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OAS accession Detail for 0277368
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| accessions_id: | 0277368 | archive |
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| Title: | Parrotfish species, density counts, and fish length from field-video surveys in Palau and Yap in 2017 and in the Federated States of Micronesia in 2018 (NCEI Accession 0277368) |
| Abstract: | This dataset contains biological and survey - biological data collected at shoreside Micronesia, shoreside Palau, and shoreside Yap during deployments vanWoesik_FSM_2018, vanWoesik_Palau_2017, and vanWoesik_Yap_2017 from 2017-06-02 to 2018-06-24. These data include genus and species. The instruments used to collect these data include Camera. These data were collected by Robert van Woesik of Florida Institute of Technology as part of the "Adjustment of western Pacific Ocean coral reefs to sea-level rise and ocean warming (Coral Reef Adjustment)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2023-01-23. The following is the text of the dataset description provided by BCO-DMO: parrotfish surveys Dataset Description: These data were published in van Woesik & Cacciapaglia (2018) and van Woesik & Cacciapaglia (2019). A question mark symbol (?) in the species column indicates that the fish could be identified as a parrotfish but the species could not be identified due to the camera angle. The species name followed by a question mark indicates the identification is uncertain due to the camera angle. A question mark symbol (?) in the size column indicates the fish could not be accurately measured due to the camera angle. A question mark symbol (?) in a comment column indicates the species name or size is questionable; the time on the video is recorded for the fish in question. If a comment column cointains a time notation (e.g. "01:00" or ":23"), it refers to the position in the video in minutes and seconds (mm:ss) or seconds (:ss) that the fish was identified. For more information about the parrotfish species please refer to the Parrotfish species information dataset https://www.bco-dmo.org/dataset/735679 . |
| Date received: | 20230123 |
| Start date: | 20170602 |
| End date: | 20180624 |
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| West boundary: | 134.22899 |
| East boundary: | 163.03798 |
| North boundary: | 9.65683 |
| South boundary: | 5.26278 |
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| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
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| Supplementary information: | Acquisition Description: Palau and Yap: We used a stratified random sampling approach to survey the reefs of Palau and Yap (Fig A, in S1 File, van Woesik and Cacciapaglia, 2018), by randomly selecting 24 study sites at each island using the package 'sp' in R. We stratified the sites in Palau by outer reefs (8), patch reefs in the lagoon (10), and inner reefs (6). In Yap, which does not have an extensive lagoon and only supports a few rare patch reefs, we stratified the sites by outer reefs (10) and inner reefs (14). The allocation of sites per strata was dependent on the reef area. We were particularly interested in determining the potential of shallow-water reef carbonate production and therefore focused our surveys between 2–5 m. At each site we laid six, 10 m long transect tapes, which followed the contours of the reef substrate. The tapes were placed approximately 2 m between the end of one tape and the start of the next tape. Using these transects we applied the line-intercept method to quantify the planar chord length of each benthic component to the nearest centimeter. At each site we also ran six, 10 m transect lines horizontally along the substrate, above the transects that followed the reef contours, which were used to approximate rugosity, by measuring the length difference between the horizontal and the contour-following lines. Fishes were videoed along six, 30 m long by 4 m wide transects. The herbivorous parrotfishes in the videos were subsequently analyzed for size (cm) and identity. A Cannon HD Vixia HFM500 video camera was used to record the fishes. The fish sizes were estimated, using background information of corals as scales, and all fishes in Palau were verified by Geory Mereb from PICRC (Palau International Coral Reef Center, Palau). For more details please see van Woesik and Cacciapaglia, 2018. Federated States of Micronesia (FSM): Twenty-four study sites were randomly selected in each of Pohnpei (6.2°N, 158.2°E) and Kosrae (5.3°N, 162.9°E) FSM using a randomly stratified sampling approach with the package sp in R. In Pohnpei, reefs were stratified as inner reefs, patch reefs, and outer reefs. In Kosrae, we only stratified the reefs as either inner reefs or outer reefs (because of the lack of patch reefs). Sample size of each strata was determined by calculating the geographic area of each reef type, using the area function from the R package raster, and allocating the number of sites in accordance with the area estimates. Reef surveys focused on the 2–5 meters depth contour to estimate shallow-water carbonate production. Six, 10 m transects, using a modified line-intercept technique that followed the reef substrate, were used to measure the benthic composition for every centimeter, at each site of the 48 sites. A few meters gap was allocated between the ends of the transects to ensure no overlap of substrate between transects. Herbivorous parrotfishes were videoed and identified to species and their estimated length was recorded to the nearest cm along six transects, each of which was 30 m long by 4 m wide. Care was taken to record the fish-transect videos ahead of the other transects to avoid any disturbance to the fishes. |
| Availability date: | |
| Metadata version: | 1 |
| Keydate: | 2023-04-02 04:53:39+00 |
| Editdate: | 2023-04-02 04:54:31+00 |