van Woesik Robert

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van Woesik
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  • Article
    On the dynamics of the Zanzibar Channel
    (John Wiley & Sons, 2015-09-12) Zavala-Garay, Javier ; Theiss, Jurgen ; Moulton, Melissa ; Walsh, Connor ; van Woesik, Robert ; Mayorga-Adame, Claudia G. ; García-Reyes, Marisol ; Mukaka, D. S. ; Whilden, Kerri ; Shaghude, Y. W.
    The Zanzibar Channel lies between the mainland of Tanzania and Zanzibar Island in the tropical western Indian Ocean, is about 100 km long, 40 km wide, and 40 m deep, and is essential to local socioeconomic activities. This paper presents a model of the seasonal and tidal dynamics of the Zanzibar Channel based on the Regional Ocean Modeling System (ROMS) and a comparison of the model and observations. The seasonal dynamics of the channel is forced by remote processes and the local wind. Remote forcing creates the East African Coastal Current, a portion of which flows through the channel northward with a seasonally varying magnitude. The local wind enhances this seasonality in the surface Ekman layer, resulting in a stronger northward flow during the southwest monsoon season and a weak northward or occasionally southward flow during the northeast monsoon season. The tidal flows converge and diverge in the center of the channel and reduce the transport in the channel. The remotely forced, wind-forced, and tidal dynamics contain 5%, 3%, and 92% of the total kinetic energy, respectively. Despite their low kinetic energy, the remotely forced and wind-forced flows are most relevant in advecting channel water to the open ocean, which occurs in 19 days at the peak of the southwest monsoon season. The channel is well mixed, except during brief periods in the two rainy seasons, and temporarily cools between December and February. The dispersion of passive tracers is presented as an example of potential model applications.
  • Dataset
    Parrotfish bite rates, volume of substrate removed, and estimates of erosional scars for each species observed in surveys at Palau, Yap, and the Federated States of Micronesia in 2017 and 2018
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2020-09-29) van Woesik, Robert
    As part of the reef-composition survey of Palau, Yap, and the Federated States of Micronesia (FSM), the erosion caused by parrotfish grazing at each site was estimated with in-situ data of size and density of parrotfish species. Data were also derived from the scientific literature on the species-specific bite rates and other processes that influence fish bioerosion rates. Field data were collected in Palau from June 2nd to 24th, 2017, in Yap from June 25th to July 6th, 2017, and in FSM in 2018. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/735679
  • Dataset
    Sea urchin size, density, and species from transects surveyed in Palau, Yap, the Federated States of Micronesia, Majuro, and Kiritimati from 2017 to 2019
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-07-23) van Woesik, Robert
    As part of the reef-composition survey of Palau, Yap, the Federated States of Micronesia, Majuro, and Kiritimati, the erosion to a reef caused by sea urchins was estimated using field surveys, which captured the density and size of sea urchins in transects. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/737514
  • Dataset
    Locations and depths of sites used in coral disease mapping from the Caribbean in 2012 (Contagious coral diseases project)
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2019-05-13) van Woesik, Robert
    Locations and depths of sites used in coral disease mapping from the Caribbean in 2012 (Contagious coral diseases project) For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/658213
  • Dataset
    Transect data of coral species and other substrate types collected in the field using line transects in Palau, Yap, the Federated States of Micronesia, Majuro, and Kiritimati from 2017 to 2019
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-07-23) van Woesik, Robert
    As part of the reef-composition survey of Palau (7°30' N, 134°30' E) and Yap (9°32' N, 138°7' E), 10-meter long, 2 to 5-meter depth transects were conducted. Coral species along the transect were recorded along with substrate types and other organisms present. Surveys in Palau were conducted from June 2nd to June 24th, 2017, and from June 25th to July 6th, 2017 in Yap. In Pohnpei (6.2°N, 158.2°E) and Kosrae (5.3°N, 162.9°E) FSM, six 10-meter transects were used to measure the benthic composition for every centimeter, at each site of 48 sites in 2018. Corals were recorded to species level, except massive Porites and encrusting Montipora, which were recorded in the field as growth forms. All other organisms along each transect were identified to the highest possible taxonomic resolution. In Majuro (7.0667° N, 171.2667° E) and Kiritimati (1.8721° N, 157.4278° W), a stratified random sampling approach was used to survey the reefs in2019. At both locations, the sites were stratified as either (i) outer reefs, or (ii) patch reefs in lagoons. The number of sites sampled per habitat varied according to the area of available habitat at each location. Surveys were focused between 2–5 m. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/737508
  • Dataset
    GPS coordinates of stratified random sampled sites where coral, parrotfish, and urchin surveys were conducted in Yap and Palau in 2017 and in the Federated States of Micronesia in 2018
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2020-09-29) van Woesik, Robert
    GPS coordinates of stratified random sampled sites where coral, parrotfish, and urchin surveys were conducted in Yap and Palau in 2017 and in the Federated States of Micronesia in 2018 For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/735714
  • Dataset
    GPS coordinates of stratified random sampled sites where coral, parrotfish, and urchin surveys were conducted in Palau, Yap, the Federated States of Micronesia, Majuro, and Kiritimati from 2017 to 2019
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-07-23) van Woesik, Robert
    GPS coordinates of stratified random sampled sites where coral, parrotfish, and urchin surveys were conducted in Palau, Yap, the Federated States of Micronesia, Majuro, and Kiritimati from 2017 to 2019. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/735714
  • Dataset
    Bleaching and environmental data for global coral reef sites from 1998-2017
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2019-12-09) van Woesik, Robert ; Burkepile, Deron
    The coral bleaching data were composed of the Reef Check dataset (reefcheck.org), collected by a mixture of professional scientists (56%) and trained and certified citizen-scientists (44%) using a standardized transect protocol. The dataset includes counts of the number of coral colonies showing bleaching (i.e., the percent of reef corals that were recorded as bleached), which was classified as site-wide bleaching. We also examined the prevalence of coral bleaching per coral ecoregion (as defined by Veron et al. 2015). We used the global Coral Reef Temperature Anomaly Database (CoRTAD Version 6) from the National Oceanic and Atmospheric Administration (www.nodc.noaa.gov/sog/cortad/) to predict coral bleaching prevalence and intensity across reefs worldwide. All CoRTAD variables were weekly data provided on a grid cell basis, of ~4km resolution, from 1982 to 2017(Sully 2019). For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/773466
  • Dataset
    Carbonate production and erosion rates across shallow-water coral reef habitats (2–5 m depth) on Pohnpei and Kosrae, Federated States of Micronesia
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2020-10-16) van Woesik, Robert
    Carbonate production and erosion rates across shallow-water coral reef habitats (2–5 m depth) on Pohnpei and Kosrae, Federated States of Micronesia. This dataset includes output of the model run. The results of two different iterations are provided as supplemental Excel files. The input data files and R scripts are included in the supplemental .zip file and from the BCO-DMO Github repository (https://github.com/BCODMO/Carbonate-production-Pohnpei-and-Kosrae/tree/1.0) For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/822215
  • Dataset
    Transect data of coral species and other substrate types collected in the field using line transects in Palau and Yap in 2017 and in the Federated States of Micronesia in 2018
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2020-10-12) van Woesik, Robert
    As part of the reef-composition survey of Palau (7°30' N, 134°30' E) and Yap (9°32' N, 138°7' E), 10-meter long, 2 to 5-meter depth transects were conducted. Coral species along the transect were recorded along with substrate types and other organisms present. Surveys in Palau were conducted from June 2nd to June 24th, 2017, and from June 25th to July 6th, 2017 in Yap. In Pohnpei (6.2°N, 158.2°E) and Kosrae (5.3°N, 162.9°E) FSM, six 10-meter transects were used to measure the benthic composition for every centimeter, at each site of 48 sites. Corals were recorded to species level, except massive Porites and encrusting Montipora, which were recorded in the field as growth forms. All other organisms along each transect were identified to the highest possible taxonomic resolution. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/737508
  • Dataset
    Health status and species of each coral sample taken in the Caribbean during 2013 (Contagious coral diseases project)
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2019-05-13) van Woesik, Robert
    Health status and species of each coral sample taken in the Caribbean during 2013 (Contagious coral diseases project) For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/658322
  • Dataset
    Data describing every diseased coral record from surveys in the Caribbean during 2012 (Contagious coral diseases project)
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2019-05-13) van Woesik, Robert
    Data describing every diseased coral record from surveys in the Caribbean during 2012 (Contagious coral diseases project) For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/658275
  • Dataset
    Sea urchin size, density, and species from transects surveyed in Palau and Yap in 2017 and in the Federated States of Micronesia in 2018
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2020-09-29) van Woesik, Robert
    As part of the reef-composition survey of Palau, Yap, and the Federated States of Micronesia, the erosion to a reef caused by sea urchins was estimated using field surveys, which captured the density and size of sea urchins in transects. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/737514
  • Dataset
    Microbial communities of corals analyzed using 454 Illumina pyrosequencing from Wonderland Reef, Florida in 2013
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2019-06-11) van Woesik, Robert
    Microbial communities of corals analyzed using 454 Illumina pyrosequencing from Wonderland Reef, Florida in 2013 For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/657866
  • Dataset
    Coral densities and extension rates from scientific literature collected in the field or in laboratories
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2020-10-12) van Woesik, Robert
    As part of reef-composition surveys of Palau, Yap, and the Federated States of Micronesia (FSM), the extension rates and density of coral species were collected from Prachett et al. (2015), meta-analysis of scientific literature, and personal observations to assist with quantifying the production of reef carbonate. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/736007
  • Dataset
    Sample numbers, barcode information, primer information and project name from bacteria samples collected in the Caribbean during 2013 (Contagious coral diseases project)
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2019-05-13) van Woesik, Robert
    Sample numbers, barcode information, primer information and project name from bacteria samples collected in the Caribbean during 2013 (Contagious coral diseases project) For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/658340
  • Dataset
    Model output (carbonate production and erosion rates) from field data collected in Majuro and Kiritimati in 2019
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-08-04) van Woesik, Robert
    Carbonate production and erosion rates from field data collected in Majuro and Kiritimati in 2019. This dataset includes output of the model run. The input data files and R scripts are included in the supplemental .zip file and from the BCO-DMO Github repository (https://github.com/BCODMO/Pacific/releases/tag/1.0) For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/856943
  • Dataset
    Bleaching and environmental data for global coral reef sites from 1980-2020
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2022-10-14) van Woesik, Robert ; Burkepile, Deron
    These data include information on the presence and absence of coral bleaching, allowing comparative analyses and the determination of geographical bleaching thresholds, together with site exposure, distance to land, mean turbidity, cyclone frequency, and a suite of sea-surface temperature metrics at the times of survey. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/773466
  • Dataset
    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
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2020-09-29) van Woesik, Robert
    As part of reef composition survey in Palau (7°30' N, 134°30' E) and Yap (9°32' N, 138°7' E), herbivorous parrotfish were identified to species and analyzed for size from video transects. Survey depth was between 2 to 5 meters due to an interest in determining the potential of shallow-water reef carbonate production. 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. Surveys in Palau were conducted in June 2 to June 24, 2017, and from June 25 to July 6, 2017 in Yap. In Pohnpei (6.2°N, 158.2°E) and Kosrae (5.3°N, 162.9°E) FSM, six 10-meter transects were used to measure the benthic composition for every centimeter, at each site of 48 sites. 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. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/734979
  • Dataset
    Parrotfish species, density counts, and fish length from field-video surveys in Palau, Yap, the Federated States of Micronesia, Majuro, and Kiritimati from 2017 to 2019
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-07-23) van Woesik, Robert
    As part of reef composition survey in Palau (7°30' N, 134°30' E) and Yap (9°32' N, 138°7' E), herbivorous parrotfish were identified to species and analyzed for size from video transects. Survey depth was between 2 to 5 meters due to an interest in determining the potential of shallow-water reef carbonate production. 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. Surveys in Palau were conducted from June 2 to June 24, 2017, and from June 25 to July 6, 2017 in Yap. In Pohnpei (6.2°N, 158.2°E) and Kosrae (5.3°N, 162.9°E) FSM, six 10-meter transects were used to measure the benthic composition for every centimeter, at each site of 48 sites in 2018. 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. In Majuro (7.0667° N, 171.2667° E) and Kiritimati (1.8721° N, 157.4278° W), a stratified random sampling approach was used to survey the reefs in 2019. At both locations, the sites were stratified as either (i) outer reefs, or (ii) patch reefs in lagoons. The number of sites sampled per habitat varied according to the area of available habitat at each location. Surveys were focused between 2–5 m. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/734979