Quantitative grab sampler for dense beds of aquatic macrophytes
Quantitative grab sampler for dense beds of aquatic macrophytes
复制标题
用于水生植物密集床的定量抓取采样器
DOI：
10.1080/00288330.1976.9515602
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
J. M. Brown
中科院分区：
文献类型：
--
作者：
F. I. Dromgoole;J. M. Brown
摘要介绍了一种适用于水生植物密床取样的简易机械抓斗的结构和操作。该技术与潜水员-样方法相比有几个优点。这两种方法都用于罗托鲁瓦湖的植被调查，那里的植物密度达到了淡水湖泊的最高记录。结果表明，杂草密度在短距离上有明显的变化，因此两种方法都需要大量的样品才能准确测定生物量。
Abstract The construction and operation of a simple mechanical grab, suitable for sampling dense beds of aquatic macrophytes, is described. The technique has several advantages over the diver‐quadrat method. Both methods have been used in vegetation surveys of the Rotorua lakes where plant densities attain the maximum recorded for freshwater lakes. The results indicate marked variations in weed density over short distances, and thus both methods require a large number of samples for an accurate determination of biomass.