The Role of Dispersal and Colonization in Determining Understory Species Distributions in Northeastern Forests

贝蒂教授将对高地进行一系列测量 落叶林地面物种组成的种子下降， 种子的陆上移动和其他散布机制。 的 将在各种森林环境中进行测量，包括 老田地、洪泛平原森林、演替森林和针叶林。 当地的救济也将被考虑。 该项目旨在确定种子传播是否是 物种定殖的控制因素或环境因素 条件更重要。 该项目将产生更深层次的 了解植被变化和演替的决定因素， 从而有助于基础和应用地理学。 这些发现 也将有助于我们理解一个国家的继承过程， 在更大的分析尺度上的空间性质以及其他现象。

Professor Beatty will make a series of measurements of upland deciduous forest floor species composition resulting from seed fall, overland movement of seeds, and other dispersion mechanisms. The measurements will be made in a variety of forest environments including old fields, floodplain forests, successional forests, and conifer forests. Local relief will also be considered. The project is designed to determine whether seed dispersal is the controlling factor in species colonization or whether environmental conditions are more important. The project will yield a deeper understanding of the determinants of vegetational change and succession, and contribute thereby to basic and applied biogeography. The findings will also contribute to our understanding of successional processes of a spatial nature among other phenomena at larger scales of analysis.