Photosynthesis and respiration of exposed salt-marsh fucoids
Photosynthesis and respiration of exposed salt-marsh fucoids
复制标题
暴露盐沼岩藻类物质的光合作用和呼吸作用
DOI：
10.1007/bf00398128
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发表时间：
1976
期刊：
影响因子：
2.4
通讯作者：
R. F. Jones
中科院分区：
文献类型：
--
作者：
B. H. Brinkhuis;N. Tempel;R. F. Jones
利用红外co2气体分析仪，研究了盐沼岩藻（cophyllum nodosumecadscorpioides和fucus vesiculos）在不同光照强度、温度和干燥程度下的光合作用和呼吸作用。结果表明，当光强（0.1 ~ 0.2 g cal/cm2/min）约为互花米草（Spartina interniflora）下藻类夏季日最大光强的10% ~ 50%时，净光合作用（0.5 ~ 2.0 mg C/g干重/h）迅速饱和。干旱化对光合作用的影响最为显著，在水分流失率为0 ~ 25%时，光合作用略有增加，在水分流失率大于50%时，光合作用趋于平稳，光合作用急剧下降。暗呼吸（0.1 ~ 0.3 mg C/g干重/h）也被干燥抑制。这两种藻类似乎广泛地适应了所调查的所有三个参数。
Photosynthesis and respiration of the salt-marsh fucoidsAscophyllum nodosumecadscorpioidesandFucus vesiculosuswere investigated using an infrared CO2gas analyzer under a variety of light intensities, temperatures, and levels of desiccation while the algae were exposed to the atmosphere. Results indicated that net photosynthesis (0.5 to 2.0 mg C/g dry weight/h) saturated rapidly at light intensities (0.1 to 0.2 g cal/cm2/min) which were approximately 10 to 50% of the daily summer maximum intensities for algae found under phanerogam (Spartina alterniflora) canopies. Desiccation exhibited the most pronounced effect on photosynthesis, which increases slightly between 0 and 25% water loss, levels off, and decreases sharply at water losses greater than 50%. Dark respiration (0.1 to 0.3 mg C/g dry weight/h) is also inhibited by desiccation. Both species of algae appear to be broadly adapted to all three parameters investigated.