Contributors | Affiliation | Role |
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Pinsky, Malin | Rutgers University | Principal Investigator |
Stuart, Michelle | Rutgers University | Co-Principal Investigator, Contact |
Copley, Nancy | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Dive log from the west coast of Leyte, the Philippines in the municipalities of Albuera (10.91667, 124.69667) and Bay Bay City (11.07611, 124.87528), 2012-2018.
Anemone surveyor:
- searches adjacent area for anemone tag (anemone could have moved a few feet since last encounter)
- records time, species, size of anemone, tag number if present
- watches anemone and counts number of fish and estimate sizes (same procedure regardless of species)
- records species of fish, estimate sizes
- adds tag after the fact if one was missing or if there was only one zip tie tag (old system tag)
- flags anemone with flagging tape that it is ready to be hunted if APCL were present.
Fish catcher:
- waits for flagging tape to indicate anemone is ready for fish capture, ok to chase fish if they fled the area
- catches all fish of desired size range and places in holding vessel adjacent to anemone
- can move on to next anemone if anemone surveyor has flagged it
For dive-type codes, see: https://www.bco-dmo.org/dataset/785633
Data entry was made with Excel or Google sheets, depending on the internet connection.
Data cleaning was performed in R using the tidyverse package.
BCO-DMO Data Processing:
- refomatted 'time' column to ISO_DateTime format (yyyy-mm-ddTHH:MM:SS)
File |
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dive_log.csv (Comma Separated Values (.csv), 134.23 KB) MD5:8ddcbb222c566787b2b6c95d5bb31975 Primary data file for dataset ID 781671 |
Parameter | Description | Units |
dive_table_id | unique identifier of dive; links to anemones table as "dive_table_id" | unitless |
dive_num | dive number within field season | unitless |
dive_type | dive type options: | unitless |
date | date of the dive | unitless |
site | site where dive occurred | unitless |
municipality | municipality where dive occurred (Albuera or BayBay) | unitless |
gps | number of GPS unit | unitless |
divers | divers who participated in the dive regardless of role | unitless |
start_time | time began objective: searching for clownfish/anemones/transect; recorded in Asia/Manila timezone | unitless |
end_time | time ended objective as described in start_time; recorded in Asia/Manila timezone | unitless |
duration | end time minus start time | unitless |
discontinuous | 1 if objective was interrupted for some reason; like returning to the surface to change gear or stopping to watch a cuddlefish; 0 if there were no interruptions | unitless |
pause_start | the beginning time of the interruption; recorded in Asia/Manila timezone | unitless |
pause_end | the end of the interruption; recorded in Asia/Manila timezone | unitless |
weather | a one or few word description of the weather conditions | unitless |
current_knots | an estimation of the current speed | knots |
wave_height_cm | an estimation of the height in cm of the waves | centimeters |
visibility_m | an estimation of how far one can see underwater at reef depth | meters |
wind_mph | an estimation of wind speed | miles/hour (mph) |
tide | the phase of the tide: rising/falling/high/low | unitless |
topo_m | the distance from depth_top to depth_bottom | unitless |
depth_top_m | the shallowest part of the survey in meters | meters |
depth_bottom_m | the deepest part of the survey in meters | meters |
cover | a brief discription of survey seascape | unitless |
dive_notes | any notes pertaining to the dive | unitless |
dive_correction | if a Y is present then a correction has been made to the data since data entry from the data sheet | unitless |
dive_corr_date | the date of the most recent correction | unitless |
dive_corr_editor | the editor of the most recent correction | unitless |
dive_corr_message | which field was changed from what old value to what new value and why; based on what evidence. If another correction was already present; amend the message to include the date and correction editor of previous corrections | unitless |
Dataset-specific Instrument Name | Biomark 601 PIT tag reader |
Generic Instrument Name | tracking tag |
Dataset-specific Description | Passive Integrated Transponder (PIT) tags help scientists track individual organisms by providing a reliable lifetime 'barcode' for an individual animal. PIT tags are dormant until activated; they therefore do not require any internal source of power throughout their lifespan.To activate the tag, a low-frequency radio signal is emitted by a scanning device that generates a close-range electromagnetic field. The tag then sends a unique alpha-numeric code back to the reader (Keck 1994). Scanners are available as handheld, portable, battery-powered models and as stationary, automated models that are usually used for automated scanning. |
Generic Instrument Description | Devices attached to living organisms with the purpose of determining the location of those organisms as a function of time after tagging and release. |
Website | |
Platform | SCUBA Pinsky Leyte |
Start Date | 2012-05-05 |
End Date | 2018-04-10 |
Description | Field seasons (SCUBA) in Leyte, Philippines to study coral reef fish resilience.
West coast of Leyte, Philippines in the municipalities of Albuera (10.91667, 124.69667) and Bay Bay City (10.676940, 124.799170) |
Description from NSF award abstract:
When Typhoon Haiyan hit the Philippines it had sustained winds of 305 to 315 kph and was the strongest storm ever to make landfall. Storms are one of the most important disturbances to coral reef ecosystems. Previous research has primarily emphasized that habitat recovery is important for the recovery of reef fish communities after disturbance. We understand little, however, about the role of larval dispersal in mediating species responses to disturbance. Reef fish function as metapopulations connected by larval dispersal among reefs, and larval connectivity is therefore a critical process for their dynamics. A field site directly in Typhoon Haiyan's path provides an ideal opportunity to address the role of larval dispersal during recovery. Over the course of four field seasons (2008 to 2013), nearly two thousand clownfish were surveyed along 20km of coastline. Clownfish possess the same basic life history as most reef fish (sedentary adults and pelagic larvae), but are sufficiently rare and visible that genetic parentage methods can be used to follow larval dispersal. This study site is therefore a unique location in which to understand the metapopulation impacts of a massive storm. This project will focus on three hypotheses: 1) Habitat destruction determines the short-term impacts of storms disturbance, 2) Metapopulation processes shape recolonization after disturbance, and 3) Disturbance allows rare competitors to increase in abundance. The project will address these questions with a combination of fixed and random transects to assess reef habitat and reef fish abundance and diversity, as well as detailed, spatially explicit surveys of anemones and clownfish. Genetic mark-recapture and parentage methods with yellowtail clownfish will pinpoint the origin of new recruits that recolonize the reef post-typhoon.
Funding Source | Award |
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NSF Division of Ocean Sciences (NSF OCE) |