霞ケ浦高浜入におけるコウホネの沈水葉の光合成特性
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概要
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The aquatic plant, Nupahr japonicum DC., is known to have aerial, floating and submerged leaves. An investigation on this species in Takahamairi Bay of Lake Kasumigaura revealed the photosynthetic rate of submerged leaves to be much lower than that of aerial leaves. It was hypo-thesized that the low water temperature in winter and the low photosynthetic photon flux density (PPFD) at the water bottom in summer act to limit photosynthesis by submerged leaves. Moreover, since submerged leaves utilize only free-CO_2 the alkaline, low free-CO_2 conditions of Takahamairi Bay may further act to limit photosynthesis via low ambient carbon availability.
- 日本生態学会の論文
- 1989-12-31
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