DOI: 10.5061/dryad.gxd2547k0
title: Data from: The role of functional strategies in global plant distribution

description: Understanding the determinants of species distributions is a central topic
 in ecology. Competition, stress tolerance and colonization, respectively
 represented by Grime’s competitor (C), stress-tolerator (S) and ruderal
 (R) schemes, are three important functions that interactively influence
 plant distributions. In this study, we compiled a dataset of 2645 vascular
 plant species to explore the roles of the CSR strategies in global plant
 distribution. We analyzed the associations between the CSR scores and
 species range size with phylogenetic generalized least square (PGLS)
 models and phylogenetic path analysis, both of which accounted for the
 effects of species phylogenetic relatedness, longevity, and growth form.
 The functional strategy-range size associations differed across different
 distributional ranges and growth forms. Specifically, species global and
 native range sizes were positively associated with the R score; species
 naturalized range size was positively associated with the C score; and all
 range-size measurements were negatively associated with the S score. These
 patterns were mostly driven by herbs but not shrubs or trees. For species
 global and native-range distributions, the patterns of shrubs were even
 opposite to those of herbs. Our work emphasizes the importance of
 distinguishing the functional strategy-distribution associations between
 different distributional ranges and growth forms for ecosystem
 conservation and invasion risk prediction, because of the trade-offs among
 the CSR strategies.
description: All range sizes were estimated based on equal-area projection of
 species occurrence records from the Global Biodiversity Information
 Facility (GBIF). We first downloaded GBIF records using he function 
 'occ_search' in the R package 'rgbif'. Then, we
 projected the records based on World Eckert IV system and assign the
 records to species native or naturlized range by referring to the Global
 Naturalized Alien Flora (GloNAF) database. Over-estimation of naturalized
 range size will occur, when we designated a whole continent as the
 naturalized range, while, in fact, the focal species is native to some but
 non-native to the other regions in the corresponding continent. Therefore,
 we also supplemented evaluation of the the risk level of such
 over-estimation by calculating the geographic distances between the
 regions in the GBIF that have not been included in the GloNAF and those
 included in the GloNAF. This was done using the 'distGeo'
 function from the 'geosphere' package. For
 the CSR scores, we directly acquired the data from the global dataset
 compiled by Pierce et al. (2017), which included the C, S and R scores for
 3068 vascular plant species. Data on species longevity and growth forms
 were also taken from Table S1 of Pierce et al. (2017) after making some
 modifications on the longevity and growth forms. We designated annuals or
 biennials as short-lived species and perennials as long-lived species. In
 addition, we combined forbs, graminoids, herbaceous vines and aquatic
 species as herbs, and combined lianas and shrubs as shrubs.