チェンバー法による亜熱帯海域の底生生物群落の基礎生産量の評価

概要

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A flexible closed chamber was applied to evaluate net primary production for three different benthic communities, which are coral, seagarass and micro-algae under the same experimental conditions at the Bisesaki, Okinawa, Japan in August, 2005. Study on the comparison among different communities at the same area, same tool and same condition is very few up to the present. A chamber was about 30 l for volume and 0.145 m2 for bottom surface area. Net primary production and respiration were measured using dissolved oxygen sensor with temperature and salinity. Net primary productions were 37.0 μmol-1 h-1 for coral community, 38.3 μmol-1 h-1 for seagrass community and 14.6 μmol-1 h-1 for benthic micro-community. These results indicate that net primary production of coral and seagrass communities is the almost same. It was confirmed that a use of same chamber is effective for comparison of the behavior of different living communities.
2007-07-31