This README_file.txt file was generated on 2022-06-10 by Fabrizio MANCO

GENERAL INFORMATION

1. Title of Dataset: Predicting foraging dive outcomes in chinstrap penguins using biologging and animal-borne cameras

2. Author Information
	A. Principal Investigator Contact Information
		Name: Fabrizio Manco
		Institution: Anglia Ruskin University
		Address: 
		Email: fabrizio.manco@aru.ac.uk

	B. Associate or Co-investigator Contact Information
		Name: Stephen Lang
		Institution: 
		Address: 
		Email: 

	C. Alternate Contact Information
		Name: Phil Trathan
		Institution: British Antarctic Survey
		Address: 
		Email: 

3. Date of data collection (single date, range, approximate date) : 2019-01-01 to 2019-02-15

4. Geographic location of data collection : Signy, South Orkney Island, 60°43' S, 45°35' W

5. Information about funding sources that supported the collection of the data: NERC/BAS (NEB1017, NEB1087)


SHARING/ACCESS INFORMATION

1. Licenses/restrictions placed on the data: Attribution License (ODC-By): Users are free to use the database and its content in new and different ways, provided they provide attribution to the source of the data and/or the database.

2. Links to publications that cite or use the data: Manco, F, Lang, S, Trathan, PN. 2021. Predicting foraging dive outcomes in chinstrap penguins using biologging and animal-borne cameras. Behavioral Ecology. BEHECO-2021-0474.R1

3. Links to other publicly accessible locations of the data: NA

4. Links/relationships to ancillary data sets: NA

5. Was data derived from another source? Yes
	A. If yes, list source(s): Water depth was obtained from : Dickens WA, Graham AGC, Smith JA, Dowdeswel JA, Larter RD, Hillenbrand C, Trathan PN, Arndt JE, Kuhn G. 2014. A new bathymetric compilation for the South Orkney Islands region, Antarctic Peninsula (49°-39°W to 64°-59°S): Insights into the glacial development of the continental shelf. Geochemistry, Geophys Geosystems. 15:2494–2514. doi: 10.1002/ 2014GC005323.

6. Recommended citation for this dataset: Manco, Fabrizio; Lang, Stephen; Trathan, Philip (2022), Predicting foraging dive outcomes in chinstrap penguins using biologging and animal-borne cameras, Dryad, Dataset, https://doi.org/10.5061/dryad.x69p8czmk


DATA & FILE OVERVIEW

1. File List: ChinstrapForagingDiveOutcomesVariables.csv

2. Relationship between files, if important: NA

3. Additional related data collected that was not included in the current data package: NA

4. Are there multiple versions of the dataset? No
	A. If yes, name of file(s) that was updated: 
		i. Why was the file updated? 
		ii. When was the file updated? 


METHODOLOGICAL INFORMATION

1. Description of methods used for collection/generation of data: 
During the breeding season 2018-19, 22 chinstrap penguins (Pygoscelis antarcticus) from Signey in the South Orkney Islands were equipped with a GPS tracker (Pathtrack nanoFix® GEO) set to record one location every minute, a time-depth recorder (TDR, Lotek LAT 1800 series) recording one pressure measure every 2 seconds and a video camera (Little Leonardo DVL400M) to record approximatively 5 hours of footage starting at a preset time.

2. Methods for processing the data: 
The data from the TDR was processed using the R diveMove package (Luque SP. 2007. Diving Behaviour Analysis in {R}. R News. 7(3):8–14. http://cran.r-project.org/doc/Rnews/) to detect each dive and calculate some dive metrics. The dives were linked to the GPS data in order to add the water depth at the location of the dive. The camera footage was viewed by two independent researchers who classified the outcome of each dive as: no krill encounter, single krill encounter or krill swarm encounter. The number of prey items caught during each dive was also estimated.
Two random forest models were used to predict the outcome and the number of prey cauht for each dive from an arrey of environmental variables. These were derived from the dive metrics, the surface tracking or the environment. The dataset presents the response and the predicting variables for 770 dives.

3. Instrument- or software-specific information needed to interpret the data: NA

4. Standards and calibration information, if appropriate: NA

5. Environmental/experimental conditions: NA

6. Describe any quality-assurance procedures performed on the data: NA

7. People involved with sample collection, processing, analysis and/or submission: The authors


DATA-SPECIFIC INFORMATION FOR: ChinstrapForagingDiveOutcomesVariables.csv

1. Number of variables: 20

2. Number of cases/rows: 770

3. Variable List: 

DeployID : Deployment identification number
DiveID : Dive identification number
foragingOutcome : outcome of the dive: no/krill/swarm
krillN : number of prey items caught
random : random number (uniform distribution, range: 1-100)
absangAvpm5 : absolute changes of angles between surface segments 5 minutes before and after each dive (radius)
spAvpm5 : average surface speed 5 minutes before and after each dive (metres per minute)
bottdist2 : sum of the vertical distances travelled during the bottom phase of each dive (metres)
maxdep : maximum depth of the dive (metres)
postdivedurlog : post-dive duration until the next dive (seconds, log transformed)
ascsp : vertical speed during the ascent phase of the dive (metres per second)
diveEfficiency : dive efficiency, ratio between the time spent at the bottom of the dive and the sum of the total dive time and post-dive duration, see Carbone 1995
diveShape : shape of the dive: U/V, see Wilson and Peters 1999
surfTemp : temperature at the surface recorded at the start of the dive by the time-depth recorder (Degree Celsius)
extDepthDown : extinction depth on the way down, depth when the camera footage becomes completely dark during the descent phase (metres)
bathymetry : water depth at the location of the dive (metres), derived from Dickens et al, 2014
distColony : distance between the location of the dive and the colony (kilometres)
nPosProx : number of recorded position within a 500m radius from a dive
nDivesProx : number of recorded dives within a 500m radius from a dive
CameraPeriod : period of the camera footage (am/pm)

4. Missing data codes: NA

5. Specialized formats or other abbreviations used: NA