Estimation of light requirement for the growth of Zostera marina in central Japan
Estimation of light requirement for the growth of Zostera marina in central Japan
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DOI：
10.1046/j.1444-2906.2003.00704.x
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发表时间：
2003-10-01
影响因子：
1.9
通讯作者：
Maegawa, M
中科院分区：
文献类型：
--
作者：
Abe, M;Hashimoto, N;Maegawa, M
本研究旨在估计大叶藻生长所需的临界光强，并决定其深度限制。将在日本中部三重县伊势湾松濑收集的Z marina种子发芽并生长为10 cm长的幼苗。年轻的Z在不同水温条件下培养1周，测定不同光子辐照下的光合作用和呼吸作用。日补偿点是根据光合活性和太阳辐射日变化的数学模型估算的。估算的Z幼港日补偿点为5.7%的海面。深度界限由关于海面上的相对太阳辐照度和消光系数的Beer-Lambert定律确定。几乎所有以前的研究都报告了Z的生长深度较浅。比目前的结果，但最低的报告数据符合目前估计的深度限制。因此，本研究所建立的数学模型可用于估算Z码头的产量和临界生长深度。结果表明，补偿深度主要受到达Z轴的太阳辐照度控制。码头床
The present study was designed to estimate the critical light intensity required for growth of Zostera marina and that which determines its depth limit. Seeds of Z marina collected at Matsunase, Ise Bay, Mie Prefecture, central Japan were germinated and grown to young plants of 10 cm in length. The young Z. marina were cultured for 1 week in various water temperatures, and their photosynthesis and respiration were measured under various photon irradiances. The daily compensation point was estimated by a mathematical model based on photosynthetic activity and diurnal changes in solar irradiance. The estimated daily compensation point of young Z marina was 5.7% of sea surface. The depth limit was determined by the Beer-Lambert law concerning the relative solar irradiance on the sea surface and the extinction coefficient. Almost all previous studies report a shallower growing depth of Z. marina than the present result, but the lowest reported data agreed well with the current estimated depth limit. Therefore, the mathematical model in the present study can estimate the production and critical growing depth of Z marina. The results suggest that the compensation depth is controlled mainly by the solar irradiance reaching the Z. marina beds.