raw data

Receiver logbook template - harmonized shark data

Please find attached a receivers logbook template  with explanation and recommendations in the email below, developed by DCNA's Shark Intern Estela Grau and Guido Leurs.

Estela Grau, DCNA's shark intern, harmonized all the shark data recorded in the Dutch Caribbean and is working with Guido Leurs on a report. This report will give a better inside of the distribution patterns of the shark species in our waters. 

To have a better understanding of the Tiger sharks' migration patterns in the Caribbean basin, they obtained all the satellite tag information from the previous expeditions. Moreover, they aim to analyze the distribution patterns of the sharks tagged using acoustic telemetry. To do so, they got in contact with some of your organizations who had placed receivers in their marine parks.

While they were collecting the receivers' logbooks, they noticed some data collection differences between the parks. To facilitate future data analysis of acoustic telemetry, they therefore developed a receivers logbook template. On this template, you will be able to find all the important data they recommend you to collect while working with acoustic receivers. 

As you can see on the Excel file, it is of high importance to write down any time the receiver spends outside of the water once it has already been installed. For instance, if you are doing a check on the receivers. The time and date when you took it out of the water, and placed back, should be recorded. If we miss one of these times, it is very difficult to know if the receiver doesn't have any shark data because the shark wasn't in the area or because the receiver wasn't on the water. 

Moreover, the coordinates were also written down in different formats depending on the park. It would help for future analysis if all the coordinates will be written down in decimal degrees.

 

 

R script (https://www.dcbd.nl/document/receivers-logbook-template-harmonized-shark...)

Stela also attached the R script she used for the report. Please let her know if anyone wants to use it and needs her help, and she’ll go through it with you.

If there are any questions, please do not hesitate to contact Stela- stellagrau97@gmail.com

Date
2022
Data type
Raw data
Theme
Research and monitoring