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Annual variations in vertical distribution and density of Bathyporeia pilosa Lindström and Bathyporeia sarsi Watkin at Julebaek. (North-Sealand, Denmark)
Nicolaisen, W.; Kanneworff, E. (1983). Annual variations in vertical distribution and density of Bathyporeia pilosa Lindström and Bathyporeia sarsi Watkin at Julebaek. (North-Sealand, Denmark). Ophelia 22(2): 237-251
In: Ophelia: International Journal of Marine Biology. Ophelia Publications: Helsingør. ISSN 0078-5326, more
Peer reviewed article  

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Keywords
    Population density; Vertical distribution; Bathyporeia pilosa Lindström, 1855 [WoRMS]; Bathyporeia sarsi Watkin, 1938 [WoRMS]; Marine

Authors  Top 
  • Nicolaisen, W.
  • Kanneworff, E.

Abstract
    The annual variations in vertical distribution and density of B. pilosa and B. sarsi were investigated on a locality in the near tideless inner Danish waters. The main trends in distribution could be explained by variations in water movement, temperature, desiccation and oxygen content of the interstitial water. Other factors, including permanent water cover and rather low and changing salinities seemed to be of minor importance. Predation was probably the major source of mortality. Mortality mainly took place in the reproductive period.

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