Rees Mark, Brown Valerie K
Department of Biology, Imperial College at Silwood Park, SL5 7PY, Ascot, Berks, UK.
Oecologia. 1991 Jun;87(1):58-62. doi: 10.1007/BF00323780.
The germination response of Sinapis arvensis to the presence of established plants was investigated in a greenhouse experiment. Established conspecific and heterospecific plants were found to inhibit germination and reduce the probability of recruitment of those seeds that germinate. Established plants have no effect on seed mortality in the soil. Using a simple recruitment model, it is demonstrated that the combination of variance in germination time coupled with the interaction between buried seeds and established plants can generate density dependence. The implications of these results for community processes, such as succession, are discussed.
在温室实验中研究了田野毛茛对已定植植物存在的萌发反应。已发现已定植的同种和异种植物会抑制萌发，并降低那些已萌发种子的招募概率。已定植植物对土壤中的种子死亡率没有影响。使用一个简单的招募模型表明，萌发时间的方差与埋藏种子和已定植植物之间的相互作用相结合，可以产生密度依赖性。讨论了这些结果对群落过程（如演替）的影响。
