A New Device to Estimate Abundance of Moist-Soil Plant Seeds
A New Device to Estimate Abundance of Moist-Soil Plant Seeds
复制标题
一种估计潮湿土壤植物种子丰度的新装置
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
K. Reinecke
中科院分区：
文献类型：
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作者：
E. Penny;R. Kaminski;K. Reinecke
Abstract Methods to sample the abundance of moist-soil seeds efficiently and accurately are critical for evaluating management practices and determining food availability. We adapted a portable, gasoline-powered vacuum to estimate abundance of seeds on the surface of a moist-soil wetland in east-central Mississippi and evaluated the sampler by simulating conditions that researchers and managers may experience when sampling moist-soil areas for seeds. We measured the percent recovery of known masses of seeds by the vacuum sampler in relation to 4 experimentally controlled factors (i.e., seed-size class, sample mass, soil moisture class, and vacuum time) with 2–4 levels per factor. We also measured processing time of samples in the laboratory. Across all experimental factors, seed recovery averaged 88.4% and varied little (CV = 0.68%, n = 474). Overall, mean time to process a sample was 30.3 ± 2.5 min (SE, n = 417). Our estimate of seed recovery rate (88%) may be used to adjust estimates for incomplete seed recovery, or project–specific correction factors may be developed by investigators. Our device was effective for estimating surface abundance of moist-soil plant seeds after dehiscence and before habitats were flooded.
