This directory contains data from kittiwakes analysed in the article entitled ‘Temporal correlations among demographic parameters are ubiquitous but highly variable across species’, by Rémi Fay et al.

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The study focusing on kittiwakes (Rissa tridactyla) in France was licensed by and carried out in accordance with standard animal care protocols approved by the CRBPO (Museum National d’Histoire Naturelle, Paris; program PP 313).

This dataset results from a tremendous amount of work that required huge efforts across four decades, implying major personal commitment of a few key people and dedicated assistance of many others. The monitoring program was conceived by Jean-Yves Monnat. The data have been collected and curated by Jean-Yves Monnat and Emmanuelle Cam, with the invaluable help of hundreds of volunteer citizens, students, and scientists.

This research has been funded intermittently since year 1979, and has relied to volunteering for the bulk of data collection over 40 years; the program has not been funded from year 2017 to 2022, since the PI jointed the University of Western Brittany.

If you are interested in using this dataset, and potentially developing collaborations on this field system, then please get in touch (emmanuelle.cam@univ-brest.fr and paul.acker@ntnu.no).

Cam, E., Hines, J. E., Monnat, J.-Y., Nichols, J. D. & Danchin, E. 1998. Are adult nonbreeders prudent parents? The kittiwake model. Ecology 79: 2917-2930.
Acker, P., Besnard, A., Monnat, J. Y., & Cam, E. 2017. Breeding habitat selection across spatial scales: is grass always greener on the other side?. Ecology 98: 2684-2697.

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There are 7 files in CSV format, each containing 2D arrays with individuals in rows (from 1 to 17278) and years in colums (1 to 41, corresponding to 1979 to 2019).

AGE.csv - age data // takes value 1 when the individual was 0 year old (i.e. at birth), 2 when 1 year old, 3 when 2 years old, 4 when 3 years old, 5 when 4 years old, and 6 when >= 5 years old, or NA otherwise.

SURVIVAL.csv - survival data // takes value 1 if the individual was known to be alive (i.e. until its last observation), NA otherwise.

RECRUIT.csv - recruitment data // takes value 0 if the individual was known to be alive and prior to its first breeding event, 1 from when the individual has recruited into the population and until last observation, or NA otherwise.

BREED.csv - breeding data // takes value 0 if the individual was known to be alive and prior to its first breeding event and when and individual was observed but not breeding, 1 when the individual was observed breeding, or NA otherwise.

SUCCESS.csv - success data // takes value 0 if the individual was known to be alive and prior to its first breeding event and when the individual was observed but not breeding successfully, 1 when the individual was observed breeding successfully, or NA otherwise.

OFFSPRING.csv - offspring data // takes value 0 if the individual was known to be alive and prior to its first breeding event and when the individual was observed but not producing more than one offspring, 1 when the individual was observed producing more than one chick, or NA otherwise

DETECTED.csv - detection data // takes value 0 when the individual was not observed, or 1 when the individual was observed

Note that the above presentation of the kittiwake study is copied on top of each file, because we want any user to be fully aware of it. Accordingly, users will first have to delete these first rows before loading the data contained in these files.