錦江河口 潮間帶 低棲生物群集의 에너지 流轉

Energy Flow of Benthic Community at the Intertidal Zone of Kum River Estuary

Biomass, carbon, nitrogen and phosphorus standing crops of bethic community were estimated at the trophic levels in the intertidal zone of Kum river estuary. Annual mean biomass of zoobenthos was 130.5g/<TEX>$m^2$</TEX>, body fraction 26.7g/<TEX>$m^2$</TEX> and shell fraction 103.8 g/<TEX>$m^3$</TEX>. Biomass estimated as ash-free dry weight was total 28.9g/<TEX>$m^2$</TEX>, body fraction 20.2g/<TEX>$m^2$</TEX> and shell fraction 8.7g/<TEX>$m^2$</TEX> Carbon standing crops of zoobenthos were 15.9gC/<TEX>$m^2$</TEX>, in which organic carbon content was 7.0gC/<TEX>$m^2$</TEX> and carbonate carbon was 8.9gC/<TEX>$m^2$</TEX>. Production efficiency by carbon standing crops from sediment to herbivores and carnivores and 10.6% and 16.0% in phosphorus, respectively. Annual primary production of benthic algae was crudely estimated to 329g.dw/<TEX>$m^2$</TEX>/yr by using the biomass and turn-over rate of benthic algae.