Abstract:
:The ostracod Cyprideis torosa Jones, 1850 is a dominant species in the meiofauna of brackish water habitats. Its production in the field over a five-year period has been calculated using two production models. The first model uses the age-distribution of shells preserved in the sediment to assess the stage-specific mortality rates and the stage durations. The second model is the size-frequency model, modified for use with developmental stages instead of size-classes. Productions calculated with both methods agree very well. Their values are 9.7 and 9.2 g dwt·m-2·y-1 respectively. The yearly P/B-ratio is 2.7 or 2.6 y-1, production efficiency P/A is 0.38 or 0.37.The production efficiency of Cyprideis torosa nearly equals the mean efficiency of non-insect invertebrate detritivores. The species' conservative strategy and long generation time enables it to maintain a relatively high biomass with a fixed amount of food. These characteristics make it a superior competitor.
journal_name
Oecologiajournal_title
Oecologiaauthors
Herman PM,Heip C,Vranken Gdoi
10.1007/BF00385231subject
Has Abstractpub_date
1983-06-01 00:00:00pages
326-331issue
3eissn
0029-8549issn
1432-1939pii
10.1007/BF00385231journal_volume
58pub_type
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