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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-bc|apn-----
045 |ax8x9
0861 |aFs97-4/2541E-PDF|zFs97-4/2541E
1001 |aHand, C. M., |eauthor.
24512|aA survey of geoduck populations in the Griffith Harbour area, north Banks Island, in August 1995 / |cC.M. Hand and G. Dovey.
264 1|aNanaimo, British Columbia : |bFisheries and Oceans Canada, Science Branch, Pacific Region, Pacific Biological Station, |c2000.
264 4|c©2000
300 |a1 online resource (vi, 20 pages) : |billustrations, map.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCanadian manuscript report of fisheries and aquatic sciences, |y0706-6473 ; |v2541
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (pages 10-12).
5203 |a"A survey of the geoduck (Panopea abrupta) population in the Griffith Harbour area on northwest Banks Island, British Columbia, was conducted by the Underwater Harvesters Association and Fisheries and Oceans Canada in August, 1995. The purpose of the survey was to estimate the density of geoducks in the general area of reported beds and to verify the location of commercial beds. Survey densities are used to calculate quotas for the geoduck fishery. A total of 48 systematically-placed transects were completed over 150 hectares of subtidal seabed in the Griffith Harbour area. Transects were post-stratified into four sites, each of which constituted a more or less continuous geoduck bed. Mean geoduck density was estimated to be 1.7/m2 , 2.8/m², 4.2/m² and 0.2/m² for Sites 1 to 4, respectively. Site 4 was excluded from calculations for overall density because it was a rocky reef and not suitable habitat for geoducks. Site 3 contained some extremely high geoduck densities, in the order of 30/m². The mean density for Site 3 excluding these extreme data was 2.4/m². Sites 1, 2 and 3 were combined to estimate overall density for use in quota calculations. The mean overall density of geoducks in Griffith Harbour beds was 2.9/m² with a 95% confidence interval of 1.9/m² - 4. 1/m². With extreme data from Site 3 excluded, the estimate was 2.2/m² (95% CI 1.6-3.0/m²). These density estimates were 61% and 22% greater than the previous estimate of 1.8/m² used to calculate quotas prior to this survey. Use of the lower density estimate is recommended for this area, and especially if survey densities are to be extrapolated to other, unsurveyed geoduck beds"--Abstract, page v.
546 |aIncludes abstracts in English and French.
650 0|aPacific geoduck|zBritish Columbia|zBanks Island.
650 0|aClam populations|zBritish Columbia|zBanks Island.
650 0|aInvertebrate surveys|zBritish Columbia|zBanks Island.
650 6|aPanope du Pacifique|zColombie-Britannique|zBanks, Île de.
650 6|aMyes|xPopulations|zColombie-Britannique|zBanks, Île de.
650 6|aInvertébrés|xInventaires|zColombie-Britannique|zBanks, Île de.
7101 |aCanada. |bDepartment of Fisheries and Oceans, |eissuing body.
7102 |aPacific Biological Station (1972- ), |eissuing body.
830#0|aCanadian manuscript report of fisheries and aquatic sciences ;|v2541.|w(CaOODSP)9.505211
85640|qPDF|s1.43 MB|uhttps://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-4/Fs97-4-2541-eng.pdf