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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-bc
045 |ax7x8
0861 |aFs97-4/1595E-PDF|zFs97-4/1595
1001 |aLister, D. B., |eauthor.
24510|aChum salmon survival and production at seven improved groundwater-fed spawning areas / |cby D.B. Lister, D.E. Marshall and D.G. Hickey.
264 1|aVancouver, B.C. : |bEnhancement Services Branch, Department of Fisheries and Oceans, |cOctober 1980.
264 4|c©1980
300 |a1 online resource (x, 58 pages, 51 unnumbered 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 ; |v1595
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (pages 57-58).
5203 |a"Chum salmon spawning, egg-to-fry survival and fry production were assessed in a one-year study of improved groundwater-fed spawning areas in southern British Columbia. Survival from potential egg deposition to fry emigration ranged from 1% to 33.5% and averaged 16.3%, approximately twice the average recorded at natural spawning areas in the province. Although maximum fry production per unit of spawning area (517/m²) was achieved with the highest spawning density (2.5 females/m²), fry output per area did not increase appreciably when density exceeded 0.5 female/m². The advantages of a graded gravel spawning substrate, which had been added to 5 of the 7 sites, were not apparent from the survival data. However, differences between sites in other physical features and in spawner density may have obscured the influence of substrate quality. Additional information is presented on characteristics of chum salmon spawning populations and fry migrations, as well as incidental data on utilization of the improved spawning areas by other salmonid species"--Abstract, page x.
546 |aIncludes abstracts in English and French.
650 0|aChum salmon|xSpawning|zBritish Columbia.
650 0|aChum salmon|xEggs|xIncubation|zBritish Columbia.
650 0|aChum salmon|xProductivity|zBritish Columbia.
650 0|aChum salmon|xMigration|zBritish Columbia.
650 0|aFish habitat improvement|zBritish Columbia.
650 6|aSaumon keta|xFrai|zColombie-Britannique.
650 6|aSaumon keta|xŒufs|xIncubation|zColombie-Britannique.
650 6|aSaumon keta|xProductivité|zColombie-Britannique.
650 6|aSaumon keta|xMigration|zColombie-Britannique.
650 6|aPoissons|xHabitat|xAmélioration|zColombie-Britannique.
7101 |aCanada. |bDepartment of Fisheries and Oceans, |eissuing body.
7101 |aCanada. |bDepartment of Fisheries and Oceans. |bPacific Region. |bEnhancement Services Branch, |eissuing body.
830#0|aCanadian manuscript report of fisheries and aquatic sciences ;|v1595.|w(CaOODSP)9.505211
85640|qPDF|s1.81 MB|uhttps://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-4/Fs97-4-1595-eng.pdf