Population dynamics and secondary production in an estuarine population of Nephtys hombergii (Polychaeta: Nephtyidae)
作者： J. A. Oyenekan
DOI: 10.1007/BF00508259
关键词: Biology 、 Sediment 、 Animal science 、 Nephtys hombergii 、 Silt 、 Oceanography 、 Biomass (ecology) 、 Dry weight 、 Estuary 、 Nephtyidae 、 Population
摘要: From July 1978 to March 1980, a study was made on the distribution, population dynamics and secondary production of Nephtys hombergii Audouin et Edw. occurring in sublittoral industrialised region Southampton Water south England. The distribution worm related silt content copper level sediment, greatest densities N. being found sediment containing 60 100% silt. Breeding occurred at low throughout year, with maximum September November January second year growth. Spawning when oocytes measured 200μm diameter, unshed gametes were resorbed. Annual varied between 0.092 4.32 g C m-2 yr-1 (ash-free dry weight) amounted 1.9–39.4% total macrofaunal sampling stations. production:biomass (P:B) ratio species 1.6 2.9.
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