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REEF Tropical Western Atlantic database, February 2020, Turks and Caicos

The dataset includes all species and abundance surveys from Turks and Caicos in the REEF Tropical Western Atlantic (TWA) database between 1994-2020. The database is comprising data about survey site, water and site physical condition, habitat and species recorded. It contains also metrics for every survey: presence/absence of the species, sighting frequency, density score and abundance score. The data is stored in form of csv files and shapefile.

For more information, see: https://www.reef.org/programs/volunteer-fish-survey-project

データとリソース

追加情報

フィールド 値
最終更新 4月 22, 2021, 21:21 (UTC)
作成日 10月 29, 2020, 19:53 (UTC)
Region TC
言語 eng
Topic Category Biota; flora and/or fauna in natural environment
Temporal Extent Start 1994-04-14
Temporal Extent End 2020-02-07
Dataset Reference Date 2020
Lineage Data were collected during REEF Volunteer Fish Survey Project allowing volunteer scuba divers and snorkelers to collect and report information on marine fish population as well as selected invertebrate and algae species in temperate and tropical reef areas. The data are collected by different volunters and separated into two categories based on experience level: novice and expert divers. After collection the data is quality checked and loaded into the REEF database. The metrics used in the database are calculated as: Percent sighting frequency (%SF) for each species is the percentage of all dives in which the species was recorded. Density score (D) for each species is a weighted average index based on the frequency of observations in different abundance categories. Density score is calculated as: D= ((nSx1)+(nFx2)+(nMx3)+(nAx4)) / (nS + nF + nM + nA), where nS, nF, nM, and nA represented the number of times each abundance category (Single, Few, Many, Abundant) was assigned for a given species. Values range from 1 to 4. Abundance Score is an estimate of abundance that accounts for non-sightings and is calculated as D x %SF, values range from 0 to 4
West Longitude -72.49
South Latitude 20.99
East Longitude -70.78
North Latitude 21.91
Spatial Reference System WGS84
Responsible Organisation Name Hidden (personal data protection)
Contact Mail Address Hidden (personal data protection)
Responsible Party Role Hidden (personal data protection)
Access Limitations Restricted, send data request to data owner
Use Constraints Restricted
Resource Reference Cite data as: REEF. 2020. Reef Environmental Education Foundation. World Wide Web electronic publication. www.REEF.org, date of download (7 February 2020).
Data Format shape, csv
Update Frequency continual
Accuracy varies depending on the source
Resource Type Dataserie
Metadata Date 2020-02-13
Metadata Point of Contact Hidden (personal data protection)
Contact Consent Contact details hidden