The Productivity of a Sargassum alternato-pinnatum Population on the coast of Misaki, Nagasaki Prefecture, Japan

長崎県見崎町沿岸におけるキレバモク群落の生産力

The Productivity of a Sargassum alternato-pinnatum Population on the coast of Misaki, Nagasaki Prefecture, Japan

Creators Murase Noboru

Creators Noda Mikio

Creators Abe Mahiko

Creators Yoshimura Taku

Creators Kiyomoto Setuo

Creators Tarutani Kenji

Creators Yoshida Goro

Creators Shimabukuro Hiromori

Creators Yatsuya Kousuke

The productive structures and productivity of a Sargassum alternato-pinnatum population at a depth of 5 to 6 m were studied from February to July 2011 on the coast of Misaki, Nagasaki City, Nagasaki Prefecture. Thalli grew increasingly through April to May. The maximum standing crop was 232.0 g d.wt. m^{-2} in May. Net production of the population in February to July was 248.4 g d.wt. m^{-2} by the summation method, which was calculated from the monthly changes in the productive structure. The maximum daily net production of 5.5 g d.wt. m^{-2} day^{-1} occurred from April to May. The release of oospores and embryos was observed in July.

[ISSN]0370-9361