000 02974cam  2200421zi 4500
0019.877731
003CaOODSP
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006m     o  d f      
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008190809t20202020oncab   ob   f000 0 eng d
020 |a9780660321585
040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-bc
045 |ax7y1
0861 |aFs97-6/3330E-PDF
1001 |aHansen, Sandra, |eauthor.
24510|aIdentifying variables for standardization of the Northern Abalone (Haliotis kamtschatkana) Index Site Surveys time series (1978-2018) based on survey methodology and environmental variability / |cby Sandra C. Hansen, Shannon G. Obradovich, Christopher N. Rooper, Brenda J. Waddell, Linda M. Nichol, Shaun K. MacNeill, and Leslie L. Barton.
264 1|a[Ottawa] : |bFisheries and Oceans Canada = Pêches et océans Canada, |c2020.
264 4|c©2020
300 |a1 online resource (vii, 110 pages) : |billustrations (some colour), colour map.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCanadian technical report of fisheries and aquatic sciences, |x1488-5379 ; |v3330
504 |aIncludes bibliographical references (pages 28-34).
5203 |a"The Northern Abalone (Haliotis kamtschatkana) is a culturally and ecologically significant endangered marine snail. This report examines forty years of data from the Northern Abalone Index Site Surveys in British Columbia. Northern Abalone densities were generally insensitive to changes in the number of surveyed index sites and quadrats. There was high imprecision around the mean estimates in both the full and restricted datasets. Inclusion of environmental variables identified with generalized additive modelling in a standardized index yielded small improvements in precision of the annual indices. Trend detection using the existing survey data is limited by the large confidence intervals around the mean densities. Recommendations are to include the full dataset in further analyses, to use a subset of environmental variables to standardize the time series, and to increase the number of index sites surveyed in future Northern Abalone surveys"--Abstract, page vi.
546 |aIncludes abstracts in English and French.
650 0|aPinto abalone|zBritish Columbia.
650 0|aAbalone populations|zBritish Columbia.
650 0|aInvertebrate surveys|zBritish Columbia.
650 6|aOrmeau nordique|zBritish Columbia.
650 6|aOrmeaux (Mollusques)|xPopulations|zBritish Columbia.
650 6|aInvertébrés|xInventaires|zBritish Columbia.
7101 |aCanada. |bDepartment of Fisheries and Oceans, |eissuing body.
830#0|aCanadian technical report of fisheries and aquatic sciences ;|v3330.|w(CaOODSP)9.504449
85640|qPDF|s2.89 MB|uhttps://publications.gc.ca/collections/collection_2020/mpo-dfo/Fs97-6-3330-eng.pdf