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| 02249cam 2200349za 4500 |
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| 001 | 9.855901 |
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| 003 | CaOODSP |
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| 005 | 20221107155419 |
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| 007 | cr ||||||||||| |
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| 008 | 180427s1987 onca|||#o f00| 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 043 | |an-cn--- |
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| 086 | 1 |aCW69-1/59E-PDF |
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| 100 | 1 |aGaston, A. J. |
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| 245 | 10|aEstimating densities of birds at sea and the proportion in flight from counts made on transects of indefinite width |h[electronic resource] / |cA.J. Gaston, B.T. Collins, A.W. Diamond. |
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| 260 | |a[Ottawa] : |bCanadian Wildlife Service, |cc1987. |
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| 300 | |a16 p. : |bill. |
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| 490 | 1 |aOccasional paper ; |vno. 59 |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 500 | |aIssued also in French under title: Estimation de la densité des oiseaux en mer et de la proportion des oiseaux en vol à partir des dénombrements effectués sur des transects de largeur indéterminée. |
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| 504 | |aIncludes bibliographical references. |
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| 520 | 3 |a"Counts of seabirds at sea are sometimes made without defining an outer transect width or measuring the distance to each sighting. These counts can be converted into indices of abundance by expressing them as birds per unit time or per distance travelled. If the relative motion of flying birds is taken into account, then the comparability of such indices can be improved. In addition, the relative density of birds in flight and on the water can be estimated. We present methods for doing this, based on knowledge of flight speeds and range of detectability"--Abstract. |
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| 692 | 07|2gccst|aAquatic birds |
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| 692 | 07|2gccst|aPopulation |
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| 700 | 1 |aCollins, B. T., |d1949- |
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| 700 | 1 |aDiamond, A. W.,|d1944- |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aCanadian Wildlife Service. |
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| 775 | 08|tEstimation de la densité des oiseaux en mer et de la proportion des oiseaux en vol à partir des dénombrements effectués sur des transects de largeur indéterminée |w(CaOODSP)9.856594 |
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| 830 | #0|aOccasional paper (Canadian Wildlife Service)|vno. 59|w(CaOODSP)9.504780 |
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| 856 | 40|qPDF|s2.54 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/CW69-1-59-eng.pdf |
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