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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-bc|apn-----
045 |ax7x8
0861 |aFs97-4/1618E-PDF|zFs97-4/1618
1001 |aAdkins, B. E., |eauthor.
24512|aA survey of commercial sea urchin (Strongylocentrotus franciscanus) populations in the Gulf Islands, November 1980 / |cby B.E. Adkins, R.M. Harbo, and P.A. Breen.
264 1|aNanaimo, British Columbia : |bDepartment of Fisheries and Oceans, Resource Services Branch, Pacific Biological Station, |cAugust 1981.
264 4|c©1981
300 |a1 online resource (iii, 41 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 ; |vno. 1618
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (page 6).
5203 |a"Divers surveyed the abundance of red sea urchins, which are commercially harvested for their gonads, at 48 sites. Sea urchins were abundant enough to count in quadrats at 27 sites. The total standing stock of sea urchins available to the fishery in the southern Gulf Islands area was estimated by calculating mean sea urchin density in beds dense enough to support harvesting, and multiplying this by the total length of shoreline supporting commercial sea urchin beds. The standing stock was estimated to be 2600 t. Recruitment of juveniles (defined on the basis of size) was only 5.5% of the total population, indicating that turnover rate is very low. Quotas were therefore recommended for this area"--Abstract, page iii.
546 |aIncludes abstracts in English and French.
650 0|aRed sea urchin|zBritish Columbia|zGulf Islands.
650 0|aSea urchin populations|zBritish Columbia|zGulf Islands.
650 0|aInvertebrate surveys|zBritish Columbia|zGulf Islands.
650 6|aOursin rouge|zColombie-Britannique|zGulf, Îles.
650 6|aOursins|xPopulations|zColombie-Britannique|zGulf, Îles.
650 6|aInvertébrés|xInventaires|zColombie-Britannique|zGulf, Îles.
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 ;|vno. 1618.|w(CaOODSP)9.505211
85640|qPDF|s538 KB|uhttps://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1618-eng.pdf