Patterns of Primary Succession on the Foreland of Coleman Glacier,Washington, USA |
| |
Authors: | Email author" target="_blank">Chad C?JonesEmail author Roger?del Moral |
| |
Institution: | (1) Department of Biology, University of Washington, Box 355325, WA 98195-5325 Seattle, USA;(2) Present address: College of Forest Resources, University of Washington, Box 352100, 98195-2100 Seattle, WA, USA |
| |
Abstract: | Patterns of community development vary among studied glacier forelands around the world. However, there have been few studies
of primary succession on glacial forelands in temperate regions of North America. We described patterns in community composition,
vegetation cover, diversity, and vegetation heterogeneity during primary succession on the foreland of Coleman Glacier, in
Washington State, USA. Community composition changed rapidly with high turnover between age classes. Cover increased through
succession as expected. Species richness and diversity were highest in early succession at small scales and in late succession
at larger scales. At small scales, heterogeneity decreased in early succession but increased in mature sites. At larger scales,
heterogeneity reached its lowest point earlier in succession. These scale-dependent patterns in diversity and heterogeneity
differ from results of other studies of glacier forelands. We hypothesize that these patterns arise due to the development
of a dense canopy of the deciduous shrub Alnus viridis followed by a dense canopy of Abies amabilis, Tsuga heterophylla, and Pseudotsuga menziesii. |
| |
Keywords: | Diversity Heterogeneity Species richness |
本文献已被 SpringerLink 等数据库收录! |
|