC) Omniscape model identifies channelized areas and priority species movement corridors. The mapped channelized areas are those areas where surrounding land use and barriers are expected to funnel, or concentrate, animal movement. These areas may represent the last available connection(s) between two areas, making them high priority for conservation.--------4: Conservation Planning Linkages - Habitat connectivity linkages are often based on species-specific models and represent the best connections between core natural areas to maintain habitat connectivity. Linkages have more implementation flexibility than irreplaceable and essential corridors; any linkage areas not included in rank 5 are included here.--------3: Connections with Implementation Flexibility - Areas identified as having connectivity importance but not identified as channelized areas, species corridors or habitat linkage at this time. Future changes in surrounding land use or regional specific information may alter the connectivity rank. Included in this category are areas mapped in the TNC Omniscape study as ‘intensified’, core habitat areas, and areas on the periphery of mapped habitat linkages.--------2: Large Natural Habitat Areas - Large blocks of natural habitat (> 2000 acres) where connectivity is generally intact. This includes natural landscape blocks from the 2010 CEHC and updated with the 2016 Statewide Intactness dataset. Areas mapped as CEHC NLB and not include in the previous ranks, are included here.--------1: Limited Connectivity Opportunity - Areas where land use may limit options for providing connectivity (e.g., agriculture, urban) or no connectivity importance has been identified in models. Includes lakes. Some DOD lands are also in this category because they have been excluded from models due to lack of conservation opportunity, although they may provide important connectivity habitat.----------------This raster has been modified from the base 30m version in the following ways:-------- - It has been aggregated from a 30m to a 300m scale by averaging across the 30m values-------- - The normalized values follow the Connectivity Values based on the following relationships between degree of landscape connectedness, with higher values indicating increasingly important corridors/connectors.--------Habitat Connectivity Value Normalized Value--------1 NA--------44593--------3 -0.33--------4 0.33--------5 1----------------- Unit Of Measure: Categorical; 5 (listed above)

Copyright Text: California Department of Fish and Wildlife: Terrestrial Connectivity, Areas of Conservation Emphasis (ACE), version 3.1. Last updated 08/21/2019.The Terrestrial Connectivity dataset is one of the four key components of the California Department of Fish and Wildlife’s (CDFW) Areas of Conservation Emphasis (ACE) suite of terrestrial conservation information--------------------------------USDA Forest Service - Region 5 and Pacific Southwest Research Station (PSW): The USDA Forest Service makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the accuracy, reliability, completeness, or utility of these geospatial data, or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. Natural hazards may or may not be depicted on the data and maps, and land users should exercise due caution. The data are dynamic and may change over time. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly.

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