SEDIMENT AND WATER AS SOURCES OF NITROGEN AND PHOSPHORUS FOR SUBMERGED ROOTED AQUATIC MACROPHYTES
SEDIMENT AND WATER AS SOURCES OF NITROGEN AND PHOSPHORUS FOR SUBMERGED ROOTED AQUATIC MACROPHYTES
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DOI：
10.1016/0304-3770(91)90060-i
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发表时间：
1991-06-01
期刊：
影响因子：
1.8
通讯作者：
BROWN, JMA
中科院分区：
文献类型：
--
作者：
RATTRAY, MR;HOWARDWILLIAMS, C;BROWN, JMA
两个扎根沉水淡水植物（Lagarosiphon major（Ridley）莫斯; Myriophyllum triphyllum果园）生长在两个不同的营养状态的湖泊（陶波湖，贫营养;罗托鲁瓦湖，富营养）在大型原位实验中，表现出两种不同的营养限制。 植物生长在贫营养和富营养的沉积物在每个湖泊。 在贫营养湖泊中，生长在富营养沉积物上的植物大约是生长在贫营养沉积物上的植物的两倍。 组织营养分析表明，磷水平增加了约一倍，在富营养化沉积物上生长的植物，这表明磷限制了贫营养沉积物上生长的植物的生长。 在富营养化的湖泊中，这种沉积物相关的响应是可以忽略不计的不同沉积物类型的植物生长之间没有一致的差异。 由于所有实验中的沉积物都具有可比性，这表明水相在这些物种的营养中发挥了作用。
Two rooted submerged freshwater macrophytes (Lagarosiphon major (Ridley) Moss; Myriophyllum triphyllum Orchard) grown in large in situ experiments in two lakes of differing trophic status (Lake Taupo, oligotrophic; Lake Rotorua, eutrophic), exhibited two different nutrient limitations. Plants were grown on both oligotrophic and eutrophic sediments in each of the lakes. In the oligotrophic lake, plants grown on the eutrophic sediments were approximately twice the size of those grown on the oligotrophic sediments. Tissue nutrient analysis demonstrated that phosphorus levels were approximately doubled in plants grown on the eutrophic sediments, suggesting that phosphorus was limiting the growth of plants grown on the oligotrophic sediments. In the eutrophic lake, this sediment-related response was negligible with no consistent differences between the plants grown on the different sediment types. As the sediments were comparable in all the experiments, this suggested that the water phase was playing a role in the nutrition of these species.