PIROP Northwest Atlantic 1965-1992
Falk Huettmann & John W. Chardine, Canadian Wildlife Service
Hyrenbach, D., F. Huettmann and J. Chardine. 2012. PIROP Northwest Atlantic 1965-1992. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/280) on yyyy-mm-dd.
Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach. 2009. OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributions. Oceanography. 22(2):104-115.
The PIROP (Programme Intégré de recherches sur les oiseaux pélagiques) data set, Atlantic subset, consists of geo-referenced vessel-based surveys to monitor pelagic seabirds. Most surveys were carried out by R.G. B. Brown from 'vessels of opportunity' supplied by the Bedford Institute for Oceanography (BIO) in Dartmouth/Halifax, but many other platforms and observers were used, too. During these surveys observations other than seabirds were also recorded, e.g. Waterfowl, Waterbirds, Songbirds, Raptors, Owls, Sea Mammals, and other sightings of interest (weather, oceanography, vessel activities, bird behaviour, etc.). The data collection period covers all seasons of 1966-1992, with most surveys being conducted between (late) summers of 1975-1987. The survey protocol originally consisted of unlimited width 10min transects, but was changed appr. 1984 towards a Tasker et al. (1984) type of survey (fixed-width strip transect). However, data and results from the PIROP database need to be interpreted as relative, and not absolute, abundance.
The PIROP data were collected for Canadian seabird monitoring purposes, focussing on the Canadian Atlantic, but also on other areas relevant to Canadian birds such as waters off Peru, off West Africa and off Europe.
[2015-03-24] Some records had a wrong animal count of zero. The value is replaced with a blank representing species presence only.
Data correction: Puffinus creatopus (Pink-footed Shearwater; ITIS: 174547) observed on 1982-08-16 12:00:00 at 53.9000:-55.5000 (id=151664) changed to Procellariidae (Shearwaters; ITIS: 174532) as P. creatopus does not occur in the Atlantic.
The PIROP data has effort data which is not as complete as to generate tracklines. It's available upon request and you are strongly encouraged to discuss with the data providers how to handle the effort data.
The PIROP data set is a large pool of seabird data, which got extended and modified over the years, e.g. due to changes of objectives and staff. Appr. in 1998 the data were merged by CWS-Dartmouth office with the Manomet Bird Observatory Seabird database, which cover mostly the Gulf of Maine region.
The following references refer to the PIROP database and present an overview about the structure, application and value of the data:
Brown, R.G.B., D.N. Nettleship, P. Germain, C.E. Tull and T. Davis. 1975. Atlas of eastern Canadian seabirds. Canadian Wildlife Service, Ottawa.
Diamond, A. W., A.J. Gaston and R.G.B. Brown. 1986. Converting PIROP counts of seabirds at sea to absolute densities. Progress Notes. No. 164. 21 pp.
Huettmann, F. 1998. An ecological GIS research application for the northern Atlantic - The PIROP database software, environmental data sets and the role of the internet/WWW. W.-F. Riekert and K. Tochtermann (Eds.) Hypermedia im Umweltschutz Proceedings of Deutsche Gesellschaft für Informatik (GI) and Forschungsinstitut für anwendungsorientierte Wissensverarbeitung (FAW) Ulm. Umwelt-Informatik aktuell; Bd.17, Metropolis Verlag. 213-217.
Attributes described below represent those in the original dataset provided by the provider.
Attributes in dataset provided
|Rays and sharks||0|
|Latitude||-25.15 - 79.78|
|Longitude||-149.57 - 18.57|
|Coord. prec.||4 decimal digits|
|Data type||Animal sighting|
|Sharing policy||CC-BY-NC (Minimum)|
|Also availalbe from||iOBIS|
|See metadata in static HTML|
|See metadata in FGDC XML|
|See download history / statistics|