00000nam 2200000za 4500 9.850114 CaOODSP 20241203113641 cr ||||||||||| 180116s1986 oncbd|||o f000 0 eng d CaOODSP eng n-cn--- CW69-9/164E-PDF Diamond, A. W., 1944- Converting PIROP counts of seabirds at sea to absolute densities [electronic resource] / A.W. Diamond, A.J. Gaston, and R.G.B. Brown. [Ottawa] : Canadian Wildlife Service, 1986. 21 p. : maps, charts. Progress notes ; no. 164 "September 1986." Digitized edition from print [produced by Environment and Climate Change Canada]. Issued also in French under title: Calcul des densités absolues des oiseaux pélagiques en mer à partir des dénombrements du PIROP. Includes bibliographical references. "Seabirds have been counted at sea off eastern and arctic Canada since 1969 under the Programme Intégré de Recherches sur les Oiseaux Pélagiques (PIROP) (Brown et al. 1975, Brown 1986). The PIROP data base was designed for records gathered by many different observers, often volunteers, some of whom had limited training"--Introd. gccst Aquatic birds gccst Population Gaston, A. J. Brown, R. G. B. Canada. Environment Canada. Canadian Wildlife Service. Calcul des densités absolues des oiseaux pélagiques en mer à partir des dénombrements du PIROP (CaOODSP)9.860782 Progress notes (Canadian Wildlife Service) no. 164 (CaOODSP)9.504439 PDF 1.20 MB https://publications.gc.ca/collections/collection_2018/eccc/CW69-9-164-eng.pdf