Grazing and production by zooplankton in lakes of contrasting trophic status : a progress report Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/tx31qk05n

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  • Grazing rates and density of the crustacean zooplankton were measured in Findley and Chester Morse Lakes and Lake Sammamish, Washington. Sample analysis is incomplete at reporting time, thus estimates of production from examination of life stage biomass changes was not possible. Maximum density of crustacean zooplankton was about 10/1 in the water column of oligotrophic Findley and Chester Morse Lakes and 70/1 in mesotrophic-eutrophic Lake Sammamish during 1972. Densities averaged about 10 times greater in Lake Sammamish than in the other lakes. Copepods comprised most of the numbers in all three lakes. Grazing apparently represents a sizable loss to phytoplankton in the three lakes feeding rates experimentally determined in situ from changes in ¹⁴C tagged phytoplankton ranged from nearly one half to over six times the algal biomass per day. However, feeding rate was always less than phytoplankton productivity.
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  • 99637 bytes
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  • Master files scanned at 600 ppi (256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9080C in TIF format. PDF derivative scanned at 300 ppi (256 B&W), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 3.1 was used for pdf compression and textual OCR.
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  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2008-01-29T22:22:39Z (GMT) No. of bitstreams: 1 Internal Report_81.pdf: 99637 bytes, checksum: 55ed4f3d296de4dc7f6b43709d1ca1b4 (MD5)
  • description.provenance : Made available in DSpace on 2008-01-29T22:22:40Z (GMT). No. of bitstreams: 1 Internal Report_81.pdf: 99637 bytes, checksum: 55ed4f3d296de4dc7f6b43709d1ca1b4 (MD5) Previous issue date: 1972
  • description.provenance : Submitted by Adam Powell (apscanner@gmail.com) on 2008-01-24T23:23:55Z No. of bitstreams: 1 Internal Report_81.pdf: 99637 bytes, checksum: 55ed4f3d296de4dc7f6b43709d1ca1b4 (MD5)

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