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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 241 to 250 of 447 (0.037 seconds)Spelling suggestions: "subject:"aparine ecology."" "subject:"acarine ecology.""
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Fredningseffekter och rekryteringsproblem hos abborre (Perca fluviatilis) i Stockholms skärgårdJohansson, Karl Magnus January 2011 (has links)
Effects of fishery closure on perch was detected as female perch was on average 5 cm longer in closed areas compared to non-closed areas. This could be a result of larger individuals surviving as an effect of reduced fishing. No effect was detected on the reproduction rate of YOY (young of the year) perch. A zooplankton survey revealed less amounts of the most important plankton groups for YOY perch in areas with failed reproduction, though the difference was statistically insignificant. The distribution of YOY perch and YOY/adult stickleback differed completely in this study with no area where the two species are both present. It is sketchy to draw any conclusions from this data but it remains a field for further investigation. The reproduction problem is concentrated to the outer parts of the archipelago which confirms previous studies of the geographic extension.
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| 242 |
Pathological changes in seals in Swedish waters : the relation to environmental pollution : tendencies during a 25-year period /Bergman, Anders January 2007 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniversitet, 2008. / Härtill 6 uppsatser.
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| 243 |
Sunburnt sea snails the role of ultravoilet radiation in the development of encapsulated embryos from temperate rocky shores /Przeslawski, Rachel. January 2005 (has links)
Thesis (Ph.D.)--University of Wollongong, 2005. / Typescript. Includes bibliographical references: p. [183]-210.
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| 244 |
The feasibility of stock enhancement as a management tool for dusky kob (Argyrosomus japonicus) in South Africa /Palmer, Ryan Michael. January 2008 (has links)
Thesis (M.Sc. (Ichthyology & Fisheries Science)) - Rhodes University, 2008.
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| 245 |
Investigations of the influence of physical factors on some marine ecological systems /Öberg, Jörgen. January 2005 (has links)
Thesis (Ph. D.)--Göteborg University, 2005. / Includes bibliographical references.
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| 246 |
The ecology of marine plankton in Tai Tam Bay, Hong Kong, with special reference to barnacle (arthropoda : cirripedia) larvae /Chan, Lai-chun. January 1995 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1995. / Includes bibliographical references (leaves 267-316).
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| 247 |
On the Copper complexation capacity in the marine environmentKramer, Cornelius Jacobus Maria. January 1900 (has links)
Thesis (Ph. D.)--Rijksuniversiteit te Groningen, 1985. / Includes bibliographical references (p. 117-129).
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| 248 |
The occurrence and distribution of lead and related alkaline earth metals in marine ecosystemsBurnett, Michael Welch. January 1979 (has links)
Thesis (Ph. D.)--California Institute of Technology, 1979. / Includes bibliographical references (leaves [146]-[162]).
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| 249 |
Energy basis of a coastal region: Franklin County and Apalachicola Bay, FloridaBoynton, W. R. January 1975 (has links)
Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Includes bibliographical references (leaves 376-388).
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| 250 |
Nutrient dynamics in and offshore of two permanently open South African estuaries with contrasting fresh water inflow /Jennings, Michael Evan. January 2005 (has links)
Thesis (M. Sc. (Zoology and Entomology))--Rhodes University, 2006.
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