Seasonal changes in biom ass of macrophytes on shaded and unshaded sections of the River Lambourn, England
Seasonal changes in biom ass of macrophytes on shaded and unshaded sections of the River Lambourn, England
复制标题
英国兰伯恩河遮荫和非遮荫河段大型植物生物量的季节变化
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
A. D. Berrie
中科院分区：
文献类型：
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作者：
J. Wright;A. Cameron;P. Hiley;A. D. Berrie
摘要1971年3月至1973年10月，在Bagnor的Lambourn河上的两个50米的站点上记录了毛茛属，Berula和Callitriche的生物量的月变化。在没有阴影的地方。毛茛是占主导地位的水生植物，其生物量变化的特点是从20-40克干重m-2在3月到400克干重m-2左右，在生长季节结束。在荫蔽的地方，Berula是优势的水生植物。毛茛的生物量低于对照地。在这两个站点上，Berula的平均生物量之间没有显著差异，但在阴影站点上，Callitriche的生物量显著较高。计算了每个站点的水生植物总生物量的估计值，并评估了每年夏季切割作业期间去除的水生植物生物量。
SUMMARY. Monthly changes in the biomass of Ranunculus, Berula and Callitriche were recorded on two 50-m sites on the River Lambourn at Bagnor between March 1971 and October 1973. On the unshaded site. Ranunculus was the dominant macrophyte and characteristically its biomass changed from 20–40 g dry wt m-2 in March to around 400 g dry wt m-2 at the end of the growing season. On the shaded site, where Berula was the dominant macrophyte. the biomass of Ranunculus was lower than on the unshaded site. There was no significant difference between the mean biomasses of Berula on these two sites but Callitriche had a signifieantly higher biomass on the shaded site. Estimates of the total biomass of macrophyte on each site were calculated and the biomass of macrophyte removed during cutting operations each summer was also assessed.