Contribution of Particulate Phosphorus (> 250 μm) to the Total Phosphorus Pool in Lake Water
Contribution of Particulate Phosphorus (> 250 μm) to the Total Phosphorus Pool in Lake Water
复制标题
颗粒磷（>250μm）对湖水中总磷库的贡献
DOI：
10.1139/f84-038
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
J. Vickery
中科院分区：
文献类型：
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作者：
E. Prepas;J. Vickery
阿尔伯塔省中部17个湖泊的颗粒态磷(PP)>； 250 μm集中在真光带。当真光区延伸到外延层以下时，PP >；250 μm在真光区深层聚集。PP &> 250 μm是个别湖泊总磷(TP)库中一个重要但不稳定的部分；因此，应在几个日期从真光层采集样本，以评估PP &> 250 μm对TP池的贡献。此外，这一部分的贡献在不同的湖泊中也不同：夏季真光层的平均值从3%到19%不等。在湖泊中，随着湖泊生产力(由叶绿素a(Chla)估计)的增加，大颗粒对TP池的贡献成比例地下降。夏季PP >； 250 μm的相对贡献对春季TP-夏季Chla关系的残差贡献很大，但对夏季TP-夏季Chla关系的影响不大。这些明显相互矛盾的结果可以解释。
Particulate phosphorus (PP) > 250 μm was concentrated in the euphotic zone of 17 lakes in central Alberta. When the euphotic zone extended below the epilimnion, PP >250 μm was concentrated deep in the euphotic zone. PP > 250 μm was a significant but variable portion of the total phosphorus (TP) pool in individual lakes; thus, samples should be collected from the euphotic zone on several dates to estimate the contribution of PP > 250 μm to the TP pool. As well, the contribution of this fraction varied among lakes: average summer values for the euphotic zone ranged from 3 to 19%. Among lakes, the contribution of large particles to the TP pool decreased proportionally as lake productivity (estimated by chlorophyll a (Chl a)) increased. The relative contribution of PP > 250 μm in summer accounted for a significant portion of the residual variation in the spring TP-summer Chl a relationship but not the summer TP-summer Chl a relationship in the study lakes. These apparently contradictory results can be explain...