Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1002/ecy.2681
Title (Primary) Population projection models for 14 alien plant species in the presence and absence of above‐ground competition
Author Levin, S.C.; Crandall, R.M.; Knight, T.M.
Source Titel Ecology
Year 2019
Department BZF; iDiv
Volume 100
Issue 6
Page From e02681
Language englisch
Keywords invasive species; demography; population dynamics; competition; biomass; germination
Abstract Plant population ecologists strive to understand how environmental drivers influence demographic vital rates and thus population dynamics. Hundreds of studies have collected demographic data and used matrix‐ and/or integral projection models to quantify lifetime fitness and population dynamics of plants. However, most of these studies have focused on native plant species, and there is a need for more studies on alien plants. Further, few studies on alien plants have experimentally manipulated environmental drivers in order to understand the mechanisms that allow alien plant species to have positive population growth. A synthetic understanding of the population dynamics of alien plant species will only be achieved if ecologists collect demographic data on many plant species and environments and provide the demographic data and model structure in a data archive for future comparisons and meta‐analyses. Invasive alien species are a social, economic and ecological issue that has become increasingly important in an increasingly globalized world. Researchers continue to forecast impacts and prevent new introductions by seeking a robust understanding of drivers of invasive species success and failure. Researchers have hypothesized that competitive differences may play a key role in determining alien species success in novel environments. Studies that experimentally manipulate competitors while quantifying demography provide mechanistic insight into species’ responses to competition. To date, nearly all field manipulations of competition that measure plant demography and population dynamics have focused on native plant species. The data we provide here aims to address this gap in our knowledge for alien plant species. We present raw data and population projection models for 14 alien plant species in eastern Missouri, USA. We sampled under ambient conditions and with all individuals of non‐focal species removed from the community, allowing us to project population dynamics in the presence and absence of competition. We have also included the data quantifying how much biomass we removed at the plot level during each removal procedure and data from our germination experiment.
Persistent UFZ Identifier
Levin, S.C., Crandall, R.M., Knight, T.M. (2019):
Population projection models for 14 alien plant species in the presence and absence of above‐ground competition
Ecology 100 (6), e02681 10.1002/ecy.2681