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OAS accession Detail for 0277820
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| accessions_id: | 0277820 | archive |
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| Title: | Sea urchin size, density, and species from transects surveyed in Palau and Yap in 2017 and in the Federated States of Micronesia in 2018 (NCEI Accession 0277820) |
| 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 species. 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 2020-09-29. The following is the text of the dataset description provided by BCO-DMO: sea urchin data Dataset Description: These data were published in van Woesik & Cacciapaglia (2018) and van Woesik & Cacciapaglia (2019). |
| Date received: | 20200929 |
| 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: Sea urchins were measured for test diameter and classified as either Diadema , Echinometra , and 'other' in transects. Survey depth was maintained between 2 to 5 meters, to examine the potential of shallow-water reef-carbonate production. Urchins were identified in 10 m long by 60 cm wide transects, 30 cm either side of the 10 m tape. Each urchin’s test diameter was measured in the field. Surveys in Palau were conducted in June 2 to June 24, 2017, and from June 25 to July 6, 2017 in Yap. 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. The urchins were recorded as Echinometra , Diadema , and 'Other', and the diameter of each echinoid test was measured to the nearest 0.5 cm. |
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| Metadata version: | 1 |
| Keydate: | 2023-04-30 04:16:57+00 |
| Editdate: | 2023-04-30 04:17:38+00 |