Marine Mesocosms: Biological and Chemical Research in Experimental EcosystemsG.D. Grice, M.R. Reeve Springer New York, 1982 - 430 pagine Techniques developed for enclosing viable natural planktonic ecosystems pro vided the opportunity for prolonged and detailed investigation of dynamic events within the pelagic system of a known water body. Recent investigations into plankton ecology, using enclosure systems in dif ferent marine environments, are discussed in relation to the data obtained from the Nanaimo, British Columbia, Canada, plastic-sphere experiments of 1960 and 1962. Three types of modern enclosure experiments are recognized: floating systems within nutrient levels maintained or running down, and benthic attached systems. The review largely discusses results from the two kinds of floating systems. Processes at several trophic levels have been investigated in enclosures. This review attempts to draw together details from all experimental systems to emphasize the enclosures' contribution to our understanding of planktonic systems. Enclosures made it possible to examine primary production processes, particularly in relation to inorganic nutrient availability and water-column sta bility. Recent experiments have used the understanding of these processes as a management technique in maintaining different planktonic systems. Relation ships between primary and secondary trophic levels are not always easy to inter pret, since the growth of primary carnivore populations can often determine the survival of zooplankton populations. Nevertheless, the development of co horts of herbivorous zooplankton has been followed in several enclosures, yield ing useful information on development times and production rates. In enclosed systems it is thus possible to directly relate tertiary level production to inorganic nutrient input, and to calculate production rates and exchange efficiencies at several trophic levels. |
Sommario
Introduction and Description of Experimental Ecosystems | 1 |
Davis B S Chapter 10 Woods Hole Oceanographic Institution | 13 |
Application of Enclosures to the Study of Marine Pelagic | 25 |
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Altre edizioni - Visualizza tutto
Marine Mesocosms: Biological and Chemical Research in Experimental Ecosystems G.D. Grice,M.R. Reeve Anteprima limitata - 2012 |
Marine Mesocosms: Biological and Chemical Research in Experimental Ecosystems George Daniel Grice,Michael R. Reeve Visualizzazione estratti - 1982 |
Marine Mesocosms: Biological and Chemical Research in Experimental Ecosystems G.D. Grice,M.R. Reeve Anteprima non disponibile - 2011 |
Parole e frasi comuni
ammonium anthracene aromatic bags benthic benthos benz Biol biological biomass bloom Calanus calculated carbon cells CEPEX experiment chemical chlorophyll coastal compounds concentrations Controlled ecosystem pollution copepods Corycaeus ctenophores cycles Davies density depth diatoms dinoflagellates ecological ecosystem pollution experiment effects enclosure experiments environment environmental experimental ecosystems fecal pellets Figure fish flagellates flux Gamble Gearing Grice growth herbivores heterotrophic hydrocarbons increased Koeller laboratory larvae Limnol Loch Ewe marine ecosystems measured ment Menzel MERL mesocosms MERL tanks microbial microcosms mixing Narragansett Bay natural nitrogen nutrient observed Oceanogr Øiestad organic Parsons particles pelagic phytoplankton Pilson plankton plankton tower plastic Pleurobrachia populations predation primary production radioactivity Reeve removal replication respiration Saanich Inlet samples Santschi seawater sediment traps sinking rates soluble species spill studies surface Takahashi temperature trace metal trophic levels Tsesis uptake volatile water column zooplankton