Animal observation records from point surveys

Time-based point observations of species abundance at sampling points within six towns (areas) in Singapore: Punggol (PG), Queenstown (QT), Tampines (TP), Jurong West (JW), Bishan (BS) and Woodlands (WL).

Usage

data(animal_observations)

Format

Dataframe

Source

Development of a Biodiversity Index for Residential Towns using Biodiversity Field Surveys, 2016–2022. Ministry of National Development Research Fund (MNDRF) Grant. Awarded to the National University of Singapore and the Singapore Housing & Development Board.

Details

The sampling points (point_id) were randomly generated within each town (area). Four types of animal surveys were conducted at sampling points, corresponding to four animal groups (column taxon): Birds (Aves), Butterflies (Lepidoptera), Odonates (Odonata) and Amphibians (Amphibia). In addition to the name of the species and abundance (number observed) at the particular time point, the names of the family and genus are also made available.

Each sampling period stretched across a year-long duration, where sampling points were surveyed once every two months (cycle adds up to 6 per period). Some points were sampled again in the second period (column resampled is TRUE). The start_time represents the start time of the 30-minute survey. All surveys took place between the years 2016 to 2022.

See also

• animal_surveys containing information about the surveys conducted.

• sampling_points where these animal surveys were conducted.

• sampling_areas where the sampling points were generated within.

Examples

head(animal_observations)
#> # A tibble: 6 × 13
#>   survey_id             point_id  area  period cycle resam…¹ start_time         
#>   <chr>                 <chr>     <chr>  <dbl> <dbl> <lgl>   <dttm>             
#> 1 1 QTNa14a_P 1 Odonata QTNa14a_P QT         1     1 NA      2016-08-04 14:00:00
#> 2 1 QTNa14a_P 1 Odonata QTNa14a_P QT         1     1 NA      2016-08-04 14:00:00
#> 3 1 QTNa14a_P 1 Odonata QTNa14a_P QT         1     1 NA      2016-08-04 14:00:00
#> 4 1 QTNa14a_P 1 Odonata QTNa14a_P QT         1     1 NA      2016-08-04 14:00:00
#> 5 1 QTNa14a_P 1 Odonata QTNa14a_P QT         1     1 NA      2016-08-04 14:00:00
#> 6 1 QTNb1a_P 1 Odonata  QTNb1a_P  QT         1     1 NA      2016-08-04 14:44:00
#> # … with 6 more variables: time <dttm>, taxon <chr>, species <chr>,
#> #   family <chr>, genus <chr>, abundance <dbl>, and abbreviated variable name
#> #   ¹​resampled