Secondary production of the eusirid amphipod <Emphasis Type="Italic">Pontogeneia rostrata</Emphasis> Gurjanova, 1938 (Crustacea: Peracarida) on a sandy shore in Korea |
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| Authors: | Ok Hwan Yu Hae-Lip Suh |
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| Institution: | (1) Department of Biology, Pusan National University, Pusan, 609-735, South Korea;(2) Marine Living Resources Research Department, Korea Ocean Research and Development Institute, Ansan, P. O. Box 29, Seoul, 425-600, South Korea;(3) Department of Environmental and Earth Sciences, Chonnam National University, Gwangju, 500-757, South Korea |
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| Abstract: | The secondary production of the eusirid amphipod Pontogeneia rostrata Gurjanova, 1938, was examined on a sandy shore in Korea. Secondary production was estimated using a size-frequency method.
The biomass structure of P. rostrata included one peak in spring, with maximum biomass occurring in April. The annual secondary production of this species was
0.57 g DW m−2 yr−1 with an annual P/B ratio of 6.97. Secondary production of P. rostrata fell within the range observed for other amphipods on intertidal sandy shores, although the production/biomass (P/B) ratio
was higher than those recorded previously from the sampling site and from other tidal and estuary areas, as the number of
generations increases the P/B ratio. The results showing high abundance and P/B ratios suggest that P. rostrata plays an important role in the sandy shore ecosystem as a trophic link between primary producers and higher consumers. |
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