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  • 1
    Electronic Resource
    Electronic Resource
    Trophic state and water turn-over time in six choked coastal lagoons in Brazil (1991)
    Springer
    Biogeochemistry 14 (1991), S. 149-166 
    Details
    ISSN: 1573-515X
    Keywords: chlorophyll-a ; flushing half-life ; nutrients ; phosphorus loading ; trophic state ; water turn-over time
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract Comparison of total phosphorus and chlorophyll-a concentration, nutrient loading, and water turn-over time in six shallow choked lagoons along the coast of the state of Rio de Janeiro, Brazil, established that water turn-over time is related to the trophic state of the lagoons with additional anthropogenic nutrient loading affecting this relationship. Turnover time was calculated as a flushing half-life from rainfall, evaporation, runoff, and tidal exchange data, and trophic state was calculated from the quantity and quality of dissolved inorganic nutrients, total phosphorus, and chlorophyll-a standing stock. Flushing half-life of the lagoons ranged between 1 and 27 days, annual phosphorus areal loading from 3 to 18 mg m−2d−1, and chlorophyll-a standing stock from 6 to 160 mg M−2
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00002903
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    Paper (German National Licenses)
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  • 2
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    The Plankton Tower. IV. Interactions Between Water Column and Sediment in Enclosure Experiments in Kiel Bight (1982)
    Springer-Verlag
    In:  In: Marine Mesocosms: Biological and Chemical Research in Experimental Ecosystems. , ed. by Grice, G. D. and Reeve, M. R. Springer-Verlag, New York, Heidelberg, Berlin, pp. 205-216.
    Details
    Publication Date: 2016-07-20
    Description: Neritic ecosystems in the boreal zone generally maintain more plankton biomass over a longer period of the year than off-shore systems in the same latitude. Productivity is higher particularly during the summer stratification, between the spring and autumn phytoplankton blooms brought about by nutrients from sources other than pelagic remineralization. Plankton biomass levels maintained by recycling within a pelagic system tend to decrease with time if limiting nutrients bound in sedimenting particles are not replenished. In neritic environments, surface waters can receive nutrients from the land, but depending on water depth and local weather and geomorphology, replenishment can also come from nutrient-rich subthermocline water and sediments. In deeper bodies of water with a steep coastline, such as fjords, the sediment contribution will be less important (Takahashi et al. 1977) than in shallow water systems with more of their sediment surface within the euphotic zone (von Bodungen et al. 1975, Rowe et al. 1975).
    Type: Book chapter , NonPeerReviewed
    Format: text
    DOI: 10.1007/978-1-4612-5645-8_15
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    OceanRep: Book chapter
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