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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-bc|apn-----
045 |ax9x9
0861 |aFs97-4/2495E-PDF|zFs97-4/2495E
1001 |aCampagna, S., |eauthor.
24510|aDensity estimates of giant red sea cucumber (Parastichopus californicus) populations, by dive survey, in the Gulf Islands and Jervis Inlet areas, British Columbia, Canada, in November 1997 and January 1998 / |cby S. Campagna and C.M. Hand.
264 1|aNanaimo, British Columbia : |bFisheries and Oceans Canada, Science Branch, Pacific Region, Pacific Biological Station, |c1999.
264 4|c©1999
300 |a1 online resource (viii, 53 pages) : |billustrations, maps.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCanadian manuscript report of fisheries and aquatic sciences, |y0706-6473 ; |v2495
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (pages 18-20).
5203 |a"Dive surveys of sea cucumber (Parastichopus californicus) populations were conducted in the fall of 1997 in the Gulf Islands, and during the winter of 1998 in Jervis Inlet, BC, Canada. The Gulf Islands survey was a joint effort between the Department of Fisheries and Oceans (DFO), the Sea Cucumbers Harvesters Association of BC (PSCHA), and the Cowichan Band. The Jervis Inlet survey was completed without First Nations involvement by PSCHA and contracted third party participants. Each survey area constituted approximately 400 km of shoreline. Field methods consisted of counting the number of sea cucumbers in 4-metre wide strip transects, randomly placed within six randomly selected sites in each area. In addition, three smaller sites, measuring 200 m wide each, were intensively surveyed with random and systematic transects, followed by a complete harvest to obtain the true population size. Transect sampling in the Gulf Islands survey produced a mean density estimate of 3.10 +/- 1.15 SE sea cucumbers per meter of shoreline while densities of 9.53 +/- 1.28 were found in the Jervis Inlet survey. Most sea cucumbers were found between 12 and 18 m in the Gulf survey and between 4.5 and 9 m depth (chart datum) for Jervis Inlet. The greatest density in the Gulf Islands survey was found on boulder and cobble substrate, while mixed soft and hard substrate produced the greatest density in Jervis Inlet. For most of the intensive sites, estimates of the actual population size was within 90% of the confidence limits of the mean obtained from random transects. In the medium and low density sites of the Jervis Inlet, however, the population size was underestimated by transect sampling. Eight transects in one site in Jervis Inlet were surveyed twice. Half of these pairs had similar densities while the other half had densities that differed by a factor of as much as 14. The individual site means, however, were not significantly different"--Abstract, page vii.
546 |aIncludes abstracts in English and French.
650 0|aParastichopus californicus|zBritish Columbia|zGulf Islands.
650 0|aParastichopus californicus|zBritish Columbia|zJervis Inlet.
650 0|aSea cucumber populations|zBritish Columbia|zGulf Islands.
650 0|aSea cucumber populations|zBritish Columbia|zJervis Inlet.
650 0|aInvertebrate surveys|zBritish Columbia|zGulf Islands.
650 0|aInvertebrate surveys|zBritish Columbia|zJervis Inlet.
650 6|aHolothurie du Pacifique|zColombie-Britannique|zGulf, Îles.
650 6|aHolothurie du Pacifique|zColombie-Britannique|zJervis, Goulet.
650 6|aHolothuries|xPopulations|zColombie-Britannique|zGulf, Îles.
650 6|aHolothuries|xPopulations|zColombie-Britannique|zJervis, Goulet.
650 6|aInvertébrés|xInventaires|zColombie-Britannique|zGulf, Îles.
650 6|aInvertébrés|xInventaires|zColombie-Britannique|zJervis, Goulet.
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 ;|v2495.|w(CaOODSP)9.505211
85640|qPDF|s2.45 MB|uhttps://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-4/Fs97-4-2495-eng.pdf