48 datasets found
  1. e

    California Natural Diversity Database

    • knb.ecoinformatics.org
    • search.dataone.org
    Updated Sep 12, 2014
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    Landels-Hill Big Creek Reserve; University of California Natural Reserve System; Kurt Merg (2014). California Natural Diversity Database [Dataset]. http://doi.org/10.5063/AA/nrs.381.1
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    Dataset updated
    Sep 12, 2014
    Dataset provided by
    Knowledge Network for Biocomplexity
    Authors
    Landels-Hill Big Creek Reserve; University of California Natural Reserve System; Kurt Merg
    Time period covered
    Jan 1, 2005
    Area covered
    Description

    This database receives data from many sources including but not limited to US Fish and Wildlife Service and California Department of Fish and Game. It provides lists and information regarding rare and threatened animals, plants, and ecological communities. It uses scientific classification to identify plants and animals. It also ranks species according to how rare or endangered they are both regionally and worldwide. Lists and reports are available in website, in pdf format. Other CNDDB data is contain in CNDDB data link which is password protected.

  2. A

    CNDDB-tracked Elements by County [ds2852]

    • data.amerigeoss.org
    • data.cnra.ca.gov
    • +6more
    Updated Jul 5, 2022
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    United States (2022). CNDDB-tracked Elements by County [ds2852] [Dataset]. https://data.amerigeoss.org/dataset/cnddb-tracked-elements-by-county-ds2852-12386
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    kml, csv, geojson, zip, html, arcgis geoservices rest apiAvailable download formats
    Dataset updated
    Jul 5, 2022
    Dataset provided by
    United States
    Description

    This dataset provides basic California Natural Diversity Database (CNDDB) information at the California county level.

  3. d

    Nolina interrata CNDDB

    • datadiscoverystudio.org
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    Nolina interrata CNDDB [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/4f59d508ce984236ae4dc17ae3fa3f85/html
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    Area covered
    Description

    Link to the ScienceBase Item Summary page for the item described by this metadata record. Service Protocol: Link to the ScienceBase Item Summary page for the item described by this metadata record. Application Profile: Web Browser. Link Function: information

  4. Mountain Lion Habitat Model for NSNF Connectivity - CDFW [ds1045]

    • catalog.data.gov
    • data.cnra.ca.gov
    • +5more
    Updated Nov 27, 2024
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    California Department of Fish and Wildlife (2024). Mountain Lion Habitat Model for NSNF Connectivity - CDFW [ds1045] [Dataset]. https://catalog.data.gov/dataset/mountain-lion-habitat-model-for-nsnf-connectivity-cdfw-ds1045
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    Dataset updated
    Nov 27, 2024
    Dataset provided by
    California Department of Fish and Wildlifehttps://wildlife.ca.gov/
    Description

    The Maxent modeling algorithm was used to build the species distribution model at 270 m spatial resolution using species occurrence points and environmental layers as predictors (Phillips et al. 2006). Species occurrence points were primarily obtained from CNDDB (California Natural Diversity Database) and other CDFW sources, GBIF (Global Biodiversity Information Facility), PRBO (Point Blue Conservation Science) and Arctos museum databases. Vegetation, distance to water, elevation, and bioclimatic variables (Franklin et al. 2013) were used as predictor variables. The models were run at 270 m spatial resolution with five replications using cross-validation as a method of sample evaluation. Cross-validation involved the partitioning of the sample data into n subsets, fitting the models to n-1subsets, and testing the model on the one subset not used in fitting the model. Initial model runs showed that our models converged around 2,000 iterations and for this reason we ran all models with 2,500 maximum iterations. Maxent was implemented in R using the ‘dismo''package (Hijmans et al. 2011). Model evaluation was carried out using the ‘PresenceAbsence''package in R (Freeman and Moisen 2008). We used AUC as a metric to evaluate model performance. The package also computes threshold values using several accuracy metrics to translate predicted probability maps into binary suitable and unsuitable habitats. We selected the MeanProb, a threshold set based on the mean predicted probability of species occurrences. The output from Maxent are grid datasets in a multiband ‘tif''format with one band for each replication. We averaged the five replicated maps and created a mean grid for each species. The grid was then symbolized to represent low (threshold-50), medium (50-75) and high (75-100) habitat suitability, with pixel values that are below the threshold excluded. Models were reviewed by CDFW species experts; please review the use limitations.For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].

  5. e

    California Wildlife Habitat Relationship

    • knb.ecoinformatics.org
    • dataone.org
    • +1more
    Updated Jan 6, 2015
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    Landels-Hill Big Creek Reserve; University of California Natural Reserve System; Kurt Merg (2015). California Wildlife Habitat Relationship [Dataset]. http://doi.org/10.5063/AA/nrs.382.1
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    Dataset updated
    Jan 6, 2015
    Dataset provided by
    Knowledge Network for Biocomplexity
    Authors
    Landels-Hill Big Creek Reserve; University of California Natural Reserve System; Kurt Merg
    Time period covered
    Jan 1, 2005
    Area covered
    Description

    This database provides life history information and range maps for 675 species of amphibians, birds, mammals, and reptiles of California. A species list of those 675 species is provided. This site also contains fifty-nine wildlife habitat descriptions including the dominant plant taxa of those habitats, their life history information, maps and photographs of each habitat type. This site can be linked to via the California Natural Diversity Database website.

  6. d

    CNDDB tracked Elements by Quad ds2853

    • datasets.ai
    • data.cnra.ca.gov
    • +7more
    0, 15, 21, 25, 3, 57 +1
    Updated Sep 14, 2024
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    State of California (2024). CNDDB tracked Elements by Quad ds2853 [Dataset]. https://datasets.ai/datasets/cnddb-tracked-elements-by-quad-ds2853-10bc7
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    3, 15, 0, 8, 57, 25, 21Available download formats
    Dataset updated
    Sep 14, 2024
    Dataset authored and provided by
    State of California
    Description

    This dataset provides basic California Natural Diversity Database (CNDDB) information at the USGS 7.5 minute topographic quad level.

  7. Black Bear Habitat Model for NSNF Connectivity - CDFW [ds1008]

    • catalog.data.gov
    • data.cnra.ca.gov
    • +5more
    Updated Nov 27, 2024
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    California Department of Fish and Wildlife (2024). Black Bear Habitat Model for NSNF Connectivity - CDFW [ds1008] [Dataset]. https://catalog.data.gov/dataset/black-bear-habitat-model-for-nsnf-connectivity-cdfw-ds1008
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    Dataset updated
    Nov 27, 2024
    Dataset provided by
    California Department of Fish and Wildlifehttps://wildlife.ca.gov/
    Description

    The Maxent modeling algorithm was used to build the species distribution model at 270 m spatial resolution using species occurrence points and environmental layers as predictors (Phillips et al. 2006). Species occurrence points were primarily obtained from CNDDB (California Natural Diversity Database) and other CDFW sources, GBIF (Global Biodiversity Information Facility), PRBO (Point Blue Conservation Science) and Arctos museum databases. Vegetation, distance to water, elevation, and bioclimatic variables (Franklin et al. 2013) were used as predictor variables. The models were run at 270 m spatial resolution with five replications using cross-validation as a method of sample evaluation. Cross-validation involved the partitioning of the sample data into n subsets, fitting the models to n-1subsets, and testing the model on the one subset not used in fitting the model. Initial model runs showed that our models converged around 2,000 iterations and for this reason we ran all models with 2,500 maximum iterations. Maxent was implemented in R using the ‘dismo''package (Hijmans et al. 2011). Model evaluation was carried out using the ‘PresenceAbsence''package in R (Freeman & Moisen 2008). We used AUC as a metric to evaluate model performance. The package also computes threshold values using several accuracy metrics to translate predicted probability maps into binary suitable and unsuitable habitats. We selected the MeanProb, a threshold set based on the mean predicted probability of species occurrences. The output from Maxent are grid datasets in a multiband ‘tif''format with one band for each replication. We averaged the five replicated maps and created a mean grid for each species. The grid was then symbolized to represent low (threshold-50), medium (50-75) and high (75-100) habitat suitability, with pixel values that are below the threshold excluded. Models were reviewed by CDFW species experts; please review the use limitations.For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].

  8. A

    ‘CNDDB-tracked Elements by County [ds2852] Extended Table’ analyzed by...

    • analyst-2.ai
    Updated Feb 12, 2022
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    Analyst-2 (analyst-2.ai) / Inspirient GmbH (inspirient.com) (2022). ‘CNDDB-tracked Elements by County [ds2852] Extended Table’ analyzed by Analyst-2 [Dataset]. https://analyst-2.ai/analysis/data-gov-cnddb-tracked-elements-by-county-ds2852-extended-table-3896/b0d08749/?iid=002-196&v=presentation
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    Dataset updated
    Feb 12, 2022
    Dataset authored and provided by
    Analyst-2 (analyst-2.ai) / Inspirient GmbH (inspirient.com)
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Analysis of ‘CNDDB-tracked Elements by County [ds2852] Extended Table’ provided by Analyst-2 (analyst-2.ai), based on source dataset retrieved from https://catalog.data.gov/dataset/94aecd6e-c658-4b31-876f-2070ad9c318f on 12 February 2022.

    --- Dataset description provided by original source is as follows ---

    This dataset provides basic California Natural Diversity Database (CNDDB) information at the California county level.

    --- Original source retains full ownership of the source dataset ---

  9. d

    South Central California Coast Steelhead Range [ds1289].

    • datadiscoverystudio.org
    Updated Jun 23, 2017
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    (2017). South Central California Coast Steelhead Range [ds1289]. [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/cd3bea9d605544e5ae8bc7638be0620b/html
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    Dataset updated
    Jun 23, 2017
    Description

    description: Species presence data in this dataset provided by the following datasets and interpreted by PISCES: California Natural Diversity Database (CNDDB_2011), Moyle, Quinones and Bell (direct addition), National Marine Fisheries Service (NMFS_2012_SouthCentralCACoast_Steelhead.pdf), . This layer was generated by PISCES on 10/31/2014 01:38 AM; abstract: Species presence data in this dataset provided by the following datasets and interpreted by PISCES: California Natural Diversity Database (CNDDB_2011), Moyle, Quinones and Bell (direct addition), National Marine Fisheries Service (NMFS_2012_SouthCentralCACoast_Steelhead.pdf), . This layer was generated by PISCES on 10/31/2014 01:38 AM

  10. e

    Appendix 1. University of California Natural Reserve System (NRS) Sensitive...

    • knb.ecoinformatics.org
    • dataone.org
    Updated May 7, 2019
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    Erin Riordan (2019). Appendix 1. University of California Natural Reserve System (NRS) Sensitive Plant Species [Dataset]. http://doi.org/10.5063/F1K35RZ9
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    Dataset updated
    May 7, 2019
    Dataset provided by
    Knowledge Network for Biocomplexity
    Authors
    Erin Riordan
    Time period covered
    Apr 2, 2013 - Feb 6, 2019
    Area covered
    Description

    Appendix 1 from Riordan and Rundel (2019) report entitled "Evaluating the Future Role of the University of California Natural Reserve System for Sensitive Plant Protection under Climate Change" provides a list of sensitive vascular plant taxa recorded on University of California Natural Reserve System reserves. Status and taxonomy follow the California Native Plant Society (CNPS) Inventory of Rare and Endangered Plants (as of September 30, 2018). Data was compiled from reserve species lists, floras, and occurrence data downloaded in 2013-2014 from the Consortium of California Herbaria (CCH), California Natural Diversity Database (CNDDB), and CalPhotos. Please note that this list is incomplete and may contain errors stemming from mis-identifications, taxonomic uncertainties, or location uncertainties. Occurrences do not include observations made or digitized after 2013. Sensitive plant status for some taxa may change with periodic revisions to the CNPS rare plant inventory. For the most up-to-date information visit the rare plant inventory's website (http://www.rareplants.cnps.org/). We were unable to find information for sensitive plants on Jenny Pygmy Forest Reserve or the Steele/Burnand Anza-Borrego Desert Research Center. There are no sensitive plants records on Ano Nuevo Island Reserve (due to severe pinniped disturbance), however, several sensitive plants do have historical records on the mainland in Ano Nuevo State Park. Plants for the White Mountains Research Center are based on observations located within 2 miles of the Summit, Barcroft, and Crooked Creek stations. Sensitive plants are included for the associated parks Anza-Borrego Desert State Park and Yosemite National Park, both of which have formal legal agreements with the UCNRS, as well as for the Deep Canyon Transect (associated with Boyd Deep Canyon Desert Research Center) and the 40,000 acre Granite Mountains (associated with Sweeney Granite Mountains Desert Research Center).

  11. California Kangaroo Rat Habitat Model for NSNF Connectivity - CDFW [ds1036]

    • catalog.data.gov
    • data.ca.gov
    • +4more
    Updated Nov 27, 2024
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    California Department of Fish and Wildlife (2024). California Kangaroo Rat Habitat Model for NSNF Connectivity - CDFW [ds1036] [Dataset]. https://catalog.data.gov/dataset/california-kangaroo-rat-habitat-model-for-nsnf-connectivity-cdfw-ds1036
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    Dataset updated
    Nov 27, 2024
    Dataset provided by
    California Department of Fish and Wildlifehttps://wildlife.ca.gov/
    Description

    The Maxent modeling algorithm was used to build the species distribution model at 270 m spatial resolution using species occurrence points and environmental layers as predictors (Phillips et al. 2006). Species occurrence points were primarily obtained from CNDDB (California Natural Diversity Database) and other CDFW sources, GBIF (Global Biodiversity Information Facility), PRBO (Point Blue Conservation Science) and Arctos museum databases. Vegetation, distance to water, elevation, and bioclimatic variables (Franklin et al. 2013) were used as predictor variables. The models were run at 270 m spatial resolution with five replications using cross-validation as a method of sample evaluation. Cross-validation involved the partitioning of the sample data into n subsets, fitting the models to n-1subsets, and testing the model on the one subset not used in fitting the model. Initial model runs showed that our models converged around 2,000 iterations and for this reason we ran all models with 2,500 maximum iterations. Maxent was implemented in R using the ‘dismo''package (Hijmans et al. 2011). Model evaluation was carried out using the ‘PresenceAbsence''package in R (Freeman and Moisen 2008). We used AUC as a metric to evaluate model performance. The package also computes threshold values using several accuracy metrics to translate predicted probability maps into binary suitable and unsuitable habitats. We selected the MeanProb, a threshold set based on the mean predicted probability of species occurrences. The output from Maxent are grid datasets in a multiband ‘tif''format with one band for each replication. We averaged the five replicated maps and created a mean grid for each species. The grid was then symbolized to represent low (threshold-50), medium (50-75) and high (75-100) habitat suitability, with pixel values that are below the threshold excluded. Models were reviewed by CDFW species experts; please review the use limitations.For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].

  12. d

    Data from: Tulare Basin protection plan.

    • datadiscoverystudio.org
    Updated May 21, 2018
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    (2018). Tulare Basin protection plan. [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/12332c0eacc0491c945a3d0b0f9b0df6/html
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    Dataset updated
    May 21, 2018
    Description

    description: The Tulare Basin Protection Plan has been initiated by The Nature Conservancy to elucidate the problems and opportunities of natural diversity protection. Specifically, the objectives and methods of this study are: 1. To clearly define the former extent of biological diversity in the Tulare Basin. 2. To delineate the current preservation activities in the Basin. 3. To update and expand element abstract and "element"* occurrence information as part of the California Natural Diversity Data Base (CNDDB). 4. To recognize element protection opportunities. 5. To propose element protection measures.; abstract: The Tulare Basin Protection Plan has been initiated by The Nature Conservancy to elucidate the problems and opportunities of natural diversity protection. Specifically, the objectives and methods of this study are: 1. To clearly define the former extent of biological diversity in the Tulare Basin. 2. To delineate the current preservation activities in the Basin. 3. To update and expand element abstract and "element"* occurrence information as part of the California Natural Diversity Data Base (CNDDB). 4. To recognize element protection opportunities. 5. To propose element protection measures.

  13. w

    Amargosa River Pupfish Range - FSSC [ds1231]

    • data.wu.ac.at
    zip
    Updated Apr 29, 2016
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    State of California (2016). Amargosa River Pupfish Range - FSSC [ds1231] [Dataset]. https://data.wu.ac.at/schema/data_gov/N2VmYjNmNmQtNzYxZS00YjY2LWFiMGUtYTYwM2I3ODk0YWM5
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    zipAvailable download formats
    Dataset updated
    Apr 29, 2016
    Dataset provided by
    State of California
    Area covered
    d8137d733276fb2e482aa1f83d435af1a4934325
    Description

    Species presence data in this dataset provided by the following datasets and interpreted by PISCES: California Natural Diversity Database (CNDDB_2011), Moyle, Quinones and Bell (direct addition), . This layer was generated by PISCES on 10/30/2014 01:25 PM

  14. Coast Horned Lizard Habitat Model for NSNF Connectivity - CDFW [ds1035]

    • catalog.data.gov
    • data.cnra.ca.gov
    • +4more
    Updated Nov 27, 2024
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    California Department of Fish and Wildlife (2024). Coast Horned Lizard Habitat Model for NSNF Connectivity - CDFW [ds1035] [Dataset]. https://catalog.data.gov/dataset/coast-horned-lizard-habitat-model-for-nsnf-connectivity-cdfw-ds1035
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    Dataset updated
    Nov 27, 2024
    Dataset provided by
    California Department of Fish and Wildlifehttps://wildlife.ca.gov/
    Description

    The Maxent modeling algorithm was used to build the species distribution model at 270 m spatial resolution using species occurrence points and environmental layers as predictors (Phillips et al. 2006). Species occurrence points were primarily obtained from CNDDB (California Natural Diversity Database) and other CDFW sources, GBIF (Global Biodiversity Information Facility), PRBO (Point Blue Conservation Science) and Arctos museum databases. Vegetation, distance to water, elevation, and bioclimatic variables (Franklin et al. 2013) were used as predictor variables. The models were run at 270 m spatial resolution with five replications using cross-validation as a method of sample evaluation. Cross-validation involved the partitioning of the sample data into n subsets, fitting the models to n-1subsets, and testing the model on the one subset not used in fitting the model. Initial model runs showed that our models converged around 2,000 iterations and for this reason we ran all models with 2,500 maximum iterations. Maxent was implemented in R using the ‘dismo''package (Hijmans et al. 2011). Model evaluation was carried out using the ‘PresenceAbsence''package in R (Freeman and Moisen 2008). We used AUC as a metric to evaluate model performance. The package also computes threshold values using several accuracy metrics to translate predicted probability maps into binary suitable and unsuitable habitats. We selected the MeanProb, a threshold set based on the mean predicted probability of species occurrences. The output from Maxent are grid datasets in a multiband ‘tif''format with one band for each replication. We averaged the five replicated maps and created a mean grid for each species. The grid was then symbolized to represent low (threshold-50), medium (50-75) and high (75-100) habitat suitability, with pixel values that are below the threshold excluded. Models were reviewed by CDFW species experts; please review the use limitations.For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].

  15. California Thrasher Habitat Model for NSNF Connectivity - CDFW [ds1033]

    • catalog.data.gov
    • data.cnra.ca.gov
    • +5more
    Updated Nov 27, 2024
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    California Department of Fish and Wildlife (2024). California Thrasher Habitat Model for NSNF Connectivity - CDFW [ds1033] [Dataset]. https://catalog.data.gov/dataset/california-thrasher-habitat-model-for-nsnf-connectivity-cdfw-ds1033
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    Dataset updated
    Nov 27, 2024
    Dataset provided by
    California Department of Fish and Wildlifehttps://wildlife.ca.gov/
    Description

    The Maxent modeling algorithm was used to build the species distribution model at 270 m spatial resolution using species occurrence points and environmental layers as predictors (Phillips et al. 2006). Species occurrence points were primarily obtained from CNDDB (California Natural Diversity Database) and other CDFW sources, GBIF (Global Biodiversity Information Facility), PRBO (Point Blue Conservation Science) and Arctos museum databases. Vegetation, distance to water, elevation, and bioclimatic variables (Franklin et al. 2013) were used as predictor variables. The models were run at 270 m spatial resolution with five replications using cross-validation as a method of sample evaluation. Cross-validation involved the partitioning of the sample data into n subsets, fitting the models to n-1subsets, and testing the model on the one subset not used in fitting the model. Initial model runs showed that our models converged around 2,000 iterations and for this reason we ran all models with 2,500 maximum iterations. Maxent was implemented in R using the ‘dismo''package (Hijmans et al. 2011). Model evaluation was carried out using the ‘PresenceAbsence''package in R (Freeman and Moisen 2008). We used AUC as a metric to evaluate model performance. The package also computes threshold values using several accuracy metrics to translate predicted probability maps into binary suitable and unsuitable habitats. We selected the MeanProb, a threshold set based on the mean predicted probability of species occurrences. The output from Maxent are grid datasets in a multiband ‘tif''format with one band for each replication. We averaged the five replicated maps and created a mean grid for each species. The grid was then symbolized to represent low (threshold-50), medium (50-75) and high (75-100) habitat suitability, with pixel values that are below the threshold excluded. Models were reviewed by CDFW species experts; please review the use limitations.For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].

  16. Western Gray Squirrel Habitat Model for NSNF Connectivity - CDFW [ds1053]

    • catalog.data.gov
    • data.ca.gov
    • +5more
    Updated Nov 27, 2024
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    California Department of Fish and Wildlife (2024). Western Gray Squirrel Habitat Model for NSNF Connectivity - CDFW [ds1053] [Dataset]. https://catalog.data.gov/dataset/western-gray-squirrel-habitat-model-for-nsnf-connectivity-cdfw-ds1053
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    Dataset updated
    Nov 27, 2024
    Dataset provided by
    California Department of Fish and Wildlifehttps://wildlife.ca.gov/
    Description

    The Maxent modeling algorithm was used to build the species distribution model at 270 m spatial resolution using species occurrence points and environmental layers as predictors (Phillips et al. 2006). Species occurrence points were primarily obtained from CNDDB (California Natural Diversity Database) and other CDFW sources, GBIF (Global Biodiversity Information Facility), PRBO (Point Blue Conservation Science) and Arctos museum databases. Vegetation, distance to water, elevation, and bioclimatic variables (Franklin et al. 2013) were used as predictor variables. The models were run at 270 m spatial resolution with five replications using cross-validation as a method of sample evaluation. Cross-validation involved the partitioning of the sample data into n subsets, fitting the models to n-1subsets, and testing the model on the one subset not used in fitting the model. Initial model runs showed that our models converged around 2,000 iterations and for this reason we ran all models with 2,500 maximum iterations. Maxent was implemented in R using the ‘dismo''package (Hijmans et al. 2011). Model evaluation was carried out using the ‘PresenceAbsence''package in R (Freeman and Moisen 2008). We used AUC as a metric to evaluate model performance. The package also computes threshold values using several accuracy metrics to translate predicted probability maps into binary suitable and unsuitable habitats. We selected the MeanProb, a threshold set based on the mean predicted probability of species occurrences. The output from Maxent are grid datasets in a multiband ‘tif''format with one band for each replication. We averaged the five replicated maps and created a mean grid for each species. The grid was then symbolized to represent low (threshold-50), medium (50-75) and high (75-100) habitat suitability, with pixel values that are below the threshold excluded. Models were reviewed by CDFW species experts; please review the use limitations.For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].

  17. Dusky-footed Woodrat Habitat Model for NSNF Connectivity - CDFW [ds1038]

    • catalog.data.gov
    • data.cnra.ca.gov
    • +4more
    Updated Nov 27, 2024
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    California Department of Fish and Wildlife (2024). Dusky-footed Woodrat Habitat Model for NSNF Connectivity - CDFW [ds1038] [Dataset]. https://catalog.data.gov/dataset/dusky-footed-woodrat-habitat-model-for-nsnf-connectivity-cdfw-ds1038
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    Dataset updated
    Nov 27, 2024
    Dataset provided by
    California Department of Fish and Wildlifehttps://wildlife.ca.gov/
    Description

    The Maxent modeling algorithm was used to build the species distribution model at 270 m spatial resolution using species occurrence points and environmental layers as predictors (Phillips et al. 2006). Species occurrence points were primarily obtained from CNDDB (California Natural Diversity Database) and other CDFW sources, GBIF (Global Biodiversity Information Facility), PRBO (Point Blue Conservation Science) and Arctos museum databases. Vegetation, distance to water, elevation, and bioclimatic variables (Franklin et al. 2013) were used as predictor variables. The models were run at 270 m spatial resolution with five replications using cross-validation as a method of sample evaluation. Cross-validation involved the partitioning of the sample data into n subsets, fitting the models to n-1subsets, and testing the model on the one subset not used in fitting the model. Initial model runs showed that our models converged around 2,000 iterations and for this reason we ran all models with 2,500 maximum iterations. Maxent was implemented in R using the ‘dismo''package (Hijmans et al. 2011). Model evaluation was carried out using the ‘PresenceAbsence''package in R (Freeman and Moisen 2008). We used AUC as a metric to evaluate model performance. The package also computes threshold values using several accuracy metrics to translate predicted probability maps into binary suitable and unsuitable habitats. We selected the MeanProb, a threshold set based on the mean predicted probability of species occurrences. The output from Maxent are grid datasets in a multiband ‘tif''format with one band for each replication. We averaged the five replicated maps and created a mean grid for each species. The grid was then symbolized to represent low (threshold-50), medium (50-75) and high (75-100) habitat suitability, with pixel values that are below the threshold excluded. Models were reviewed by CDFW species experts; please review the use limitations.For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].

  18. w

    Tidewater Goby Range - FSSC [ds1241]

    • data.wu.ac.at
    zip
    Updated Jan 2, 2018
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    State of California (2018). Tidewater Goby Range - FSSC [ds1241] [Dataset]. https://data.wu.ac.at/schema/data_gov/YjZjZWIxMDItNDI5My00MWIyLWFlMzYtNmEwMDI3ZWMzMmRk
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    zipAvailable download formats
    Dataset updated
    Jan 2, 2018
    Dataset provided by
    State of California
    Area covered
    4bec49b065fd5192b07af5e94424d3b5fccc946b
    Description

    Species presence data in this dataset provided by the following datasets and interpreted by PISCES: California Natural Diversity Database (CNDDB_2011), Moyle, Quinones and Bell (direct addition), Moyle and Randall (twgpoly), . This layer was generated by PISCES on 10/30/2014 07:58 PM

  19. g

    Yellow-billed Magpie Habitat Model for NSNF Connectivity - CDFW [ds1056] |...

    • gimi9.com
    Updated Nov 25, 2014
    + more versions
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    (2014). Yellow-billed Magpie Habitat Model for NSNF Connectivity - CDFW [ds1056] | gimi9.com [Dataset]. https://gimi9.com/dataset/data-gov_yellow-billed-magpie-habitat-model-for-nsnf-connectivity-cdfw-ds1056
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    Dataset updated
    Nov 25, 2014
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    The Maxent modeling algorithm was used to build the species distribution model at 270 m spatial resolution using species occurrence points and environmental layers as predictors (Phillips et al. 2006). Species occurrence points were primarily obtained from CNDDB (California Natural Diversity Database) and other CDFW sources, GBIF (Global Biodiversity Information Facility), PRBO (Point Blue Conservation Science) and Arctos museum databases. Vegetation, distance to water, elevation, and bioclimatic variables (Franklin et al. 2013) were used as predictor variables. The models were run at 270 m spatial resolution with five replications using cross-validation as a method of sample evaluation. Cross-validation involved the partitioning of the sample data into n subsets, fitting the models to n-1subsets, and testing the model on the one subset not used in fitting the model. Initial model runs showed that our models converged around 2,000 iterations and for this reason we ran all models with 2,500 maximum iterations. Maxent was implemented in R using the ‘dismo''package (Hijmans et al. 2011). Model evaluation was carried out using the ‘PresenceAbsence''package in R (Freeman and Moisen 2008). We used AUC as a metric to evaluate model performance. The package also computes threshold values using several accuracy metrics to translate predicted probability maps into binary suitable and unsuitable habitats. We selected the MeanProb, a threshold set based on the mean predicted probability of species occurrences. The output from Maxent are grid datasets in a multiband ‘tif''format with one band for each replication. We averaged the five replicated maps and created a mean grid for each species. The grid was then symbolized to represent low (threshold-50), medium (50-75) and high (75-100) habitat suitability, with pixel values that are below the threshold excluded. Models were reviewed by CDFW species experts; please review the use limitations.For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].

  20. d

    CalFish

    • search.dataone.org
    • knb.ecoinformatics.org
    Updated Jan 6, 2015
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    Landels-Hill Big Creek Reserve; University of California Natural Reserve System; Kurt Merg (2015). CalFish [Dataset]. http://doi.org/10.5063/AA/nrs.376.1
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    Dataset updated
    Jan 6, 2015
    Dataset provided by
    Knowledge Network for Biocomplexity
    Authors
    Landels-Hill Big Creek Reserve; University of California Natural Reserve System; Kurt Merg
    Time period covered
    Jan 1, 2005
    Area covered
    Description

    This database contains information about mainly salmonid: distributions, population trends, genetics, hatchery stocks, aspects of their habitat, restoration projects and monitoring surveys. Provides links to original data, published data and is searchable by species, county, stream name, dam or hatchery. Provides maps of salmon and trout distributions. This database works in collaboration with several other agencies including but not limited to the, National Oceanic and Atmospheric Administration(NOAA), Coastal Conservancy, Pacific States Marine Fisheries Commission, and the Department of Water Resources. This site can be linked to via the California Natural Diversity Database website.

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Landels-Hill Big Creek Reserve; University of California Natural Reserve System; Kurt Merg (2014). California Natural Diversity Database [Dataset]. http://doi.org/10.5063/AA/nrs.381.1

California Natural Diversity Database

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Dataset updated
Sep 12, 2014
Dataset provided by
Knowledge Network for Biocomplexity
Authors
Landels-Hill Big Creek Reserve; University of California Natural Reserve System; Kurt Merg
Time period covered
Jan 1, 2005
Area covered
Description

This database receives data from many sources including but not limited to US Fish and Wildlife Service and California Department of Fish and Game. It provides lists and information regarding rare and threatened animals, plants, and ecological communities. It uses scientific classification to identify plants and animals. It also ranks species according to how rare or endangered they are both regionally and worldwide. Lists and reports are available in website, in pdf format. Other CNDDB data is contain in CNDDB data link which is password protected.

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