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Estimation of light requirement for growth of Zostera japonica cultured seedlings based on photosynthetic properties
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Estimation of light requirement for growth of Zostera japonica cultured seedlings based on photosynthetic properties
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Journal Article
Estimation of light requirement for growth of Zostera japonica cultured seedlings based on photosynthetic properties
2010
Overview
Photosynthesis and respiration rates were measured on 10 cm tall seedlings of Z. japonica at various temperatures and photosynthetic photon flux densities (PPFDs), and the daily compensation points in each season were estimated with a mathematical model based on photosynthetic properties and diurnal changes in solar irradiances. The seedlings were grown from seeds collected at Tategami-ura, Ago Bay, Mie Prefecture, Japan, and cultured for 1 week under the examined temperatures of 10-25degC. The estimated daily compensation points of Z. japonica ranged from 9.3 to 13.6% of the surface irradiance. The total PPFDs in daytime ranged from 3.8 to 5.3 mol photons/square m/day. The theoretical depth limits were calculated by the Beer-Lambert law concerning the relative light intensities of the sea surface and the extinction coefficient. The estimated lowest limit of Z. japonica agreed well with the lowest depth (7 m) previously reported. Therefore, the mathematical model in this study can be used to estimate the production and critical growing depth of Z. japonica. Differences in light requirements seem to be one of the reasons for the shallower habitats of Z. japonica in comparison with Z. marina.
Publisher
Springer Japan,Springer Nature B.V
Subject
/ Biomedical and Life Sciences
/ DEPTH
/ Fish & Wildlife Biology & Management
/ GROWTH
/ http://www.fao.org/aos/agrovoc#c_15706
/ http://www.fao.org/aos/agrovoc#c_2190
/ http://www.fao.org/aos/agrovoc#c_25196
/ http://www.fao.org/aos/agrovoc#c_32735
/ http://www.fao.org/aos/agrovoc#c_3394
/ http://www.fao.org/aos/agrovoc#c_5812
/ http://www.fao.org/aos/agrovoc#c_6945
/ http://www.fao.org/aos/agrovoc#c_8536
/ http://www.fao.org/aos/agrovoc#c_9421
/ PLANTULE
/ ZOSTERA
