Primary Production of the Sand Microflora in Seagrass Beds of Mississippi Sound

Primary Production of the Sand Microflora in Seagrass Beds of Mississippi Sound
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密西西比海峡海草床沙微生物区系的初级生产

DOI:
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发表时间:
1992
期刊:
影响因子:
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通讯作者:
C. Moncreiff
C. Moncreiff
中科院分区:
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文献类型:
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作者:
A. E. Daehnick;M. Sullivan;C. Moncreiff

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在密西西比湾海草Halocellulwrightii Ascherson床下的桑迪沉积物支持多样性和生产性的底栖微藻组合。在一个年周期(1989年6月至1990年6月),几乎所有的藻类细胞组成的沙微生物区系的小型araphid,monoraphid和双针羽纹硅藻<15 μm的长度。盐藻下沉积物的叶绿素a浓度范围为14至125 mg m −2,年平均值为44 mg m −2。多元逐步回归分析表明,水温和盐藻叶片密度对叶绿素a浓度有较好的预测作用,但R2仅为0.38
The sandy sediments beneath beds of the seagrass Halodule wrightii Ascherson in Mississippi Sound support a diverse and productive benthic microalgal assemblage. Over an annual cycle (June 1989-June 1990), virtually all algal cells comprising the sand microflora were small araphid, monoraphid, and biraphid pennate diatoms <15 μm in length. Chlorophyll a concentrations in the sediments beneath Halodule ranged from 14 to 125 mg m −2 for individual beds with an annual mean of 44 mg m −2 . Stepwise multiple regression indentified water temperature and the density of Halodule blades as the best predictors of chl a concentration; however, R 2 was only 0.38